font-variant-caps - CSS: Cascading Style Sheets
the font-variant-caps css property controls the use of alternate glyphs for capital letters.
... syntax /* keyword values */ font-variant-caps: normal; font-variant-caps: small-caps; font-variant-caps: all-small-caps; font-variant-caps: petite-caps; font-variant-caps: all-petite-caps; font-variant-caps: unicase; font-variant-caps: titling-caps; /* global values */ font-variant-caps: inherit; font-variant-caps: initial; font-variant-caps: unset; the font-variant-caps property is specified using a single keyword value from t...
... accessibility concerns large sections of text set with a font-variant value of all-small-caps or all-petite-caps may be difficult for people with cognitive concerns such as dyslexia to read.
...And 2 more matches

font-variant-position - CSS: Cascading Style Sheets
the font-variant-position css property controls the use of alternate, smaller glyphs that are positioned as superscript or subscript.
... /* keyword values */ font-variant-position: normal; font-variant-position: sub; font-variant-position: super; /* global values */ font-variant-position: inherit; font-variant-position: initial; font-variant-position: unset; when the usage of these alternate glyphs is activated, if one character in the run doesn't have such a typographically-enhanced glyph, the whole set of characters of the run is rendered using a fallback method, synthesizing these glyphs.
... syntax the font-variant-position property is specified as one of the keyword values listed below.
...And 2 more matches

::-webkit-progress-value - CSS: Cascading Style Sheets
the ::-webkit-progress-value css pseudo-element represents the filled-in portion of the bar of a <progress> element.
... note: in order to let ::-webkit-progress-value take effect, -webkit-appearance needs to be set to none on the <progress> element.
... syntax ::-webkit-progress-value examples this example will only work in browsers based on blink or webkit.
... html <progress value="10" max="50"> css progress { -webkit-appearance: none; } ::-webkit-progress-value { background-color: orange; } result result screenshot a progress bar using the style above would look like this: specifications not part of any standard.

font-variation-settings - CSS: Cascading Style Sheets
the font-variation-settings css property provides low-level control over variable font characteristics, by specifying the four letter axis names of the characteristics you want to vary, along with their values.
... syntax /* use the default settings */ font-variation-settings: normal; /* set values for variable font axis names */ font-variation-settings: "xhgt" 0.7; /* global values */ font-variation-settings: inherit; font-variation-settings: initial; font-variation-settings: unset; values this property's value can take one of two forms: normal text is laid out using default settings.
... font characteristics set using font-variation-settings will always override those set using the corresponding basic font properties, e.g.
... specifications specification status comment css fonts module level 4the definition of 'font-variation-settings' in that specification.

glyph-orientation-vertical - SVG: Scalable Vector Graphics
the glyph-orientation-vertical attribute affects the amount that hte current text position advances as each glyph is rendered.
... when the inline-progression-direction is vertical and the glyph-orientation-vertical results in an orientation angle that is a multiple of 180 degrees, then the current text position is incremented according to the vertical metrics of the glyph.
... note: as a presentation attribute, glyph-orientation-vertical can be used as a css property.
... specifications specification status comment scalable vector graphics (svg) 1.1 (second edition)the definition of 'glyph-orientation-vertical' in that specification.

::-ms-value - Archive of obsolete content
the ::-ms-value css pseudo-element is a microsoft extension that applies rules to the value of a text or password <input> control or the content of a <select> control.
... allowable properties only the following css properties can be used in a rule with ::-ms-value in its selector.
...alues block, inline-block, none) @font-face font-size font-style font-weight height margin-bottom margin-left margin-right margin-top -ms-background-position-x -ms-background-position-y -ms-high-contrast-adjust opacity outline-color outline-style outline-width padding-bottom padding-left padding-right padding-top transform transform-origin visibility width syntax ::-ms-value example input::-ms-value { color: lime; font-style: italic; } to disable the default styling: select::-ms-value { background-color: transparent; color: inherit; } specifications not part of any specification.

::-webkit-meter-even-less-good-value - CSS: Cascading Style Sheets
the ::-webkit-meter-even-less-good-value gives a red color to a <meter> element when the value and the optimum attributes fall outside the low-high range, but in opposite zones.
... syntax ::-webkit-meter-even-less-good-value specifications not part of any standard.
... examples html <meter min="0" max="10" value="6">score out of 10</meter> css meter::-webkit-meter-even-less-good-value { background: linear-gradient(to bottom, #f77, #d44 45%, #d44 55%, #f77); height: 100%; box-sizing: border-box; } result ...

::-webkit-meter-optimum-value - CSS: Cascading Style Sheets
the ::-webkit-meter-optimum-value css pseudo-element styles the <meter> element when its value is inside the low-high range.
... syntax ::-webkit-meter-optimum-value specifications not part of any standard.
... html <meter min="0" max="10" value="6">score out of 10</meter> css meter::-webkit-meter-bar { /* required to get rid of the default background property */ background : none; background-color : whitesmoke; box-shadow : 0 5px 5px -5px #333 inset; } meter::-webkit-meter-optimum-value { box-shadow: 0 5px 5px -5px #999 inset; } result ...

::-webkit-meter-suboptimum-value - CSS: Cascading Style Sheets
the ::-webkit-meter-suboptimum-value pseudo-element gives a yellow color to the <meter> element when the value attribute falls outside of the low-high range.
... syntax ::-webkit-meter-suboptimum-value examples this example will only work in browsers based on webkit or blink.
... html <meter min="0" max="10" value="6">score out of 10</meter> css meter::-webkit-meter-suboptimum-value { background: -webkit-gradient linear, left top, left bottom; height: 100%; box-sizing: border-box; } result specifications not part of any standard.

font-variation-settings - CSS: Cascading Style Sheets
the font-variation-settings css descriptor allows authors to specify low-level opentype or truetype font variations in the @font-face rule.
... syntax /* use the default settings */ font-variation-settings: normal; /* set values for opentype axis names */ font-variation-settings: "xhgt" 0.7; values normal text is laid out using default settings.
... formal definition related at-rule@font-faceinitial valuenormalcomputed valueas specified formal syntax normal | [ <string> <number> ]# examples setting font weight and stretch in a @font-face rule @font-face { font-family: 'opentypefont'; src: url('open_type_font.woff2') format('woff2'); font-weight: normal; font-style: normal; font-variation-settings: 'wght' 400, 'wdth' 300; } specifications specification status comment css fonts module level 4the definition of 'font-variation-settings' in that specification.

:-moz-ui-valid - CSS: Cascading Style Sheets
the :-moz-ui-valid css pseudo-class represents any validated form element whose value validates correctly based on its validation constraints.
... if the control has focus, and the value was invalid when it gained focus, re-validate on every keystroke.

-moz-os-version - Archive of obsolete content
the -moz-os-version gecko-only css media feature can be used to apply styles based on the user's version of microsoft windows.

Media (Audio-visual presentation) - MDN Web Docs Glossary: Definitions of Web-related terms
the term media (more accurately, multimedia) refers to audio, video, or combined audio-visual material such as music, recorded speech, movies, tv shows, or any other form of content that is presented over a period of time.

Index
ort.so} filepermissions{555} } xplat/instr.html { relativepath{%root%/docs/inst.html} absolutepath{/usr/local/netscape/docs/inst.html} filepermissions{555} } } } irix:6.2:mips { equivalentplatform { sunos:5.5.1:sparc } } } script grammar the script is basic java, allowing lists, key-value pairs, strings, and combinations of all of them.
...each entry in the list is itself a key-value pair: the key is the name of the platform and the value list contains various attributes of the platform.
...each entry in the file list is a key-value pair.
...And 29 more matches

Variable fonts guide - CSS: Cascading Style Sheets
variable fonts: what they are, and how they differ to better understand what's different about variable fonts, it is worth reviewing what non-variable ones are like and how they compare.
...in order to most accurately reflect the typeface design and avoid differences between browsers and how they may or may not synthesize the different styles, it's more accurate to load the specific font files where needed when using a non-variable font.
...the lower-level syntax (font-variation-settings) was the first mechanism implemented in order to test the early implementations of variable font support, and is necessary to utilize new or custom axes beyond the five registered ones.
...And 23 more matches

begin - SVG: Scalable Vector Graphics
each individual value can be one of the following : <offset-value>, <syncbase-value>, <event-value>, <repeat-value>, <accesskey-value>, <wallclock-sync-value> or the keyword indefinite.
... value <begin-value-list> default value 0s animatable no the <begin-value-list> is a semicolon-separated list of values.
... each value can be one of the following: <offset-value> this value defines a clock-value that represents a point in time relative to the beginning of the svg document (usually the load or domcontentloaded event).
...And 15 more matches

additive-symbols - CSS: Cascading Style Sheets
the additive system is used to construct sign-value numbering systems such as roman numerals.
...)<image-set()> = image-set( <image-set-option># )<element()> = element( <id-selector> )<paint()> = paint( <ident>, <declaration-value>?
...[ at <position> ]?, <angular-color-stop-list> )where <rgb()> = rgb( <percentage>{3} [ / <alpha-value> ]?
...And 12 more matches

end - SVG: Scalable Vector Graphics
five elements are using this attribute: <animate>, <animatecolor>, <animatemotion>, <animatetransform>, and <set> usage notes default value none value <end-value-list> animatable no the <end-value-list> is a semicolon-separated list of values.
... each value can be one of the following: <offset-value> this value defines a clock-value that represents a point in time relative to the beginning of the svg document (usually the load or domcontentloaded event).
... <syncbase-value> this value defines a syncbase and an optional offset from that syncbase.
...And 12 more matches

-webkit-box-reflect - CSS: Cascading Style Sheets
)<image-set()> = image-set( <image-set-option># )<element()> = element( <id-selector> )<paint()> = paint( <ident>, <declaration-value>?
...[ at <position> ]?, <angular-color-stop-list> )where <rgb()> = rgb( <percentage>{3} [ / <alpha-value> ]?
... ) | rgb( <number>{3} [ / <alpha-value> ]?
...And 11 more matches

negative - CSS: Cascading Style Sheets
)<image-set()> = image-set( <image-set-option># )<element()> = element( <id-selector> )<paint()> = paint( <ident>, <declaration-value>?
...[ at <position> ]?, <angular-color-stop-list> )where <rgb()> = rgb( <percentage>{3} [ / <alpha-value> ]?
... ) | rgb( <number>{3} [ / <alpha-value> ]?
...And 11 more matches

pad - CSS: Cascading Style Sheets
)<image-set()> = image-set( <image-set-option># )<element()> = element( <id-selector> )<paint()> = paint( <ident>, <declaration-value>?
...[ at <position> ]?, <angular-color-stop-list> )where <rgb()> = rgb( <percentage>{3} [ / <alpha-value> ]?
... ) | rgb( <number>{3} [ / <alpha-value> ]?
...And 11 more matches

prefix - CSS: Cascading Style Sheets
)<image-set()> = image-set( <image-set-option># )<element()> = element( <id-selector> )<paint()> = paint( <ident>, <declaration-value>?
...[ at <position> ]?, <angular-color-stop-list> )where <rgb()> = rgb( <percentage>{3} [ / <alpha-value> ]?
... ) | rgb( <number>{3} [ / <alpha-value> ]?
...And 11 more matches

suffix - CSS: Cascading Style Sheets
)<image-set()> = image-set( <image-set-option># )<element()> = element( <id-selector> )<paint()> = paint( <ident>, <declaration-value>?
...[ at <position> ]?, <angular-color-stop-list> )where <rgb()> = rgb( <percentage>{3} [ / <alpha-value> ]?
... ) | rgb( <number>{3} [ / <alpha-value> ]?
...And 11 more matches

symbols - CSS: Cascading Style Sheets
)<image-set()> = image-set( <image-set-option># )<element()> = element( <id-selector> )<paint()> = paint( <ident>, <declaration-value>?
...[ at <position> ]?, <angular-color-stop-list> )where <rgb()> = rgb( <percentage>{3} [ / <alpha-value> ]?
... ) | rgb( <number>{3} [ / <alpha-value> ]?
...And 11 more matches

OpenType font features guide - CSS: Cascading Style Sheets
the issue with simply using font-feature-settings for everything is that every time you want to change one of the individual features, you have to redefine the entire string (similar to manipulating variable fonts with font-variation-settings).
... sometimes it's substance, not just style there are some cases — like with font-variant-east-asian — that opentype features are directly tied to using different forms of certain glyphs, which can impact meaning and readability.
... alternates (font-variant-alternates) fonts can supply a number of different alternatives for various glyphs, such as different styles of lower case 'a' or more or less elaborate swashes in a script typeface.
...And 11 more matches

background-image - CSS: Cascading Style Sheets
)<image-set()> = image-set( <image-set-option># )<element()> = element( <id-selector> )<paint()> = paint( <ident>, <declaration-value>?
...[ at <position> ]?, <angular-color-stop-list> )where <rgb()> = rgb( <percentage>{3} [ / <alpha-value> ]?
... ) | rgb( <number>{3} [ / <alpha-value> ]?
...And 11 more matches

background - CSS: Cascading Style Sheets
)<image-set()> = image-set( <image-set-option># )<element()> = element( <id-selector> )<paint()> = paint( <ident>, <declaration-value>?
...[ at <position> ]?, <angular-color-stop-list> )where <rgb()> = rgb( <percentage>{3} [ / <alpha-value> ]?
... ) | rgb( <number>{3} [ / <alpha-value> ]?
...And 11 more matches

border-image-source - CSS: Cascading Style Sheets
)<image-set()> = image-set( <image-set-option># )<element()> = element( <id-selector> )<paint()> = paint( <ident>, <declaration-value>?
...[ at <position> ]?, <angular-color-stop-list> )where <rgb()> = rgb( <percentage>{3} [ / <alpha-value> ]?
... ) | rgb( <number>{3} [ / <alpha-value> ]?
...And 11 more matches

border - CSS: Cascading Style Sheets
description as with all shorthand properties, any omitted sub-values will be set to their initial value.
...hborder-top-width: a length formal syntax <line-width> | <line-style> | <color>where <line-width> = <length> | thin | medium | thick<line-style> = none | hidden | dotted | dashed | solid | double | groove | ridge | inset | outset<color> = <rgb()> | <rgba()> | <hsl()> | <hsla()> | <hex-color> | <named-color> | currentcolor | <deprecated-system-color>where <rgb()> = rgb( <percentage>{3} [ / <alpha-value> ]?
... ) | rgb( <number>{3} [ / <alpha-value> ]?
...And 11 more matches

content - CSS: Cascading Style Sheets
)<image-set()> = image-set( <image-set-option># )<element()> = element( <id-selector> )<paint()> = paint( <ident>, <declaration-value>?
...[ at <position> ]?, <angular-color-stop-list> )<counter-style> = <counter-style-name> | symbols()where <rgb()> = rgb( <percentage>{3} [ / <alpha-value> ]?
... ) | rgb( <number>{3} [ / <alpha-value> ]?
...And 11 more matches

cross-fade() - CSS: Cascading Style Sheets
)<image-set()> = image-set( <image-set-option># )<element()> = element( <id-selector> )<paint()> = paint( <ident>, <declaration-value>?
...)<gradient> = <linear-gradient()> | <repeating-linear-gradient()> | <radial-gradient()> | <repeating-radial-gradient()> | <conic-gradient()><rgb()> = rgb( <percentage>{3} [ / <alpha-value> ]?
... ) | rgb( <number>{3} [ / <alpha-value> ]?
...And 11 more matches

mask-border-source - CSS: Cascading Style Sheets
)<image-set()> = image-set( <image-set-option># )<element()> = element( <id-selector> )<paint()> = paint( <ident>, <declaration-value>?
...[ at <position> ]?, <angular-color-stop-list> )where <rgb()> = rgb( <percentage>{3} [ / <alpha-value> ]?
... ) | rgb( <number>{3} [ / <alpha-value> ]?
...And 11 more matches

mask-image - CSS: Cascading Style Sheets
)<image-set()> = image-set( <image-set-option># )<element()> = element( <id-selector> )<paint()> = paint( <ident>, <declaration-value>?
...[ at <position> ]?, <angular-color-stop-list> )where <rgb()> = rgb( <percentage>{3} [ / <alpha-value> ]?
... ) | rgb( <number>{3} [ / <alpha-value> ]?
...And 11 more matches

mask - CSS: Cascading Style Sheets
)<image-set()> = image-set( <image-set-option># )<element()> = element( <id-selector> )<paint()> = paint( <ident>, <declaration-value>?
...[ at <position> ]?, <angular-color-stop-list> )where <rgb()> = rgb( <percentage>{3} [ / <alpha-value> ]?
... ) | rgb( <number>{3} [ / <alpha-value> ]?
...And 11 more matches

shape-outside - CSS: Cascading Style Sheets
)<image-set()> = image-set( <image-set-option># )<element()> = element( <id-selector> )<paint()> = paint( <ident>, <declaration-value>?
...[ at <position> ]?, <angular-color-stop-list> )where <rgb()> = rgb( <percentage>{3} [ / <alpha-value> ]?
... ) | rgb( <number>{3} [ / <alpha-value> ]?
...And 11 more matches

-moz-border-bottom-colors - Archive of obsolete content
formal syntax <color>+ | nonewhere <color> = <rgb()> | <rgba()> | <hsl()> | <hsla()> | <hex-color> | <named-color> | currentcolor | <deprecated-system-color>where <rgb()> = rgb( <percentage>{3} [ / <alpha-value> ]?
... ) | rgb( <number>{3} [ / <alpha-value> ]?
... ) | rgb( <percentage>#{3} , <alpha-value>?
...And 10 more matches

-moz-border-left-colors - Archive of obsolete content
formal syntax <color>+ | nonewhere <color> = <rgb()> | <rgba()> | <hsl()> | <hsla()> | <hex-color> | <named-color> | currentcolor | <deprecated-system-color>where <rgb()> = rgb( <percentage>{3} [ / <alpha-value> ]?
... ) | rgb( <number>{3} [ / <alpha-value> ]?
... ) | rgb( <percentage>#{3} , <alpha-value>?
...And 10 more matches

-moz-border-right-colors - Archive of obsolete content
formal syntax <color>+ | nonewhere <color> = <rgb()> | <rgba()> | <hsl()> | <hsla()> | <hex-color> | <named-color> | currentcolor | <deprecated-system-color>where <rgb()> = rgb( <percentage>{3} [ / <alpha-value> ]?
... ) | rgb( <number>{3} [ / <alpha-value> ]?
... ) | rgb( <percentage>#{3} , <alpha-value>?
...And 10 more matches

-moz-border-top-colors - Archive of obsolete content
formal syntax <color>+ | nonewhere <color> = <rgb()> | <rgba()> | <hsl()> | <hsla()> | <hex-color> | <named-color> | currentcolor | <deprecated-system-color>where <rgb()> = rgb( <percentage>{3} [ / <alpha-value> ]?
... ) | rgb( <number>{3} [ / <alpha-value> ]?
... ) | rgb( <percentage>#{3} , <alpha-value>?
...And 10 more matches

-ms-scrollbar-3dlight-color - Archive of obsolete content
formal syntax <color>where <color> = <rgb()> | <rgba()> | <hsl()> | <hsla()> | <hex-color> | <named-color> | currentcolor | <deprecated-system-color>where <rgb()> = rgb( <percentage>{3} [ / <alpha-value> ]?
... ) | rgb( <number>{3} [ / <alpha-value> ]?
... ) | rgb( <percentage>#{3} , <alpha-value>?
...And 10 more matches

-ms-scrollbar-arrow-color - Archive of obsolete content
formal syntax <color>where <color> = <rgb()> | <rgba()> | <hsl()> | <hsla()> | <hex-color> | <named-color> | currentcolor | <deprecated-system-color>where <rgb()> = rgb( <percentage>{3} [ / <alpha-value> ]?
... ) | rgb( <number>{3} [ / <alpha-value> ]?
... ) | rgb( <percentage>#{3} , <alpha-value>?
...And 10 more matches

-ms-scrollbar-base-color - Archive of obsolete content
formal syntax <color>where <color> = <rgb()> | <rgba()> | <hsl()> | <hsla()> | <hex-color> | <named-color> | currentcolor | <deprecated-system-color>where <rgb()> = rgb( <percentage>{3} [ / <alpha-value> ]?
... ) | rgb( <number>{3} [ / <alpha-value> ]?
... ) | rgb( <percentage>#{3} , <alpha-value>?
...And 10 more matches

-ms-scrollbar-darkshadow-color - Archive of obsolete content
formal syntax <color>where <color> = <rgb()> | <rgba()> | <hsl()> | <hsla()> | <hex-color> | <named-color> | currentcolor | <deprecated-system-color>where <rgb()> = rgb( <percentage>{3} [ / <alpha-value> ]?
... ) | rgb( <number>{3} [ / <alpha-value> ]?
... ) | rgb( <percentage>#{3} , <alpha-value>?
...And 10 more matches

-ms-scrollbar-face-color - Archive of obsolete content
formal syntax <color>where <color> = <rgb()> | <rgba()> | <hsl()> | <hsla()> | <hex-color> | <named-color> | currentcolor | <deprecated-system-color>where <rgb()> = rgb( <percentage>{3} [ / <alpha-value> ]?
... ) | rgb( <number>{3} [ / <alpha-value> ]?
... ) | rgb( <percentage>#{3} , <alpha-value>?
...And 10 more matches

-ms-scrollbar-highlight-color - Archive of obsolete content
formal syntax <color>where <color> = <rgb()> | <rgba()> | <hsl()> | <hsla()> | <hex-color> | <named-color> | currentcolor | <deprecated-system-color>where <rgb()> = rgb( <percentage>{3} [ / <alpha-value> ]?
... ) | rgb( <number>{3} [ / <alpha-value> ]?
... ) | rgb( <percentage>#{3} , <alpha-value>?
...And 10 more matches

-ms-scrollbar-shadow-color - Archive of obsolete content
formal syntax <color>where <color> = <rgb()> | <rgba()> | <hsl()> | <hsla()> | <hex-color> | <named-color> | currentcolor | <deprecated-system-color>where <rgb()> = rgb( <percentage>{3} [ / <alpha-value> ]?
... ) | rgb( <number>{3} [ / <alpha-value> ]?
... ) | rgb( <percentage>#{3} , <alpha-value>?
...And 10 more matches

-ms-scrollbar-track-color - Archive of obsolete content
formal syntax <color>where <color> = <rgb()> | <rgba()> | <hsl()> | <hsla()> | <hex-color> | <named-color> | currentcolor | <deprecated-system-color>where <rgb()> = rgb( <percentage>{3} [ / <alpha-value> ]?
... ) | rgb( <number>{3} [ / <alpha-value> ]?
... ) | rgb( <percentage>#{3} , <alpha-value>?
...And 10 more matches

-webkit-border-before - CSS: Cascading Style Sheets
the transparent keyword maps to rgba(0,0,0,0).animation typediscrete formal syntax <'border-width'> | <'border-style'> | <'color'>where <color> = <rgb()> | <rgba()> | <hsl()> | <hsla()> | <hex-color> | <named-color> | currentcolor | <deprecated-system-color>where <rgb()> = rgb( <percentage>{3} [ / <alpha-value> ]?
... ) | rgb( <number>{3} [ / <alpha-value> ]?
... ) | rgb( <percentage>#{3} , <alpha-value>?
...And 10 more matches

-webkit-tap-highlight-color - CSS: Cascading Style Sheets
formal definition initial valueblackapplies toall elementsinheritednocomputed valueas specifiedanimation typediscrete formal syntax <color>where <color> = <rgb()> | <rgba()> | <hsl()> | <hsla()> | <hex-color> | <named-color> | currentcolor | <deprecated-system-color>where <rgb()> = rgb( <percentage>{3} [ / <alpha-value> ]?
... ) | rgb( <number>{3} [ / <alpha-value> ]?
... ) | rgb( <percentage>#{3} , <alpha-value>?
...And 10 more matches

-webkit-text-fill-color - CSS: Cascading Style Sheets
formal definition initial valuecurrentcolorapplies toall elementsinheritedyescomputed valuecomputed coloranimation typea color formal syntax <color>where <color> = <rgb()> | <rgba()> | <hsl()> | <hsla()> | <hex-color> | <named-color> | currentcolor | <deprecated-system-color>where <rgb()> = rgb( <percentage>{3} [ / <alpha-value> ]?
... ) | rgb( <number>{3} [ / <alpha-value> ]?
... ) | rgb( <percentage>#{3} , <alpha-value>?
...And 10 more matches

-webkit-text-stroke-color - CSS: Cascading Style Sheets
formal definition initial valuecurrentcolorapplies toall elementsinheritedyescomputed valuecomputed coloranimation typea color formal syntax <color>where <color> = <rgb()> | <rgba()> | <hsl()> | <hsla()> | <hex-color> | <named-color> | currentcolor | <deprecated-system-color>where <rgb()> = rgb( <percentage>{3} [ / <alpha-value> ]?
... ) | rgb( <number>{3} [ / <alpha-value> ]?
... ) | rgb( <percentage>#{3} , <alpha-value>?
...And 10 more matches

-webkit-text-stroke - CSS: Cascading Style Sheets
idth: absolute <length>-webkit-text-stroke-color: computed coloranimation typeas each of the properties of the shorthand:-webkit-text-stroke-width: discrete-webkit-text-stroke-color: a color formal syntax <length> | <color>where <color> = <rgb()> | <rgba()> | <hsl()> | <hsla()> | <hex-color> | <named-color> | currentcolor | <deprecated-system-color>where <rgb()> = rgb( <percentage>{3} [ / <alpha-value> ]?
... ) | rgb( <number>{3} [ / <alpha-value> ]?
... ) | rgb( <percentage>#{3} , <alpha-value>?
...And 10 more matches

backdrop-filter - CSS: Cascading Style Sheets
e> )<invert()> = invert( <number-percentage> )<opacity()> = opacity( [ <number-percentage> ] )<saturate()> = saturate( <number-percentage> )<sepia()> = sepia( <number-percentage> )where <number-percentage> = <number> | <percentage><color> = <rgb()> | <rgba()> | <hsl()> | <hsla()> | <hex-color> | <named-color> | currentcolor | <deprecated-system-color>where <rgb()> = rgb( <percentage>{3} [ / <alpha-value> ]?
... ) | rgb( <number>{3} [ / <alpha-value> ]?
... ) | rgb( <percentage>#{3} , <alpha-value>?
...And 10 more matches

background-color - CSS: Cascading Style Sheets
it also applies to ::first-letter and ::first-line.inheritednocomputed valuecomputed coloranimation typea color formal syntax <color>where <color> = <rgb()> | <rgba()> | <hsl()> | <hsla()> | <hex-color> | <named-color> | currentcolor | <deprecated-system-color>where <rgb()> = rgb( <percentage>{3} [ / <alpha-value> ]?
... ) | rgb( <number>{3} [ / <alpha-value> ]?
... ) | rgb( <percentage>#{3} , <alpha-value>?
...And 10 more matches

border-block-end - CSS: Cascading Style Sheets
ranimation typeas each of the properties of the shorthand:border-block-end-color: a colorborder-block-end-style: discreteborder-block-end-width: a length formal syntax <'border-top-width'> | <'border-top-style'> | <'color'>where <color> = <rgb()> | <rgba()> | <hsl()> | <hsla()> | <hex-color> | <named-color> | currentcolor | <deprecated-system-color>where <rgb()> = rgb( <percentage>{3} [ / <alpha-value> ]?
... ) | rgb( <number>{3} [ / <alpha-value> ]?
... ) | rgb( <percentage>#{3} , <alpha-value>?
...And 10 more matches

border-block-start - CSS: Cascading Style Sheets
tion typeas each of the properties of the shorthand:border-block-start-color: a colorborder-block-start-style: discreteborder-block-start-width: a length formal syntax <'border-top-width'> | <'border-top-style'> | <'color'>where <color> = <rgb()> | <rgba()> | <hsl()> | <hsla()> | <hex-color> | <named-color> | currentcolor | <deprecated-system-color>where <rgb()> = rgb( <percentage>{3} [ / <alpha-value> ]?
... ) | rgb( <number>{3} [ / <alpha-value> ]?
... ) | rgb( <percentage>#{3} , <alpha-value>?
...And 10 more matches

border-block - CSS: Cascading Style Sheets
width: the absolute length or 0 if border-top-style is none or hiddenborder-top-style: as specifiedborder-top-color: computed coloranimation typediscrete formal syntax <'border-top-width'> | <'border-top-style'> | <'color'>where <color> = <rgb()> | <rgba()> | <hsl()> | <hsla()> | <hex-color> | <named-color> | currentcolor | <deprecated-system-color>where <rgb()> = rgb( <percentage>{3} [ / <alpha-value> ]?
... ) | rgb( <number>{3} [ / <alpha-value> ]?
... ) | rgb( <percentage>#{3} , <alpha-value>?
...And 10 more matches

border-bottom - CSS: Cascading Style Sheets
rder-bottom-width: a length formal syntax <line-width> | <line-style> | <color>where <line-width> = <length> | thin | medium | thick<line-style> = none | hidden | dotted | dashed | solid | double | groove | ridge | inset | outset<color> = <rgb()> | <rgba()> | <hsl()> | <hsla()> | <hex-color> | <named-color> | currentcolor | <deprecated-system-color>where <rgb()> = rgb( <percentage>{3} [ / <alpha-value> ]?
... ) | rgb( <number>{3} [ / <alpha-value> ]?
... ) | rgb( <percentage>#{3} , <alpha-value>?
...And 10 more matches

border-color - CSS: Cascading Style Sheets
rborder-top-color: computed coloranimation typeas each of the properties of the shorthand:border-bottom-color: a colorborder-left-color: a colorborder-right-color: a colorborder-top-color: a color formal syntax <color>{1,4}where <color> = <rgb()> | <rgba()> | <hsl()> | <hsla()> | <hex-color> | <named-color> | currentcolor | <deprecated-system-color>where <rgb()> = rgb( <percentage>{3} [ / <alpha-value> ]?
... ) | rgb( <number>{3} [ / <alpha-value> ]?
... ) | rgb( <percentage>#{3} , <alpha-value>?
...And 10 more matches

border-inline-end - CSS: Cascading Style Sheets
imation typeas each of the properties of the shorthand:border-inline-end-color: a colorborder-inline-end-style: discreteborder-inline-end-width: a length formal syntax <'border-top-width'> | <'border-top-style'> | <'color'>where <color> = <rgb()> | <rgba()> | <hsl()> | <hsla()> | <hex-color> | <named-color> | currentcolor | <deprecated-system-color>where <rgb()> = rgb( <percentage>{3} [ / <alpha-value> ]?
... ) | rgb( <number>{3} [ / <alpha-value> ]?
... ) | rgb( <percentage>#{3} , <alpha-value>?
...And 10 more matches

border-inline-start - CSS: Cascading Style Sheets
n typeas each of the properties of the shorthand:border-inline-start-color: a colorborder-inline-start-style: discreteborder-inline-start-width: a length formal syntax <'border-top-width'> | <'border-top-style'> | <'color'>where <color> = <rgb()> | <rgba()> | <hsl()> | <hsla()> | <hex-color> | <named-color> | currentcolor | <deprecated-system-color>where <rgb()> = rgb( <percentage>{3} [ / <alpha-value> ]?
... ) | rgb( <number>{3} [ / <alpha-value> ]?
... ) | rgb( <percentage>#{3} , <alpha-value>?
...And 10 more matches

border-inline - CSS: Cascading Style Sheets
width: the absolute length or 0 if border-top-style is none or hiddenborder-top-style: as specifiedborder-top-color: computed coloranimation typediscrete formal syntax <'border-top-width'> | <'border-top-style'> | <'color'>where <color> = <rgb()> | <rgba()> | <hsl()> | <hsla()> | <hex-color> | <named-color> | currentcolor | <deprecated-system-color>where <rgb()> = rgb( <percentage>{3} [ / <alpha-value> ]?
... ) | rgb( <number>{3} [ / <alpha-value> ]?
... ) | rgb( <percentage>#{3} , <alpha-value>?
...And 10 more matches

border-left-color - CSS: Cascading Style Sheets
it also applies to ::first-letter.inheritednocomputed valuecomputed coloranimation typea color formal syntax <color>where <color> = <rgb()> | <rgba()> | <hsl()> | <hsla()> | <hex-color> | <named-color> | currentcolor | <deprecated-system-color>where <rgb()> = rgb( <percentage>{3} [ / <alpha-value> ]?
... ) | rgb( <number>{3} [ / <alpha-value> ]?
... ) | rgb( <percentage>#{3} , <alpha-value>?
...And 10 more matches

border-left - CSS: Cascading Style Sheets
border-left-width: a length formal syntax <line-width> | <line-style> | <color>where <line-width> = <length> | thin | medium | thick<line-style> = none | hidden | dotted | dashed | solid | double | groove | ridge | inset | outset<color> = <rgb()> | <rgba()> | <hsl()> | <hsla()> | <hex-color> | <named-color> | currentcolor | <deprecated-system-color>where <rgb()> = rgb( <percentage>{3} [ / <alpha-value> ]?
... ) | rgb( <number>{3} [ / <alpha-value> ]?
... ) | rgb( <percentage>#{3} , <alpha-value>?
...And 10 more matches

border-right-color - CSS: Cascading Style Sheets
it also applies to ::first-letter.inheritednocomputed valuecomputed coloranimation typea color formal syntax <color>where <color> = <rgb()> | <rgba()> | <hsl()> | <hsla()> | <hex-color> | <named-color> | currentcolor | <deprecated-system-color>where <rgb()> = rgb( <percentage>{3} [ / <alpha-value> ]?
... ) | rgb( <number>{3} [ / <alpha-value> ]?
... ) | rgb( <percentage>#{3} , <alpha-value>?
...And 10 more matches

border-right - CSS: Cascading Style Sheets
order-right-width: a length formal syntax <line-width> | <line-style> | <color>where <line-width> = <length> | thin | medium | thick<line-style> = none | hidden | dotted | dashed | solid | double | groove | ridge | inset | outset<color> = <rgb()> | <rgba()> | <hsl()> | <hsla()> | <hex-color> | <named-color> | currentcolor | <deprecated-system-color>where <rgb()> = rgb( <percentage>{3} [ / <alpha-value> ]?
... ) | rgb( <number>{3} [ / <alpha-value> ]?
... ) | rgb( <percentage>#{3} , <alpha-value>?
...And 10 more matches

border-top-color - CSS: Cascading Style Sheets
it also applies to ::first-letter.inheritednocomputed valuecomputed coloranimation typea color formal syntax <color>where <color> = <rgb()> | <rgba()> | <hsl()> | <hsla()> | <hex-color> | <named-color> | currentcolor | <deprecated-system-color>where <rgb()> = rgb( <percentage>{3} [ / <alpha-value> ]?
... ) | rgb( <number>{3} [ / <alpha-value> ]?
... ) | rgb( <percentage>#{3} , <alpha-value>?
...And 10 more matches

border-top - CSS: Cascading Style Sheets
eborder-top-width: a length formal syntax <line-width> | <line-style> | <color>where <line-width> = <length> | thin | medium | thick<line-style> = none | hidden | dotted | dashed | solid | double | groove | ridge | inset | outset<color> = <rgb()> | <rgba()> | <hsl()> | <hsla()> | <hex-color> | <named-color> | currentcolor | <deprecated-system-color>where <rgb()> = rgb( <percentage>{3} [ / <alpha-value> ]?
... ) | rgb( <number>{3} [ / <alpha-value> ]?
... ) | rgb( <percentage>#{3} , <alpha-value>?
...And 10 more matches

box-shadow - CSS: Cascading Style Sheets
&& <length>{2,4} && <color>?where <color> = <rgb()> | <rgba()> | <hsl()> | <hsla()> | <hex-color> | <named-color> | currentcolor | <deprecated-system-color>where <rgb()> = rgb( <percentage>{3} [ / <alpha-value> ]?
... ) | rgb( <number>{3} [ / <alpha-value> ]?
... ) | rgb( <percentage>#{3} , <alpha-value>?
...And 10 more matches

caret-color - CSS: Cascading Style Sheets
definition initial valueautoapplies toall elementsinheritedyescomputed valueauto is computed as specified and <color> values are computed as defined for the color property.animation typea color formal syntax auto | <color>where <color> = <rgb()> | <rgba()> | <hsl()> | <hsla()> | <hex-color> | <named-color> | currentcolor | <deprecated-system-color>where <rgb()> = rgb( <percentage>{3} [ / <alpha-value> ]?
... ) | rgb( <number>{3} [ / <alpha-value> ]?
... ) | rgb( <percentage>#{3} , <alpha-value>?
...And 10 more matches

color - CSS: Cascading Style Sheets
the transparent keyword maps to rgba(0,0,0,0).animation typea color formal syntax <color>where <color> = <rgb()> | <rgba()> | <hsl()> | <hsla()> | <hex-color> | <named-color> | currentcolor | <deprecated-system-color>where <rgb()> = rgb( <percentage>{3} [ / <alpha-value> ]?
... ) | rgb( <number>{3} [ / <alpha-value> ]?
... ) | rgb( <percentage>#{3} , <alpha-value>?
...And 10 more matches

column-rule-color - CSS: Cascading Style Sheets
formal definition initial valuecurrentcolorapplies tomulticol elementsinheritednocomputed valuecomputed coloranimation typea color formal syntax <color>where <color> = <rgb()> | <rgba()> | <hsl()> | <hsla()> | <hex-color> | <named-color> | currentcolor | <deprecated-system-color>where <rgb()> = rgb( <percentage>{3} [ / <alpha-value> ]?
... ) | rgb( <number>{3} [ / <alpha-value> ]?
... ) | rgb( <percentage>#{3} , <alpha-value>?
...And 10 more matches

filter - CSS: Cascading Style Sheets
e> )<invert()> = invert( <number-percentage> )<opacity()> = opacity( [ <number-percentage> ] )<saturate()> = saturate( <number-percentage> )<sepia()> = sepia( <number-percentage> )where <number-percentage> = <number> | <percentage><color> = <rgb()> | <rgba()> | <hsl()> | <hsla()> | <hex-color> | <named-color> | currentcolor | <deprecated-system-color>where <rgb()> = rgb( <percentage>{3} [ / <alpha-value> ]?
... ) | rgb( <number>{3} [ / <alpha-value> ]?
... ) | rgb( <percentage>#{3} , <alpha-value>?
...And 10 more matches

image() - CSS: Cascading Style Sheets
)where <image-tags> = ltr | rtl<image-src> = <url> | <string><color> = <rgb()> | <rgba()> | <hsl()> | <hsla()> | <hex-color> | <named-color> | currentcolor | <deprecated-system-color>where <rgb()> = rgb( <percentage>{3} [ / <alpha-value> ]?
... ) | rgb( <number>{3} [ / <alpha-value> ]?
... ) | rgb( <percentage>#{3} , <alpha-value>?
...And 10 more matches

outline-color - CSS: Cascading Style Sheets
the transparent keyword maps to rgba(0,0,0,0).animation typea color formal syntax <color> | invertwhere <color> = <rgb()> | <rgba()> | <hsl()> | <hsla()> | <hex-color> | <named-color> | currentcolor | <deprecated-system-color>where <rgb()> = rgb( <percentage>{3} [ / <alpha-value> ]?
... ) | rgb( <number>{3} [ / <alpha-value> ]?
... ) | rgb( <percentage>#{3} , <alpha-value>?
...And 10 more matches

scrollbar-color - CSS: Cascading Style Sheets
formal definition initial valueautoapplies toscrolling boxesinheritedyescomputed valueas specifiedanimation typea color formal syntax auto | dark | light | <color>{2}where <color> = <rgb()> | <rgba()> | <hsl()> | <hsla()> | <hex-color> | <named-color> | currentcolor | <deprecated-system-color>where <rgb()> = rgb( <percentage>{3} [ / <alpha-value> ]?
... ) | rgb( <number>{3} [ / <alpha-value> ]?
... ) | rgb( <percentage>#{3} , <alpha-value>?
...And 10 more matches

text-decoration-color - CSS: Cascading Style Sheets
it also applies to ::first-letter and ::first-line.inheritednocomputed valuecomputed coloranimation typea color formal syntax <color>where <color> = <rgb()> | <rgba()> | <hsl()> | <hsla()> | <hex-color> | <named-color> | currentcolor | <deprecated-system-color>where <rgb()> = rgb( <percentage>{3} [ / <alpha-value> ]?
... ) | rgb( <number>{3} [ / <alpha-value> ]?
... ) | rgb( <percentage>#{3} , <alpha-value>?
...And 10 more matches

text-emphasis-color - CSS: Cascading Style Sheets
formal definition initial valuecurrentcolorapplies toall elementsinheritednocomputed valuecomputed coloranimation typea color formal syntax <color>where <color> = <rgb()> | <rgba()> | <hsl()> | <hsla()> | <hex-color> | <named-color> | currentcolor | <deprecated-system-color>where <rgb()> = rgb( <percentage>{3} [ / <alpha-value> ]?
... ) | rgb( <number>{3} [ / <alpha-value> ]?
... ) | rgb( <percentage>#{3} , <alpha-value>?
...And 10 more matches

text-shadow - CSS: Cascading Style Sheets
]where <color> = <rgb()> | <rgba()> | <hsl()> | <hsla()> | <hex-color> | <named-color> | currentcolor | <deprecated-system-color>where <rgb()> = rgb( <percentage>{3} [ / <alpha-value> ]?
... ) | rgb( <number>{3} [ / <alpha-value> ]?
... ) | rgb( <percentage>#{3} , <alpha-value>?
...And 10 more matches

NSS tools : certutil
-v check the validity of a certificate and its attributes.
...use when checking certificate validity with the -v option.
... --dump-ext-val oid for single cert, print binary der encoding of extension oid.
...And 9 more matches

certutil
-v check the validity of a certificate and its attributes.
...use when checking certificate validity with the -v option.
... -l display detailed information when validating a certificate with the -v option.
...And 8 more matches

appearance (-moz-appearance, -webkit-appearance) - CSS: Cascading Style Sheets
me safari edge media-enter-fullscreen-button div{ color: black; -webkit-appearance: media-enter-fullscreen-button; } <div>lorem</div> chrome safari media-exit-fullscreen-button div{ color: black; -webkit-appearance: media-exit-fullscreen-button; } <div>lorem</div> chrome safari media-fullscreen-volume-slider div{ color: black; -moz-appearance: media-fullscreen-volume-slider; -webkit-appearance: media-fullscreen-volume-slider; } <div>lorem</div> safari media-fullscreen-volume-slider-thumb div{ color: black; -moz-appearance: media-fullscreen-volume-slider-thumb; -webkit-appearance: media-fullscreen-volume-slider-thumb; } <div...
...ed-captions-button; } <div>lorem</div> chrome safari media-slider div{ color: black; -webkit-appearance: media-slider; } <div>lorem</div> chrome safari edge media-sliderthumb div{ color: black; -webkit-appearance: media-sliderthumb; } <div>lorem</div> chrome safari edge media-volume-slider-container div{ color: black; -webkit-appearance: media-volume-slider-container; } <div>lorem</div> chrome safari media-volume-slider-mute-button div{ color: black; -moz-appearance: media-volume-slider-mute-button; -webkit-appearance: media-volume-slider-mute-button; } <div>lorem</div> safari me...
...dia-volume-slider div{ color: black; -webkit-appearance: media-volume-slider; } <div>lorem</div> chrome safari media-volume-sliderthumb div{ color: black; -webkit-appearance: media-volume-slider-thumb; } <div>lorem</div> chrome safari media-controls-background div{ color: black; -webkit-appearance: media-controls-background; } <div>lorem</div> chrome safari media-controls-dark-bar-background div{ color: black; -moz-appearance: media-controls-dark-bar-background; -webkit-appearance: media-controls-dark-bar-background; } <div>lorem</div> safari media-controls-fullscreen-background div{ color: black;...
...And 7 more matches

font - CSS: Cascading Style Sheets
constituent properties this property is a shorthand for the following css properties: font-family font-size font-stretch font-style font-variant font-weight line-height syntax the font property may be specified as either a single keyword, which will select a system font, or as a shorthand for various font-related properties.
... if font is specified as a shorthand for several font-related properties, then: it must include values for: <font-size> <font-family> it may optionally include values for: <font-style> <font-variant> <font-weight> <font-stretch> <line-height> font-style, font-variant and font-weight must precede font-size font-variant may only specify the values defined in css 2.1, that is normal and small-caps font-stretch may only be a single keyword value.
... <'font-variant'> see the font-variant css property.
...And 7 more matches

NSS Tools certutil
-v check the validity of a certificate and its attributes.
...use when checking certificate validity with the -v option.
... -l display detailed information when validating a certificate with the -v option.
...And 6 more matches

Starting WebLock
the nsicategoryservice maintains sets of name-value pairs like the one below.
...each category contains a set of name-value pairs.
... for example, you might have a category named "important people" in which the name-value pairs would be names and phone numbers.
...And 6 more matches

Index - Web APIs
468 cssstylerule.stylemap the stylemap read-only property of the cssstylerule interface returns a stylepropertymap object which provides access the rule's property-value pairs.
...it is equivalent to the font-variant descriptor.
... 1426 formdataentryvalue formdataentryvalue a string which represents a single value from a set of formdata key-value pairs.
...And 6 more matches

Linear-gradient Generator - CSS: Cascading Style Sheets
<div id="container"> <div id="gradient-container" data-alpha="true"> </div> <div id="controls"> <div class="section"> <div class="title"> active point </div> <div class="property"> <div class="ui-input-slider" data-topic="point-position" data-info="position" data-unit="px" data-min="-1000" data-value="0" data-max="1000" data-sensivity="5"></div> <div id="delete-point" class="button"> delete point </div> </div> <div class="ui-color-picker" data-topic="picker"></div> </div> <div class="section"> <div class="title"> active axis </div> <div class="property"> <div cl...
...ass="name"> axis unit </div> <div class="ui-dropdown" data-topic="axis-unit" data-selected="1"> <div data-value='px'> pixels (px) </div> <div data-value='%'> percentage (%) </div> </div> <div id="delete-axis" class="button"> delete line </div> </div> <div class="property"> <div class="ui-slider" data-topic="axis-rotation" data-info="rotation" data-min="-180" data-value="0" data-max="180"></div> </div> </div> <div id="tool-section" class="section"> <div class="title"> tool settings </div> <div class="property"> <div clas...
...id #ddd; background-color: #fff; display: table; -moz-user-select: none; -webkit-user-select: none; -ms-user-select: none; user-select: none; } .ui-color-picker .picking-area { width: 198px; height: 198px; margin: 5px; border: 1px solid #ddd; position: relative; float: left; display: table; } .ui-color-picker .picking-area:hover { cursor: default; } /* hsv format - hue-saturation-value(brightness) */ .ui-color-picker .picking-area { background: url("images/picker_mask.png"); background: -moz-linear-gradient(bottom, #000 0%, rgba(0, 0, 0, 0) 100%), -moz-linear-gradient(left, #fff 0%, rgba(255, 255, 255, 0) 100%); background: -webkit-linear-gradient(bottom, #000 0%, rgba(0, 0, 0, 0) 100%), -webkit-linear-gradient(left, #fff 0%, rgba(255, 255, 255, 0) 100%); backg...
...And 6 more matches

itemprop - HTML: Hypertext Markup Language
every html element can have an itemprop attribute specified, and an itemprop consists of a name-value pair.
... each name-value pair is called a property, and a group of one or more properties forms an item.
...rop="nationality">british</span>.</p> </div> one property, "image", whose value is a url <div itemscope> <img itemprop="image" src="google-logo.png" alt="google"> </div> when a string value can't be easily read and understood by a person (e.g., a long string of numbers and letters), it can be displayed using the value attribute of the data element, with the more easily-understood-by-a human-version given in the element's contents (which is not part of the structured data - see example below).
...And 6 more matches

Fundamental text and font styling - Learn web development
once you've become used to using the above, you should also explore the following: font styles: font-variant: switch between small caps and normal font alternatives.
... font-variant-alternates: control the use of alternate glyphs for a given font-face.
... font-variant-caps: control the use of alternate capital glyphs.
...And 5 more matches

Using the progressbar role - Accessibility
if the actual value of the progressbar can be determined, the developer has to indicate this progress using the aria-valuenow, aria-valuemin, and aria-valuemax attributes.
... if the progress value is indeterminate, the developer should omit the aria-valuenow attribute.
... as the task progresses, the aria-valuenow value has to be updated dynamically to indicate this progress to assistive technology products.
...And 5 more matches

jpm - Archive of obsolete content
jpm usage is: jpm [command] [options] jpm supports the following global options: -h, --help - show a help message and exit -v, --version - print the jpm version number --addon-dir - directory for your source code, defaulting to the current directory installation jpm is distributed with the node package manager npm.
... to test your installation, run: /usr/bin/env node -v if you get an error message saying /usr/bin/env: node: no such file or directory and you have installed nodejs through a package manager, nodejs may have been installed under a different executable name.
... -v --verbose verbose operation.
...And 4 more matches

Starting up and shutting down a WebXR session - Web APIs
first among these is that use of immersive-vr mode—which entirely replaces the user's view of the world—requires that the xr-spatial-tracking feature policy be in place.
... const immersiveok = await navigator.xr.issessionsupported("immersive-vr"); if (immersiveok) { // create and use an immersive vr session } else { // create an inline session instead, or tell the user about the // incompatibility if inline is required } creating and starting the session a webxr session is represented by an xrsession object.
...fundamentally, that looks like this: xr.requestsession("immersive-vr").then((session) => { xrsession = session; /* continue to set up the session */ }); note the parameter passed into requestsession() in this code snippet: immersive-vr.
...And 4 more matches

XRSystem: requestSession() - Web APIs
immersive-vr indicates that the rendered session will be displayed using an immersive xr device in vr mode; it is not intended to be overlaid or integrated into the surrounding environment.
... exceptions this method doesn't throw true exceptions; instead, it rejects the returned promise, passing into it a domexception whose name is one of the following: invalidstateerror the requested session mode is immersive-vr but there is already an immersive vr session either currently active or in the process of being set up.
... examples creating an immersive vr session the following example calls requestsession() requesting an "immersive-vr" session.
...And 4 more matches

Accessibility documentation index - Accessibility
26 using the aria-valuemax attribute aria, accessibility the aria-valuemax attribute is used to define the maximum value allowed for a range widget such as a slider, spinbutton or progressbar.
... 27 using the aria-valuemin attribute aria, accessibility, needscontent the aria-valuemin attribute is used to define the minimum value allowed for a range widget such as a slider, spinbutton or progressbar.
... if the aria-valuenow has a known maximum and minimum, the author should provide properties for aria-valuemax and aria-valuemin.the value of aria-valuemin must be less than or equal to the value of aria-valuemax.
...And 4 more matches

Border-image generator - CSS: Cascading Style Sheets
div> <!-- other-settings --> <div id="aditional-properties" class="category"> <div class="title"> aditional-properties </div> <div class="property"> <div class="name"> repeat-x </div> <div class="ui-dropdown border-repeat" data-topic="image-repeat-x" data-selected="2"> <div data-value="0">repeat</div> <div data-value="0">stretch</div> <div data-value="0">round</div> </div> </div> <div class="property"> <div class="name"> repeat-y </div> <div class="ui-dropdown border-repeat" data-topic="image-repeat-y" data-selected="2"> ...
... <div data-value="1">repeat</div> <div data-value="1">stretch</div> <div data-value="1">round</div> </div> </div> <div class="property"> <div class="ui-input-slider" data-topic="font-size" data-info="em size" data-unit="px" data-value="12" data-sensivity="3"> </div> </div> <div class="property"> <div class="ui-input-slider" data-topic="preview-width" data-info="width" data-unit=" px" data-min="10" data-max="10000" data-sensivity="3"></div> </div> <div class="property"> <div class="ui-input-slid...
...e.clientx - startx) / obj.sensivity | 0; var value = delta * obj.step + start_value; setvalue(obj.topic, value); }; return slider; }; var inputslider = function(node) { var min = parsefloat(node.getattribute('data-min')); var max = parsefloat(node.getattribute('data-max')); var step = parsefloat(node.getattribute('data-step')); var value = parsefloat(node.getattribute('data-value')); var topic = node.getattribute('data-topic'); var unit = node.getattribute('data-unit'); var name = node.getattribute('data-info'); var sensivity = node.getattribute('data-sensivity') | 0; var precision = node.getattribute('data-precision') | 0; this.min = isnan(min) ?
...And 4 more matches

Box-shadow generator - CSS: Cascading Style Sheets
it="px"></div> </div> <div class="slidergroup"> <div class="ui-slider-name"> spread </div> <div class="ui-slider-btn-set" data-topic="spread" data-type="sub"></div> <div class="ui-slider" data-topic="spread" data-min="-100" data-max="100" data-step="1" data-value="50"> </div> <div class="ui-slider-btn-set" data-topic="spread" data-type="add"></div> <div class="ui-slider-input" data-topic="spread" data-unit="px"></div> </div> </div> </div> <div id="element_properties" class="category"> <div class="title"> ...
... </div> <div id="transform_rotate" class="slidergroup"> <div class="ui-slider-name"> rotate </div> <div class="ui-slider-btn-set" data-topic="rotate" data-type="sub"></div> <div class="ui-slider" data-topic="rotate" data-min="-360" data-max="360" data-step="1" data-value="0"> </div> <div class="ui-slider-btn-set" data-topic="rotate" data-type="add"></div> <div class="ui-slider-input" data-topic="rotate" data-unit="deg"></div> </div> <div class="slidergroup"> <div class="ui-slider-name"> width </div> <d...
...iv class="ui-slider-btn-set" data-topic="width" data-type="sub"></div> <div class="ui-slider" data-topic="width" data-min="0" data-max="1000" data-step="1" data-value="200"> </div> <div class="ui-slider-btn-set" data-topic="width" data-type="add"></div> <div class="ui-slider-input" data-topic="width" data-unit="px"></div> </div> <div class="slidergroup"> <div class="ui-slider-name"> height </div> <div class="ui-slider-btn-set" data-topic="height" data-type="sub"></div> <div class="ui-slider" data-topic="height" data-min="0" data-ma...
...And 4 more matches

border-radius - CSS: Cascading Style Sheets
it is used only in the one-value syntax.
...it is used only in the two-value syntax.
...it is used only in the two- and three-value syntaxes.
...And 4 more matches

HTML documentation index - HTML: Hypertext Markup Language
every html element can have an itemprop attribute specified, and an itemprop consists of a name-value pair.
... each name-value pair is called a property, and a group of one or more properties forms an item.
...specifying the itemscope attribute for an element creates a new item, which results in a number of name-value pairs that are associated with the element.
...And 4 more matches

Set-Cookie - HTTP
header type response header forbidden header name no forbidden response-header name yes syntax set-cookie: <cookie-name>=<cookie-value> set-cookie: <cookie-name>=<cookie-value>; expires=<date> set-cookie: <cookie-name>=<cookie-value>; max-age=<non-zero-digit> set-cookie: <cookie-name>=<cookie-value>; domain=<domain-value> set-cookie: <cookie-name>=<cookie-value>; path=<path-value> set-cookie: <cookie-name>=<cookie-value>; secure set-cookie: <cookie-name>=<cookie-value>; httponly set-cookie: <cookie-name>=<cookie-value>; sam...
...esite=strict set-cookie: <cookie-name>=<cookie-value>; samesite=lax set-cookie: <cookie-name>=<cookie-value>; samesite=none // multiple attributes are also possible, for example: set-cookie: <cookie-name>=<cookie-value>; domain=<domain-value>; secure; httponly attributes <cookie-name>=<cookie-value> a cookie begins with a name-value pair: a <cookie-name> can be any us-ascii characters, except control characters, spaces, or tabs.
... a <cookie-value> can optionally be wrapped in double quotes and include any us-ascii characters excluding control characters, whitespace, double quotes, comma, semicolon, and backslash.
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SVG Presentation Attributes - SVG: Scalable Vector Graphics
alignment-baseline baseline-shift clip clip-path clip-rule color color-interpolation color-interpolation-filters color-profile color-rendering cursor direction display dominant-baseline enable-background fill fill-opacity fill-rule filter flood-color flood-opacity font-family font-size font-size-adjust font-stretch font-style font-variant font-weight glyph-orientation-horizontal glyph-orientation-vertical image-rendering kerning letter-spacing lighting-color marker-end marker-mid marker-start mask opacity overflow pointer-events shape-rendering solid-color solid-opacity stop-color stop-opacity stroke stroke-dasharray stroke-dashoffset stroke-linecap stroke-linejoin stroke-miterlimit stroke-opacity ...
... value: normal|italic|oblique; animatable: yes font-variant it specifies whether a font should be used with some of their variation such as small caps or ligatures.
... value: see css font-variant; animatable: yes font-weight it specifies the weight (or boldness) of the font.
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Running Tamarin performance tests - Archive of obsolete content
performance test options there are a variety of options available with runtests.py - here is the help text followed by explanations for some options: $ ./runtests.py -h usage: runtests.py [options] [tests] -v --verbose enable additional output -e --avm avmplus command to use -a --asc compiler to use -g --globalabc deprecated but still works - use builtin.abc (used to be location of global.abc) -b --builtinabc location of builtin.abc -s --shellabc location of shell_toplevel.abc -x --exclude comma separated list of directories to skip -h --help displa...
...config sets the config string [default os-tvm] -q --quiet display minimum output during testrun -l --log also log all output to given logfile --summaryonly only display final summary --rebuildtests rebuild the tests only - do not run against vm --showtimes shows the time for each test --ascargs args to pass to asc on rebuild of test files --vmargs args to pass to vm --timeout max time to run all tests --testtimeout max time to let a test run, in sec (default -1 = never timeout) --html also create an html output file --notimecheck do not recompile .abc if timestamp is older than .as --java location of java executable (default=java) --javaargs arguments to pass to java ...
... --vmversion specify vmversion e.g.
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Index - MDN Web Docs Glossary: Definitions of Web-related terms
259 mvc glossary, infrastructure, intro, mvc, model view controller mvc (model-view-controller) is a pattern in software design commonly used to implement user interfaces, data, and controlling logic.
...some other design patterns are based on mvc, such as mvvm (model-view-viewmodel), mvp (model-view-presenter), and mvw (model-view-whatever).
... 264 media (audio-visual presentation) audio, glossary, media, multimedia, video the term media (more accurately, multimedia) refers to audio, video, or combined audio-visual material such as music, recorded speech, movies, tv shows, or any other form of content that is presented over a period of time.
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NSS tools : signtool
synopsis signtool [-k keyname] -h -h -l -l -m -v -w -g nickname -s size -b basename [[-c compression level] ] [[-d cert-dir] ] [[-i installer script] ] [[-m metafile] ] [[-x name] ] [[-f filename] ] [[-t|--token tokenname] ] [[-e extension] ] [[-o] ] [[-z] ] [[-x] ] [[--outfile] ] [[--verbose value] ] [[--norecurse] ] [[--leavearc] ] [[-j directory] ] [[-z jarfile] ] [[-o] ] [[-p password] ] [directory-tree] [archive] description the signing tool, signtool, creates digital signatures and uses a java archive (jar) file to associate the signatures with files in a directory.
...when you use signtool -v, these entries are displayed with the string not present.
... -v archive displays the contents of an archive and verifies the cryptographic integrity of the digital signatures it contains and the files with which they are associated.
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SubtleCrypto.sign() - Web APIs
syntax const signature = crypto.subtle.sign(algorithm, key, data); parameters algorithm is a string or object that specifies the signature algorithm to use and its parameters: to use rsassa-pkcs1-v1_5, pass the string "rsassa-pkcs1-v1_5" or an object of the form { "name": "rsassa-pkcs1-v1_5" }.
... three of these algorithms — rsassa-pkcs1-v1_5, rsa-pss, and ecdsa — are public-key cryptosystems that use the private key for signing and the public key for verification.
... rsassa-pkcs1-v1_5 the rsassa-pkcs1-v1_5 algorithm is specified in rfc 3447.
...And 3 more matches

SubtleCrypto.verify() - Web APIs
to use rsassa-pkcs1-v1_5, pass the string "rsassa-pkcs1-v1_5" or an object of the form { "name": "rsassa-pkcs1-v1_5" }.
... rsassa-pkcs1-v1_5 this code uses a public key to verify a signature.
...*/ async function verifymessage(publickey) { const signaturevalue = document.queryselector(".rsassa-pkcs1 .signature-value"); signaturevalue.classlist.remove("valid", "invalid"); let encoded = getmessageencoding(); let result = await window.crypto.subtle.verify( "rsassa-pkcs1-v1_5", publickey, signature, encoded ); signaturevalue.classlist.add(result ?
...And 3 more matches

Using the slider role - Accessibility
as the user interacts with the thumb, the application must programmatically adjust the slider's aria-valuenow (and possible aria-valuetext) attribute to reflect the current value.
...the application will programmatically update the value of aria-valuenow in response to user input.
... <label for="fader">volume</label> <input type="range" id="fader" min="1" max="100" value="50" step="1" aria-valuemin="1" aria-valuemax="100" aria-valuenow="50" oninput="outputupdate(value)"> <output for="fader" id="volume">50</output> the following code snippet allows you to return the output as it is updated by user input: function outputupdate(vol) { document.queryselector('#volume').value = vol; } example 2: text values sometimes, a slider is used to choose a value that is not, semantically, a number.
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WebKit CSS extensions - CSS: Cascading Style Sheets
-border-before** -webkit-border-before-color** -webkit-border-before-style** -webkit-border-before-width** -webkit-border-end** -webkit-border-end-color** -webkit-border-end-style** -webkit-border-end-width** -webkit-border-fit -webkit-border-horizontal-spacing -webkit-border-start** -webkit-border-start-color** -webkit-border-start-style** -webkit-border-start-width** -webkit-border-vertical-spacing -webkit-box-align** -webkit-box-direction** -webkit-box-flex-group** -webkit-box-flex** -webkit-box-lines** -webkit-box-ordinal-group** -webkit-box-orient** -webkit-box-pack** -webkit-box-reflect** c -webkit-column-axis -webkit-column-break-after -webkit-column-break-before -webkit-column-break-inside -webkit-column-progression -webkit-cursor-visibility d-i ...
... a -webkit-align-content -webkit-align-items -webkit-align-self -webkit-animation -webkit-animation-delay -webkit-animation-direction -webkit-animation-duration -webkit-animation-fill-mode -webkit-animation-iteration-count -webkit-animation-name -webkit-animation-play-state -webkit-animation-timing-function b -webkit-backface-visibility -webkit-background-clip -webkit-background-origin -webkit-background-size -webkit-border-bottom-left-radius -webkit-border-bottom-right-radius -webkit-border-image -webkit-border-radius -webkit-border-top-left-radius -webkit-border-top-right-radius -webkit-box-decoration-break -webkit-box-shadow -webkit-box-sizing c -webkit-clip-path -webkit-column-count -webkit-column...
...it-column-gap -webkit-column-rule -webkit-column-rule-color -webkit-column-rule-style -webkit-column-rule-width -webkit-column-span -webkit-column-width -webkit-columns f -webkit-filter -webkit-flex -webkit-flex-basis -webkit-flex-direction -webkit-flex-flow -webkit-flex-grow -webkit-flex-shrink -webkit-flex-wrap -webkit-font-feature-settings -webkit-font-kerning -webkit-font-variant-ligatures g-j -webkit-grid -webkit-grid-area -webkit-grid-auto-columns -webkit-grid-auto-flow -webkit-grid-auto-rows -webkit-grid-column -webkit-grid-column-end -webkit-grid-column-gap -webkit-grid-column-start -webkit-grid-gap -webkit-grid-row -webkit-grid-row-end -webkit-grid-row-gap -webkit-grid-row-start -webkit-grid-template -webkit-grid-template-areas -webkit-grid...
...And 3 more matches

background-position - CSS: Cascading Style Sheets
1-value syntax: the value may be: the keyword value center, which centers the image.
... 2-value syntax: one value defines x and the other defines y.
... 3-value syntax: two values are keyword values, and the third is the offset for the preceding value: the first value is one of the keyword values top, left, bottom, right, or center.
...And 3 more matches

Audio and video manipulation - Developer guides
html we can set up our video player and <canvas> element like this: <video id="my-video" controls="true" width="480" height="270" crossorigin="anonymous"> <source src="https://udn.realityripple.com/samples/5b/8cd6da9c65.webm" type="video/webm"> <source src="https://udn.realityripple.com/samples/6f/08625b424a.m4v" type="video/mp4"> </video> <canvas id="my-canvas" width="480" height="270"></canvas> javascript this code handles altering the frames.
... var processor = { timercallback: function() { if (this.video.paused || this.video.ended) { return; } this.computeframe(); var self = this; settimeout(function () { self.timercallback(); }, 16); // roughly 60 frames per second }, doload: function() { this.video = document.getelementbyid("my-video"); this.c1 = document.getelementbyid("my-canvas"); this.ctx1 = this.c1.getcontext("2d"); var self = this; this.video.addeventlistener("play", function() { self.width = self.video.width; self.height = self.video.height; self.timercallback(); }, false); }, computeframe: function() { this.ctx1.drawimage(this.video, 0, 0, this.width, this.height); var frame = this.ctx1.getimagedata(0, 0, this.width, this.
... html <video id="my-video" controls src="https://udn.realityripple.com/samples/6f/08625b424a.m4v"> </video> javascript var myvideo = document.getelementbyid('my-video'); myvideo.playbackrate = 2; playable code <video id="my-video" controls="true" width="480" height="270"> <source src="https://udn.realityripple.com/samples/5b/8cd6da9c65.webm" type="video/webm"> <source src="https://udn.realityripple.com...
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Map - JavaScript
the map object holds key-value pairs and remembers the original insertion order of the keys.
... performance performs better in scenarios involving frequent additions and removals of key-value pairs.
... not optimized for frequent additions and removals of key-value pairs.
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CSS3 - Archive of obsolete content
the choice of alternative font faces using the css font-stretch, font-variant-alternates, font-variant-caps, font-variant-east-asian, font-variant-ligatures, font-variant-numeric, and font-variant-position properties.
... it also extends the related css font-variant shorthand property and introduces the @font-feature-values at-rule.
... at risk: due to insufficient browser support, the 2-value syntax of this property as well as the support for <string> values may be postponed to the next iteration of this module.
...And 2 more matches

Enc Dec MAC Using Key Wrap CertReq PKCS10 CSR
for ca also)\n\n", progname, "-g -s <subject> -r <csr>"); fprintf(stderr, "%s %s\n --to input and store cert (for ca also)\n\n", progname, "-a -n <nickname> -t <trust> -c <cert> [ -r <csr> -u <issuernickname> [-x <\"\">] -m <serialnumber> ]"); fprintf(stderr, "%s %s\n --to put cert in header\n\n", progname, "-h -n <nickname> -b <headerfilename> [-v <\"\">]"); fprintf(stderr, "%s %s\n --to find public key from cert in header and encrypt\n\n", progname, "-e -b <headerfilename> -i <ipfilename> -e <encryptfilename> "); fprintf(stderr, "%s %s\n --decrypt using corresponding private key \n\n", progname, "-d -b <headerfilename> -e <encryptfilename> -o <opfilename>"); fprintf(stderr, "%s %s\n --sign using ...
...private key \n\n", progname, "-s -b <headerfilename> -i <infilename> "); fprintf(stderr, "%s %s\n --verify using public key \n\n", progname, "-v -b <headerfilename> -i <ipfilename> "); fprintf(stderr, "options:\n\n"); fprintf(stderr, "%-30s - db directory path\n\n", "-d <dbdirpath>"); fprintf(stderr, "%-30s - db password [optional]\n\n", "-p <dbpwd>"); fprintf(stderr, "%-30s - db password file [optional]\n\n", "-f <dbpwdfile>"); fprintf(stderr, "%-30s - noise file name [optional]\n\n", "-z <noisefilename>"); fprintf(stderr, "%-30s - input file name\n\n", "-i <ipfilename>"); fprintf(stderr, "%-30s - header file name\n\n", "-b <headerfilename>"...
...ckname>"); fprintf(stderr, "%-30s - certificate signing request \n\n", "-r <csr>"); fprintf(stderr, "%-30s - generate a self-signed cert [optional]\n\n", "-x"); fprintf(stderr, "%-30s - to enable ascii [optional]\n\n", "-a"); fprintf(stderr, "%-30s - to save certificate to header file as sig verification [optional]\n\n", "-v"); exit(-1); } /* * validate the options used for generate csr command */ static void validategeneratecsrcommand(const char *progname, const char *dbdir, certname *subject, const char *subjectstr, const char *certreqfilename) { prbool validationfailed = pr_false; ...
...And 2 more matches

sample2
ntf(stderr, "%s %s\n --for generating cert request (for ca also)\n\n", progname, "-g -s <subject> -r <csr>"); fprintf(stderr, "%s %s\n --to input and store cert (for ca also)\n\n", progname, "-a -n <nickname> -t <trust> -c <cert> [ -r <csr> -u <issuernickname> [-x <\"\">] -m <serialnumber> ]"); fprintf(stderr, "%s %s\n --to put cert in header\n\n", progname, "-h -n <nickname> -b <headerfilename> [-v <\"\">]"); fprintf(stderr, "%s %s\n --to find public key from cert in header and encrypt\n\n", progname, "-e -b <headerfilename> -i <ipfilename> -e <encryptfilename> "); fprintf(stderr, "%s %s\n --decrypt using corresponding private key \n\n", progname, "-d -b <headerfilename> -e <encryptfilename> -o <opfilename>"); fprintf(stderr, "%s %s\n --sign using private key \n\n", progname, "-s -b <header...
...filename> -i <infilename> "); fprintf(stderr, "%s %s\n --verify using public key \n\n", progname, "-v -b <headerfilename> -i <ipfilename> "); fprintf(stderr, "options:\n\n"); fprintf(stderr, "%-30s - db directory path\n\n", "-d <dbdirpath>"); fprintf(stderr, "%-30s - db password [optional]\n\n", "-p <dbpwd>"); fprintf(stderr, "%-30s - db password file [optional]\n\n", "-f <dbpwdfile>"); fprintf(stderr, "%-30s - noise file name [optional]\n\n", "-z <noisefilename>"); fprintf(stderr, "%-30s - input file name\n\n", "-i <ipfilename>"); fprintf(stderr, "%-30s - header file name\n\n", "-b <headerfilename>"); fprintf(stderr, "%-30s - encrypt file name\n\n", "-e <encryptfilename>"); fprintf(stderr, "%-30s - output file name\n\n", "-o <opfilename>"); fprintf(stderr, "%-30s - certificate serial number...
..."); fprintf(stderr, "%-30s - certificate issuer nickname\n\n", "-u <issuernickname>"); fprintf(stderr, "%-30s - certificate signing request \n\n", "-r <csr>"); fprintf(stderr, "%-30s - generate a self-signed cert [optional]\n\n", "-x"); fprintf(stderr, "%-30s - to enable ascii [optional]\n\n", "-a"); fprintf(stderr, "%-30s - to save certificate to header file as sig verification [optional]\n\n", "-v"); exit(-1); } /* * validate the options used for generate csr command */ static void validategeneratecsrcommand(const char *progname, const char *dbdir, certname *subject, const char *subjectstr, const char *certreqfilename) { prbool validationfailed = pr_false; if (!subject) { pr_fprintf(pr_stderr, "%s -g -d %s -s: improperly formatted name: \"%s\"\n", progname, dbdir, subjectstr); validationfa...
...And 2 more matches

NSS tools : signver
synopsis signtool -a | -v -d directory [-a] [-i input_file] [-o output_file] [-s signature_file] [-v] description the signature verification tool, signver, is a simple command-line utility that unpacks a base-64-encoded pkcs#7 signed object and verifies the digital signature using standard cryptographic techniques.
... -v verifies the digital signature.
... -v enables verbose output.
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Autoconfiguration in Thunderbird
configuration server at isp given the email address "fred@example.com", thunderbird checks <https://autoconfig.example.com/mail/config-v1.1.xml?emailaddress=fred@example.com> (preferred) and <https://example.com/.well-known/autoconfig/mail/config-v1.1.xml> and the same urls with http (see section ssl below).
... if possible, please use <https://autoconfig.example.com/mail/config-v1.1.xml?emailaddress=fred@example.com>.
... small company if you are a small company, you can put the xml configuration file on your web server, at url <https://example.com/.well-known/autoconfig/mail/config-v1.1.xml> pointing to an xml file.
...And 2 more matches

Movement, orientation, and motion: A WebXR example - Web APIs
the code looks like this: const xrotationdegreespersecond = 25; const yrotationdegreespersecond = 15; const zrotationdegreespersecond = 35; const enablerotation = true; const allowmouserotation = true; const allowkeyboardmotion = true; const enableforcepolyfill = false; //const session_type = "immersive-vr"; const session_type = "inline"; const mouse_speed = 0.003; xrotationdegreespersecond the number of degrees of rotation to apply around the x axis per second.
... session_type the type of xr session to create: inline for an inline session presented in the context of the document and immersive-vr to present the scene to an immersive vr headset.
... note: this example always displays what it renders on the screen, even if using immersive-vr mode.
...And 2 more matches

ARIA Test Cases - Accessibility
markup used: notes: results: at firefox ie opera safari jaws 9 - - n/a n/a jaws 10 pass in non-v-pc mode, pass in v-pc-mode also if the button's text is not provided via labelledby or label.
... at should indicate that it is a toggle button (not a regular button) markup used: role="button" aria-pressed="false" (or true) notes: results: at firefox ie opera safari jaws 9 - - n/a n/a jaws 10 pass in non-v-pc-mode, button's state is announced when pressed, or when toggling it to pressed.
... markup used: notes: results: at firefox ie opera safari jaws 9 - - n/a n/a jaws 10 pass in non-v-pc-mode.
...And 2 more matches

Web applications and ARIA FAQ - Accessibility
here's the markup for a progress bar widget: <div id="percent-loaded" role="progressbar" aria-valuenow="75" aria-valuemin="0" aria-valuemax="100" /> this progress bar is built using a <div>, which is not very descriptive.
...the aria-valuemin and aria-valuemax attributes specify the minimum and maximum values for the progress bar, and the aria-valuenow describes the current state of it.
...progressbar.setattribute("role", "progressbar"); progressbar.setattribute("aria-valuemin", 0); progressbar.setattribute("aria-valuemax", 100); // create a function that can be called at any time to update the value of the progress bar.
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@import - CSS: Cascading Style Sheets
or> = <media-not> | <media-and> | <media-in-parens>where <media-not> = not <media-in-parens><media-and> = <media-in-parens> [ and <media-in-parens> ]+<media-or> = <media-in-parens> [ or <media-in-parens> ]+<media-in-parens> = ( <media-condition> ) | <media-feature> | <general-enclosed>where <media-feature> = ( [ <mf-plain> | <mf-boolean> | <mf-range> ] )<general-enclosed> = [ <function-token> <any-value> ) ] | ( <ident> <any-value> )where <mf-plain> = <mf-name> : <mf-value><mf-boolean> = <mf-name><mf-range> = <mf-name> [ '<' | '>' ]?
...<mf-value> | <mf-value> [ '<' | '>' ]?
...<mf-name> | <mf-value> '<' '='?
...And 2 more matches

@media - CSS: Cascading Style Sheets
or> = <media-not> | <media-and> | <media-in-parens>where <media-not> = not <media-in-parens><media-and> = <media-in-parens> [ and <media-in-parens> ]+<media-or> = <media-in-parens> [ or <media-in-parens> ]+<media-in-parens> = ( <media-condition> ) | <media-feature> | <general-enclosed>where <media-feature> = ( [ <mf-plain> | <mf-boolean> | <mf-range> ] )<general-enclosed> = [ <function-token> <any-value> ) ] | ( <ident> <any-value> )where <mf-plain> = <mf-name> : <mf-value><mf-boolean> = <mf-name><mf-range> = <mf-name> [ '<' | '>' ]?
...<mf-value> | <mf-value> [ '<' | '>' ]?
...<mf-name> | <mf-value> '<' '='?
...And 2 more matches

Mozilla CSS extensions - CSS: Cascading Style Sheets
tion [prefixed version still accepted] -moz-animation-fill-mode [prefixed version still accepted] -moz-animation-iteration-count [prefixed version still accepted] -moz-animation-name [prefixed version still accepted] -moz-animation-play-state [prefixed version still accepted] -moz-animation-timing-function [prefixed version still accepted] -moz-appearance b -moz-backface-visibility [prefixed version still accepted] -moz-background-clipobsolete since gecko 2 -moz-background-originobsolete since gecko 2 -moz-background-inline-policyobsolete since gecko 32 [superseded by the standard version box-decoration-break] -moz-background-sizeobsolete since gecko 2 -moz-border-end [superseded by the standard version border-inline-end] -moz-border-end-color [supersed...
...oz-win-media-toolbox -moz-window-button-box -moz-window-button-box-maximized -moz-window-button-close -moz-window-button-maximize -moz-window-button-minimize -moz-window-button-restore -moz-window-titlebar -moz-window-titlebar-maximized progressbar progresschunk radio radio-container radio-label radiomenuitem resizer resizerpanel scale-horizontal scalethumb-horizontal scalethumb-vertical scale-vertical scrollbarbutton-down scrollbarbutton-left scrollbarbutton-right scrollbarbutton-up scrollbar-small scrollbarthumb-horizontal scrollbarthumb-vertical scrollbartrack-horizontal scrollbartrack-vertical separator spinner spinner-downbutton spinner-textfield spinner-upbutton statusbar statusbarpanel tab tabpanels tab-scroll-arrow-back tab-scroll-arrow-forward...
... border-style and outline-style -moz-bg-insetobsolete since gecko 1.9 -moz-bg-outsetobsolete since gecko 1.9 -moz-bg-solidobsolete since gecko 1.9 <color> keywords -moz-activehyperlinktext -moz-hyperlinktext -moz-visitedhyperlinktext -moz-buttondefault -moz-buttonhoverface -moz-buttonhovertext -moz-default-background-color -moz-default-color -moz-cellhighlight -moz-cellhighlighttext -moz-field -moz-fieldtext -moz-dialog -moz-dialogtext -moz-dragtargetzone -moz-mac-accentdarkestshadow -moz-mac-accentdarkshadow -moz-mac-accentface -moz-mac-accentlightesthighlight -moz-mac-accentlightshadow -...
...And 2 more matches

Shorthand properties - CSS: Cascading Style Sheets
handling of these cases are grouped in several categories: shorthands handling properties related to edges of a box, like border-style, margin or padding, always use a consistent 1-to-4-value syntax representing those edges: the 1-value syntax: border-width: 1em — the unique value represents all edges the 2-value syntax: border-width: 1em 2em — the first value represents the vertical, that is top and bottom, edges, the second the horizontal ones, that is the left and right ones.
... the 3-value syntax: border-width: 1em 2em 3em — the first value represents the top edge, the second, the horizontal, that is left and right, ones, and the third value the bottom edge the 4-value syntax: border-width: 1em 2em 3em 4em — the four values represent the top, right, bottom and left edges respectively, always in that order, that is clock-wise starting at the top (the initial letter of top-right-bottom-left matches the order of the consonant of the word trouble: trbl) (you can also remember it as the order that the hands would rotate on a clock: 1em starts in the 12 o'clock position, then 2em in the 3 o'clock position, then 3em in the 6 o'clock position, and 4em in the 9 o'clock position).
... similarly, shorthands handling properties related to corners of a box, like border-radius, always use a consistent 1-to-4-value syntax representing those corners: the 1-value syntax: border-radius: 1em — the unique value represents all corners the 2-value syntax: border-radius: 1em 2em — the first value represents the top left and bottom right corner, the second the top right and bottom left ones.
...And 2 more matches

Protocol upgrade mechanism - HTTP
sec-websocket-version request header specifies the websocket protocol version the client wishes to use, so the server can confirm whether or not that version is supported on its end.
... sec-websocket-version: version version the websocket protocol version the client wishes to use when communicating with the server.
... response header if the server can't communicate using the specified version of the websocket protocol, it will respond with an error (such as 426 upgrade required) that includes in its headers a sec-websocket-version header with a comma-separated list of the supported protocol versions.
...And 2 more matches

Content type - SVG: Scalable Vector Graphics
clock-value <clock-value> clock values have the same syntax as in smil animation specification.
... the grammar for clock values is repeated here: clock-val ::= full-clock-val | partial-clock-val | timecount-val full-clock-val ::= hours ":" minutes ":" seconds ("." fraction)?
... partial-clock-val ::= minutes ":" seconds ("." fraction)?
...And 2 more matches

Index - Archive of obsolete content
2159 ::-ms-value css, non-standard, pseudo-element, reference, selector the ::-ms-value css pseudo-element is a microsoft extension that applies rules to the value of a text or password <input> control or the content of a <select> control.
... 2163 -moz-os-version @media, css, non-standard, media feature the -moz-os-version gecko-only css media feature can be used to apply styles based on the user's version of microsoft windows.
... 2214 developing mozilla xforms always start with a debug build of the xforms and the schema-validation extensions.
...this feature is not based on multi-vendor web standards and is not supported in firefox (or other non-ie browsers).

Building Mozilla XForms - Archive of obsolete content
getting started things to know first: the xforms extension has a dependency on the schema-validation extension, so you need to build both (that's done automatically) mozilla switched from cvs to mercurial starting with firefox 3.5.
...the following table gives you an overview of which version you want to build: firefox version gecko/toolkit version source code notes status firefox 2.0 gecko 1.8.1 cvs, branch mozilla_1_8_branch not developed any more last release: 0.8.5ff2 firefox 3.0 gecko 1.9.0 cvs, branch head not developed any more last release: 0.8.5ff3 firefox 3.5 gecko 1.9.1 xforms/schema-validation code does not build with firefox 3.5 any more not supported firefox 3.6 gecko 1.9.2 xforms/schema-validation code does not build with firefox 3.6 any more not developed any more last release: 0.8.6 firefox 4 gecko 2.0 mercurial, repositories mozilla-central xforms schema-validation mostly works upcoming 0.8.7 release if you have your first working firefox build, you can go on w...
...starting with firefox 3.5, you need to do two more mercurial checkouts: cd extensions hg clone http://hg.mozilla.org/xforms hg clone http://hg.mozilla.org/schema-validation that's it, you now have everything you need to get started.
...an old firefox 3.6 release) use this instead (see bug 601570 for details): ac_add_options --enable-extensions="default,xforms,schema-validation" a complete .mozconfig file for a release build might look like that: .

Implementation Status - Archive of obsolete content
artial see section 11.2 for more details 4.3.10 xforms-submit-serialize supported 4.4 notification events supported 4.4.1 xforms-insert supported 4.4.2 xforms-delete supported 4.4.3 xforms-value-changed supported 4.4.4 xforms-valid supported 4.4.5 xforms-invalid supported 4.4.6 xforms-readonly supported 4.4.7 xforms-readwrite supported 4.4.8 xforms-required supp...
...xforms-in-range supported 4.4.17 xforms-out-of-range supported 4.4.18 xforms-scroll-first xforms-scroll-last supported 4.4.19 xforms-submit-done supported 4.5 error indications partial we don't support the xforms-version-exception event, yet 4.5.1 xforms-binding-exception supported 4.5.2 xforms-compute-exception supported 4.5.3 xforms-link-error partial not yet generated by load.
... 333782; 4.5.4 xforms-link-exception supported 4.5.5 xforms-output-exception unsupported 4.5.6 xforms-submit-error supported 4.5.7 xforms-version-exception unsupported 4.6 event sequencing supported 4.6.1 for input, secret, textarea, range, or upload controls supported 4.6.2 for output controls supported 4.6.3 for select or select1 controls partial 4.6.4 for trigger controls supported ...
...xforms and styling section title status notes bugs g.1 pseudo-classes partial :read-only and :read-write are suported using :-moz-read-only and :-moz-read-write 313111; g.2 pseudo-elements unsupported we support ::value, ::repeat-index, and ::repeat-item through the attributes xf-value, xf-repeat-index, and xf-repeat-item.

WAI-ARIA basics - Learn web development
at this point, take a copy of our form-validation.html and validation.js files, and save them in a local directory.
...wai-aria does include aria-valuemin and aria-valuemax properties to specify min and max values, but these currently don't seem very well supported; a better supported feature is the html5 placeholder attribute, which can contain a message that is shown in the input when no value is entered, and is read out by a number of screenreaders.
... update your number input like this: <input type="number" name="age" id="age" placeholder="enter 1 to 150" aria-required="true"> note: you can see the finished example live at form-validation-updated.html.
...for example, in our form-validation-checkbox-disabled.html demo there is a checkbox that when checked, enables another form input to allow further information be entered.

Localizing with Mercurial
open a terminal window and enter hg --version.
... type hg --version in the new shell window.
... open a terminal window and type hg --version.
... your config file should have the following settings: [ui] username = your real name <user@example.com> merge = internal:merge [defaults] commit = -v [diff] git = 1 showfunc = 1 unified = 8 to configure hg, follow these steps: create a new file in your favorite text editor.

NSS tools : modutil
01} files { unix/fort.so { relativepath{%root%/lib/fort.so} absolutepath{/usr/local/netscape/lib/fort.so} filepermissions{555} } xplat/instr.html { relativepath{%root%/docs/inst.html} absolutepath{/usr/local/netscape/docs/inst.html} filepermissions{555} } } } irix:6.2:mips { equivalentplatform { sunos:5.5.1:sparc } } } script grammar the script is basic java, allowing lists, key-value pairs, strings, and combinations of all of them.
...each entry in the list is itself a key-value pair: the key is the name of the platform and the value list contains various attributes of the platform.
...each entry in the file list is a key-value pair.
...this key-value pair is a bitstring specified in hexadecimal (0x) format.

NSS tools : modutil
ort.so} filepermissions{555} } xplat/instr.html { relativepath{%root%/docs/inst.html} absolutepath{/usr/local/netscape/docs/inst.html} filepermissions{555} } } } irix:6.2:mips { equivalentplatform { sunos:5.5.1:sparc } } } script grammar the script is basic java, allowing lists, key-value pairs, strings, and combinations of all of them.
...each entry in the list is itself a key-value pair: the key is the name of the platform and the value list contains various attributes of the platform.
...each entry in the file list is a key-value pair.
...this key-value pair is a bitstring specified in hexadecimal (0x) format.

XPCShell Reference
the command line the command-line syntax for xpcshell is: xpcshell [-s] [-w] [-w] [-v version] [-f scriptfile] [scriptfile] [scriptarg...] -c this option turns on the "compile-only" mode.
... -v version this allows you to specify a specific version of js to use, and should be set to an integral value specified by the jsversion enumerated type.
... for instance, specifying -v 180 will set the interpreter to use javascript version 1.8.
...see the above documentation on the -v command-line argument for more information.

Observer Notifications
xul-window-visible nsiappwindow called just after a xul window is made visible.
... inspector-editor-closed - sent after the attribute-value editor has been closed.
... inspector-editor-opened - sent after the attribute-value editor has been opened and initialized.
... inspector-editor-saved - sent when changes have been saved in the attribute-value editor.

Edit fonts - Firefox Developer Tools
for non-variable fonts the slider ranges from 100 to 900 in increments of 100.
...the css font-variation-settings property uses the tag as part of the key-value pair.
... for example, to set font-weight using font-variation-settings, you could do something like this: font-variation-settings: "wght" 350; however, you should only use font-variation-settings as a last resort if there is no basic font property available for setting those characteristic values (e.g.
... note: font characteristics set using font-variation-settings will always override those set using the corresponding basic font properties, e.g.

ARIA - Accessibility
here's the markup for a progress bar widget: <div id="percent-loaded" role="progressbar" aria-valuenow="75" aria-valuemin="0" aria-valuemax="100"> </div> this progress bar is built using a <div>, which has no meaning.
...the aria-valuemin and aria-valuemax attributes specify the minimum and maximum values for the progress bar, and the aria-valuenow describes the current state of it and therefore must be kept updated with javascript.
...progressbar.setattribute("role", "progressbar"); progressbar.setattribute("aria-valuemin", 0); progressbar.setattribute("aria-valuemax", 100); // create a function that can be called at any time to update // the value of the progress bar.
... function updateprogress(percentcomplete) { progressbar.setattribute("aria-valuenow", percentcomplete); } note that aria was invented after html4, so does not validate in html4 or its xhtml variants.

@supports - CSS: Cascading Style Sheets
the supports condition consists of one or more name-value pairs combined by conjunctions (and), disjunctions (or), and/or negations (not).
...s-condition> { <group-rule-body> }where <supports-condition> = not <supports-in-parens> | <supports-in-parens> [ and <supports-in-parens> ]* | <supports-in-parens> [ or <supports-in-parens> ]*where <supports-in-parens> = ( <supports-condition> ) | <supports-feature> | <general-enclosed>where <supports-feature> = <supports-decl> | <supports-selector-fn><general-enclosed> = [ <function-token> <any-value> ) ] | ( <ident> <any-value> )where <supports-decl> = ( <declaration> )<supports-selector-fn> = selector( <complex-selector> )where <complex-selector> = <compound-selector> [ <combinator>?
...'*'<subclass-selector> = <id-selector> | <class-selector> | <attribute-selector> | <pseudo-class-selector><pseudo-element-selector> = ':' <pseudo-class-selector><pseudo-class-selector> = ':' <ident-token> | ':' <function-token> <any-value> ')'where <wq-name> = <ns-prefix>?
...px)) { … /* css applied when 3d transforms, prefixed or not, are supported */ } testing for the non-support of a specific css property @supports not ((text-align-last: justify) or (-moz-text-align-last: justify)) { … /* css to provide fallback alternative for text-align-last: justify */ } testing for the support of custom properties @supports (--foo: green) { body { color: var(--varname); } } testing for the support of a selector (eg.

Logical properties for margins, borders and padding - CSS: Cascading Style Sheets
padding shorthands as with margin, there are two-value shorthands for padding — padding-inline and padding-block — which allow you to set the padding of the two inline, and two block dimensions, respectively.
... new border shorthands there are two-value shorthands to set the width, style and, color of the block or inline dimension, and two-value shorthands to set all three values in the block or inline dimension.
... .box { border-end-start-radius: 1em; border-end-end-radius: 0; border-start-end-radius: 20px; border-start-start-radius: 40px; } indicating logical values for the 4-value shorthand syntax the specification makes a suggestion for the four-value shorthands such as the margin property, however the final decision on how this should be indicated is as yet unresolved, and is discussed in this issue.
... using any four-value shorthand such as margin, padding, or border will currently use the physical versions, so if following the flow of the document is important, use the longhand properties for the time being.

display - CSS: Cascading Style Sheets
note: in browsers that support the two-value syntax, if no inner value is specified it will default to flow.
... .container { display: inline-flex; } for more information on these changes to the specification, see the article adapting to the new two-value syntax of display.
... adapting to the new two-value syntax of display css flow layout (display: block, display: inline) block and inline layout in normal flow flow layout and overflow flow layout and writing modes formatting contexts explained in flow and out of flow display: flex basic concepts of flexbox aligning items in a flex container controlling ratios of flex items along the main axis cross-browser flexbox mixins mastering wrapping of...
... note: we've not included any of the modern two-value syntax, as support for that is still fairly limited.

transform-origin - CSS: Cascading Style Sheets
syntax /* one-value syntax */ transform-origin: 2px; transform-origin: bottom; /* x-offset | y-offset */ transform-origin: 3cm 2px; /* x-offset-keyword | y-offset */ transform-origin: left 2px; /* x-offset-keyword | y-offset-keyword */ transform-origin: right top; /* y-offset-keyword | x-offset-keyword */ transform-origin: top right; /* x-offset | y-offset | z-offset */ transform-origin: 2px 30% 10px; /* x...
... one-value syntax: the value must be a <length>, a <percentage>, or one of the keywords left, center, right, top, and bottom.
... two-value syntax: one value must be a <length>, a <percentage>, or one of the keywords left, center, and right.
... three-value syntax: the first two values are the same as for the two-value syntax.

DASH Adaptive Streaming for HTML 5 Video - HTML: Hypertext Markup Language
for example: the file in.video can be any container with at least one audio and one video stream that can be decoded by ffmpeg, create the audio using: ffmpeg -i in.video -vn -acodec libvorbis -ab 128k -dash 1 my_audio.webm create each video variant.
... ffmpeg -i in.video -c:v libvpx-vp9 -keyint_min 150 -g 150 -tile-columns 4 -frame-parallel 1 -f webm -dash 1 \ -an -vf scale=160:90 -b:v 250k -dash 1 video_160x90_250k.webm ffmpeg -i in.video -c:v libvpx-vp9 -keyint_min 150 -g 150 -tile-columns 4 -frame-parallel 1 -f webm -dash 1 \ -an -vf scale=320:180 -b:v 500k -dash 1 video_320x180_500k.webm ffmpeg -i in.video -c:v libvpx-vp9 -keyint_min 150 -g 150 -tile-columns 4 -frame-parallel 1 -f webm -dash 1 \ -an -vf scale=640:360 -b:v 750k -dash 1 video_640x360_750k.webm ffmpeg -i in.video -c:v libvpx-vp9 -keyint_min 150 -g 150 -tile-columns 4 -frame-parallel 1 -f webm -dash 1 \ -an -vf scale=640:360 -b:v 1000k -dash 1 video_640x360_1000k.webm ffmpeg -i in.video -c:v libvpx-vp9 -keyint_min 150 -g 150 -tile-columns 4 -frame-parallel 1 -f ...
...webm -dash 1 \ -an -vf scale=1280:720 -b:v 1500k -dash 1 video_1280x720_1500k.webm or do it in all in one command.
... ffmpeg -i in.video -c:v libvpx-vp9 -keyint_min 150 \ -g 150 -tile-columns 4 -frame-parallel 1 -f webm -dash 1 \ -an -vf scale=160:90 -b:v 250k -dash 1 video_160x90_250k.webm \ -an -vf scale=320:180 -b:v 500k -dash 1 video_320x180_500k.webm \ -an -vf scale=640:360 -b:v 750k -dash 1 video_640x360_750k.webm \ -an -vf scale=640:360 -b:v 1000k -dash 1 video_640x360_1000k.webm \ -an -vf scale=1280:720 -b:v 1500k -dash 1 video_1280x720_1500k.webm 2.

<dl>: The Description List element - HTML: Hypertext Markup Language
common uses for this element are to implement a glossary or to display metadata (a list of key-value pairs).
... content categories flow content, and if the <dl> element's children include one name-value group, palpable content.
... metadata description lists are useful for displaying metadata as a list of key-value pairs.
... <dl> <dt>name</dt> <dd>godzilla</dd> <dt>born</dt> <dd>1952</dd> <dt>birthplace</dt> <dd>japan</dd> <dt>color</dt> <dd>green</dd> </dl> tip: it can be handy to define a key-value separator in the css, such as: dt::after { content: ": "; } wrapping name-value groups in <div> elements whatwg html allows wrapping each name-value group in a <dl> element in a <div> element.

<input type="range"> - HTML: Hypertext Markup Language
in the meantime, we can make the range vertical by rotating it using using css transforms, or, by targeting each browser engine with their own method, which includes setting the appearance to slider-vertical, by using a non-standard orient attribute in firefox, or by changing the text direction for internet explorer and edge.
... screenshotlive sample appearance property the appearance property has a non-standard value of slider-vertical that, well, makes sliders vertical.
... html we use the same html as in the previous examples: <input type="range" min="0" max="11" value="7" step="1"> css we target just the inputs with a type of range: input[type="range"] { -webkit-appearance: slider-vertical; } orient attribute in firefox only, there is a non-standard orient property.
... example to make it work cross browser: html we keep the orient attribute with a value of vertical for firefox: <input type="range" min="0" max="11" value="7" step="1" orient="vertical"> css we target just the inputs with a type of range, changing the writing mode from the default to bt-lr, or bottom-to-top and left-to-right, for edge and internet explorer, and add -webkit-appearance: slider-vertical for all -webkit-based browsers: input[type="range"] { writing-mode: bt-lr; -webkit-appearance: slider-vertical; } specifications specification status comment html living standardthe definition of '<input type="range">' in that specification.

Equality comparisons and sameness - JavaScript
same-value equality same-value equality addresses a final use case: determining whether two values are functionally identical in all contexts.
...internally, when an immutable property is redefined, the newly-specified value is compared against the current value using same-value equality.
... same-value equality is provided by the object.is method.
... same-value-zero equality similar to same-value equality, but +0 and -0 are considered equal.

ui/button/action - Archive of obsolete content
you can specify this in one of three ways: as a resource:// url pointing at an icon file in your add-on's "data" directory, typically constructed using self.data.url(iconfile) as a relative path: a string in the form "./iconfile", where "iconfile" is a relative path to the icon file beginning in your add-on's "data" directory as an object, or dictionary of key-value pairs.
...each key-value pair specifies an icon: each value specifies an image file as a resource:// url or relative path.
... icon the button's icon or icons, as a url, relative path, or object containing a set of key-value pairs.

ui/button/toggle - Archive of obsolete content
you can specify this in one of three ways: as a resource:// url pointing at an icon file in your add-on's "data" directory, typically constructed using self.data.url(iconfile) as a relative path: a string in the form "./iconfile", where "iconfile" is a relative path to the icon file beginning in your add-on's "data" directory as an object, or dictionary of key-value pairs.
...each key-value pair specifies an icon: each value specifies an image file as a resource:// url or relative path.
... icon the button's icon or icons, as a url, relative path, or object containing a set of key-value pairs.

jpm-mobile - Archive of obsolete content
jpm usage is: jpm-mobile [command] [options] jpm supports the following global options: -h, --help - show a help message and exit -v, --version - print the jpm version number installation jpm-mobile is distributed using the node package manager npm, so to get jpm-mobile you need to have npm installed, if you haven't already.
... $ adb shell pm list packages | grep org.mozilla package:org.mozilla.firefox $ jpm-mobile run -b firefox # the package name is firefox -v --verbose verbose operation.
... $ adb shell pm list packages | grep org.mozilla package:org.mozilla.firefox $ jpm-mobile run -b firefox # the package name is firefox -v --verbose verbose operation.

Running Tamarin acceptance tests - Archive of obsolete content
can also be using in conjunction with --threads -f --forcerebuild force rebuild all test files -q --quiet : will print a period (.) for each test run regardless of results, then print the test run summary when finished --ascargs= : additional arguments to pass to asc.jar --vmargs= : additional arguments to pass to avmshell --random : run tests in random order --timeout : max time for testrun --verify : run a verify pass instead of running abcs --verifyonly : run a -dverifyonly pass: only checks test exitcode (only works with debugger vms) testing the android shell the instructions above apply to running tests on an android device as well, but with a few differences...
...the /android-public/android-vars.sh script has commented-out examples of the environment settings for running tests on the android avm shell.
...if you've correctly edited and run the android-vars.sh script mentioned on the tamarin build documentation page you should already be pathed to the adb executable in the public sdk/ndk, but if not it exists at /android-public/android-sdk-mac_86/platform-tools.

Menus - Archive of obsolete content
ew window links context-openlinkintab opens a link in a new tab links context-bookmarklink bookmarks a link links context-savelink saves a link links context-sendlink sends a link in an email links context-copyemail copies an email address mailto: links context-copylink copies a link links context-viewimage views an image at full size images context-copyimage-contents copies an image to the clipboard images context-copyimage copies the url of an image to the clipboard images context-saveimage saves an image images context-sendimage sends an image in an email images context-setdesktopbackground sets an image as the ...
... a page context-forward goes forward a page context-reload reloads a page context-stop stops loading a page context-bookmarkpage bookmarks a page context-savepage saves a page context-sendpagetodevice send page to device context-sendpage send page in an email context-viewbgimage views a background image context-undo undo editable text context-cut cuts to clipboard editable text context-copy copies to clipboard context-paste pastes from clipboard editable text context-delete deletes selection editable text context-selectall selects all context-searchsel...
...ect selected text is searched context-viewpartialsource-selection views the selection source selection context-viewpartialsource-mathml views the mathml source mathml context-viewsource views the source context-viewinfo views the page info context-metadata views the properties context-spell-check-enabled spell check enabled checkbox context-inspect inspects the element ...

Providing Command-Line Options - Archive of obsolete content
firefox.exe -viewapp url opens a chrome window for my application and passes it an nsiuri object.
...iewapp" to your command line flag that takes an argument var uristr = cmdline.handleflagwithparam("viewapp", false); if (uristr) { // convert uristr to an nsiuri var uri = cmdline.resolveuri(uristr); openwindow(chrome_uri, uri); cmdline.preventdefault = true; } } catch (e) { components.utils.reporterror("incorrect parameter passed to -viewapp on the command line."); } // changeme: change "myapp" to your command line flag (no argument) if (cmdline.handleflag("myapp", false)) { openwindow(chrome_uri, null); cmdline.preventdefault = true; } }, // changeme: change the help info as appropriate, but // follow the guidelines in nsicommandlinehandler.idl // specifically, flag descriptions should sta...
...rt at // character 24, and lines should be wrapped at // 72 characters with embedded newlines, // and finally, the string should end with a newline helpinfo : " -myapp open my application\n" + " -viewapp <uri> view and edit the uri in my application,\n" + " wrapping this description\n" }; var nsgetfactory = xpcomutils.generatensgetfactory([commandlinehandler]); ...

calICalendarView - Archive of obsolete content
for instance, when the showdate method of the the calendar-multiday-view (an implementation of this interface) will sometimes show an entire week of dates, and sometimes show only the single date passed in.
...(for instance, calendar-month-view will show all dates from the start of the week of astartdate to the end of the week of aenddate.) setdatelist void setdatelist(in unsigned long acount, [array,size_is(acount)] in calidatetime adates); this function can only be called if supportsdisjointdates is true and will throw an error if it is not.
... related interfaces calicalendarviewcontroller calidecoratedview example code both calendar-multiday-view and calendar-month-view show examples, albeit complex, of implementations of this interface.

GLSL Shaders - Game development
<!doctype html> <html> <head> <meta charset="utf-8"> <title>mdn games: shaders demo</title> <style> body { margin: 0; padding: 0; font-size: 0; } canvas { width: 100%; height: 100%; } </style> <script src="three.min.js"></script> </head> <body> <script id="vertexshader" type="x-shader/x-vertex"> // vertex shader's code goes here </script> <script id="fragmentshader" type="x-shader/x-fragment"> // fragment shader's code goes here </script> <script> // scene setup goes here </script> </body> </html> it contains some basic information like the document <title>, and some css to set the width and height of the <canvas> element that three.js will insert on the page to be ...
... the vertex shader code let's continue by writing a simple vertex shader — add the code below inside the body's first <script> tag: void main() { gl_position = projectionmatrix * modelviewmatrix * vec4(position.x+10.0, position.y, position.z+5.0, 1.0); } the resulting gl_position is calculated by multiplying the model-view and the projection matrices by each vector to get the final vertex position, in each case.
... final code html <script src="https://end3r.github.io/mdn-games-3d/shaders/js/three.min.js"></script> <script id="vertexshader" type="x-shader/x-vertex"> void main() { gl_position = projectionmatrix * modelviewmatrix * vec4(position.x+10.0, position.y, position.z+5.0, 1.0); } </script> <script id="fragmentshader" type="x-shader/x-fragment"> void main() { gl_fragcolor = vec4(0.0, 0.58, 0.86, 1.0); } </script> javascript var width = window.innerwidth; var height = window.innerheight; var rendere...

Introduction to events - Learn web development
the output is as follows: note: for the full source code, see preventdefault-validation.html (also see it running live here.) event bubbling and capture the final subject to cover here is something that you won't come across often, but it can be a real pain if you don't understand it.
...let's look at an example to make this easier — open up the show-video-box.html example in a new tab (and the source code in another tab.) it is also available live below: this is a pretty simple example that shows and hides a <div> with a <video> element inside it: <button>display video</button> <div class="hidden"> <video> <source src="rabbit320.mp4" type="video/mp4"> <source src="rabbit320.webm" type="video/webm"> <p>your browser doesn't support html5 video.
... we can, therefore, fix our current problem by changing the second handler function in the previous code block to this: video.onclick = function(e) { e.stoppropagation(); video.play(); }; you can try making a local copy of the show-video-box.html source code and fixing it yourself, or looking at the fixed result in show-video-box-fixed.html (also see the source code here).

Creating our first Vue component - Learn web development
note: if you need to check your code against our version, you can find a finished version of the sample vue app code in our todo-vue repository.
... for a running live version, see https://mdn.github.io/todo-vue/dist/.
... in your moz-todo-vue/src/components directory, create a new file named todoitem.vue.

Focus management with Vue refs - Learn web development
this can be disorienting for keyboard and non-visual users.
... note: if you need to check your code against our version, you can find a finished version of the sample vue app code in our todo-vue repository.
... for a running live version, see https://mdn.github.io/todo-vue/dist/.

Introducing a complete toolchain - Learn web development
you can check whether you've already got it installed globally using the following command: prettier -v if installed, you'll get a version number returned like 2.0.2; if not, it'll return something along the lines of "command not found".
...here is an example eslint output: ./my-project/src/index.js 2:8 error 'react' is defined but never used no-unused-vars 22:20 error 'body' is defined but never used no-unused-vars 96:19 error 'b' is defined but never used no-unused-vars ✖ 3 problems (3 errors, 0 warnings) note: we'll install eslint in the next section; don't worry about this for now.
... look like this — add in the bolded parts and save it: { "env": { "es6": true, "browser": true }, "extends": ["eslint:recommended", "plugin:react/recommended"], "parseroptions": { "ecmaversion": 6, "sourcetype": "module", "ecmafeatures": { "jsx": true } }, "plugins": ["react"], "rules": { "semi": "error", "no-console": 0, "react/jsx-uses-vars": "error" } } as the configuration now uses a plugin called "react", this development dependency also needs to be installed, so that the code is there to actually run that part of the linting process.

Command line options
that is different to venkman debugger (see option -venkman).
... -venkman start with the javascript debugger, venkman, if installed.
... -v or -version print application version.

Obsolete Build Caveats and Tips
gecko 1.9.2 through 11: if you would like to use this sdk, add ac_add_options --with-windows-version=600 to your .mozconfig.
... gecko 1.9.2 through 11: if you're building with this sdk, you will need to add ac_add_options --with-windows-version=502 to your .mozconfig.
... for mozilla-1.9.1 and mozilla-1.9.0, you need to add ac_add_options --disable-vista-sdk-requirements to your .mozconfig instead.

Experimental features in Firefox
nightly 75 no developer edition 75 no beta 75 no release 75 no preference name layout.css.conic-gradient.enabled and gfx.webrender.all pseudo-class: :focus-visible allows focus styles to be applied to elements like buttons and form controls, only when they are focused using the keyboard (e.g.
... nightly 75 no developer edition 75 no beta 75 no release 75 no preference name layout.css.focus-visible.enabled single numbers as aspect ratio in media queries support for using a single <number> as a <ratio> when specifying the aspect ratio for a media query.
... nightly 77 no developer edition 77 no beta 77 no release 77 no preference name layout.css.grid-template-masonry-value.enabled media feature: prefers-contrast the prefers-contrast media feature is used to detect whether the user has specified a preference for higher (or lower) contrast in the presentation of web content.

NSS tools : pk12util
nss tools : pk12util name pk12util — export and import keys and certificate to or from a pkcs #12 file and the nss database synopsis pk12util [-i p12file|-l p12file|-o p12file] [-d [sql:]directory] [-h tokenname] [-p dbprefix] [-r] [-v] [-k slotpasswordfile|-k slotpassword] [-w p12filepasswordfile|-w p12filepassword] description the pkcs #12 utility, pk12util, enables sharing certificates among any server that supports pkcs#12.
... -v enable debug logging when importing.
... pk12util -i p12file [-h tokenname] [-v] [-d [sql:]directory] [-p dbprefix] [-k slotpasswordfile|-k slotpassword] [-w p12filepasswordfile|-w p12filepassword] for example: # pk12util -i /tmp/cert-files/users.p12 -d sql:/home/my/sharednssdb enter a password which will be used to encrypt your keys.

NSS Tools modutil
each entry in the list is itself a key-value pair: the key is the name of the platform and the value list contains various attributes of the platform.
...each entry in the file list is a key-value pair: the key is the path of the file in the jar archive, and the value list contains attributes of the file.
...this key-value pair is a bitstring specified in hexadecimal (0x) format.

NSS tools : pk12util
name pk12util — export and import keys and certificate to or from a pkcs #12 file and the nss database synopsis pk12util [-i p12file [-h tokenname] [-v] [common-options] ] [ -l p12file [-h tokenname] [-r] [common-options] ] [ -o p12file -n certname [-c keycipher] [-c certcipher] [-m|--key_len keylen] [-n|--cert_key_len certkeylen] [common-options] ] [ common-options are: [-d [sql:]directory] [-p dbprefix] [-k slotpasswordfile|-k slotpassword] [-w p12filepasswordfile|-w p12filepassword] ] description the pkcs #12 utility, pk12util, enables sharing certificates among any server that supports pkcs#12.
... -v enable debug logging when importing.
... pk12util -i p12file [-h tokenname] [-v] [-d [sql:]directory] [-p dbprefix] [-k slotpasswordfile|-k slotpassword] [-w p12filepasswordfile|-w p12filepassword] for example: # pk12util -i /tmp/cert-files/users.p12 -d sql:/home/my/sharednssdb enter a password which will be used to encrypt your keys.

Property cache
the hash table entries are key-value pairs.
...(the existence of this property is guaranteed by the basic layout guarantee above.) (informally: two objects with the same shape have the same method properties.) branded object guarantee — if at time t0 the object x has shape s; and x is branded (x->branded()); and x has an own property p, which is a writable, function-valued data property with the stub getter and setter and a slot; and at time t1 an object y has shape s; and no shape-regenerating gc occurred; then y is x, and at time t1 x's own property p has the same function value it had at time t0.
...the "branded scope guarantee" documented above ensures that any changes to function-valued own properties of that object will bump its shape, conservatively invalidating all property cache entries of this type for that object (and jit code that might inline a call to the function).

nsIHttpServer
if it doesn't * match the field-value production in rfc 2616 * @note * no syntax checking is done of the given type, beyond ensuring that it is * a valid header field value.
... */ void setsharedstate(in astring key, in astring value); /** * retrieves the object associated with the given key in this in * object-valued saved state.
... */ nsisupports getobjectstate(in astring key); /** * sets the object associated with the given key in this in object-valued * saved state.

ContentIndex.add() - Web APIs
used in user-visible lists of content.
...used in user-visible lists of content.
...used in user-visible lists of content.

ContentIndex.getAll() - Web APIs
used in user-visible lists of content.
...used in user-visible lists of content.
...used in user-visible lists of content.

Basic concepts - Web APIs
so keep the following important concepts in mind: indexeddb databases store key-value pairs.
...the object store persistently holds records, which are key-value pairs.
...the index is a persistent key-value storage where the value part of its records is the key part of a record in the referenced object store.

Using IndexedDB - Web APIs
<input type="button" id="clear-store-button" value="clear the whole store" class="destructive" /> </div> </form> <form id="search-form"> <div class="button-pane"> <input type="button" id="search-list-button" value="list database content" /> </div> </form> <div> <div id="pub-msg"> </div> <div id="pub-viewer"> </div> <ul id="pub-list"> </ul> </div> css content body { font-size: 0.8em; font-family: sans-serif; } form { background-color: #cccccc; border-radius: 0.3em; display: inline-block; margin-bottom: 0.5em; padding: 1em; } table { border-collapse: collapse; } input { padding: 0.3em; border-color: #cccccc; border-radius: 0.3em; } .required:aft...
...er { content: "*"; color: red; } .button-pane { margin-top: 1em; } #pub-viewer { float: right; width: 48%; height: 20em; border: solid #d092ff 0.1em; } #pub-viewer iframe { width: 100%; height: 100%; } #pub-list { width: 46%; background-color: #eeeeee; border-radius: 0.3em; } #pub-list li { padding-top: 0.5em; padding-bottom: 0.5em; padding-right: 0.5em; } #msg { margin-bottom: 1em; } .action-success { padding: 0.5em; color: #00d21e; background-color: #eeeeee; border-radius: 0.2em; } .action-failure { padding: 0.5em; color: #ff1408; background-color: #eeeeee; border-radius: 0.2em; } .note { font-size: smaller; } .destructive { background-color: orange; } .destructive:hover { background-color: #ff8000; } .destructive:active { bac...
...} else { list_item.append(" / no attached file"); } pub_list.append(list_item); }; // move on to the next object in store cursor.continue(); // this counter serves only to create distinct ids i++; } else { console.log("no more entries"); } }; } function newviewerframe() { var viewer = $('#pub-viewer'); viewer.empty(); var iframe = $('<iframe />'); viewer.append(iframe); return iframe; } function setinviewer(key) { console.log("setinviewer:", arguments); key = number(key); if (key == current_view_pub_key) return; current_view_pub_key = key; var store = getobjectstore(db_store_name, 'readonly'); getblob(key, store, function(blob) { ...

MediaQueryList.media - Web APIs
javascript let mql = window.matchmedia('(max-width: 600px)'); document.queryselector(".mq-value").innertext = mql.media; the javascript code simply passes the media query to match into matchmedia() to compile it, then sets the <span>'s innertext to the value of the result's media property.
... html <span class="mq-value"></span> a simple <span> to receive the output.
... css .mq-value { font: 18px arial, sans-serif; font-weight: bold; color: #88f; padding: 0.4em; border: 1px solid #dde; } result specifications specification status comment css object model (cssom) view modulethe definition of 'media' in that specification.

PublicKeyCredential.isUserVerifyingPlatformAuthenticatorAvailable() - Web APIs
isuserverifyingplatformauthenticatoravailable() is a static method of the publickeycredential interface that returns a promise which resolves to true if a user-verifying platform authenticator is available.
... a user-verifying platform authenticator is a kind of multi-factor authenticator that is part of the client device (it is generally not removable) and that involves an action from the user in order to identify them.
... return value a promise which resolves to a boolean indicating whether or a not a user-verifying platform authenticator is available.

WebGLRenderingContext.makeXRCompatible() - Web APIs
the second button will be used to start the game in immersive-vr mode.
... showsimplemessagebox("you don't appear to have a compatible xr headset available.", "cancel"); break; default: handlefatalerror(err); break; } xrsession.end(); } } async function handlestartbuttonclick(event) { if (event.target.classlist.contains("use-webxr") && navigator.xr) { try { xrsession = await navigator.xr.requestsession("immersive-vr"); usingxr = true; } catch(err) { xrsession = null; usingxr = false; } } startgame(); } function startgame() { currentscene = "scene1"; loadsceneresources(currentscene); /* and so on */ } this works by having two buttons, one which starts the game normally and the other which starts the game in vr mode.
...the function determines that the button clicked was the one requesting immersive-vr mode by checking to see if the button has the use-webxr class on it.

Writing WebSocket servers - Web APIs
the client will send a pretty standard http request with headers that looks like this (the http version must be 1.1 or greater, and the method must be get): get /chat http/1.1 host: example.com:8000 upgrade: websocket connection: upgrade sec-websocket-key: dghlihnhbxbszsbub25jzq== sec-websocket-version: 13 the client can solicit extensions and/or subprotocols here; see miscellaneous for details.
...if the server doesn't understand that version of websockets, it should send a sec-websocket-version header back that contains the version(s) it does understand.
... format each data frame (from the client to the server or vice-versa) follows this same format: frame format: ​​ 0 1 2 3 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 +-+-+-+-+-------+-+-------------+-------------------------------+ |f|r|r|r| opcode|m| payload len | extended payload length | |i|s|s|s| (4) |a| (7) | (16/64) ...

WebXR permissions and security - Web APIs
these mostly revolve around the fully-immersive immersive-vr session mode, but there are things to be aware of when setting up an ar session, as well.
... immersive presentation of vr first, any requests to activate the immersive-vr mode are rejected if the domain issuing the request does not have permission to enable an immersive session.
... once that check is passed, the request to enter immersive-vr mode is allowed if all of the following are true: the requestsession() call was issued by code executing within the handler for a user event, or the from the startup code for a user-launched web application.

Spaces and reference spaces: Spatial tracking in WebXR - Web APIs
the first is described above: applying a reference space to an offset (or vice-versa, since the result is the same) to determine the transform matrix that represents the resulting location in the space's coordinate system.
... converting between webxr session types another common reason you may need to convert positional information from one reference space to another is when it's necessary to change the session type from inline to immersive-vr or back.
... let viewerpose = frame.getviewerpose(worldreferencespace); let newsession = navigator.xr.requestsession("immersive-vr", { requiredfeatures: "unbounded" }); worldreferencespace = await newsession.requestreferencespace("unbounded"); viewerpose = worldreferencespace.getoffsetreferencespace(viewerpose.transform); here, the viewer pose is obtained, with its transform defined relative to worldreferencespace, the current session's global reference space.

Window.matchMedia() - Web APIs
javascript let mql = window.matchmedia('(max-width: 600px)'); document.queryselector(".mq-value").innertext = mql.matches; the javascript code simply passes the media query to match into matchmedia() to compile it, then sets the <span>'s innertext to the value of the results' matches property, so that it indicates whether or not the document matches the media query at the moment the page was loaded.
... html <span class="mq-value"></span> a simple <span> to receive the output.
... css .mq-value { font: 18px arial, sans-serif; font-weight: bold; color: #88f; padding: 0.4em; border: 1px solid #dde; } result see testing media queries programmatically for additional code examples.

XRPermissionDescriptor.mode - Web APIs
the mode property of the xrpermissiondescriptor dictionary is a string taken from the xrsessionmode enumerated type, specifying which web xr session mode (inline, immersive-vr, or immersive-ar) the described permissions will be used for.
... immersive-vr indicates that the rendered session will be displayed using an immersive xr device in vr mode; it is not intended to be overlaid or integrated into the surrounding environment.
... let xrpermissiondesc = { name: "xr", mode: "immersive-vr" }; if (navigator.permissions) { navigator.permissions.query(xrpermissiondesc).then(({state}) => { switch(state) { case "granted": setupxr(); break; case "prompt": promptandsetupxr(); break; default: /* do nothing otherwise */ break; } .catch(err) { console.log(err); } } else { setupxr(); } specifications ...

XRPermissionDescriptor - Web APIs
mode an xrsessionmode value indicating the xr mode (inline, immersive-vr, or immersive-ar) for which the permissions are requested.
... examples the example below demonstrates performing the permission request for an application that requires the local-floor reference space in an immersive-vr environment.
... let xrpermissiondesc = { name: "xr", mode: "immersive-vr", requiredfeatures: [ "local-floor" ] }; if (navigator.permissions) { navigator.permissions.query(xrpermissiondesc).then(({state}) => { switch(state) { case "granted": setupxr(); break; case "prompt": promptandsetupxr(); break; default: /* do nothing otherwise */ break; } .catch(err) { console.log(err); } } else ...

XRSystem: isSessionSupported() - Web APIs
this string must be one of inline (to present the webxr content inline within the context of an html document) or immersive-vr for a fully-immersive virtual experience.
... examples in this example, we see issessionsupported() used to detect whether or not the device supports vr mode by checking to see if an immersive-vr session is supported.
... if (navigator.xr) { navigator.xr.issessionsupported('immersive-vr') .then((issupported) => { if (issupported) { userbutton.addeventlistener('click', onbuttonclicked); userbutton.innerhtml = 'enter xr'; userbutton.disabled = false; } }); } function onbuttonclicked() { if (!xrsession) { navigator.xr.requestsession('immersive-vr') .then((session) => { xrsession = session; // onsessionstarted() not shown for rea...

::-webkit-progress-bar - CSS: Cascading Style Sheets
normally it's only visible as the unfilled portion of the bar, since by default it's rendered below the ::-webkit-progress-value pseudo-element.
... it is a child of the ::-webkit-progress-inner-element pseudo-element and the parent of the ::-webkit-progress-value pseudo-element.
... note: for ::-webkit-progress-value to take effect, appearance needs to be set to none on the <progress> element.

@font-face - CSS: Cascading Style Sheets
since firefox 61 (and in other modern browsers) this also accepts two values to specify a range that is supported by a font-face, for example font-weight: 100 400; font-variant a font-variant value.
... font-variation-settings allows low-level control over opentype or truetype font variations, by specifying the four letter axis names of the features to vary, along with their variation values.
...for example, the following will not work: .classname { @font-face { font-family: myhelvetica; src: local("helvetica neue bold"), local("helveticaneue-bold"), url(mgopenmodernabold.ttf); font-weight: bold; } } formal syntax @font-face { [ font-family: <family-name>; ] | [ src: <src>; ] | [ unicode-range: <unicode-range>; ] | [ font-variant: <font-variant>; ] | [ font-feature-settings: <font-feature-settings>; ] | [ font-variation-settings: <font-variation-settings>; ] | [ font-stretch: <font-stretch>; ] | [ font-weight: <font-weight>; ] | [ font-style: <font-style>; ] }where <family-name> = <string> | <custom-ident>+ examples specifying a downloadable font this example simply specifies a downloadable font to use,...

Color picker tool - CSS: Cascading Style Sheets
id #ddd; background-color: #fff; display: table; -moz-user-select: none; -webkit-user-select: none; -ms-user-select: none; user-select: none; } .ui-color-picker .picking-area { width: 198px; height: 198px; margin: 5px; border: 1px solid #ddd; position: relative; float: left; display: table; } .ui-color-picker .picking-area:hover { cursor: default; } /* hsv format - hue-saturation-value(brightness) */ .ui-color-picker .picking-area { background: url('https://mdn.mozillademos.org/files/5707/picker_mask_200.png') center center; background: -moz-linear-gradient(bottom, #000 0%, rgba(0, 0, 0, 0) 100%), -moz-linear-gradient(left, #fff 0%, rgba(255, 255, 255, 0) 100%); background: -webkit-linear-gradient(bottom, #000 0%, rgba(0, 0, 0, 0) 100%), -webkit-linear-gradient(...
...e.clientx - startx) / obj.sensivity | 0; var value = delta * obj.step + start_value; setvalue(obj.topic, value); }; return slider; }; var inputslider = function(node) { var min = parsefloat(node.getattribute('data-min')); var max = parsefloat(node.getattribute('data-max')); var step = parsefloat(node.getattribute('data-step')); var value = parsefloat(node.getattribute('data-value')); var topic = node.getattribute('data-topic'); var unit = node.getattribute('data-unit'); var name = node.getattribute('data-info'); var sensivity = node.getattribute('data-sensivity') | 0; var precision = node.getattribute('data-precision') | 0; this.min = isnan(min) ?
...value = this.value.tofixed(this.precision) + this.unit; }; var setvalue = function setvalue(topic, value, send_notify) { var slider = sliders[topic]; if (slider === undefined) return; value = parsefloat(value.tofixed(slider.precision)); if (value > slider.max) value = slider.max; if (value < slider.min) value = slider.min; slider.value = value; slider.node.setattribute('data-value', value); slider.setinputvalue(); if (send_notify === false) return; notify.call(slider); }; var setmax = function setmax(topic, value) { var slider = sliders[topic]; if (slider === undefined) return; slider.max = value; setvalue(topic, slider.value); }; var setmin = function setmin(topic, value) { var slider = sliders[topic]; if (slider === undefined) ret...

CSS Fonts - CSS: Cascading Style Sheets
p { width: 600px; margin: 0 auto; font-family: "helvetica neue", "arial", sans-serif; font-style: italic; font-weight: 100; font-variant-ligatures: normal; font-size: 2rem; letter-spacing: 1px; } <p>three hundred years ago<br> i thought i might get some sleep<br> i stretched myself out onna antique bed<br> an' my spirit did a midnite creep</p> the result is as follows: variable fonts examples you can find a number of variable fonts examples at v-fonts.com and axis-praxis.org; see also our variable fonts guide...
... reference properties font font-family font-feature-settings font-kerning font-language-override font-optical-sizing font-size font-size-adjust font-stretch font-style font-synthesis font-variant font-variant-alternates font-variant-caps font-variant-east-asian font-variant-ligatures font-variant-numeric font-variant-position font-variation-settings font-weight line-height at-rules @font-face font-family font-feature-settings font-style font-variant font-weight font-stretch src unicode-range @font-feature-values guides fundamental text and font styling in this beginner's learning article we go through all the basic fundamentals of text/font styling in detail, including setting font ...
... specifications specification status comment css fonts module level 4 working draft adds font-variation-settings (and related higher-level properties) and font-optical-sizing.

CSS reference - CSS: Cascading Style Sheets
--webkit-line-clampa:activeadditive-symbols (@counter-style)::after (:after)align-contentalign-itemsalign-selfall<an-plus-b><angle><angle-percentage>animationanimation-delayanimation-directionanimation-durationanimation-fill-modeanimation-iteration-countanimation-nameanimation-play-stateanimation-timing-function@annotationannotation()attr()b::backdropbackdrop-filterbackface-visibilitybackgroundbackground-attachmentbackground-blend-modebackground-clipbackground-colorbackground-imagebackground-originbackground-positionbackground-repeatbackground-size<basic-shape>::before (:before)bleed (@page)<blend-mode>block-sizeblur()borderborder-blockborder-block-colorborder-block-endborder-block-end-colorborder-block-end-styleborder-block-end-widthborder-block-startborder-block-sta...
...er-rightborder-right-colorborder-right-styleborder-right-widthborder-spacingborder-start-end-radiusborder-start-start-radiusborder-styleborder-topborder-top-colorborder-top-left-radiusborder-top-right-radiusborder-top-styleborder-top-widthborder-widthbottom@bottom-centerbox-decoration-breakbox-shadowbox-sizingbreak-afterbreak-beforebreak-insidebrightness()ccalc()caption-sidecaret-colorch@character-variantcharacter-variant()@charset:checkedcircle()clamp()clearclipclip-pathcm<color>colorcolor-adjustcolumn-countcolumn-fillcolumn-gapcolumn-rulecolumn-rule-colorcolumn-rule-stylecolumn-rule-widthcolumn-spancolumn-widthcolumnsconic-gradient()containcontentcontrast()<counter>counter-incrementcounter-resetcounter-set@counter-stylecounters()cross-fade()cubic-bezier()::cue::cue-regioncursor<custom-iden...
...ement()ellipse()em:emptyempty-cells:enabledenv()exffallback (@counter-style)filter<filter-function>:first:first-child::first-letter (:first-letter)::first-line (:first-line):first-of-typefit-content()<flex>flexflex-basisflex-directionflex-flowflex-growflex-shrinkflex-wrapfloat:focusfont@font-facefont-familyfont-family (@font-face)font-feature-settingsfont-feature-settings (@font-face)@font-feature-valuesfont-kerningfont-language-overridefont-optical-sizingfont-sizefont-size-adjustfont-stretchfont-stretch (@font-face)font-stylefont-style (@font-face)font-synthesisfont-variantfont-variant (@font-face)font-variant-alternatesfont-variant-capsfont-variant-east-asianfont-variant-ligaturesfont-variant-numericfont-variant-positionfont-variation-settingsfont-variation-settings (@font-face)font-weight...

background-repeat - CSS: Cascading Style Sheets
syntax /* keyword values */ background-repeat: repeat-x; background-repeat: repeat-y; background-repeat: repeat; background-repeat: space; background-repeat: round; background-repeat: no-repeat; /* two-value syntax: horizontal | vertical */ background-repeat: repeat space; background-repeat: repeat repeat; background-repeat: round space; background-repeat: no-repeat round; /* global values */ background-repeat: inherit; background-repeat: initial; background-repeat: unset; values <repeat-style> the one-value syntax is a shorthand for the full two-value syntax: single value ...
... two-value equivalent repeat-x repeat no-repeat repeat-y no-repeat repeat repeat repeat repeat space space space round round round no-repeat no-repeat no-repeat in the two-value syntax, the first value represents the horizontal repetition behavior and the second value represents the vertical behavior.
... candidate recommendation adds support for multiple background images, the two-value syntax allowing distinct repetition behavior for the horizontal and vertical directions, the space and round keywords, and for backgrounds on inline-level elements by precisely defining the background painting area.

background-size - CSS: Cascading Style Sheets
syntax /* keyword values */ background-size: cover; background-size: contain; /* one-value syntax */ /* the width of the image (height becomes 'auto') */ background-size: 50%; background-size: 3.2em; background-size: 12px; background-size: auto; /* two-value syntax */ /* first value: width of the image, second value: height */ background-size: 50% auto; background-size: 3em 25%; background-size: auto 6px; background-size: auto auto; /* multiple backgrounds */ background-size: aut...
...opera 9.5 also interprets the two-value form as a horizontal scaling factor and, from appearances, a vertical clipping dimension.
...opera 9.5 also interprets the two-value form as a horizontal scaling factor and, from appearances, a vertical clipping dimension.

flex - CSS: Cascading Style Sheets
one-value syntax: the value must be one of: a <number>: in this case it is interpreted as flex: <number> 1 0; the <flex-shrink> value is assumed to be 1 and the <flex-basis> value is assumed to be 0.
... two-value syntax: the first value must be a <number> and it is interpreted as <flex-grow>.
... three-value syntax: the values must be in the following order: a <number> for <flex-grow>.

font-feature-settings - CSS: Cascading Style Sheets
settings */ font-feature-settings: normal; /* set values for opentype feature tags */ font-feature-settings: "smcp"; font-feature-settings: "smcp" on; font-feature-settings: "swsh" 2; font-feature-settings: "smcp", "swsh" 2; /* global values */ font-feature-settings: inherit; font-feature-settings: initial; font-feature-settings: unset; whenever possible, web authors should instead use the font-variant shorthand property or an associated longhand property such as font-variant-ligatures, font-variant-caps, font-variant-east-asian, font-variant-alternates, font-variant-numeric or font-variant-position.
... <feature-tag-value> when rendering text, the list of opentype feature tag value is passed to the text layout engine to enable or disable font features.
...it also applies to ::first-letter and ::first-line.inheritedyescomputed valueas specifiedanimation typediscrete formal syntax normal | <feature-tag-value>#where <feature-tag-value> = <string> [ <integer> | on | off ]?

<position> - CSS: Cascading Style Sheets
/* 1-value syntax */ keyword /* either the horizontal or vertical position; the other axis defaults to center */ value /* the position on the x-axis; the y-axis defaults to 50% */ /* 2-value syntax */ keyword keyword /* a keyword for each direction (the order is irrelevant) */ keyword value /* a keyword for horizontal position, value for vertical ...
...position */ value keyword /* a value for horizontal position, keyword for vertical position */ value value /* a value for each direction (horizontal then vertical) */ /* 4-value syntax */ keyword value keyword value /* each value is an offset from the keyword that preceeds it */ formal syntax [ [ left | center | right ] || [ top | center | bottom ] | [ left | center | right | <length> | <percentage> ] [ top | center | bottom | <length> | <percentage> ]?
... | [ [ left | right ] [ <length> | <percentage> ] ] && [ [ top | bottom ] [ <length> | <percentage> ] ] ] note: the background-position property also accepts a three-value syntax.

visibility - CSS: Cascading Style Sheets
interpolation visibility values are interpolable between visible and not-visible.
... formal definition initial valuevisibleapplies toall elementsinheritedyescomputed valueas specifiedanimation typea visibility formal syntax visible | hidden | collapse examples basic example html <p class="visible">the first paragraph is visible.</p> <p class="not-visible">the second paragraph is not visible.</p> <p class="visible">the third paragraph is visible.
... notice the second paragraph is still occupying space.</p> css .visible { visibility: visible; } .not-visible { visibility: hidden; } table example html <table> <tr> <td>1.1</td> <td class="collapse">1.2</td> <td>1.3</td> </tr> <tr class="collapse"> <td>2.1</td> <td>2.2</td> <td>2.3</td> </tr> <tr> <td>3.1</td> <td>3.2</td> <td>3.3</td> </tr> </table> css .collapse { visibility: collapse; } table { border: 1px solid red; } td { border: 1px solid gray; } specifications specification status comment css flexible box layout modulethe definition of 'visibility' in that specification.

Microdata - HTML: Hypertext Markup Language
microdata uses a supporting vocabulary to describe an item and name-value pairs to assign values to its properties.
... at a high level, microdata consists of a group of name-value pairs.
... the groups are called items, and each name-value pair is a property.

Making PWAs work offline with Service workers - Progressive web apps (PWAs)
var cachename = 'js13kpwa-v1'; var appshellfiles = [ '/pwa-examples/js13kpwa/', '/pwa-examples/js13kpwa/index.html', '/pwa-examples/js13kpwa/app.js', '/pwa-examples/js13kpwa/style.css', '/pwa-examples/js13kpwa/fonts/graduate.eot', '/pwa-examples/js13kpwa/fonts/graduate.ttf', '/pwa-examples/js13kpwa/fonts/graduate.woff', '/pwa-examples/js13kpwa/favicon.ico', '/pwa-examples/js13kpwa/img/js13kgames.png', '/...
...the version number in the cache name is key to this: var cachename = 'js13kpwa-v1'; when this updates to v2, we can then add all of our files (including our new files) to a new cache: contenttocache.push('/pwa-examples/js13kpwa/icons/icon-32.png'); // ...
... self.addeventlistener('install', (e) => { e.waituntil( caches.open('js13kpwa-v2').then((cache) => { return cache.addall(contenttocache); }) ); }); a new service worker is installed in the background, and the previous one (v1) works correctly up until there are no pages using it — the new service worker is then activated and takes over management of the page from the old one.

transform-origin - SVG: Scalable Vector Graphics
one-value syntax: the value must be a <length>, a <percentage>, or one of the keywords left, center, right, top, and bottom.
... two-value syntax: one value must be a <length>, a <percentage>, or one of the keywords left, center, and right.
... three-value syntax: the first two values are the same as for the two-value syntax.

Understanding WebAssembly text format - WebAssembly
multi-value webassembly another more recent addition to the language (for example, in firefox 78) is webassembly multi-value, meaning that webassembly functions can now return multiple values, and instruction sequences can consume and produce multiple stack values.
... at the time of writing (june 2020) this is at an early stage, and the only multi-value instructions available are calls to functions that themselves return multiple values.
...for a useful write up of progress so far and how this works, see multi-value all the wasm!

cfx - Archive of obsolete content
cfx supports the following global options: -h, --help - show a help message and exit -v, --verbose - enable lots of output "command-specific options" are documented alongside the commands.
...use cfx testcfx -v for the specific list of tests.

Unit Testing - Archive of obsolete content
at this point your add-on ought to look like this: /base64 /data icon-16.png package.json readme.md index.js base64.js /test test-base64.js now execute jpm --verbose test from the add-on's root directory.
... obviously, you don't have to pass the --verbose option to jpm if you don't want to; doing so just makes the output easier to read.

MCD, Mission Control Desktop, AKA AutoConfig - Archive of obsolete content
file location (not tested since 2012 ...) in thunderbird , firefox, the javascript preference file that calls the centralized preference file is located in $install_dir_moz_app/defaults/pref, for example in thunderbird this would be repectively for windows/linux: c:\program files\mozilla thunderbird\defaults\pref /usr/lib/thunderbird/default/pref ( it used to be in /usr/lib/thunderbird-version#/default/pref as in /usr/lib/thunderbird-5/default/pref ) for the record/history purpose ...
...compiled?) about:buildconfig build platform target i686-pc-linux-gnu build tools compiler version compiler flags gcc gcc version 3.4.3 20050227 (red hat 3.4.3-22.fc3) -wall -w -wno-unused -wpointer-arith -wcast-align -wno-long-long -pedantic -pthread -pipe c++ gcc version 3.4.3 20050227 (red hat 3.4.3-22.fc3) -fno-rtti -fno-exceptions -wall -wconversion -wpointer-arith -wcast-align -woverloaded-virtual -wsynth -wno-ctor-dtor-privacy -wno-non-virtual-dtor -wno-long-long -pedantic -fshort-wchar -pthread -pipe -i/usr/x11r6/include configure arguments --disable-mailnews --enable-extensions=cookie,xml-rpc,xmlextras,pref,transformiix,universalchardet,webservices,inspector,gnomevfs,negotiateauth --enable-crypto --disable-composer --enable-single-profile --disable-profilesharing --with-system-jp...

Supporting private browsing mode - Archive of obsolete content
to do this, simply watch for the private browsing private-browsing-cancel-vote notification with the subject "exit", and set its data field to true to cancel the operation, like this: var os = components.classes["@mozilla.org/observer-service;1"] .getservice(components.interfaces.nsiobserverservice); os.addobserver(function (asubject, atopic, adata) { asubject.queryinterface(components.interfaces.nsisupportsprbool); // if another extension has ...
...not already canceled entering the private mode if (!asubject.data) { if (adata == "exit") { // if we are leaving the private mode /* you should display some user interface here */ asubject.data = true; // cancel the operation } } }, "private-browsing-cancel-vote", false); note: a well-mannered extension should display some sort of user interface to indicate that private browsing mode will be kept on, and possibly offer the option to cancel whatever operation is preventing the extension from allowing private browsing to be shut off.

Template Logging - Archive of obsolete content
<triple> should have at least one variable as a subject or object both the subject and object attributes of a <triple> element have been set to a non-variable.
...<triple> should have a non-variable value as a predicate the predicate attribute on a <triple> element has either not been set or has been set to a variable.

NP_GetMIMEDescription - Archive of obsolete content
cpp #define mime_type_description "application/basic-plugin:bsp:basic example plug-in for mozilla" const char* np_getmimedescription(void) { return(mime_types_description); } two mime types const char* np_getmimedescription(void) { return "application/basic-example-plugin:xmp1:example 1;application/basic-example2-plugin:xmp2, xm2p:example 2"; } gnome integration if you use gnome vfs (gnome-vfs-2.0), you can get the mime type description with a function.
... #include <libgnomevfs/gnome-vfs-mime-handlers.h> #include <libgnomevfs/gnome-vfs-mime-info.h> #include <libgnomevfs/gnome-vfs-utils.h> // const char* gnome_vfs_mime_get_description (const char *mime_type); const char* desc = gnome_vfs_mime_get_description ("audio/ogg"); if you use gnome gio (gio-2.0), you can get the mime type description too.

Introduction to Public-Key Cryptography - Archive of obsolete content
a dn is a series of name-value pairs, such as uid=doe, that uniquely identify an entity-that is, the certificate subject.
... for example, this might be a typical dn for an employee of example corp: uid=doe,e=doe@example.net,cn=john doe,o=example corp.,c=us the abbreviations before each equal sign in this example have these meanings: uid: user id e: email address cn: the user's common name o: organization c: country dns may include a variety of other name-value pairs.

Solaris 10 Build Prerequisites - Archive of obsolete content
/opt/jdsbld/bin/env.sh % pkgtool --download build-only -v solaris10/sfw{name1}.spec % pkgadd -d .
...{package_name1}-devel % pkgtool --download build-only -v solaris10/sfw{name2}.spec % pkgadd -d .

Developing Mozilla XForms - Archive of obsolete content
debugging always start with a debug build of the xforms and the schema-validation extensions.
...schema validation problems the schema-validation extension contains a logging facility that can show some internals on the schema processing.

Fixing Table Inheritance in Quirks Mode - Archive of obsolete content
*/ table, caption { font-size: -moz-initial; font-weight: -moz-initial; font-style: -moz-initial; font-variant: -moz-initial; } this rule sets all aspects of a table's font, except for the font family, to match the user's preferences setting, thus emulating the behavior of old browsers.
... /* rule to fix quirks-mode inheritance behavior */ table, caption { font-size: inherit; font-weight: inherit; font-style: inherit; font-variant: inherit; } this rule will override the rule in quirk.css and thus allow the author to have reliable inheritance of font styles into tables when in "quirks" mode.

Using the Right Markup to Invoke Plugins - Archive of obsolete content
here is an example: <object type="application/x-java-applet;jpi-version=1.4.1_01" width="460" height="160"> <param name="code" value="animator.class" /> <param name="imagesource" value="images/beans" /> <param name="backgroundcolor" value="0xc0c0c0" /> <param name="endimage" value="10" /> <param name="soundsource" value="audio"> <param name="soundtrack" value="spacemusic.au" /> <param name="sounds" value="1.au|2.au|3.au|4.au|5.au|6.au|7.au|8.au|9.au|0.au...
...if you aren't taking advantage of any version specific features, a more generic mime type such as application/x-java-vm will do the job just as well.

MVC - MDN Web Docs Glossary: Definitions of Web-related terms
mvc (model-view-controller) is a pattern in software design commonly used to implement user interfaces, data, and controlling logic.
...some other design patterns are based on mvc, such as mvvm (model-view-viewmodel), mvp (model-view-presenter), and mvw (model-view-whatever).

Quality values - MDN Web Docs Glossary: Definitions of Web-related terms
quality values, or q-values and q-factors, are used to describe the order of priority of values in a comma-separated list.
... more information http headers using q-values in their syntax: accept, accept-charset, accept-language, accept-encoding, te.

CSS values and units - Learn web development
in the following example we have set the color of our heading using a keyword, and the background using the rgb() function: h1 { color: black; background-color: rgb(197,93,161); } a value in css is a way to define a collection of allowable sub-values.
... the key thing to remember is that each property has a defined list of allowed values, and each value has a definition explaining what the sub-values are.

How CSS is structured - Learn web development
for example, this one line of code: /* in 4-value shorthands like padding and margin, the values are applied in the order top, right, bottom, left (clockwise from the top).
... there are also other shorthand types, for example 2-value shorthands, which set padding/margin for top/bottom, then left/right */ padding: 10px 15px 15px 5px; is equivalent to these four lines of code: padding-top: 10px; padding-right: 15px; padding-bottom: 15px; padding-left: 5px; this one line: background: red url(bg-graphic.png) 10px 10px repeat-x fixed; is equivalent to these five lines: background-color: red; background-image: url(bg-graphic.png); background-position: 10px 10px; background-repeat: repeat-x; background-attachment: fixed; later in the course, you will encounter many other examples of shorthand properties.

Client-side form validation - Learn web development
try out the new behavior in the example below: note: you can find this example live on github as fruit-validation.html (see also the source code.) try submitting the form without a value.
... here is the live result: note: you can find this example live on github as detailed-custom-validation.html (see also the source code.) the constraint validation api gives you a powerful tool to handle form validation, letting you have enormous control over the user interface above and beyond what you can do with html and css alone.

Adding vector graphics to the Web - Learn web development
you can find this example live on our github repo as vector-versus-raster.html — it shows two seemingly identical images side by side, of a red star with a black drop shadow.
...again, go to the vector-versus-raster.html demo for a real example!

Multimedia: video - Learn web development
remove audio from muted hero videos for hero-video or other video without audio, removing audio is smart.
... <video autoplay="" loop="" muted="true" playsinline="" id="hero-video"> <source src="banner_video.webm" type='video/webm; codecs="vp8, vorbis"'> <source src="web_banner.mp4" type="video/mp4"> </video> this hero-video code (above) is common to conference websites and corporate home pages.

Server-side web frameworks - Learn web development
whether or not the framework encourages good development practices: for example, a framework that encourages a model-view-controller architecture to separate code into logical functions will result in more maintainable code than one that has no expectations on developers.
...it similarly encourages the use of design patterns like dry ("dont repeat yourself" — write code only once if at all possible), mvc (model-view-controller) and a number of others.

Getting started with Vue - Learn web development
follow the steps below: in terminal, cd to where you'd like to create your sample app, then run vue create moz-todo-vue.
... so if you wanted to create the moz-todo-vue project with npm and you'd previously chosen yarn, you’d run vue create moz-todo-vue --packagemanager=npm.

Understanding client-side JavaScript frameworks - Learn web development
if you need to check your code against our version, you can find a finished version of the sample vue app code in our todo-vue repository.
... for a running live version, see https://mdn.github.io/todo-vue/dist/.

Introduction to automated testing - Learn web development
once the install completes, test that node is installed by typing the following into the terminal, which returns the installed versions of node and npm: node -v npm -v if you've got node/npm already installed, you should update them to their latest versions.
... in the next screen, type in the url of a page you want to test (use http://mdn.github.io/learning-area/javascript/building-blocks/events/show-video-box-fixed.html, for example), then choose a browser/os combination you want to test by using the different buttons and lists.

Using JavaScript code modules
note: each scope that imports a module receives a by-value copy of the exported symbols in that module.
... scope 1: components.utils.import("resource://app/my_module.jsm"); bar = "foo"; alert(bar); // displays "foo" scope 2: components.utils.import("resource://app/my_module.jsm"); alert(bar); // displays "[object object]" the main effect of the by-value copy is that global variables of simple types won't be shared across scopes.

Application Translation with Mercurial
paste the following content into the file: [ui] username = firstname lastname <mynick@example.com> merge = internal:merge [alias] qexport = export -g -r qtip qexportall = diff -r qparent [defaults] commit = -v diff = -p -u 8 qdiff = -p -u 8 qnew = -u [diff] git = 1 showfunc = 1 unified = 8 [extensions] hgext.mq = progress = [hooks] put in your name and email address which later will be public on the internet after your translation patch got accepted and uploaded.
... now export the patch to the file system using the qexport command which is defined in the .hgrc file (see above): hg qexport > ../firefox-29-aboutprivatebrowsing-v1.patch this creates a patch file called firefox-29-aboutprivatebrowsing-v1.patch containing the changes in the parent directory of de-mozilla-aurora (in this example: c:\mozilla\).

Writing localizable code
about localizers a few notes about localizers for developers who rarely deal with them: localizers like tools, and they don't like editors, localization tools are often based on key-value pairs, at least some localizers have their talents focused on language skills and are not savvy in programming, or even building applications.
...in most cases, you can just as well put the processing into the content code and reference different key-value pairs in l10n.

Mozilla Style System Documentation
the fundamental way to get a style struct from a style context looks like this: const nsstyledisplay *display = ns_static_cast(const nsstyledisplay*, sc->getstyledata(estylestruct_display)); there is also a (non-virtual) method on nsiframe to get the style data from a frame's style context (saving the refcounting needed to get the style context): const nsstyledisplay *display; frame->getstyledata(estylestruct_display, (const nsstylestruct*&)display); however, there are similar typesafe global function templates that (should) compile to the same thing but use the type of the template parameter to pass th...
...(in css,declarations are the property-value pairs within style rules.

Scroll-linked effects
as the scroll event listener runs in the javascript on the browser's main thread, it will be asynchronous relative to the user-visible scrolling.
... therefore, with asynchronous scrolling, the event handler will be delayed relative to the user-visible scroll, and so the div will not stay visually fixed as intended.

NSS tools : ssltab
name ssltap — tap into ssl connections and display the data going by synopsis libssltap [-vhfsxl] [-p port] [hostname:port] description the ssl debugging tool ssltap is an ssl-aware command-line proxy.
...if a connection is ssl, the data display includes interpreted ssl records and handshaking options -v print a version string for the tool.

NSS tools : ssltap
name ssltap — tap into ssl connections and display the data going by synopsis libssltap [-vhfsxl] [-p port] [hostname:port] description the ssl debugging tool ssltap is an ssl-aware command-line proxy.
...if a connection is ssl, the data display includes interpreted ssl records and handshaking options -v print a version string for the tool.

NSS Tools pk12util
synopsis pk12util -i p12file [-h tokenname] [-v] [common-options] or pk12util -o p12file -n certname [-c keycipher] [-c certcipher] [-m | --key_len keylen] [-n | --cert_key_len certkeylen] [common-options] or pk12util -l p12file [-h tokenname] [-r] [common-options] where [common-options] = [-d dir] [-p dbprefix] [-k slotpasswordfile | -k slotpassword] [-w p12filepasswordfile | -w p12filepassword] syntax to run the pkcs #12 tool, typ...
... -h tokenname specify the name of the token to import into or export from -v enable debug logging when importing -k slotpasswordfile specify the text file containing the slot's password -k slotpassword specify a slot's password -w p12filepasswordfile specify the text file containing the pkcs 12 file's password -w p12filepassword specify the pkcs 12 file's password -c key-cipher specify the key encryption algorithm -c certcipher specify the pfx encryption a...

NSS Tools ssltap
syntax to run the ssl debugging tool, type this command in a command shell: ssltap [-vhfsxl] [-p port] hostname:port options the command does not require any options other than hostname:port, but you normally use them to control the connection interception and output.
... the options for the command are the following: -v print a version string for the tool.

NSS tools : ssltap
name ssltap — tap into ssl connections and display the data going by synopsis libssltap [-vhfsxl] [-p port] [hostname:port] description the ssl debugging tool ssltap is an ssl-aware command-line proxy.
...if a connection is ssl, the data display includes interpreted ssl records and handshaking options -v print a version string for the tool.

Hacking Tips
$ valgrind --smc-check=all-non-file --vex-iropt-register-updates=allregs-at-mem-access --vgdb-error=0 ./js … this command will tell you how to start gdb as a remote.
... $ valgrind --tool=callgrind --callgrind-out-file=bench.clg \ --smc-check=all-non-file --vex-iropt-register-updates=allregs-at-mem-access ./js ./run.js the output file can then be use with kcachegrind which provides a graphical view of the call graph.

Bytecode Descriptions
(per spec, unary - supports bigints, but unary + does not.) format: jof_ic neg stack: val ⇒ (-val) the unary - operator.
... convert val to a numeric value, then push -val.

JSFastNative
vp jsval * the arguments, including the this argument, the return-value slot, and the callee function object are accessible through this pointer using macros described below.
... js_rval(cx, vp) returns the jsval that is currently in the return-value slot.

JS_DefineConstDoubles
the last array element must contain zero-valued members.
...the last array element must contain zero-valued members.

SpiderMonkey 1.8.5
if you are running valgrind on your embedding, be sure to build spidermonkey with the --enable-valgrind option to suppress superflous error messages triggered by the garbage collector.
...to check what version you are running, issue the command /usr/bin/g++-4.2 -v from a terminal window.

SpiderMonkey 1.8.7
if you are running valgrind on your embedding, be sure to build spidermonkey with the --enable-valgrind option to suppress superflous error messages triggered by the garbage collector.
...to check what version you are running, issue the command /usr/bin/g++-4.2 -v from a terminal window.

SpiderMonkey 1.8.8
—insert-actual-release-date-here platform support spidermonkey 1.8.8 is supported on all the platforms where firefox insert-actual-firefox-version-number-here runs.
...future direction include-followup-on-experimental-library-versioning-scheme-here spidermonkey embedders should also be aware that mozilla has no plans to keep the jsapi, nor the jsdbgapi stable for embedders.

Signing Mozilla apps for Mac OS X
-v increases the verbosity of the codesign tool's output.
...once the application has been signed, the signature of an application bundle can be validated by calling: codesign -vvvv application.app where application.app is the application bundle you wish to validate.

Mork
at its core, it can be viewed as a set of rows, collections of name-value pairs, which can be organized into various tables.
...cells and aliases and mids cells are the core of mork: they are key-value pairs of columns and the particular row's values.

Creating a Python XPCOM component
registering the interface in the "components" directory, execute : ../xpidl -m typelib -w -v -i /usr/share/idl/mozilla/ nsipysimple.idl on windows you must point to the idl directory as part of your mozilla build.
... for example: xpidl.exe -m typelib -w -v -i c:\source\mozilla\obj-i686-pc-mingw32\dist\idl foo.idl xpidl will then create nsipysimple.xpt, which should be placed correctly (e.g., in the 'components' directory).

Index
400 nsiclipboard clipboard, interfaces, interfaces:scriptable, xpcom, xpcom api reference, xpcom interface reference most clipboard operations in firefox use kglobalclipboard, which is the one also used by the typical control-c/control-v keyboard shortcuts.
... 797 nsinavhistoryresult developing mozilla, extensions, interfaces, places, xpcom, xpcom api reference places results use a model-view-controller (mvc) design pattern.

nsICategoryManager
xpcom/components/nsicategorymanager.idlscriptable this interface provides access to a data structure that holds a list of name-value pairs, called categories, where each value is a list of strings.
...let categorymanager = cc['@mozilla.org/categorymanager;1']; categorymanager.getservice(ci.nsicategorymanager).deletecategoryentry('gecko-content-viewers', content_type, false); // update pref manager to prevent plugins from loading in future var stringtypes = ''; var types = []; var pref_disabled_plugin_types = 'plugin.disable_full_page_plugin_for_types'; if (services.prefs.prefhasuservalue(pref_disabled_plugin_types)) { stringtypes = services.prefs.getcharpref(pref_disabled_plugin_types); } if (stringtypes !== '') { types = strin...

nsIDictionary
setvalue() add the key-value pair to the dictionary.
...clear() delete all key-value pairs from the dictionary.

nsIObserverService
this string-valued key uniquely identifies the notification.
...this string-valued key uniquely identifies the notification.

nsIXSLTProcessor
this will make the processor use the default-value for all parameters as specified in the stylesheet.
...this will make the processor use the default-value for the parameter as specified in the stylesheet.

NS ENSURE SUCCESS
summary macro returns return-value if ns_failed(nsresult) evaluates to true, and shows a warning on stderr in that case.
... syntax ns_ensure_success(nsresult, return-value); usage nsresult mozmyclass::mozstringmucking() { nsresult rv = ns_cstringcopy(mdeststring, msrcstring); ns_ensure_success(rv, rv); // this is the same as doing: nsresult rv = ns_cstringcopy(mdeststring, msrcstring); if (ns_failed(rv)) return rv; return ns_ok; } ...

NS ENSURE TRUE
summary macro returns return-value if expr evaluates to false.
... syntax ns_ensure_true( expr, return-value ); usage nsresult mozmyclass::mozstringmucking() { char *foo = new char[123]; ns_ensure_true(foo, ns_error_out_of_memory); // this is equivalent to doing: if (!foo) return ns_error_out_of_memory; // thou shalt not return ns_error_failure..

Virtualenv
if you're running ubuntu, there is also an ubuntu package available: sudo apt-get install python-virtualenv virtualenv.py may also be run as standalone software with the same functionality.
...tensions to ian bicking’s virtualenv tool for creating isolated python development environments; http://www.doughellmann.com/projects...tualenvwrapper the mozilla-central virtualenv in order to make use of various python modules located throughout mozilla-central, a virtualenv is created as part of the build process: http://mxr.mozilla.org/mozilla-central/source/js/src/build/autoconf/python-virtualenv.m4 .

Working with windows in chrome code
this is different from the user-visible window title, which is specified using xul.
... note: if you want to pass data between privileged (chrome) and non-privileged (web page) windows, or vice-versa, read this instead.

Network request list - Firefox Developer Tools
set-cookie-name:_ga set-cookie-value shows the resources that have a set-cookie header with a value that matches the specified value.
... set-cookie-value:true regexp shows the resources having a url that matches the given regular expression.

AudioTrack.enabled - Web APIs
function swapcommentarymain() { var videoelem = document.getelementbyid("main-video"); var audiotrackmain; var audiotrackcommentary; videoelem.audiotracks.foreach(track) { if (track.kind === "main") { audiotrackmain = track; } else if (track.kind === "commentary") { audiotrackcommentary = track; } } if (audiotrackmain && audiotrackcommentary) { var commentaryenabled = audiotrackcommentary.enabled; audiotrackcommentary.enabled = aud...
...iotrackmain.enabled; audiotrackmain.enabled = commentaryenabled; } } the swapcommentarymain() function above finds within the audio tracks of the <video> element "main-video" the audio tracks whose kind values are "main" and "commentary".

Timing element visibility with the Intersection Observer API - Web APIs
updateadtimer(adbox); adbox.dataset.lastviewstarted = 0; }); } } else { previouslyvisibleads.foreach(function(adbox) { adbox.dataset.lastviewstarted = performance.now(); }); visibleads = previouslyvisibleads; previouslyvisibleads = null; } } since the event itself doesn't state whether the document has switched from visible to invisible or vice-versa, the document.hidden property is checked to see if the document is not currently visible.
... finally, the last-viewed time for the ad is updated to the current time.

KeyframeEffect.setKeyframes() - Web APIs
an object containing key-value pairs consisting of the property to animate and an array of values to iterate over.
... attributes keyframes may specify property-value pairs for any of the animatable css properties.

MediaTrackSettings - Web APIs
logicalsurface a boolean value which, if true, indicates that the video contained in the stream's video track contains a background rendering context, rather than a user-visible one.
... this is false if the video being captured is coming from a foreground (user-visible) source.

RsaHashedImportParams - Web APIs
the rsahashedimportparams dictionary of the web crypto api represents the object that should be passed as the algorithm parameter into subtlecrypto.importkey() or subtlecrypto.unwrapkey(), when importing any rsa-based key pair: that is, when the algorithm is identified as any of rsassa-pkcs1-v1_5, rsa-pss, or rsa-oaep.
...this should be set to rsassa-pkcs1-v1_5, rsa-pss, or rsa-oaep, depending on the algorithm you want to use.

RsaHashedKeyGenParams - Web APIs
the rsahashedkeygenparams dictionary of the web crypto api represents the object that should be passed as the algorithm parameter into subtlecrypto.generatekey(), when generating any rsa-based key pair: that is, when the algorithm is identified as any of rsassa-pkcs1-v1_5, rsa-pss, or rsa-oaep.
...this should be set to rsassa-pkcs1-v1_5, rsa-pss, or rsa-oaep, depending on the algorithm you want to use.

SubtleCrypto.deriveBits() - Web APIs
async function derivesharedsecret(privatekey, publickey) { const sharedsecret = await window.crypto.subtle.derivebits( { name: "ecdh", namedcurve: "p-384", public: publickey }, privatekey, 128 ); const buffer = new uint8array(sharedsecret, 0, 5); const sharedsecretvalue = document.queryselector(".ecdh .derived-bits-value"); sharedsecretvalue.classlist.add("fade-in"); sharedsecretvalue.addeventlistener("animationend", () => { sharedsecretvalue.classlist.remove("fade-in"); }); sharedsecretvalue.textcontent = `${buffer}...[${sharedsecret.bytelength} bytes total]`; } // generate 2 ecdh key pairs: one for alice and one for bob // in more normal usage, they would generate their key pairs // separately ...
...etkeymaterial(); salt = window.crypto.getrandomvalues(new uint8array(16)); const derivedbits = await window.crypto.subtle.derivebits( { "name": "pbkdf2", salt: salt, "iterations": 100000, "hash": "sha-256" }, keymaterial, 256 ); const buffer = new uint8array(derivedbits, 0, 5); const derivedbitsvalue = document.queryselector(".pbkdf2 .derived-bits-value"); derivedbitsvalue.classlist.add("fade-in"); derivedbitsvalue.addeventlistener("animationend", () => { derivedbitsvalue.classlist.remove("fade-in"); }); derivedbitsvalue.textcontent = `${buffer}...[${derivedbits.bytelength} bytes total]`; } const derivebitsbutton = document.queryselector(".pbkdf2 .derive-bits-button"); derivebitsbutton.addeventlistener("click", () => { getderi...

WebGLRenderingContext.vertexAttribPointer() - Web APIs
most meshes have the color specified at a per-vertex level, but some meshes are of a uniform shade.
...for better performance, we align the data to 32 bits by also storing a fourth zero-valued component, bringing the total size to 4 bytes.

A basic 2D WebGL animation example - Web APIs
<script id="vertex-shader" type="x-shader/x-vertex"> attribute vec2 avertexposition; uniform vec2 uscalingfactor; uniform vec2 urotationvector; void main() { vec2 rotatedposition = vec2( avertexposition.x * urotationvector.y + avertexposition.y * urotationvector.x, avertexposition.y * urotationvector.y - avertexposition.x * urotationvector.x ); gl_position = vec4(rotatedposition * us...
...this is done using uniform2fv() (since this is a 2-value floating-point vector).

Clearing by clicking - Web APIs
<p>a very simple webgl program that still shows some color and user interaction.</p> <p>you can repeatedly click the empty canvas or the button below to change color.</p> <canvas id="canvas-view">your browser does not seem to support html5 canvas.</canvas> <button id="color-switcher">press here to switch color</button> body { text-align : center; } canvas { display : block; width : 280px; height : 210px; margin : auto; padding : 0; border : none; background-color : black; } button { display : inline-block; font-size : inherit; margin : auto; padding : 0.6...
... var canvas = document.queryselector("#canvas-view"); var button = document.queryselector("#color-switcher"); canvas.addeventlistener("click", switchcolor, false); button.addeventlistener("click", switchcolor, false); // a variable to hold the webglrenderingcontext.

Simple color animation - Web APIs
<p>a simple webgl program that shows color animation.</p> <p>you can click the button below to toggle the color animation on or off.</p> <canvas id="canvas-view">your browser does not seem to support html5 canvas.</canvas> <button id="animation-onoff"> press here to <strong>[verb goes here]</strong> the animation </button> body { text-align : center; } canvas { display : block; width : 280px; height : 210px; margin : auto; padding : 0; border : none; background-color : black; } button { display : inline-block; font-size :...
... stopanimation({type: "click"}); var gl; function drawanimation () { if (!gl) { var canvas = document.getelementbyid("canvas-view"); gl = canvas.getcontext("webgl") ||canvas.getcontext("experimental-webgl"); if (!gl) { clearinterval(timer); alert("failed to get webgl context.\n" + "your browser or device may not support webgl."); return; } gl.viewport(0, 0, gl.drawingbufferwidth, gl.drawingbufferheight); } // get a random color value using...

WebGL best practices - Web APIs
l 1 extensions are universally supported: angle_instanced_arrays ext_blend_minmax oes_element_index_uint oes_standard_derivatives oes_vertex_array_object webgl_debug_renderer_info webgl_lose_context (see also: https://jdashg.github.io/misc/webgl/webgl-feature-levels.html) consider polyfilling these into webglrenderingcontext, like: https://github.com/jdashg/misc/blob/master/webgl/webgl-v1.1.js universally supported limits the minimum requirements for webgl are quite low.
... one common trade-off is to some lighting calculations per-vertex instead of per-fragment (pixel).

Establishing a connection: The WebRTC perfect negotiation pattern - Web APIs
: [{ urls: "stun:stun.mystunserver.tld" }] }; const selfvideo = document.queryselector("video.selfview"); const remotevideo = document.queryselector("video.remoteview"); const signaler = new signalingchannel(); const pc = new rtcpeerconnection(config); this code also gets the <video> elements using the classes "selfview" and "remoteview"; these will contain, respectively, the local user's self-view and the view of the incoming stream from the remote peer.
...then, finally, the media source for the self-view <video> element indicated by the selfvideo constant is set to the camera and microphone stream, allowing the local user to see what the other peer sees.

Signaling and video calling - Web APIs
target the username of the person to receive the description (if the caller is sending the message, this specifies the callee, and vice-versa).
...take note of the two <video> elements, one for your self-view, one for the connection, and the <button> element.

Viewpoints and viewers: Simulating cameras in WebXR - Web APIs
the first and most important thing to understand when considering the code to manage point-of-view and cameras in your application is this: webxr does not have cameras.
... trucking (moving left or right) trucking using a physical camera uses the same kind of rigging as dollying, but instead of moving the camera forward and backward, it moves from left to right or vice-versa.

WebXR application life cycle - Web APIs
call navigator.xr.issessionsupported(), specifying the webxr experience mode you want to provide: inline, immersive-vr, or immersive-ar, in order to determine whether or not the type of session you wish to provide is available.
...this is done by calling navigator.xr.requestsession(), again specifying the string indicating the mode you want to enable: inline, immersive-vr, or immersive-ar.

Keyframe Formats - Web APIs
an object containing key-value pairs consisting of the property to animate and an array of values to iterate over.
... attributes keyframes may specify property-value pairs for any of the animatable css properties.

Using the Web Speech API - Web APIs
change voices using the dropdown menu.</p> <form> <input type="text" class="txt"> <div> <label for="rate">rate</label><input type="range" min="0.5" max="2" value="1" step="0.1" id="rate"> <div class="rate-value">1</div> <div class="clearfix"></div> </div> <div> <label for="pitch">pitch</label><input type="range" min="0" max="2" value="1" step="0.1" id="pitch"> <div class="pitch-value">1</div> <div class="clearfix"></div> </div> <select> </select> </form> javascript let's investigate the javascript that powers this app.
... var synth = window.speechsynthesis; var inputform = document.queryselector('form'); var inputtxt = document.queryselector('.txt'); var voiceselect = document.queryselector('select'); var pitch = document.queryselector('#pitch'); var pitchvalue = document.queryselector('.pitch-value'); var rate = document.queryselector('#rate'); var ratevalue = document.queryselector('.rate-value'); var voices = []; populating the select element to populate the <select> element with the different voice options the device has available, we've written a populatevoicelist() function.

Using the Web Storage API - Web APIs
basic concepts storage objects are simple key-value stores, similar to objects, but they stay intact through page loads.
...these three lines all set the (same) colorsetting entry: localstorage.colorsetting = '#a4509b'; localstorage['colorsetting'] = '#a4509b'; localstorage.setitem('colorsetting', '#a4509b'); note: it's recommended to use the web storage api (setitem, getitem, removeitem, key, length) to prevent the pitfalls associated with using plain objects as key-value stores.

XREye - Web APIs
values left the xrview represents the point-of-view of the viewer's left eye.
... none the xrview describes a monoscopic view, or the view otherwise doesn't represent a particular eye's point-of-view.

XRSessionMode - Web APIs
immersive-vr indicates that the rendered session will be displayed using an immersive xr device in vr mode; it is not intended to be overlaid or integrated into the surrounding environment.
... the immersive-ar mode supports all the same features and reference spaces that immersive-vr does, since both are immersive sessions.

XRView.eye - Web APIs
syntax let eye = xrview.eye; value a domstring whose value is one of the strings enumerated by the xreye type: left the xrview represents the point-of-view of the viewer's left eye.
... none the xrview describes a monoscopic view, or the view otherwise doesn't represent a particular eye's point-of-view.

ARIA: grid role - Accessibility
<tr role="row"> <th scope="row" role="rowheader">week 40</th> <td role="gridcell" tabindex="-1"> 30 </td> <td>1</td> <td>2</td> <td>3</td> <td>4</td> <td>5</td> <td>6</td> </tr> </tbody> </table> css body { margin: 2rem; font-family: "helvetica neue", sans-serif; } table { margin: 0; border-collapse: collapse; font-variant-numeric: tabular-nums; } tbody th, tbody td { padding: 5px; } tbody td { border: 1px solid #000; text-align: right; color: #767676; } tbody td[role="gridcell"] { color: #000; } tbody td[role="gridcell"]:hover, tbody td[role="gridcell"]:focus { background-color: #f6f6f6; outline: 3px solid blue; } } javascript var selectables = document.queryselectorall('table td[ro...
... 4 </td> <td role="gridcell" tabindex="-1"> 5 </td> <td role="gridcell" tabindex="-1"> 6 </td> <td role="gridcell" tabindex="-1"> 7 </td> <td role="gridcell" tabindex="-1"> 8 </td> </tr> <!-- … additional rows … --> </tbody> </table> css table { margin: 0; border-collapse: collapse; font-variant-numeric: tabular-nums; } tbody th, tbody td { padding: 5px; } tbody td { border: 1px solid #000; text-align: right; color: #767676; } tbody td[role="gridcell"] { color: #000; } tbody td[role="gridcell"]:hover, tbody td[role="gridcell"]:focus { background-color: #f6f6f6; outline: 3px solid blue; } javascript var selectables = document.queryselectorall('table td[role="gridc...

Custom properties (--*): CSS variables - CSS: Cascading Style Sheets
initial valuesee proseapplies toall elementsinheritedyescomputed valueas specified with variables substitutedanimation typediscrete syntax --somekeyword: left; --somecolor: #0000ff; --somecomplexvalue: 3px 6px rgb(20, 32, 54); <declaration-value> this value matches any sequence of one or more tokens, so long as the sequence does not contain an unallowed token.
... formal syntax <declaration-value> example html <p id="firstparagraph">this paragraph should have a blue background and yellow text.</p> <p id="secondparagraph">this paragraph should have a yellow background and blue text.</p> <div id="container"> <p id="thirdparagraph">this paragraph should have a green background and yellow text.</p> </div> css :root { --first-color: #488cff; --second-color: #ffff8c; } #firstparagraph { background-color: var(--first-color); color: var(--second-color); } #secondparagraph { background-color: var(--second-color); color: var(--first-col...

system - CSS: Cascading Style Sheets
numeric interprets the counter symbols as digits in a place-value numbering system.
... additive used to represent "sign-value" numbering systems, such as roman numerals, which rather than reuse digits in different positions to obtain different values, define additional digits for larger values.

font-weight - CSS: Cascading Style Sheets
in earlier versions of the font-weight specification, the property accepts only keyword values and the numeric values 100, 200, 300, 400, 500, 600, 700, 800, and 900; non-variable fonts can only really make use of these set values, although fine-grained values (e.g.
... 451) will be translated to one of these values for non-variable fonts.

Border-radius generator - CSS: Cascading Style Sheets
cursor = "e-resize"; var delta = (e.clientx - startx) / obj.sensivity | 0; var value = delta * obj.step + start_value; setvalue(obj.topic, value); } return slider; } var inputslider = function(node) { var min = node.getattribute('data-min') | 0; var max = node.getattribute('data-max') | 0; var step = node.getattribute('data-step') | 0; var value = node.getattribute('data-value') | 0; var topic = node.getattribute('data-topic'); var unit = node.getattribute('data-unit'); var name = node.getattribute('data-info'); var sensivity = node.getattribute('data-sensivity') | 0; this.min = min; this.max = max > 0 ?
...put-slider ui-input-slider-container'; this.input = input; sliders[topic] = this; setvalue(topic, value); } var setvalue = function setvalue(topic, value, send_notify) { var slider = sliders[topic]; if (slider === undefined) return; if (value > slider.max) value = slider.max; if (value < slider.min) value = slider.min; slider.value = value; slider.node.setattribute('data-value', value); if (send_notify !== undefined && send_notify === false) { slider.input.value = value + slider.unit; return; } notify.call(slider); } var setmax = function setmax(topic, value) { var slider = sliders[topic]; if (slider === undefined) return; slider.max = value; setvalue(topic, slider.value); } var setmin = function setmin(topic, value) { var slider =...

Logical properties for floating and positioning - CSS: Cascading Style Sheets
inset sets all four inset values simultaneously with physical mapping of multi-value.
... new two- and four-value shorthands as with other properties in the specification we have some new shorthand properties, which give the ability to set two or four values at once.

Using CSS transforms - CSS: Cascading Style Sheets
orthand classes for different perspective values */ .pers250 { perspective: 250px; } .pers350 { perspective: 350px; } .pers500 { perspective: 500px; } .pers650 { perspective: 650px; } /* define the container div, the cube div, and a generic face */ .container { width: 200px; height: 200px; margin: 75px 0 0 75px; border: none; } .cube { width: 100%; height: 100%; backface-visibility: visible; perspective-origin: 150% 150%; transform-style: preserve-3d; } .face { display: block; position: absolute; width: 100px; height: 100px; border: none; line-height: 100px; font-family: sans-serif; font-size: 60px; color: white; text-align: center; } /* define each face based on direction */ .front { background: rgba(0, 0, 0, 0.3); transform: translat...
...ttom; } .pobr { perspective-origin: bottom right; } .po200200neg { perspective-origin: -200% -200%; } .po200200pos { perspective-origin: 200% 200%; } .po200200 { perspective-origin: 200% -200%; } /* define the container div, the cube div, and a generic face */ .container { width: 100px; height: 100px; margin: 24px; border: none; } .cube { width: 100%; height: 100%; backface-visibility: visible; perspective: 300px; transform-style: preserve-3d; } .face { display: block; position: absolute; width: 100px; height: 100px; border: none; line-height: 100px; font-family: sans-serif; font-size: 60px; color: white; text-align: center; } /* define each face based on direction */ .front { background: rgba(0, 0, 0, 0.3); transform: translatez(50px); }...

CSS data types - CSS: Cascading Style Sheets
index the data types defined by the set of css specifications include the following: <angle> <angle-percentage> <angular-color-hint> <angular-color-stop> <attr-fallback> <attr-name> <basic-shape> <blend-mode> <calc-product> <calc-sum> <calc-value> <color> <color-stop> <color-stop-angle> <counter-style> <custom-ident> <dimension> <filter-function> <flex> <frequency> <frequency-percentage> <gradient> <ident> <image> <integer> <length> <length-percentage> <number> <number-percentage> <percentage> <position> <quote> <ratio> <resolution> <shape-box> <shape-radius> <string> <time> <time-percentage> <timing-funct...
...ion> <toggle-value> <transform-function> <type-or-unit> <url> <url-modifier> <zero> specifications specification status comment css values and units module level 4 editor's draft css values and units module level 3 candidate recommendation initial definition.

Using CSS custom properties (variables) - CSS: Cascading Style Sheets
for example: .two { color: var(--my-var, red); /* red if --my-var is not defined */ } .three { background-color: var(--my-var, var(--my-background, pink)); /* pink if --my-var and --my-background are not defined */ } .three { background-color: var(--my-var, --my-background, pink); /* invalid: "--my-background, pink" */ } including a custom property as a fallback, as seen in the second example above, is the correct way to provi...
... // get variable from inline style element.style.getpropertyvalue("--my-var"); // get variable from wherever getcomputedstyle(element).getpropertyvalue("--my-var"); // set variable on inline style element.style.setproperty("--my-var", jsvar + 4); ...

<color> - CSS: Cascading Style Sheets
canvas background of application content or documents canvastext text in application content or documents field background of input fields fieldtext text in input fields graytext text that is disabled highlight background of items that are selected in a control highlighttext text of items that are selected in a control linktext text of non-active, non-visited links visitedtext text of visited links deprecated system color keywords the following keywords were defined in earlier versions of the css color module.
... -moz-visitedhyperlinktext user's preference for the text color of visited links.

font-optical-sizing - CSS: Cascading Style Sheets
the optical size variation axis is represented by opsz in font-variation-settings.
... you should see a difference in supporting browsers.</p> @font-face { src: url('amstelvaralpha-vf.ttf'); font-family:'amstelvar'; font-style: normal; } p { font-size: 36px; font-family: amstelvar; } .no-optical-sizing { font-optical-sizing: none; } note: the font referenced above — which includes optical sizing and is freely-licensed — is good for testing.

font-style - CSS: Cascading Style Sheets
see font-variation-settings.
... html <header> <input type="range" id="slant" name="slant" min="-90" max="90" /> <label for="slant">slant</label> </header> <div class="container"> <p class="sample">...it would not be wonderful to meet a megalosaurus, forty feet long or so, waddling like an elephantine lizard up holborn hill.</p> </div> css /* amstelvaralpha-vf is created by david berlow (https://github.com/typenetwork/amstelvar) and is used here under the terms of its license: https://github.com/typenetwork/amstelvar/blob/master/ofl.txt */ @font-face { src: url('https://mdn.mozillademos.org/files/16044/amstelvaralpha-vf.ttf'); font-family:'amstelvaralpha'; font-style: normal; } label { font: 1rem monospace; } .container { max-height: 150p...

font-weight - CSS: Cascading Style Sheets
in earlier versions of the font-weight specification, the property accepts only keyword values and the numeric values 100, 200, 300, 400, 500, 600, 700, 800, and 900; non-variable fonts can only really make use of these set values, although fine-grained values (e.g.
... 451) will be translated to one of these values for non-variable fonts using the fallback weights system.

hanging-punctuation - CSS: Cascading Style Sheets
one-value syntax uses any one of the keyword values in the list below.
... two-value syntax uses one of the following: first together with any one of last, allow-end, or force-end last together with any one of first, allow-end, or force-end three-value syntax uses one of the following: first, allow-end, and last first, force-end, and last values none no character hangs.

mask-repeat - CSS: Cascading Style Sheets
/* one-value syntax */ mask-repeat: repeat-x; mask-repeat: repeat-y; mask-repeat: repeat; mask-repeat: space; mask-repeat: round; mask-repeat: no-repeat; /* two-value syntax: horizontal | vertical */ mask-repeat: repeat space; mask-repeat: repeat repeat; mask-repeat: round space; mask-repeat: no-repeat round; /* multiple values */ mask-repeat: space round, no-repeat; mask-repeat: round repeat, space, repeat-x; /* global values */ mask-repeat: inherit; mask-repeat: initial; mask-repeat: unset; by default, the repeated images are clipped to the size of the element, but they can be scaled to fit (using round) or even...
... values <repeat-style> the one-value syntax is a shorthand for the full two-value syntax: single value two-value equivalent repeat-x repeat no-repeat repeat-y no-repeat repeat repeat repeat repeat space space space round round round no-repeat no-repeat no-repeat in the two-value syntax, the first value represents the horizontal repetition behavior and the second value represents the vertical behavior.

opacity - CSS: Cascading Style Sheets
syntax values <alpha-value> a <number> in the range 0.0 to 1.0, inclusive, or a <percentage> in the range 0% to 100%, inclusive, representing the opacity of the channel (that is, the value of its alpha channel).
... webaim: color contrast checker mdn understanding wcag, guideline 1.4 explanations understanding success criterion 1.4.3 | w3c understanding wcag 2.0 formal definition initial value1.0applies toall elementsinheritednocomputed valuethe specified value, clipped in the range [0,1]animation typea number formal syntax <alpha-value>where <alpha-value> = <number> | <percentage> examples setting background opacity html <div class="light">you can barely see this.</div> <div class="medium">this is easier to see.</div> <div class="heavy">this is very easy to see.</div> css div { background-color: yellow; } .light { opacity: 0.2; /* barely see the text over the background */ } .medium { opacity: 0.5; /* see the text...

perspective-origin - CSS: Cascading Style Sheets
syntax /* one-value syntax */ perspective-origin: x-position; /* two-value syntax */ perspective-origin: x-position y-position; /* when both x-position and y-position are keywords, the following is also valid */ perspective-origin: y-position x-position; /* global values */ perspective-origin: inherit; perspective-origin: initial; perspective-origin: unset; values x-position indicates the position of...
...ttom; } .pobr { perspective-origin: bottom right; } .po200200neg { perspective-origin: -200% -200%; } .po200200pos { perspective-origin: 200% 200%; } .po200200 { perspective-origin: 200% -200%; } /* define the container div, the cube div, and a generic face */ .container { width: 100px; height: 100px; margin: 24px; border: none; } .cube { width: 100%; height: 100%; backface-visibility: visible; perspective: 300px; transform-style: preserve-3d; } .face { display: block; position: absolute; width: 100px; height: 100px; border: none; line-height: 100px; font-family: sans-serif; font-size: 60px; color: white; text-align: center; } /* define each face based on direction */ .front { background: rgba(0, 0, 0, 0.3); transform: translatez(50px); }...

shape-image-threshold - CSS: Cascading Style Sheets
/* <number> value */ shape-image-threshold: 0.7; /* global values */ shape-image-threshold: inherit; shape-image-threshold: initial; shape-image-threshold: unset; syntax values <alpha-value> sets the threshold used for extracting a shape from an image.
... formal definition initial value0.0applies tofloatsinheritednocomputed valuethe same as the specified value after clipping the <number> to the range [0.0, 1.0].animation typea number formal syntax <alpha-value>where <alpha-value> = <number> | <percentage> examples aligning text to a gradient this example creates a <div> block with a gradient background image.

symbols() - CSS: Cascading Style Sheets
numeric: the system interprets the given values as the successive units of a place-value numbering system.
... alphabetic: the system interprets the given values as the digits of an alphabetic numbering system, like a place-value numbering system but without 0.

var() - CSS: Cascading Style Sheets
var( <custom-property-name> , <declaration-value>?
... <declaration-value> the custom property's fallback value, which is used in case the custom property is invalid in the used context.

<abbr>: The Abbreviation element - HTML: Hypertext Markup Language
a few browsers not only add a dotted underline, but also put it in small caps; to avoid this styling, adding something like font-variant: none in the css takes care of this case.
... html <p>using <abbr>css</abbr>, you can style your abbreviations!</p> css abbr { font-variant: all-small-caps; } result providing an expansion adding a title attribute lets you provide an expansion or definition for the abbreviation or acronym.

<img>: The Image Embed element - HTML: Hypertext Markup Language
there are a number of situations in which a browser might not display images, such as: non-visual browsers (such as those used by people with visual impairments) the user chooses not to display images (saving bandwidth, privacy reasons) the image is invalid or an unsupported type in these cases, the browser may replace the image with the text in the element's alt attribute.
...setting this attribute to an empty string (alt="") indicates that this image is not a key part of the content (it’s decoration or a tracking pixel), and that non-visual browsers may omit it from rendering.

itemscope - HTML: Hypertext Markup Language
specifying the itemscope attribute for an element creates a new item, which results in a number of name-value pairs that are associated with the element.
...the item consists of a group of name-value pairs.

CSP: base-uri - HTTP
'nonce-<base64-value>' an allow-list for specific inline scripts using a cryptographic nonce (number used once).
... '<hash-algorithm>-<base64-value>' a sha256, sha384 or sha512 hash of scripts or styles.

CSP: child-src - HTTP
'nonce-<base64-value>' a whitelist for specific inline scripts using a cryptographic nonce (number used once).
... '<hash-algorithm>-<base64-value>' a sha256, sha384 or sha512 hash of scripts or styles.

CSP: connect-src - HTTP
'nonce-<base64-value>' an allow-list for specific inline scripts using a cryptographic nonce (number used once).
... '<hash-algorithm>-<base64-value>' a sha256, sha384 or sha512 hash of scripts or styles.

CSP: default-src - HTTP
'nonce-<base64-value>' an allow-list for specific inline scripts using a cryptographic nonce (number used once).
... '<hash-algorithm>-<base64-value>' a sha256, sha384 or sha512 hash of scripts or styles.

CSP: font-src - HTTP
'nonce-<base64-value>' a whitelist for specific inline scripts using a cryptographic nonce (number used once).
... '<hash-algorithm>-<base64-value>' a sha256, sha384 or sha512 hash of scripts or styles.

CSP: form-action - HTTP
'nonce-<base64-value>' an allow-list for specific inline scripts using a cryptographic nonce (number used once).
... '<hash-algorithm>-<base64-value>' a sha256, sha384 or sha512 hash of scripts or styles.

CSP: frame-src - HTTP
'nonce-<base64-value>' a whitelist for specific inline scripts using a cryptographic nonce (number used once).
... '<hash-algorithm>-<base64-value>' a sha256, sha384 or sha512 hash of scripts or styles.

CSP: img-src - HTTP
'nonce-<base64-value>' an allow-list for specific inline scripts using a cryptographic nonce (number used once).
... '<hash-algorithm>-<base64-value>' a sha256, sha384 or sha512 hash of scripts or styles.

CSP: manifest-src - HTTP
'nonce-<base64-value>' a whitelist for specific inline scripts using a cryptographic nonce (number used once).
... '<hash-algorithm>-<base64-value>' a sha256, sha384 or sha512 hash of scripts or styles.

CSP: media-src - HTTP
'nonce-<base64-value>' a whitelist for specific inline scripts using a cryptographic nonce (number used once).
... '<hash-algorithm>-<base64-value>' a sha256, sha384 or sha512 hash of scripts or styles.

CSP: navigate-to - HTTP
'nonce-<base64-value>' an allow-list for specific inline scripts using a cryptographic nonce (number used once).
... '<hash-algorithm>-<base64-value>' a sha256, sha384 or sha512 hash of scripts or styles.

CSP: object-src - HTTP
'nonce-<base64-value>' a whitelist for specific inline scripts using a cryptographic nonce (number used once).
... '<hash-algorithm>-<base64-value>' a sha256, sha384 or sha512 hash of scripts or styles.

CSP: prefetch-src - HTTP
'nonce-<base64-value>' an allow-list for specific inline scripts using a cryptographic nonce (number used once).
... '<hash-algorithm>-<base64-value>' a sha256, sha384 or sha512 hash of scripts or styles.

CSP: report-uri - HTTP
content-security-policy: default-src https:; report-uri /csp-violation-report-endpoint/ /csp-violation-report-endpoint/ could for example run a php something like the following that logs the json detailing the violation and, if the violation is the first one added to the log file, sends an email to an administrator: <?php // start configure $log_file = dirname(__file__) .
... '/csp-violations.log'; $log_file_size_limit = 1000000; // bytes - once exceeded no further entries are added $email_address = 'admin@example.com'; $email_subject = 'content-security-policy violation'; // end configuration $current_domain = preg_replace('/www\./i', '', $_server['server_name']); $email_subject = $email_subject .

CSP: script-src-attr - HTTP
'nonce-<base64-value>' an allow-list for specific inline scripts using a cryptographic nonce (number used once).
... '<hash-algorithm>-<base64-value>' a sha256, sha384 or sha512 hash of scripts or styles.

CSP: script-src-elem - HTTP
'nonce-<base64-value>' an allow-list for specific inline scripts using a cryptographic nonce (number used once).
... '<hash-algorithm>-<base64-value>' a sha256, sha384 or sha512 hash of scripts or styles.

CSP: script-src - HTTP
'nonce-<base64-value>' an allow-list for specific inline scripts using a cryptographic nonce (number used once).
... '<hash-algorithm>-<base64-value>' a sha256, sha384 or sha512 hash of scripts or styles.

CSP: style-src-attr - HTTP
'nonce-<base64-value>' an allow-list for specific inline scripts using a cryptographic nonce (number used once).
... '<hash-algorithm>-<base64-value>' a sha256, sha384 or sha512 hash of scripts or styles.

CSP: style-src-elem - HTTP
'nonce-<base64-value>' an allow-list for specific inline scripts using a cryptographic nonce (number used once).
... '<hash-algorithm>-<base64-value>' a sha256, sha384 or sha512 hash of scripts or styles.

CSP: style-src - HTTP
'nonce-<base64-value>' an allow-list for specific inline scripts using a cryptographic nonce (number used once).
... '<hash-algorithm>-<base64-value>' a sha256, sha384 or sha512 hash of scripts or styles.

CSP: worker-src - HTTP
'nonce-<base64-value>' a whitelist for specific inline scripts using a cryptographic nonce (number used once).
... '<hash-algorithm>-<base64-value>' a sha256, sha384 or sha512 hash of scripts or styles.

Content-Security-Policy-Report-Only - HTTP
content-security-policy-report-only: default-src https:; report-uri /csp-violation-report-endpoint/ if you still want to receive reporting, but also want to enforce a policy, use the content-security-policy header with the report-uri directive.
... content-security-policy: default-src https:; report-uri /csp-violation-report-endpoint/ violation report syntax the report json object contains the following data: blocked-uri the uri of the resource that was blocked from loading by the content security policy.

Digest - HTTP
header type response header forbidden header name no syntax digest: <digest-algorithm>=<digest-value> digest: <digest-algorithm>=<digest-value>,<digest-algorithm>=<digest-value> directives <digest-algorithm> supported digest algorithms are defined in rfc 3230 and rfc 5843, and include sha-256 and sha-512.
... <digest-value> the result of applying the digest algorithm to the resource representation and encoding the result.

Set-Cookie2 - HTTP
header type response header forbidden header name no syntax set-cookie2: <cookie-name>=<cookie-value> set-cookie2: <cookie-name>=<cookie-value>; comment=<value> set-cookie2: <cookie-name>=<cookie-value>; commenturl=<http-url> set-cookie2: <cookie-name>=<cookie-value>; discard set-cookie2: <cookie-name>=<cookie-value>; domain=<domain-value> set-cookie2: <cookie-name>=<cookie-value>; max-age=<non-zero-digit> set-cookie2: <cookie-name>=<cookie-value>; path=<path-value> set-cookie2: <cookie-name>=<cookie-value>; port=<port-number> set-cookie2: <cookie-name>=<cookie-value>; secure set...
...-cookie2: <cookie-name>=<cookie-value>; version=<version-number> // multiple directives are also possible, for example: set-cookie2: <cookie-name>=<cookie-value>; domain=<domain-value>; secure // multiple cookies are seperated by a comma set-cookie2: <cookie-name>=<cookie-value>, <cookie-name>=<cookie-value>, ...

User-Agent - HTTP
header type request header forbidden header name no syntax user-agent: <product> / <product-version> <comment> common format for web browsers: user-agent: mozilla/5.0 (<system-information>) <platform> (<platform-details>) <extensions> directives <product> a product identifier — its name or development codename.
... <product-version> version number of the product.

Via - HTTP
header type general header forbidden header name yes syntax via: [ <protocol-name> "/" ] <protocol-version> <host> [ ":" <port> ] or via: [ <protocol-name> "/" ] <protocol-version> <pseudonym> directives <protocol-name> optional.
... <protocol-version> the version of the protocol used, such as "1.1".

Want-Digest - HTTP
header type general header forbidden header name no syntax want-digest: <digest-algorithm> // multiple algorithms, weighted with the quality value syntax: want-digest: <digest-algorithm><q-value>,<digest-algorithm><q-value> directives <digest-algorithm> supported digest algorithms are defined in rfc 3230 and rfc 5843, and include sha-256 and sha-512.
... <q-value> the quality value to apply to that option.

A re-introduction to JavaScript (JS tutorial) - JavaScript
they have methods as well that allow you to manipulate the string and access information about the string: 'hello'.charat(0); // "h" 'hello, world'.replace('world', 'mars'); // "hello, mars" 'hello'.touppercase(); // "hello" other types javascript distinguishes between null, which is a value that indicates a deliberate non-value (and is only accessible through the null keyword), and undefined, which is a value of type undefined that indicates an uninitialized variable — that is, a value hasn't even been assigned yet.
...you can have expressions in both the switch part and the cases if you like; comparisons take place between the two using the === operator: switch (1 + 3) { case 2 + 2: yay(); break; default: neverhappens(); } objects javascript objects can be thought of as simple collections of name-value pairs.

Map() constructor - JavaScript
syntax new map([iterable]) parameters iterable an array or other iterable object whose elements are key-value pairs.
... (for example, arrays with two elements, such as [[ 1, 'one' ],[ 2, 'two' ]].) each key-value pair is added to the new map.

Object.entries() - JavaScript
polyfill to add compatible object.entries() support in older environments that do not natively support it, you can use any of the following: a demonstration implementation of object.entries in the tc39/proposal-object-values-entries (if you don't need any support for ie); a polyfill in the es-shims/object.entries repositories; or, you can use the simple, ready-to-deploy polyfill listed below: if (!object.entries) { object.entries = function( obj ){ var ownprops = object.keys( obj ), i = ownprops.length, resarray = new array(i); // preallocate the array while (i--) resarray[i] ...
...{ value() { return this.foo; } } }); myobj.foo = 'bar'; console.log(object.entries(myobj)); // [ ['foo', 'bar'] ] // non-object argument will be coerced to an object console.log(object.entries('foo')); // [ ['0', 'f'], ['1', 'o'], ['2', 'o'] ] // returns an empty array for any primitive type, since primitives have no own properties console.log(object.entries(100)); // [ ] // iterate through key-value gracefully const obj = { a: 5, b: 7, c: 9 }; for (const [key, value] of object.entries(obj)) { console.log(`${key} ${value}`); // "a 5", "b 7", "c 9" } // or, using array extras object.entries(obj).foreach(([key, value]) => { console.log(`${key} ${value}`); // "a 5", "b 7", "c 9" }); converting an object to a map the new map() constructor accepts an iterable of entries.

Object.fromEntries() - JavaScript
the object.fromentries() method transforms a list of key-value pairs into an object.
... description the object.fromentries() method takes a list of key-value pairs and returns a new object whose properties are given by those entries.

WeakMap() constructor - JavaScript
syntax new weakmap([iterable]) parameters iterable iterable is an array or other iterable object whose elements are key-value pairs (2-element arrays).
... each key-value pair will be added to the new weakmap.

Web video codec guide - Web media technologies
each frame of video is presented by applying a set of changes to the currently-visible frame.
... internet explorer opera safari avc/h.264 support 4 12 35[1] 9 25 3.2 container support 3gp, mp4, webm rtp / webrtc compatible yes supporting/maintaining organization mpeg / itu specification https://mpeg.chiariglione.org/standards/mpeg-4/advanced-video-coding https://www.itu.int/rec/t-rec-h.264 licensing proprietary with numerous patents.

flood-opacity - SVG: Scalable Vector Graphics
h="200" height="200"/> </filter> <filter id="flood2"> <feflood flood-color="seagreen" flood-opacity="0.3" x="0" y="0" width="200" height="200"/> </filter> <rect x="0" y="0" width="200" height="200" style="filter: url(#flood1);" /> <rect x="0" y="0" width="200" height="200" style="filter: url(#flood2); transform: translatex(220px);" /> </svg> usage notes value <alpha-value> initial value 1 animatable yes <alpha-value> a number or percentage indicating the opacity value to use across the current filter primitive subregion.
... working draft aligned the value to the css <alpha-value> value.

SVG Attribute reference - SVG: Scalable Vector Graphics
contentstyletype cursor cx cy d d decelerate descent diffuseconstant direction display divisor dominant-baseline dur dx dy e edgemode elevation enable-background end exponent externalresourcesrequired f fill fill-opacity fill-rule filter filterres filterunits flood-color flood-opacity font-family font-size font-size-adjust font-stretch font-style font-variant font-weight format from fr fx fy g g1 g2 glyph-name glyph-orientation-horizontal glyph-orientation-vertical glyphref gradienttransform gradientunits h hanging height href hreflang horiz-adv-x horiz-origin-x i id ideographic image-rendering in in2 intercept k k k1 k2 k3 k4 kernelmatrix kernelunitlength kerning keypoints keysplines keytimes...
... alignment-baseline, baseline-shift, clip, clip-path, clip-rule, color, color-interpolation, color-interpolation-filters, color-profile, color-rendering, cursor, direction, display, dominant-baseline, enable-background, fill, fill-opacity, fill-rule, filter, flood-color, flood-opacity, font-family, font-size, font-size-adjust, font-stretch, font-style, font-variant, font-weight, glyph-orientation-horizontal, glyph-orientation-vertical, image-rendering, kerning, letter-spacing, lighting-color, marker-end, marker-mid, marker-start, mask, opacity, overflow, pointer-events, shape-rendering, stop-color, stop-opacity, stroke, stroke-dasharray, stroke-dashoffset, stroke-linecap, stroke-linejoin, stroke-miterlimit, stroke-opacity, stroke-width, text-anchor, t...

<text> - SVG: Scalable Vector Graphics
value type: <length>|<percentage> ; default value: none; animatable: yes global attributes core attributes most notably: id, tabindex styling attributes class, style, font-family, font-size, font-size-adjust, font-stretch, font-style, font-variant, font-weight conditional processing attributes most notably: requiredextensions, systemlanguage event attributes global event attributes, graphical event attributes presentation attributes most notably: clip-path, clip-rule, color, color-interpolation, color-rendering, cursor, display, dominant-baseline, fill, fill-opacity, fill-rule, filter, mask, opacity, pointer-events, shape-rende...
...bbed, aria-haspopup, aria-hidden, aria-invalid, aria-keyshortcuts, aria-label, aria-labelledby, aria-level, aria-live, aria-modal, aria-multiline, aria-multiselectable, aria-orientation, aria-owns, aria-placeholder, aria-posinset, aria-pressed, aria-readonly, aria-relevant, aria-required, aria-roledescription, aria-rowcount, aria-rowindex, aria-rowspan, aria-selected, aria-setsize, aria-sort, aria-valuemax, aria-valuemin, aria-valuenow, aria-valuetext, role usage notes categoriesgraphics element, text content elementpermitted contentcharacter data and any number of the following elements, in any order:animation elementsdescriptive elementstext content elements<a> specifications specification status comment scalable vector graphics (svg) 2the definition of '<t...

SVG documentation index - SVG: Scalable Vector Graphics
84 font-variant svg, svg attribute the font-variant attribute indicates whether the text is to be rendered using variations of the fontʼs glyphs.
... 95 glyph-orientation-vertical deprecated, svg, svg attribute the glyph-orientation-vertical attribute affects the amount that hte current text position advances as each glyph is rendered.

SVG 1.1 Support in Firefox - SVG: Scalable Vector Graphics
various presentation attributes don't work (alignment-baseline, baseline-shift, dominant-baseline, kerning, letter-spacing, word-spacing, writing-mode, glyph-orientation-horizontal, glyph-orientation-vertical) recently implemented presentation attributes: direction, unicode-bidi, font-variant, text-decoration svgtextelement recently imlemented bindings: selectsubstring recently implemented attributes: textlength, lengthadjust tspan implemented.
... various presentation attributes don't work (alignment-baseline, baseline-shift, dominant-baseline, kerning, letter-spacing, word-spacing, writing-mode, glyph-orientation-horizontal, glyph-orientation-vertical) recently implemented presentation attributes: direction, unicode-bidi, font-variant, text-decoration svgtspanelement recently implemented bindings: selectsubstring recently implemented attributes: textlength, lengthadjust tref this feature, present in early draft of the spec, has been removed from it and is therefor not implemented (bug 273171).

<xsl:number> - XSLT: Extensible Stylesheet Language Transformations
syntax <xsl:number count=expression level="single" | "multiple" | "any" from=expression value=expression format=format-string lang=xml:lang-code letter-value="alphabetic" | "traditional" grouping-separator=character grouping-size=number /> required attributes none.
... letter-value disambiguates between numbering sequences that use letters.

<xsl:stylesheet> - XSLT: Extensible Stylesheet Language Transformations
default-validation defines the default value of the validation attribute of all relevant instructions appearing within its scope.
... xslt 2.0 added the attributes xpath-default-namespace, default-validation, default-collation, and input-type-annotations and made all attributes except version optional.

Converting WebAssembly text format to wasm - WebAssembly
however, you can view it using the wat2wasm tool’s -v option.
... try this: wat2wasm simple.wat -v this will give you an output in your terminal in the following way: ...

Interacting with page scripts - Archive of obsolete content
expose objects to page scripts until firefox 30, you could use unsafewindow to perform the reverse procedure, and make objects defined in content scripts available to page scripts: // content-script.js unsafewindow.contentscriptobject = {"greeting" : "hello from add-on"}; // page-script.js var button = document.getelementbyid("show-content-script-var"); button.addeventlistener("click", function() { // access object defined by content script console.log(window.contentscriptobject.greeting); // "hello from add-on" }, false); after firefox 30, you can still do this for primitive values, but can no longer do it for objects.

hotkeys - Archive of obsolete content
the following commonly used hotkey combinations will not pass amo review: accel-z, accel-c, accel-x, accel-v or accel-q if you choose to use a key combination that's already defined, choose one which makes sense for the operation it will perform.

Localization - Archive of obsolete content
>hello!</blink> localizing element attributes this feature is new in firefox 39 you can localize certain attributes of elements with an l10n-id by setting its value with l10n-id.attributename in the properties file like: hello_id.accesskey= h the following attributes are supported: accesskey alt label title placeholder further the localization of the aria attributes aria-label, aria-valuetext and aria-moz-hint are supported with the same aliases as on firefox os: arialabel ariavaluetext ariamozhint using localized strings in javascript to reference localized strings from your main add-on code, you do this: var _ = require("sdk/l10n").get; console.log(_("hello_id")); assigning to "_" in particular is not required, but is a convention from the gettext tools and will ma...

Code snippets - Archive of obsolete content
ser code (firefox/seamonkey) basic operations, such as page loading, with the tabbed browser, which is the heart of mozilla's browser applications cookies reading, writing, modifying, and removing cookies page loading code used to load pages, reload pages, and listen for page loads interaction between privileged and non-privileged code how to communicate from extensions to websites and vice-versa.

Creating custom Firefox extensions with the Mozilla build system - Archive of obsolete content
so here's your basic, plain-vanilla top-level makefile (makefile.in in the main extension directory): depth = ../..

Enhanced Extension Installation - Archive of obsolete content
<profile>/extensions.rdf -visible items this file contains non-startup and compatibility metadata for extensions that are visible to the user, whether they are enabled or disabled.

Chapter 6: Firefox extensions and XUL applications - Archive of obsolete content
just looking at initwithpath, we can see how the path-validation process works.

Setting Up a Development Environment - Archive of obsolete content
after setting up make, you should be able to open a command line window, run "make -ver", and get the installed version of make as output.

Signing an XPI - Archive of obsolete content
to find the name, in mozilla firefox navigate to the certificate manager (described in step 11), choose your certificates, select the new certificate, press view, choose details and look at the first entry in the certificate fields tree-view.

Updating addons broken by private browsing changes - Archive of obsolete content
oadmanager nsidownload nsihttpauthmanager nsistricttransportsecurityservice ff 20: nsiprivatebrowsingservice nsirecentbadcertservice furthermore, if your code uses any of these common chrome apis: ff 19: saveurl saveinternal openlinkin ff 20: openbrowserwindow gprivatebrowsingui finally, if your code watches for any of these observer notifications: private-browsing private-browsing-cancel-vote private-browsing-change-granted private-browsing-transition-complete then your addon will require updating to correctly support the new per-window private browser feature in firefox 20 (and will require updating to work correctly in releases of firefox since the ones listed).

Source code directories overview - Archive of obsolete content
the "c" runtime library contains basic non-visual c functions to allocate and deallocate memory, get the time and date, read and write files, handle threads and handling and compare strings across all platforms.

Using XML Data Islands in Mozilla - Archive of obsolete content
this feature is not based on multi-vendor web standards and is not supported in firefox (or other non-ie browsers).

Compiling The npruntime Sample Plugin in Visual Studio - Archive of obsolete content
should either be like "application/x-vnd-yourorganization-yourfiletype" or be officially registered with iana (unlikely) or be a standard type (e.g.

Creating a hybrid CD - Archive of obsolete content
mkhybrid -o ~/party.iso -r -j -hfs -v mozilla.party -map ~/hfsmapping ~/party/ cdrecord -v speed=2 dev=0,6,0 ~/party.iso its also handy to be able to mount an image file to test it.

In-Depth - Archive of obsolete content
tfield, menulist-button, menulist, menulist-text, progressbar, progresschunk, radio-container, radio, resizer, resizerpanel, separator, scrollbar, statusbar, statusbarpanel, toolbarbutton, toolbox, toolbar, treeheadercell, treeheadersortarrow, treeview, treeitem, treetwisty, treetwistyopen, tooltip, textfield, tabpanels, tab, tab-left-edge, tab-right-edge, scrollbartrack-horizontal, scrollbartrack-vertical, scrollbarthumb-vertical, scrollbarthumb-horizontal, scrollbarbutton-right, scrollbarbutton-down, scrollbarbutton-left, scrollbarbutton-up, scrollbargripper-vertical, scrollbargripper-horizontal -moz-border-bottom-colors defines a series of colours.

Layout System Overview - Archive of obsolete content
the idea of supporting a non-visual presentation is interesting.

New Skin Notes - Archive of obsolete content
this is not what user expects (well, i don't expect sites to style visited and non-visited links the same), and it's false that other documentation sites do this (i just checked apple's and microsoft's sites).

Static Analysis for Windows Code under Linux - Archive of obsolete content
ac_add_options --enable-debug ac_add_options --disable-optimize ac_add_options --disable-tests ac_add_options --disable-embedding-tests ac_add_options --disable-installer ac_add_options --disable-accessibility ac_add_options --disable-vista-sdk-requirements ac_add_options --disable-updater #change this to where your libidl-config file locate.

Actionscript Performance Tests - Archive of obsolete content
interp) $ ./runtests.py --vmargs="-dinterp" sunspider/*.as test avm metric sunspider/access-binary-trees.as 690 time sunspider/access-fannkuch.as 467 time ...

Using cross commit - Archive of obsolete content
--verbose=[0|1] makes the script output more text as it runs.

Venkman Internals - Archive of obsolete content
this method is set into jsdiscripthook.onscriptcreated venkman-views.js views are the panels shown within the venkman window.

Venkman Introduction - Archive of obsolete content
you can also start the browser with the -venkman command line option, which launches venkman initially instead of an application front end.

Reading from Files - Archive of obsolete content
the read and readstring methods may not be suitable for this due to zero-values.

International characters in XUL JavaScript - Archive of obsolete content
cross-version compatibility if you want the same code to work in both gecko 1.8 and earlier versions, you must limit yourself to ascii.

Bindings - Archive of obsolete content
/t/palace.jpg, ?title = 'palace from above') (?start = http://www.xulplanet.com/rdf/myphotos, ?photo = http://www.xulplanet.com/ndeakin/images/t/canal.jpg, ?title = 'canal') (?start = http://www.xulplanet.com/rdf/myphotos, ?photo = http://www.xulplanet.com/ndeakin/images/t/obelisk.jpg, ?title = 'obelisk') the second triple will add a ?description for the first photo, adding a fourth variable-value pair to the existing data.

Result Generation - Archive of obsolete content
so, to summarize: start out with a one possible result as the seed iterate over the results determined so far and augment them with additional data add any new possible results remove any rejected results repeat steps 2 to 4 for each query statement once done, all remaining results become matches each possible result is made up of a set of variable-value pairs.

stringbundle - Archive of obsolete content
a property file is a list of property key-value pairs each on a separate line.

Mozilla release FAQ - Archive of obsolete content
on gcc, try gcc -v (rest of command line).

2006-10-13 - Archive of obsolete content
he has disabled xft and has tried looking at related postings by benjamin smedberg gcc-40-workarounds and gcc-and-visibility-one-step-forward-hit-a-brick-wall announcements please help us test the new tinderbox and bonsai server installations paul reed announced that they are setting up a new installation of the tinderbox and bonsai servers onto new, supported hardware.

-ms-filter - Archive of obsolete content
the following types: filters transitions procedural surfaces formal syntax filter: <-ms-filter-function>+ -ms-filter: [ "'" <-ms-filter-function># "'" ] | [ '"' <-ms-filter-function># '"' ] where <-ms-filter-function> = <-ms-filter-function-progid> | <-ms-filter-function-legacy> where <-ms-filter-function-progid> = 'progid:' [ <ident-token> '.' ]* [ <ident-token> | <function-token> <any-value> ')' ] <-ms-filter-function-legacy> = <ident-token> | <function-token> <any-value> ')' the <string> contains the list of filters, transitions, and procedural surfaces.

CSS - Archive of obsolete content
a slider control is one possible representation of <input type="range">.::-ms-valuethe ::-ms-value css pseudo-element is a microsoft extension that applies rules to the value of a text or password <input> control or the content of a <select> control.@mediaparent for archived media features.azimuthin combination with elevation, the azimuth css property enables different audio sources to be positioned spatially for aural presentation.

New in JavaScript 1.7 - Archive of obsolete content
in html or xul code, use: <script type="application/javascript;version=1.7"></script> when using the javascript shell, you need to set the version you wish to use using the -version 170 switch on the command line or using the version() function: version(170); the features that require the use of the new keywords "yield" and "let" require you to specify version 1.7 because existing code might use those keywords as variable or function names.

New in JavaScript 1.8 - Archive of obsolete content
however, that made it impossible to destructure the values of an array - that were arrays (i.e., when an iterator returns an array of the current key-value pair).

LiveConnect - Archive of obsolete content
liveconnect provides javascript with the ability to call methods of java classes and vice-versa using the existing java infrastructure.

Styling the Amazing Netscape Fish Cam Page - Archive of obsolete content
in order to make the fish cam page as agile as the fish themselves, it was necessary to strip out all of the tables, font tags, and other non-validating stuff.

XForms Custom Controls Examples - Archive of obsolete content
<body> var img = document.getanonymouselementbyattribute(this, "anonid", "content"); img.setattribute("src", this.stringvalue); return true; </body> </method> </implementation> </binding> output showing xhtml <binding id="output-xhtml" extends="chrome://xforms/content/xforms-xhtml.xml#xformswidget-output"> <content> <children includes="label"/> <xhtml:div class="xf-value" anonid="content"></xhtml:div> <children/> </content> <implementation implements="nsixformsuiwidget"> <field name="_domparser">null</field> <property name="domparser" readonly="true"> <getter> if (!this._domparser) this._domparser = new domparser(); return this._domparser; </getter> </property> <method name="refresh"> <body> // get new value, ...

Mozilla XForms Specials - Archive of obsolete content
instead you will have to use the following normal classes instead: xf-value xf-repeat-item xf-repeat-index for example, to target the value element of an input control use: @namespace xf url("http://www.w3.org/2002/xforms"); xf|input .xf-value { ...

RDF in Mozilla FAQ - Archive of obsolete content
<template> <rule> <query>...</query> <binding>...</binding> <action> <text value="?some-variable" /> </action> </rule> </template> the above template will create a content model that runs a series of text nodes together.

Windows Media in Netscape - Archive of obsolete content
the embedded-audio-video.html shows both scripting the control and callbacks.

Building up a basic demo with A-Frame - Game development
add this just before the closing </a-scene> element: <a-camera position="0 1 4" cursor-visible="true" cursor-scale="2" cursor-color="#0095dd" cursor-opacity="0.5"> </a-camera> we've also defined a cursor for the given camera, using the cursor-* attributes (by default it is invisible.) — we've set its scale so it will more easily visible, its color, and some opacity so it won't completely covering the objects behind it.

Tiles and tilemaps overview - Game development
square tiles allow for two perspectives: top-down (like many rpg's or strategy games like warcraft 2 or final fantasy's world view.) side-view (like platformers such as super mario bros.) static tilemaps a tilemap can either fit into the visible screen area screen or be larger.

Visual typescript game engine - Game development
already implemented: -video chat webrtc (sip) chat and data communication.

Client hints - MDN Web Docs Glossary: Definitions of Web-related terms
accept-ch: dpr, width, viewport-width, downlink and / or <meta http-equiv="accept-ch" content="dpr, width, viewport-width, downlink"> when a client receives the accept-ch header, if supported, it appends client hint headers that match the advertised field-values.

JSON - MDN Web Docs Glossary: Definitions of Web-related terms
json can represent numbers, booleans, strings, null, arrays (ordered sequences of values), and objects (string-value mappings) made up of these values (or of other arrays and objects).

Ligature - MDN Web Docs Glossary: Definitions of Web-related terms
you can implement ligatures in your webpage with font-variant-ligatures.

Media - MDN Web Docs Glossary: Definitions of Web-related terms
media (audio-visual presentation) the term media (more accurately, multimedia) refers to audio, video, or combined audio-visual material such as music, recorded speech, movies, tv shows, or any other form of content that is presented over a period of time.

Modem - MDN Web Docs Glossary: Definitions of Web-related terms
a modem ("modulator-demodulator") is a device that converts digital information to analog signals and vice-versa, for sending data through networks.

Parameter - MDN Web Docs Glossary: Definitions of Web-related terms
depending on programming language, input parameters can be passed several ways (e.g., call-by-value, call-by-address, call-by-reference).

Screen reader - MDN Web Docs Glossary: Definitions of Web-related terms
screen readers are software applications that attempt to convey what is seen on a screen display in a non-visual way, usually as text to speech, but also into braille or sound icons.

Speed index - MDN Web Docs Glossary: Definitions of Web-related terms
the overall score, the above the fold metric, is a sum of the individual 10 times per second intervals of the percent of the screen that is not-visually complete.

MDN Web Docs Glossary: Definitions of Web-related terms
layout viewport lazy load lgpl ligature local scope local variable locale localization long task loop lossless compression lossy compression ltr (left to right) m main axis main thread markup mathml media media (audio-visual presentation) media (css) metadata method microsoft edge microsoft internet explorer middleware mime mime type minification mitm mixin mobile first modem modern web apps modularity mozilla firefox mutable mvc n ...

CSS and JavaScript accessibility best practices - Learn web development
as an example, we've written a quick and dirty client-side form validation example — see form-validation.html (also see the demo live).

HTML: A good basis for accessibility - Learn web development
summary you should now be well-versed in writing accessible html for most occasions.

HTML: A good basis for accessibility - Learn web development
summary you should now be well-versed in writing accessible html for most occasions.

Backgrounds and borders - Learn web development
t; background-position: top center; } and lengths, and percentages: .box { background-image: url(star.png); background-repeat: no-repeat; background-position: 20px 10%; } you can also mix keyword values with lengths or percentages, for example: .box { background-image: url(star.png); background-repeat: no-repeat; background-position: top 20px; } finally, you can also use a 4-value syntax in order to indicate a distance from certain edges of the box — the length unit, in this case, is an offset from the value that precedes it.

Pseudo-classes and pseudo-elements - Learn web development
:focus-visible matches when an element has focus and the focus should be visible to the user.

Web fonts - Learn web development
note: you can also specify particular font-variant and font-stretch values for your web fonts.

How do you upload your files to a web server? - Learn web development
a basic command looks like so: rsync [-options] source user@x.x.x.x:destination -options is a dash followed by a one or more letters, for example -v for verbose error messages, and -b to make backups.

How do you set up a local testing server? - Learn web development
to check python is installed, enter the following command: python -v # or you might have the py command available, # in which case try py -v this should return a version number.

The HTML5 input types - Learn web development
the following screenshot taken on firefox for macos provides an example: and here is a live example for you to try out: the value returned is always a lowercase 6-value hexidecimal color.

HTML forms in legacy browsers - Learn web development
here is an example: modernizr.load({ // this tests if your browser supports the html5 form validation api test : modernizr.formvalidation, // if the browser does not support it, the following polyfill is loaded nope : form-validation-api-polyfill.js, // in any case, your core app file that depends on that api is loaded both : app.js, // once both files are loaded, this function is called in order to initialize the app.

UI pseudo-classes - Learn web development
the :focus-visible pseudo-class matches focused elements that received focus via keyboard interaction (rather than touch or mouse) — useful if you want to show a different style for keyboard focus compared to mouse (or other) focus.

Tips for authoring fast-loading HTML pages - Learn web development
do not require your content to appear pixel-perfect in all browsers, especially not in down-version browsers.

Define terms with HTML - Learn web development
how to build a description list description lists are just what they claim to be: a list of terms and their matching descriptions (e.g., definition lists, dictionary entries, faqs, and key-value pairs).

Index - Learn web development
7 html: a good basis for accessibility at, accessibility, article, beginner, buttons, codingscripting, forms, html, learn, links, a11y, assistive technology, keyboard, screenreader, semantics you should now be well-versed in writing accessible html for most occasions.

Multimedia: Images - Learn web development
<picture> <source type="video/mp4" src="giphy.mp4"> <source type="image/webp" src="giphy.webp"> <img src="giphy.gif"> </picture> serving the optimal size in image delivery the "one size fits all" approach will not yield the best results, meaning that for smaller screens you would want to serve images with smaller resolution and vis-versa for larger screens.

Introduction to the server side - Learn web development
the request includes a url identifying the affected resource, a method that defines the required action (for example to get, delete, or post the resource), and may include additional information encoded in url parameters (the field-value pairs sent via a query string), as post data (data sent by the http post method), or in associated cookies.

Getting started with Svelte - Learn web development
highly interactive pages or complex visualizations: if you are building data-visualizations that need to display a large number of dom elements, the performance gains that come from a framework with no runtime overhead will ensure that user interactions are snappy and responsive.

Strategies for carrying out testing - Learn web development
you need to treat this virtual operating system installation just like you would any real installation — for example, as well as installing the browsers you want to test, install an anti-virus program to protect it from viruses.

Gecko info for Windows accessibility vendors
if there is no msaa node for a dom node, or vice-versa, queryservice() will return null.

Software accessibility: Where are we today?
t-to-speech, and which allows a blind person to use the keyboard to simulate mouse actions alternate input devices, which allow people with physical disabilities to use alternatives to a keyboard and mouse voice recognition software, which allows a person to simulate typing on a keyboard or selecting with a mouse by speaking into the computer screen magnification software, which allows a low-vision computer user to more easily read portions of the screen comprehension software, which allows a dyslexic or learning disabled computer user to see and hear text as it is manipulated on the computer screen in fact, the entire adaptive technology industry has grown up around these issues.

How Mozilla's build system works
make echo-variable-static_dirs show the list of static source directories to iterate over, as determined by the tier list.

The Firefox codebase: CSS Guidelines
never mix custom text colors with a system background color and vice-versa.

Displaying Places information using views
views are one component of the places model-view-controller design.

Gecko SDK
for gecko versions 2.0 and higher, you must recompile your component for each release as cross-version compatibility is no longer supported.

HTTP Cache
is usable containing meta data and data of the entry call to cacheentry::invokecallbacks cacheentry::onhandleclosed (entry atomic): called when any consumer throws the cache entry away if the handle is not the handle given to the current writer, then exit state == writing: the writer failed to call metadataready on the entry - state = empty state == revalidating: the writer failed the re-validation process and failed to call setvalid on the entry - state = ready call to cacheentry::invokecallbacks all consumers release the reference: the entry may now be purged (removed) from memory when found expired or least used on overrun of the memory pool limit when this is a disk cache entry, its cached data chunks are released from memory and only meta data is kept intermediate mem...

How to get a stacktrace with WinDbg
(again, press enter after each command.) ~* kp !analyze -v -f lm after these steps are completed, find the file c:\temp\firefox-debug-(today's date).txt on your hard drive.

IPDL Tutorial
each incoming message is a pure-virtual c++ method which must be implemented: class ppluginparent { public: bool sendinit(const nscstring& pluginpath) { // generated code to send an init() message } bool sendshutdown() { // generated code to send a shutdown() message } protected: /** * a subclass of ppluginparent must implement this method to handle the ready() message.

Introduction to Layout in Mozilla
may not be directly manipulated detailed walk-through setting up content model construction frame construction style resolution reflow painting setting up assume basic knowledge of embedding and network apis (doc shell, streams) content dll auto-registers a document loader factory (dlf) @mozilla.org/content-viewer-factory/view;1?type=text/html all mime types mapped to the same class, nscontentdlf nsdocshell receives inbound content via nsdsuricontentlistener invokes nsidlf::createinstance, passes mime type to dlf nscontentdlf creates a nshtmldocument object, invokes startdocumentload.

Http.jsm
in case an array of parameters is given, it will be treated as an array of key-value pairs.

Following the Android Toasts Tutorial from a JNI Perspective
let's declare these methods in the third argument of loadclass we add a key-value pair, with the key being static_methods and methods and the value being an array.

L10n Checks
verbose level in all modes you can set the verbose level, e.g.: check-l10n-completeness --verbose 5 full_json suite/locales/l10n.ini ../l10n/ de there are six levels.

Localization prerequisites
let’s try our entry points: $ hg --version mercurial distributed scm (version 1.3.1) copyright (c) 2005-2009 matt mackall <mpm@selenic.com> and others this is free software; see the source for copying conditions.

Release phase
if you don't see this message, try running the same command in a more verbose mode (with the debugging information): $ ssh -vvv hg.mozilla.org this should tell you why your connection is not succeeding.

gettext
# #, fuzzy msgid "" msgstr "" "project-id-version: package version\n" "report-msgid-bugs-to: \n" "pot-creation-date: 2009-09-28 16:18+0200\n" "po-revision-date: year-mo-da ho:mi+zone\n" "last-translator: full name <email@address>\n" "language-team: language <ll@li.org>\n" "mime-version: 1.0\n" "content-type: text/plain; charset=charset\n" "content-transfer-encoding: 8bit\n" "plural-forms: nplurals=integer; plural=expression;\n" #.

Mozilla MathML Status
altimg, altimg-width, altimg-height, altimg-valign, alttext accepted, but do not have any effect on the rendering.

Mozilla Web Developer FAQ
since non-validating xml processors are not required to support externally defined character entities (other than the five pre-defined ones), the use of externally defined character entities (other than the five pre-defined ones) is inherently unsafe in xml documents intended for the web.

Mozilla Style System
nsistylerule an nsistylerule is animmutable set of css property-value pairs.

Leak-hunting strategies and tips
(or allocations?) all tier 1 platforms build with --enable-trace-malloc leak tools for simple objects and summary statistics tracemalloc all allocations all tier 1 platforms build with --enable-trace-malloc valgrind all allocations mac, linux build with --enable-valgrind and some other options lsan all allocations mac, linux any build apple tools ?

Profiling with Concurrency Visualizer - Performance
here are some scripts that you can be used for manipulating the profiles that have been exported to csv: https://github.com/jrmuizel/concurrency-visualizer-scripts ...

Profiling with Xperf
for 64-bit windows 7 or vista, you'll need to do a registry tweak and then restart to enable stack walking: reg add "hklm\system\currentcontrolset\control\session manager\memory management" -v disablepagingexecutive -d 0x1 -t reg_dword -f symbol server setup with the latest versions of the windows performance toolkit, you can modify the symbol path directly from within the program via the trace menu.

Midas
user_pref("capability.policy.policynames", "allowclipboard"); user_pref("capability.policy.allowclipboard.clipboard.paste", "allaccess"); see: more about security preferences note: the shortcut key will automatically trigger this command (typically accel-v) with or without the signed js or any code on the page to handle it.

PL_CompareStrings
pl_comparestrings can be used as the comparator function for string-valued key or entry value.

PL_CompareValues
pl_comparevalues can be used as the comparator function for integer or pointer-valued key or entry value.

PRBool
x : y, and so on to test boolean values, just as you would c int-valued conditions.

PRSockOption
enumeration type used in the option field of prsocketoptiondata to form the name portion of a name-value pair.

PRSocketOptionData
description prsocketoptiondata is a name-value pair for a socket option.

NSS 3.12.4 release notes
currently nss 3.12.4 is in the "review pending" state in the fips 140-2 pre-validation list at http://csrc.nist.gov/groups/stm/cmvp/documents/140-1/140inprocess.pdf added crl distribution point support (see cert.h).

NSS_3.12_release_notes.html
bltest bug 229335: remove certificates that expired in august 2004 from tree bug 346551: init secitem dertemp in crmf_encode_popoprivkey bug 395080: double backslash in sysdir filenames causes problems on os/2 bug 341371: certutil lacks a way to request a certificate with an existing key bug 382292: add support for camellia to cmd/symkeyutil bug 385642: add additional cert usage(s) for certutil's -v -u option bug 175741: strict aliasing bugs in mozilla/dbm bug 210584: cert_asciitoname doesn't accept all valid values bug 298540: vfychain usage option should be improved and documented bug 323570: make dbck debug mode work with softoken bug 371470: vfychain needs option to verify for specific date bug 387621: certutil's random noise generator isn't very efficient bug 390185: signtool error mess...

NSS 3.14 release notes
the old options to disable ssl 2, ssl 3 and tls 1.0 have been removed and replaced with a new -v option that specifies the enabled range of protocol versions (see usage output of those tools).

NSS 3.16.2 release notes
the certutil commands supports generic certificate extensions, by loading binary data from files, which have been prepared using external tools, or which have been extracted and dumped to file from other existing certificates: --dump-ext-val oid --extgeneric oid:critical-flag:filename[,oid:critical-flag:filename]...

NSS 3.35 release notes
(conversely, nss will never synchronize data from sql to dbm format.) additional information can be found on this fedora linux project page: https://fedoraproject.org/wiki/changes/nssdefaultfileformatsql added formally verified implementations of non-vectorized chacha20 and non-vectorized poly1305 64-bit.

NSS 3.44.1 release notes
342 - more thorough input checking (cve-2019-11729) 1540541 - don't unnecessarily strip leading 0's from key material during pkcs11 import (cve-2019-11719) 1515236 - add a sslkeylogfile enable/disable flag at build.sh 1473806 - fix seckey_converttopublickey handling of non-rsa keys 1546477 - updates to testing for fips validation 1552208 - prohibit use of rsassa-pkcs1-v1_5 algorithms in tls 1.3 (cve-2019-11727) 1551041 - unbreak build on gcc < 4.3 big-endian compatibility nss 3.44.1 shared libraries are backward compatible with all older nss 3.x shared libraries.

NSS 3.45 release notes
bug 1552374 - cn = certinomis - root ca sha-256 fingerprint: 2a99f5bc1174b73cbb1d620884e01c34e51ccb3978da125f0e33268883bf4158 bugs fixed in nss 3.45 bug 1540541 - don't unnecessarily strip leading 0's from key material during pkcs11 import (cve-2019-11719) bug 1515342 - more thorough input checking (cve-2019-11729) bug 1552208 - prohibit use of rsassa-pkcs1-v1_5 algorithms in tls 1.3 (cve-2019-11727) bug 1227090 - fix a potential divide-by-zero in makepfromqandseed from lib/freebl/pqg.c (static analysis) bug 1227096 - fix a potential divide-by-zero in pqg_verifyparams from lib/freebl/pqg.c (static analysis) bug 1509432 - de-duplicate code between mp_set_long and mp_set_ulong bug 1515011 - fix a mistake with chacha20-poly1305 test code where tag...

NSS 3.48 release notes
on of versions lower than 1.3 after helloretryrequest bug 1596450 - added a simplified and unified mac implementation for hmac and cmac behind pkcs#11 bug 1522203 - remove an old pentium pro performance workaround bug 1592557 - fix prng known-answer-test scripts bug 1586176 - encryptupdate should use maxout not block size (cve-2019-11745) bug 1593141 - add `notbefore` or similar "beginning-of-validity-period" parameter to mozilla::pkix::trustdomain::checkrevocation bug 1591363 - fix a pbkdf2 memory leak in nsc_generatekey if key length > max_key_len (256) bug 1592869 - use arm neon for ctr_xor bug 1566131 - ensure sha-1 fallback disabled in tls 1.2 bug 1577803 - mark pkcs#11 token as friendly if it implements ckp_public_certificates_token bug 1566126 - power ghash vector accelerati...

NSS Config Options
es128-gcm aes192-gcm aes256-gcm camellia128-cbc camellia192-cbc camellia256-cbc seed-cbc des-ede3-cbc des-40-cbc des-cbc null-cipher rc2 rc4 idea ssl key exchanges rsa rsa-export dhe-rsa dhe-dss dh-rsa dh-dss ecdhe-ecdsa ecdhe-rsa ecdh-ecdsa ecdh-rsa restrictions for asymmetric keys (integers) rsa-min dh-min dsa-min constraints on ssl protocols versions (integers) tls-version-min tls-version-max constraints on dtls protocols versions (integers) dtls-version-min dtls-version-max policy flags for algorithms ssl ssl-key-exchange key-exchange cert-signature signature all none ...

NSS Sample Code sample4
* # create ca cert, self-signed, generates key-pair, prompts for key * # type, cert type etc * # answers for prompts: 5,9,n,y,-1,n,5,6,7,9,n * $ certutil -s -s "cn=test ca, o=bogus inc, l=mtn view, st=ca, c=us" \ * -n testca -t ctu,ctu,ctu -v 60 -x -d .

nss tech note6
for example, on 32-bit solaris sparc for nss 3.11, say shlibsign -v -i libsoftokn3.so shlibsign -v -i libfreebl_32int64_3.so shlibsign -v -i libfreebl_32fpu_3.soshlibsign -v -i libfreebl_32int_3.so (you need to set ld_library_path appropriately and specify the correct pathnames of the libraries.) option 1 is simpler and highly preferred.

Notes on TLS - SSL 3.0 Intolerant Servers
now re-visit the problem site.

Python binding for NSS
f8 secitem_new_alloc() the following class constructors were modified to accept intialization parameters keypqgparams (dsa generation parameters) the following were deprecated nss.nss.make_line_pairs (replaced by nss.nss.make_line_fmt_tuples) deprecated functionality make_line_pairs() has been replaced by make_line_fmt_tuples() because 2-valued tuples were not sufficently general.

NSS tools : vfychain
-r following certfile is raw binary der (default) -t following cert is explicitly trusted (overrides db trust) -u usage 0=ssl client, 1=ssl server, 2=ssl stepup, 3=ssl ca, 4=email signer, 5=email recipient, 6=object signer, 9=protectedobjectsigner, 10=ocsp responder, 11=any ca -v verbose mode.

gtstd.html
verifying the server and client certificates when you have finished setting up the server and client certificate databases, verify that the client and server certificates are valid, as follows: >certutil -v -d server_db -u v -n myco.mcom.org certutil: certificate is valid >certutil -v -d client_db -u c -n "joe client" certutil: certificate is valid building nss programs on unix, use the gnu utility gmake to run the makefile.

NSS tools : vfychain
-r following certfile is raw binary der (default) -t following cert is explicitly trusted (overrides db trust) -u usage 0=ssl client, 1=ssl server, 2=ssl stepup, 3=ssl ca, 4=email signer, 5=email recipient, 6=object signer, 9=protectedobjectsigner, 10=ocsp responder, 11=any ca -v verbose mode.

Rhino JavaScript compiler
-version versionnumber specifies the language version to compile with.

Rhino shell
-version versionnumber specifies the language version to compile with.

Creating JavaScript tests
jstests is intended for tests of language-visible functionality.

Index
543 spidermonkey 1.8.8 spidermonkey spidermonkey 1.8.8 is supported on all the platforms where firefox insert-actual-firefox-version-number-here runs.

JSNative
vp js::value * the arguments, the this argument, the return-value slot, and the callee function object are accessible through this pointer using macros described below.

JS_AddArgumentFormatter
the js_true passed for fromjs tells the formatter to convert zero or more jsvals at sp to zero or more c values accessed via pointers-to-values at ap, updating both sp (via *vpp) and ap (via *app) to point past the converted arguments and their result pointers on the c stack.

JS_DefineProperties
the last array element must contain 0-valued members.

SpiderMonkey 17
future direction include-followup-on-experimental-library-versioning-scheme-here spidermonkey embedders should also be aware that mozilla has no plans to keep the jsapi, nor the jsdbgapi stable for embedders.

TPS Bookmark Lists
a bookmark asset list is an object with one or more key-value pairs.

Thread Sanitizer
you can check which version of clang you have by running the command: clang -v if you are not building from mozilla-central and are building firefox 39 or earlier, you must use clang 3.3.

Secure Development Guidelines
existing function pointer a vulnerability is required to modify the eip or sensitive memory saved return addr or function pointer get altered introduction: gaining control (3) common issues used to gain control buffer overflows format string bugs integer overflows/underflows writing secure code: input validation input validation most vulnerabilities are a result of un-validated input always perform input validation could save you without knowing it examples: if it doesn’t have to be negative, store it in an unsigned int if the input doesn’t have to be > 512, cut it off there if the input should only be [a-za-z0-9], enforce it cross site scripting (xss) xss is a type of code injection attack typically occurs in web applications inje...

Setting up an update server
these changes will need to be made in order to use the locally built mar: put this line in the mozconfig file in root of the build directory (create it if it does not exist): ac_add_options --disable-verify-mar several files contain a line that must be uncommented.

XForms Accessibility
build it yourself if you would like to build firefox/seamonkey yourself then please ensure your .mozconfig file has the following option: ac_add_options --enable-extensions=default,xforms,schema-validation how to test there are two approaches to test xforms accessibility.

XUL Accessibility
<description value="it's label for control" control="control" /> <hbox role="grouping" id="control" /> get tooltiptext attribute value if the aria role is used and it allows to have accessible value then aria-valuetext or aria-valuenow are used if the element is xlink then value is generated from link location actions if the element is xlink then jump action is exposed if the element has registered click event handler then click action is exposed xul elements notification used to display an informative message.

How to build an XPCOM component in JavaScript
{sdk_dir}/bin/xpidl -m typelib -w -v -i {sdk_dir}/idl -e helloworld.xpt helloworld.idl note: on windows you must use forward slashes for the include path.

Mozilla internal string guide
(you can make a 16-bit string guaranteed-valid utf-16 by passing it to ensureutf16validity().) the most common encodings are: ascii - 7-bit encoding for basic english-only strings.

Introduction to XPCOM for the DOM
for instance, if nsfoo implements two different interfaces, nsifoo and nsibar, a pointer to nsifoo cannot call the methods defined on nsibar and vice-versa.

Components.utils.getGlobalForObject
syntax var global = components.utils.getglobalforobject(obj); parameters obj an object whose corresponding global object is to be retrieved; non-optional, must be object-valued example var obj = {}; function foo() { } var global = this; var g1 = components.utils.getglobalforobject(foo); var g2 = components.utils.getglobalforobject(obj); // g1 === global, g2 === global, g1 === g2 // in a script in another window var global2 = this; function bar() { } var obj2 = {}; // then, assuming bar refers to the function defined in that other window: var o1 = components.uti...

xpcshell
to rectify this, run xpcshell with the -v 180 command-line option, which tells xpcshell to use javascript 1.8.

imgIContainer
"notxpcom" for convenience, since we have no need for nsresult return-val.

mozIStorageStatementParams
enumeration of properties you can also enumerate all the properties on this object with a for..in enumeration: // valuestobind is an object that contains key-value pairs // to bind to the statement before executing it.

nsIChannelEventSink
by calling oldchannel->cancel() there is a certain freedom in implementing this method: if the return-value indicates success, a callback on callback is required.

nsIClipboard
lavorlist, in unsigned long alength, in long awhichclipboard); void setdata(in nsitransferable atransferable, in nsiclipboardowner anowner, in long awhichclipboard); boolean supportsselectionclipboard(); boolean supportsfindclipboard(); constants most clipboard operations in firefox use kglobalclipboard, which is the one also used by the typical control-c/control-v keyboard shortcuts.

nsIContentPrefService2
this interface doesn't impart any special significance to global preferences; they're simply name-value pairs that aren't associated with any particular domain.

nsIDOMStorage
a storage object stores an arbitrary set of key-value pairs, which may be retrieved, modified and removed as needed.

nsIFile
remarks all string-valued methods and attributes have two forms.

Building an Account Manager Extension
textual unique identifier or rendez-vous point in the category manager.

nsINavHistoryResult
1.0 66 introduced gecko 1.8 inherits from: nsisupports last changed in gecko 2.0 (firefox 4 / thunderbird 3.3 / seamonkey 2.1) places results use a model-view-controller (mvc) design pattern.

XPCOM primitive
c0-11d3-baea-00805f8a5dd7)] interface nsisupportsfloat : nsisupportsprimitive { attribute float data; string tostring(); }; double nsisupportsdouble @mozilla.org/supports-double;1 [scriptable, uuid(b32523a0-4ac0-11d3-baea-00805f8a5dd7)] interface nsisupportsdouble : nsisupportsprimitive { attribute double data; string tostring(); }; voidptr nsisupportsvoid @mozilla.org/supports-void;1 [scriptable, uuid(464484f0-568d-11d3-baf8-00805f8a5dd7)] interface nsisupportsvoid : nsisupportsprimitive { [noscript] attribute voidptr data; string tostring(); }; nsisupports nsisupportsinterfacepointer @mozilla.org/supports-interface-pointer;1 [scriptable, uuid(995ea724-1dd1-11b2-9211-c21bdd3e7ed0)] interface nsisupportsinterfacepointer : nsisupportsprimitive { attribute nsi...

nsIAbCard/Thunderbird3
the non-variant functions are marked [noscript] since xpconnect uses magic with nsivariant such that the other functions are not needed, although c++ does need them.

nsStaticModuleInfo
#include "nsxpcom.h" struct nsstaticmoduleinfo { const char* name; nsgetmoduleproc getmodule; }; members name this member provides the name of the module as a null-terminated, ascii-valued character array.

pyxpidl
xpidl option description pyxpidl equivalent -a emit annotations to typelib n/a (feature removed) -w turn on warnings n/a (this is now the default and can't be turned off) -v verbose mode (nyi) n/a (feature removed) -t creates a typelib of a specific version number n/a (feature removed, and probably never actually worked) -i add an entry to start of include path for #include "nsifoo.idl" -i (unchanged) -o specify the base name for output (-o /tmp/nsifoo for example) -o outputfile (this isn't just the base name, but ne...

xpidl
for testing purposes, or one-off interface compilation, xpidl can be run from the command line: usage: ./xpidl -m mode [-w] [-v] [-t version number] [-d filename.pp] [-i path] [-o basename | -e filename.ext] filename.idl -a emit annotations to typelib -w turn on warnings (recommended) -v verbose mode (nyi) -t create a typelib of a specific version number -i add entry to start of include path for ``#include "nsithing.idl" -o use basename (e.g.

XPIDL
out and inout parameters are reflected as objects having the .value property which contains the real value of the parameter; it is not initialized in the case of out parameters and is initialized to the passed-in-value for inout parameters.

The Valgrind Test Job
ac_add_options --enable-valgrind ac_add_options --disable-jemalloc running to run the valgrind test job locally, run the following command.

Mail and RDF
instead of having a singleton datasource that is shared across all ui components, we have per-view datasources.

The libmime module
struct foobarclass { parentclass superclass; ...any callbacks or class-variables...

Using the Multiple Accounts API
- boolean, should we download new messags on biff (true) or just alert user that there is new mail (false) preference: mail.server.server.directory - local platform-specific path to store messages and folder indexes preference: mail.server.server.name - user-visible name of server the following are specific to imap: preference: mail.server.server.admin_url - administration url for server preference: mail.server.server.using_subscription - boolean, should we use subscriptions?

WebIDL bindings
utf8string utf8string is a string with guaranteed-valid utf-8 contents.

Mozilla
displaying places information using views views are one component of the places model-view-controller design.

Initialization and Destruction - Plugins
the arguments in the embed element are name-value pairs made up of the attribute name (for example, align) and its value (for example, top).

Plug-in Basics - Plugins
i found other way how check which paths support firefox : $ strace -y /usr/bin/firefox 2>&1 | grep acces | grep -v search | grep plugins access("/home/user_name/.mozilla/firefox/dqh2nb5k.default-1441864569209/plugins", f_ok) = -1 enoent (no such file or directory) access("/home/user_name/.mozilla/plugins", f_ok) = -1 enoent (no such file or directory) access("/usr/lib64/firefox/browser/plugins", f_ok) = -1 enoent (no such file or directory) access("/usr/lib/mozilla/plugins", f_ok) = 0 this output i have afte...

URLs - Plugins
posting data to an http server the following code posts two name-value pairs to a cgi script through http.

Access debugging in add-ons - Firefox Developer Tools
window.addeventlistener("debugger:editorunloaded") relevant files: chrome://browser/content/devtools/debugger-controller.js chrome://browser/content/devtools/debugger-toolbar.js chrome://browser/content/devtools/debugger-view.js chrome://browser/content/devtools/debugger-panes.js unfortunately there is not yet any api to evaluate watches/expressions within the debugged scope, or highlight elements on the page that are referenced as variables in the debugged scope.

Debugger.Object - Firefox Developer Tools
by convention, host annotation objects have a string-valued "type" property that, taken together with the object's class, indicate what sort of thing the referent is.

Network request details - Firefox Developer Tools
ons", "value": "nosniff" }, { "name": "x-firefox-spdy", "value": "h2" }, { "name": "x-frame-options", "value": "sameorigin" }, { "name": "x-powered-by", "value": "hhvm/3.18.6-dev" }, { "name": "x-search-id", "value": "esvan0r5bnnwscyk2wq09i1im" }, { "name": "x-varnish", "value": "766019457, 417549316" } ] }, "request headers (665 b)": { "headers": [ { "name": "accept", "value": "*/*" }, { "name": "accept-encoding", "value": "gzip, deflate, br" }, { "name": "accept-language", "value": "en-us,en;q=0.5" }, { "name": "connection", ...

Storage Inspector - Firefox Developer Tools
a string containing key-value pairs, like "id=1234:foo=bar" is shown as json: {id:1234, foo: "bar"}.

AudioBufferSourceNode.playbackRate - Web APIs
<input class="playback-rate-control" type="range" min="0.25" max="3" step="0.05" value="1"> <span class="playback-rate-value">1.0</span> function getdata() { source = audioctx.createbuffersource(); request = new xmlhttprequest(); request.open('get', 'viper.ogg', true); request.responsetype = 'arraybuffer'; request.onload = function() { var audiodata = request.response; audioctx.decodeaudiodata(audiodata, function(buffer) { mybuffer = buffer; source.buffer = mybuffer; ...

AudioTrackList.onremovetrack - Web APIs
document.queryselector("my-video").audiotracks.onremovetrack = function(event) { mytrackcount = document.queryselector("my-video").audiotracks.length; }; the current number of audio tracks remaining in the media element is obtained from audiotracklist property length.

AudioWorkletGlobalScope.registerProcessor - Web APIs
note: a key-value pair { name: constructor } is saved internally in the audioworkletglobalscope once the processor is registered.

BaseAudioContext.createStereoPanner() - Web APIs
var audioctx = new (window.audiocontext || window.webkitaudiocontext)(); var myaudio = document.queryselector('audio'); var pancontrol = document.queryselector('.panning-control'); var panvalue = document.queryselector('.panning-value'); pre.innerhtml = myscript.innerhtml; // create a mediaelementaudiosourcenode // feed the htmlmediaelement into it var source = audioctx.createmediaelementsource(myaudio); // create a stereo panner var pannode = audioctx.createstereopanner(); // event handler function to increase panning to the right and left // when the slider is moved pancontrol.oninput = function() { pannode.pan.se...

Body.formData() - Web APIs
if a user submits a form and a service worker intercepts the request, you could for example call formdata() on it to obtain a key-value map, modify some fields, then send the form onwards to the server (or use it locally).

CSS.supports() - Web APIs
the first one allows to test the support of a pair property-value: propertyname a domstring containing the name of the css property to check.

CSS - Web APIs
css.supports() returns a boolean indicating if the pair property-value, or the condition, given in parameter is supported.

CSSStyleRule.styleMap - Web APIs
the stylemap read-only property of the cssstylerule interface returns a stylepropertymap object which provides access to the rule's property-value pairs.

CSSStyleRule - Web APIs
cssstylerule.stylemap read only returns a stylepropertymap object which provides access to the rule's property-value pairs.

Using the CSS properties and values API - Web APIs
the following will register a css custom properties, --my-prop, using @property, as a color, give it a default value, and have it not inherit its value: @property --my-prop { syntax: '<color>'; inherits: false; initial-value: #c0ffee; } using registered custom properties one of the advantages of registering a property is that the browser now knows how it should handle your custom property through things like transitions!

CSS Properties and Values API - Web APIs
ipt to type a css custom properties, --my-color, as a color, give it a default value, and not allow it to inherit its value: window.css.registerproperty({ name: '--my-color', syntax: '<color>', inherits: false, initialvalue: '#c0ffee', }); the same registration can take place in css using the following @property: @property --my-color { syntax: '<color>'; inherits: false; initial-value: #c0ffee; } specifications specification status comment css properties and values api level 1 working draft initial definition.

Cache - Web APIs
var cache_version = 1; var current_caches = { font: 'font-cache-v' + cache_version }; self.addeventlistener('activate', function(event) { // delete all caches that aren't named in current_caches.

CryptoKeyPair - Web APIs
a cryptokeypair object can be obtained using subtlecrypto.generatekey(), when the selected algorithm is one of the asymmetric algorithms: rsassa-pkcs1-v1_5, rsa-pss, rsa-oaep, ecdsa, or ecdh.

Document.cookie - Web APIs
consider also that: any of the following cookie attribute values can optionally follow the key-value pair, specifying the cookie to set/update, and preceded by a semi-colon separator: ;path=path (e.g., '/', '/mydir') if not specified, defaults to the current path of the current document location.

Document.xmlVersion - Web APIs
to detect this, you can create an element with its name in lower case, then check to see if it gets converted into all upper case (in which case the document is in the non-xml html mode): if (document.createelement("foo").tagname == "foo") { /* document is not xml */ } specifications http://www.w3.org/tr/dom-level-3-cor...ument3-version this has been removed from dom core level 4wd ...

ExtendableEvent.waitUntil() - Web APIs
example using waituntil() within a service worker's install event: addeventlistener('install', event => { const precache = async () => { const cache = await caches.open('static-v1'); return cache.addall([ '/', '/about/', '/static/styles.css' ]); }; event.waituntil(precache()); }); specifications specification status comment service workersthe definition of 'waituntil()' in that specification.

ExtendableEvent - Web APIs
var cache_version = 1; var current_caches = { prefetch: 'prefetch-cache-v' + cache_version }; self.addeventlistener('install', function(event) { var urlstoprefetch = [ './static/pre_fetched.txt', './static/pre_fetched.html', 'https://www.chromium.org/_/rsrc/1302286216006/config/customlogo.gif' ]; console.log('handling install event.

FetchEvent.respondWith() - Web APIs
this means sites can still provide an "alternate" view of a web page when offline without changing the user-visible url.

FetchEvent - Web APIs
const cache = await caches.open('dynamic-v1'); const cachedresponse = await cache.match(event.request); if (cachedresponse) { // if we found a match in the cache, return it, but also // update the entry in the cache in the background.

FileSystemEntry.isDirectory - Web APIs
you should not assume that any entry which isn't a directory is a file or vice-versa.

FileSystemEntry.isFile - Web APIs
you should not assume that any entry which isn't a file is a directory or vice-versa.

FontFace.variant - Web APIs
it is equivalent to the font-variant descriptor.

FontFace - Web APIs
it is equivalent to the font-variant descriptor.

FormDataEntryValue - Web APIs
a string or file that represents a single value from a set of formdata key-value pairs.

HTMLLinkElement - Web APIs
the htmllinkelement interface represents reference information for external resources and the relationship of those resources to a document and vice-versa (corresponds to <link> element; not to be confused with <a>, which is represented by htmlanchorelement).

History - Web APIs
if you specify an out-of-bounds value (for instance, specifying -1 when there are no previously-visited pages in the session history), this method silently has no effect.

IDBIndex - Web APIs
an index lets you look up records in an object store using properties of the values in the object stores records other than the primary key the index is a persistent key-value storage where the value part of its records is the key part of a record in the referenced object store.

InstallEvent - Web APIs
var cache_version = 1; var current_caches = { prefetch: 'prefetch-cache-v' + cache_version }; self.addeventlistener('install', function(event) { var urlstoprefetch = [ './static/pre_fetched.txt', './static/pre_fetched.html', 'https://www.chromium.org/_/rsrc/1302286216006/config/customlogo.gif' ]; console.log('handling install event.

Key Values - Web APIs
gdk_key_audiocycletrack (0x1008ff9b) qt::key_audiocycletrack (0x01000106) keycode_media_audio_track (222) "medialast" jumps back to the last-viewed content, program, or other media.

MediaKeyStatusMap.forEach() - Web APIs
the foreach property of the mediakeystatusmap interface calls callback once for each key-value pair in the status map, in insertion order.

MediaKeyStatusMap - Web APIs
mediakeystatusmap.foreach(callback[, argument]) read only calls callback once for each key-value pair in the status map, in insertion order.

Transcoding assets for Media Source Extensions - Web APIs
run the following commands (shown with sample output): $ python mp4-dash-encode.py -b 5 -v bunny_fragmented.mp4 encoding 5 bitrates, min bitrate = 500.0 max bitrate = 2000.0 media source: video: resolution=640x360 encoding bitrate: 500, resolution: 256x144 encoding bitrate: 875, resolution: 384x216 encoding bitrate: 1250, resolution: 480x270 encoding bitrate: 1625, resolution: 560x316 encoding bitrate: 2000, resolution: 640x360 $ python mp4-dash.py video_0* parsing media file 1: video...

Microdata DOM API - Web APIs
</p> <img itemprop="img" src="hedral.jpeg" alt="" title="hedral, age 18 months"> </section> ...it would result in the following output: name http://example.com/fn desc http://example.com/color img (the duplicate occurrence of "http://example.com/color" is not included in the list.) htmlpropertiescollection the htmlpropertiescollection interface is used for collections of elements that add name-value pairs to a particular item in the microdata model.

Navigator.requestMediaKeySystemAccess() - Web APIs
this method may have user-visible effects such as asking for permission to access one or more system resources.

NavigatorID.userAgent - Web APIs
gecko-based browsers comply with the following general structure: useragent = appcodename/appversion number (platform; security; os-or-cpu; localization; rv: revision-version-number) product/productsub application-name application-name-version example alert(window.navigator.useragent) // alerts "mozilla/5.0 (windows; u; win98; en-us; rv:0.9.2) gecko/20010725 netscape6/6.1" specifications specification status comment html living standardthe definition of 'navigatorid.useragent' in that specification.

PerformanceEventTiming - Web APIs
// keep track of whether (and when) the page was first hidden, see: // https://github.com/w3c/page-visibility/issues/29 // note: ideally this check would be performed in the document <head> // to avoid cases where the visibility state changes before this code runs.

Permissions.query() - Web APIs
}) parameters permissiondescriptor an object that sets options for the query operation consisting of a comma-separated list of name-value pairs.

Permissions.revoke() - Web APIs
var revokepromise = navigator.permissions.revoke(descriptor); parameters descriptor an object based on the permissiondescriptor dictionary that sets options for the operation consisting of a comma-separated list of name-value pairs.

PublicKeyCredentialCreationOptions.authenticatorSelection - Web APIs
note: see publickeycredential.isuserverifyingplatformauthenticatoravailable() which resolves to true when a user-verifiying platform authenticator is available.

RTCInboundRtpStreamStats - Web APIs
perdscppacketsreceived a record of key-value pairs with strings as the keys mapped to 32-bit integer values, each indicating the total number of packets this receiver has received on this rtp stream from this source for each differentiated services code point (dscp).

RTCOutboundRtpStreamStats - Web APIs
perdscppacketssent a record of key-value pairs with strings as the keys mapped to 32-bit integer values, each indicating the total number of packets this rtcrtpsender has transmitted for this source for each differentiated services code point (dscp).

RTCPeerConnection.createOffer() - Web APIs
for example, in the case of music or other non-voice transmission, this can cause loss of important low-volume sounds.

RTCPeerConnection.generateCertificate() - Web APIs
example rtcpeerconnection.generatecertificate({ name: 'rsassa-pkcs1-v1_5', hash: 'sha-256', moduluslength: 2048, publicexponent: new uint8array([1, 0, 1]) }).then(function(cert) { var pc = new rtcpeerconnection({certificates: [cert]}); }); specifications specification status comment webrtc 1.0: real-time communication between browsersthe definition of 'generatecertificate()' in that specification.

RTCPeerConnection.getConfiguration() - Web APIs
let configuration = mypeerconnection.getconfiguration(); if ((configuration.certificates != undefined) && (!configuration.certificates.length)) { rtcpeerconnection.generatecertificate({ name: 'rsassa-pkcs1-v1_5', hash: 'sha-256', moduluslength: 2048, publicexponent: new uint8array([1, 0, 1]) }).then(function(cert) { configuration.certificates = [cert]; mypeerconnection.setconfiguration(configuration); }); } this example fetches the current configuration of the rtcpeerconnection, then looks to see if it has any certificates set by examining whether or not (a) the config...

Using the Screen Capture API - Web APIs
in this case, the user agent may include the obscured content, either by getting the current contents of the hidden portion of the window or by presenting the most-recently-visible contents if the current contents are not available.

Selection - Web APIs
the anchor can be placed before the focus or vice-versa, depending on the direction you made your selection.

SpeechSynthesis - Web APIs
var synth = window.speechsynthesis; var inputform = document.queryselector('form'); var inputtxt = document.queryselector('.txt'); var voiceselect = document.queryselector('select'); var pitch = document.queryselector('#pitch'); var pitchvalue = document.queryselector('.pitch-value'); var rate = document.queryselector('#rate'); var ratevalue = document.queryselector('.rate-value'); var voices = []; function populatevoicelist() { voices = synth.getvoices(); for(i = 0; i < voices.length ; i++) { var option = document.createelement('option'); option.textcontent = voices[i].name + ' (' + voices[i].lang + ')'; if(voices[i].default) { option.textcont...

StereoPannerNode.pan - Web APIs
var audioctx = new (window.audiocontext || window.webkitaudiocontext)(); var myaudio = document.queryselector('audio'); var pancontrol = document.queryselector('.panning-control'); var panvalue = document.queryselector('.panning-value'); pre.innerhtml = myscript.innerhtml; // create a mediaelementaudiosourcenode // feed the htmlmediaelement into it var source = audioctx.createmediaelementsource(myaudio); // create a stereo panner var pannode = audioctx.createstereopanner(); // event handler function to increase panning to the right and left // when the slider is moved pancontrol.oninput = function() { pannode.pan.se...

StereoPannerNode - Web APIs
var audioctx = new (window.audiocontext || window.webkitaudiocontext)(); var myaudio = document.queryselector('audio'); var pancontrol = document.queryselector('.panning-control'); var panvalue = document.queryselector('.panning-value'); pre.innerhtml = myscript.innerhtml; // create a mediaelementaudiosourcenode // feed the htmlmediaelement into it var source = audioctx.createmediaelementsource(myaudio); // create a stereo panner var pannode = audioctx.createstereopanner(); // event handler function to increase panning to the right and left // when the slider is moved pancontrol.oninput = function() { pannode.pan.se...

Storage API - Web APIs
it may be a less-visited site, or one known to have lower data storage requirements.

SubtleCrypto.generateKey() - Web APIs
for rsassa-pkcs1-v1_5, rsa-pss, or rsa-oaep: pass an rsahashedkeygenparams object.

SubtleCrypto.importKey() - Web APIs
for rsassa-pkcs1-v1_5, rsa-pss, or rsa-oaep: pass an rsahashedimportparams object.

SubtleCrypto.unwrapKey() - Web APIs
for rsassa-pkcs1-v1_5, rsa-pss, or rsa-oaep: pass an rsahashedimportparams object.

SubtleCrypto - Web APIs
the table below summarises which algorithms are suitable for which cryptographic operations: sign() verify() encrypt() decrypt() digest() derivebits() derivekey() wrapkey() unwrapkey() rsassa-pkcs1-v1_5 ✓ rsa-pss ✓ ecdsa ✓ hmac ✓ rsa-oaep ✓ ✓ aes-ctr ✓ ✓ aes-cbc ✓ ✓ aes-gcm ✓ ✓ sha-1 ✓ sha-256 ✓ ...

TextDecoder.prototype.decode() - Web APIs
html <p>encoded value: <span id="encoded-value"></span></p> <p>decoded value: <span id="decoded-value"></span></p> javascript const encoder = new textencoder(); const array = encoder.encode('€'); // uint8array(3) [226, 130, 172] document.getelementbyid('encoded-value').textcontent = array; const decoder = new textdecoder(); const str = decoder.decode(array); // string "€" document.getelementbyid('decoded-value').textcontent = str; ...

TextTrack.mode - Web APIs
tracks whose kind is "descriptions" are presented in a non-visual form (for example, the text might be spoken to describe the action in the video).

URLSearchParams.set() - Web APIs
s for(var pair of theurl.searchparams.entries()) { console.debug(pair[0] + ' = \'' + pair[1] + '\''); } console.debug(theurl) } return theurl } var url = genurl( /(^\s*\/\/|\s*[^:]\/\/).*\s*$|\s*\/\*(.|\n)+?\*\/\s*$/gm // single/multi-line comments // /(^\s*\/\/.*|\s*[^:]\/\/.*)/g // single-line comments ,[ "these should work:", "", "// eslint-disable-next-line no-unused-vars", "lockpref( 'keyword.url',\t\t'https://duckduckgo.com/html/?q=!+' )\t// test", "/*", " * bla bla ", "*/", "", "/* bla bla */", "", "// bla bla ", "", "these shouldn\'t work:", "console.log(\"http://foo.co.uk/\")", "var url = \"http://regexr.com/foo.html?q=bar\"", "alert(\"https://mediatemple.net\")", ] , true ) console.info( url, url.tostring() ) // window.

VideoTrackList.onremovetrack - Web APIs
document.queryselector("my-video").videotracks.onremovetrack = function(event) { mytrackcount = document.queryselector("my-video").videotracks.length; }; the current number of video tracks remaining in the media element is obtained from videotracklist property length.

WebGL2RenderingContext.vertexAttribIPointer() - Web APIs
bone indices, interpreted as integer gl.vertexattribipointer(2, 4, gl.unsigned_byte, 20, 16); gl.enablevertexattribarray(2); //connect to attributes from the vertex shader gl.bindattriblocation(shaderprogram, 0, "position"); gl.bindattriblocation(shaderprogram, 1, "boneweights"); gl.bindattriblocation(shaderprogram, 2, "boneindices"); <script id="shader-vs" type="x-shader/x-vertex">#version 300 es uniform mat4 mvmatrix; uniform mat4 bones[120]; in vec3 position; in vec4 boneweights; in uvec4 boneindices;//read as 4-component unsigned integer void main() { vec4 skinnedposition = bones[boneindices.s] * vec4(position, 1.0) * boneweights.s + bones[boneindices.t] * vec4(position, 1.0) * boneweights.t + bones[boneindices.p...

Hello GLSL - Web APIs
hello glsl!</p> <canvas>your browser does not seem to support html5 canvas.</canvas> body { text-align : center; } canvas { width : 280px; height : 210px; margin : auto; padding : 0; border : none; background-color : black; } button { display : block; font-size : inherit; margin : auto; padding : 0.6em; } <script type="x-shader/x-vertex" id="vertex-shader"> #version 100 void main() { gl_position = vec4(0.0, 0.0, 0.0, 1.0); gl_pointsize = 64.0; } </script> <script type="x-shader/x-fragment" id="fragment-shader"> #version 100 void main() { gl_fragcolor = vec4(0.18, 0.54, 0.34, 1.0); } </script> ;(function(){ "use strict" window.addeventlistener("load", setupwebgl, false); var gl, program; function setupwebgl (...

Hello vertex attributes - Web APIs
o change the horizontal position of the square.</p> <canvas>your browser does not seem to support html5 canvas.</canvas> body { text-align : center; } canvas { width : 280px; height : 210px; margin : auto; padding : 0; border : none; background-color : black; } button { display : block; font-size : inherit; margin : auto; padding : 0.6em; } <script type="x-shader/x-vertex" id="vertex-shader"> #version 100 precision highp float; attribute float position; void main() { gl_position = vec4(position, 0.0, 0.0, 1.0); gl_pointsize = 64.0; } </script> <script type="x-shader/x-fragment" id="fragment-shader"> #version 100 precision mediump float; void main() { gl_fragcolor = vec4(0.18, 0.54, 0.34, 1.0); } </script> ;(function(){ "use strict" window.adde...

Textures from code - Web APIs
imple demonstration of procedural texturing</p> <canvas>your browser does not seem to support html5 canvas.</canvas> body { text-align : center; } canvas { width : 280px; height : 210px; margin : auto; padding : 0; border : none; background-color : black; } button { display : block; font-size : inherit; margin : auto; padding : 0.6em; } <script type="x-shader/x-vertex" id="vertex-shader"> #version 100 precision highp float; attribute vec2 position; void main() { gl_position = vec4(position, 0.0, 1.0); gl_pointsize = 128.0; } </script> <script type="x-shader/x-fragment" id="fragment-shader"> #version 100 precision mediump float; void main() { vec2 fragmentposition = 2.0*gl_pointcoord - 1.0; float distance = length(fragmentposition); float dis...

Adding 2D content to a WebGL context - Web APIs
the vertex shader must perform the needed transforms on the vertex's position, make any other adjustments or calculations it needs to make on a per-vertex basis, then return the transformed vertex by saving it in a special variable provided by glsl, called gl_position.

Lighting in WebGL - Web APIs
view the complete code | open this demo on a new page exercises for the reader obviously, this is a simple example, implementing basic per-vertex lighting.

Using shaders to apply color in WebGL - Web APIs
0, // red 0.0, 1.0, 0.0, 1.0, // green 0.0, 0.0, 1.0, 1.0, // blue ]; const colorbuffer = gl.createbuffer(); gl.bindbuffer(gl.array_buffer, colorbuffer); gl.bufferdata(gl.array_buffer, new float32array(colors), gl.static_draw); return { position: positionbuffer, color: colorbuffer, }; } this code starts by creating a javascript array containing four 4-value vectors, one for each vertex color.

Writing WebSocket client applications - Web APIs
security considerations websockets should not be used in a mixed content environment; that is, you shouldn't open a non-secure websocket connection from a page loaded using https or vice-versa.

Using bounded reference spaces - Web APIs
you can create a session that supports a bounded-floor reference space if available by using code such as the following: async function onactivatexrbutton(event) { if (!xrsession) { navgator.xr.requestsession("immersive-vr"), { requiredfeatures: ["local-floor"], optionalfeatures: ["bounded-floor"] }).then((session) => { xrsession = session; startsessionanimation(); }); } } this function, called when the user clicks on a button to start the xr experience, works as usual, exiting at once if a session is already in place, then requesting a new session using immersive-vr mode.

Fundamentals of WebXR - Web APIs
the immersive session mode is indicated using the session mode immersive-vr.

Geometry and reference spaces in WebXR - Web APIs
it is not only always available when using an immersive session mode (immersive-vr or immersive-ar), but is always included among the optional features when requesting a new session; thus, every session created by navigator.xr.requestsession() supports the local reference space type.

Inputs and input sources - Web APIs
the grip space's native origin, located around the center of the player's fist, is (0, 0, 0) within the input source's local coordinate system, while the xrspace specified by gripspace can be used at any time to convert coordinates or vectors from the input source's space into world coordinates (or vice-versa).

WebXR performance guide - Web APIs
can probably also include stuff from https://github.com/immersive-web/webxr/blob/master/explainer.md#changing-the-field-of-view-for-inline-sessions managing rendering quality ...

Rendering and the WebXR frame animation callback - Web APIs
kicking off the renderer thus looks like this: let worldrefspace; async function runxr(xrsession) { worldrefspace = await xrsession.requestreferencespace("immersive-vr"); if (worldrefspace) { viewerrefspace = worldrefspace.getoffsetreferencespace( new xrrigidtransform(viewerstartposition, viewerstartorientation)); animationframerequestid = xrsession.requestanimationframe(mydrawframe); } } after getting a reference space for the immersive world, this creates an offset reference space representing the position and orientation of the viewer...

Window.getDefaultComputedStyle() - Web APIs
see http://blog.mozilla.com/security/2010/03/31/plugging-the-css-history-leak/ and http://hacks.mozilla.org/2010/03/privacy-related-changes-coming-to-css-vistited/ for details of the examples of how this is implemented.

Window.window - Web APIs
yet another reason to use this property, is for libraries which wish to offer oop-versions, and non-oop versions (especially javascript modules).

XRPermissionDescriptor.optionalFeatures - Web APIs
xrreferencespace usage notes examples let xrpermissiondesc = { name: "xr", mode: "immersive-vr", optionalfeatures: [ "bounded-floor" ] }; if (navigator.permissions) { navigator.permissions.query(xrpermissiondesc).then(({state}) => { switch(state) { case "granted": setupxr(); break; case "prompt": promptandsetupxr(); break; default: /* do nothing otherwise */ break; } .catch(err) { console.log(err); } } els...

XRRigidTransform.matrix - Web APIs
[100px010py001pz0001]\begin{bmatrix} 1 & 0 & 0 & x\\ 0 & 1 & 0 & y\\ 0 & 0 & 1 & z\\ 0 & 0 & 0 & 1 \end{bmatrix} then a rotation matrix is created by computing a column-vector rotation matrix from the unit quaternion specified by orientation: [1-2(qy2+qz2)2(qxqy-qzqw)2(qxqz+qyqw)02(qxqy+qzqw)1-2(qx2+qz2)2(qyqz-qxqw)02(qxqz-qyqw)2(qyqz+qxqw)1-2(qx2+qy2)00001]\begin{bmatrix} 1 - 2(q_y^2 + q_z^2) & 2(q_xq_y - q_zq_w) & 2(q_xq_z + q_yq_w) & p_x\\ 2(q_xq_y + q_zq_w) & 1 - 2(q_x^2 + q_z^2) & 2(q_yq_z - q_xq_w) & p_y\\ 2(q_xq_z - q_yq_w) & 2(q_yq_z + q_xq_w) & 1 - 2(q_x...

XRSession.cancelAnimationFrame() - Web APIs
const xr = navigator.xr; let requesthandle = null; let xrsession = null; if (xr) { xr.issessionsupported('immersive-vr') .then((issupported) => { if (issupported) { startxr(); } }); } function framecallback(time, xrframe) { xrsession.requestanimationframe(framecallback); // update and render the frame } async function startxr() { xrsession = xr.requestsession("immersive-vr"); if (xrsession) { stopbutton.onclick = stopxr; requesthandle = xrsession.requestanimationframe(framec...

XRSession.requestAnimationFrame() - Web APIs
function startxrsession() { navigator.xr.requestsession('immersive-vr').then((session) => { xrsession = session xrsession.addeventlistener('end', onxrsessionended) // do necessary session setup here.

XRSessionInit - Web APIs
default features immersive sessions all immersive (both immersive-vr and immersive-ar) sessions support both the viewer and local reference spaces.

XRSystem: devicechange event - Web APIs
if (navigator.xr) { navigator.xr.addeventlistener("devicechange", event => { navigator.xr.issessionsupported("immersive-vr") .then(immersiveok) => { if (immersiveok) { enablexrbutton.disabled = false; } else { enablexrbutton.disabled = true; } }); }); } when devicechange is received, the handler set up in this code calls the xr method issessionsupported() to find out if there's a device available that can handle immersive vr presentations.

XRSystem - Web APIs
if (navigator.xr) { immersivebutton.addeventlistener("click", onbuttonclicked); navigator.xr.issessionsupported('immersive-vr') .then((issupported) => { if (issupported) { immersivebutton.disabled = false; } else { immersivebutton.disabled = true; }); } function onbuttonclicked() { if (!xrsession) { navigator.xr.requestsession('immersive-vr') .then(() => { // onsessionstarted() not shown for reasons of brevity and clarity.

XRView - Web APIs
projectionmatrix read only the projection matrix that will transform the scene to appear correctly given the point-of-view indicated by eye.

XRViewerPose - Web APIs
this view can represent anything from the point-of-view of a user's xr headset to the viewpoint represented by a player's movement of an avatar using mouse and keyboard, presented on the screen, to a virtual camera capturing the scene for a spectator.

ARIA live regions - Accessibility
use this with aria-valuemin, aria-valuenow and aria-valuemax.

Using the aria-orientation attribute - Accessibility
<a href="#" id="handle_zoomslider" role="slider" aria-orientation="vertical" aria-valuemin="0" aria-valuemax="17" aria-valuenow="14" > <span>11</span> </a> working examples: slider example notes used with aria roles scrollbar listbox combobox menu tree separator slider tablist toolbar related aria techniques compatibility tbd: add support information for common ua and at product combinations additional resources wai-aria specifica...

Using ARIA: Roles, states, and properties - Accessibility
roles alertdialog dialog states and properties widget attributes aria-autocomplete aria-checked aria-current aria-disabled aria-errormessage aria-expanded aria-haspopup aria-hidden aria-invalid aria-label aria-level aria-modal aria-multiline aria-multiselectable aria-orientation aria-placeholder aria-pressed aria-readonly aria-required aria-selected aria-sort aria-valuemax aria-valuemin aria-valuenow aria-valuetext live region attributes aria-live aria-relevant aria-atomic aria-busy drag & drop attributes aria-dropeffect aria-dragged relationship attributes aria-activedescendant aria-colcount aria-colindex aria-colspan aria-controls aria-describedby aria-details aria-errormessage aria-flowto aria-labelledby aria-owns ar...

ARIA: dialog role - Accessibility
by="dialog1title" aria-describedby="dialog1desc"> <h2 id="dialog1title">your personal details were successfully updated</h2> <p id="dialog1desc">you can change your details at any time in the user account section.</p> <button>close</button> </div> keep in mind that a dialog's title and description text do not have to be focusable in order to be perceived by screen readers operating in a non-virtual mode.

Accessibility: What users can do to browse more safely - Accessibility
one work station can be set up to acommodate both a low-vision individual (needs high-contrast) and to accomodate an individual with photosensitive susceptibilities, by simply, adjusting personalization and accessiblity settings.

:-moz-ui-invalid - CSS: Cascading Style Sheets
if the control has focus, and the value was invalid when it gained focus, re-validate on every keystroke.

::-webkit-progress-inner-element - CSS: Cascading Style Sheets
note: in order to let ::-webkit-progress-value take effect, -webkit-appearance needs to be set to none on the <progress> element.

::cue-region - CSS: Cascading Style Sheets
syntax ::cue-region | ::cue-region( <selector> ) permitted properties rules whose selectors include this element may only use the following css properties: background background-attachment background-clip background-color background-image background-origin background-position background-repeat background-size color font font-family font-size font-stretch font-style font-variant font-weight line-height opacity outline outline-color outline-style outline-width ruby-position text-combine-upright text-decoration text-decoration-color text-decoration-line text-decoration-style text-decoration-thickness text-shadow visibility white-space specifications specification status comment webvtt: the web video text tracks formatthe d...

::cue - CSS: Cascading Style Sheets
syntax ::cue | ::cue( <selector> ) permitted properties rules whose selectors include this element may only use the following css properties: background background-attachment background-clip background-color background-image background-origin background-position background-repeat background-size color font font-family font-size font-stretch font-style font-variant font-weight line-height opacity outline outline-color outline-style outline-width ruby-position text-combine-upright text-decoration text-decoration-color text-decoration-line text-decoration-style text-decoration-thickness text-shadow visibility white-space examples styling webvtt cues as white-on-black the following css sets the cue style so that the text is white an...

::first-letter (:first-letter) - CSS: Cascading Style Sheets
allowable properties only a small subset of css properties can be used with the ::first-letter pseudo-element: all font properties : font, font-style, font-feature-settings, font-kerning, font-language-override, font-stretch, font-synthesis, font-variant, font-variant-alternates, font-variant-caps, font-variant-east-asian, font-variant-ligatures, font-variant-numeric, font-variant-position, font-weight, font-size, font-size-adjust, line-height and font-family all background properties : background, background-color, background-image, background-clip, background-origin, background-position, background-repeat, background-size, background-att...

::first-line (:first-line) - CSS: Cascading Style Sheets
allowable properties only a small subset of css properties can be used with the ::first-line pseudo-element: all font-related properties: font, font-kerning, font-style, font-variant, font-variant-numeric, font-variant-position, font-variant-east-asian, font-variant-caps, font-variant-alternates, font-variant-ligatures, font-synthesis, font-feature-settings, font-language-override, font-weight, font-size, font-size-adjust, font-stretch, and font-family all background-related properties: background-color, background-clip, background-image, background-origin, background-...

::slotted() - CSS: Cascading Style Sheets
'*'<subclass-selector> = <id-selector> | <class-selector> | <attribute-selector> | <pseudo-class-selector><pseudo-element-selector> = ':' <pseudo-class-selector><pseudo-class-selector> = ':' <ident-token> | ':' <function-token> <any-value> ')'where <wq-name> = <ns-prefix>?

:has() - CSS: Cascading Style Sheets
'*'<subclass-selector> = <id-selector> | <class-selector> | <attribute-selector> | <pseudo-class-selector><pseudo-element-selector> = ':' <pseudo-class-selector><pseudo-class-selector> = ':' <ident-token> | ':' <function-token> <any-value> ')'where <wq-name> = <ns-prefix>?

:host() - CSS: Cascading Style Sheets
'*'<subclass-selector> = <id-selector> | <class-selector> | <attribute-selector> | <pseudo-class-selector><pseudo-element-selector> = ':' <pseudo-class-selector><pseudo-class-selector> = ':' <ident-token> | ':' <function-token> <any-value> ')'where <wq-name> = <ns-prefix>?

:host-context() - CSS: Cascading Style Sheets
'*'<subclass-selector> = <id-selector> | <class-selector> | <attribute-selector> | <pseudo-class-selector><pseudo-element-selector> = ':' <pseudo-class-selector><pseudo-class-selector> = ':' <ident-token> | ':' <function-token> <any-value> ')'where <wq-name> = <ns-prefix>?

:is() (:matches(), :any()) - CSS: Cascading Style Sheets
'*'<subclass-selector> = <id-selector> | <class-selector> | <attribute-selector> | <pseudo-class-selector><pseudo-element-selector> = ':' <pseudo-class-selector><pseudo-class-selector> = ':' <ident-token> | ':' <function-token> <any-value> ')'where <wq-name> = <ns-prefix>?

:not() - CSS: Cascading Style Sheets
'*'<subclass-selector> = <id-selector> | <class-selector> | <attribute-selector> | <pseudo-class-selector><pseudo-element-selector> = ':' <pseudo-class-selector><pseudo-class-selector> = ':' <ident-token> | ':' <function-token> <any-value> ')'where <wq-name> = <ns-prefix>?

:nth-child() - CSS: Cascading Style Sheets
'*'<subclass-selector> = <id-selector> | <class-selector> | <attribute-selector> | <pseudo-class-selector><pseudo-element-selector> = ':' <pseudo-class-selector><pseudo-class-selector> = ':' <ident-token> | ':' <function-token> <any-value> ')'where <wq-name> = <ns-prefix>?

:nth-last-child() - CSS: Cascading Style Sheets
'*'<subclass-selector> = <id-selector> | <class-selector> | <attribute-selector> | <pseudo-class-selector><pseudo-element-selector> = ':' <pseudo-class-selector><pseudo-class-selector> = ':' <ident-token> | ':' <function-token> <any-value> ')'where <wq-name> = <ns-prefix>?

:visited - CSS: Cascading Style Sheets
html <a href="#test-visited-link">have you visited this link yet?</a><br> <a href="">you've already visited this link.</a> css a { /* specify non-transparent defaults to certain properties, allowing them to be styled with the :visited state */ background-color: white; border: 1px solid white; } a:visited { background-color: yellow; border-color: hotpink; color: hotpink; } result specifications ...

:where() - CSS: Cascading Style Sheets
'*'<subclass-selector> = <id-selector> | <class-selector> | <attribute-selector> | <pseudo-class-selector><pseudo-element-selector> = ':' <pseudo-class-selector><pseudo-class-selector> = ':' <ident-token> | ':' <function-token> <any-value> ')'where <wq-name> = <ns-prefix>?

At-rules - CSS: Cascading Style Sheets
(at the candidate recommendation stage, but only implemented in gecko as of writing) @font-feature-values (plus @swash, @ornaments, @annotation, @stylistic, @styleset and @character-variant) — define common names in font-variant-alternates for feature activated differently in opentype.

Using URL values for the cursor property - CSS: Cascading Style Sheets
however, the svg image must contain a length-valued (not percentage-valued) height and width on its root svg node.

CSS Grid Layout and Accessibility - CSS: Cascading Style Sheets
the order property and grid placement do not affect ordering in non-visual media (such as speech).

Basic concepts of Logical Properties and Values - CSS: Cascading Style Sheets
note: the css working group are currently trying to decide what to do about the four-value shorthands for logical properties, for example the equivalents to setting four physical properties at once, like margins with the margin property.

CSS Properties Reference - CSS: Cascading Style Sheets
border-top-style bordertopstyle border-top-width bordertopwidth border-width borderwidth clear clear clip clip color color cursor cursor display display filter filter float cssfloat font font font-family fontfamily font-size fontsize font-variant fontvariant font-weight fontweight height height left left letter-spacing letterspacing line-height lineheight list-style liststyle list-style-image liststyleimage list-style-position liststyleposition list-style-type liststyletype margin margin margin-bottom ...

CSS Transforms - CSS: Cascading Style Sheets
reference properties backface-visibility perspective perspective-origin rotate scale transform transform-box transform-origin transform-style translate data types <transform-function> guides using css transforms step-by-step tutorial about how to transform elements styled with css.

Animatable CSS properties - CSS: Cascading Style Sheets
radius border-top-width border-width bottom box-shadow caret-color clip clip-path color column-count column-gap column-rule column-rule-color column-rule-width column-width columns filter flex flex-basis flex-grow flex-shrink font font-size font-size-adjust font-stretch font-variation-settings font-weight gap grid-column-gap grid-gap grid-row-gap grid-template-columns grid-template-rows height inline-size inset inset-block inset-block-end inset-block-start inset-inline inset-inline-end inset-inline-start left letter-spacing line-clamp line-height margin margin-...

Microsoft CSS extensions - CSS: Cascading Style Sheets
croll-snap-points-y -ms-scroll-snap-x -ms-scroll-snap-y -ms-scroll-translation -ms-text-autospace -ms-touch-select -ms-wrap-flow -ms-wrap-margin -ms-wrap-through zoom pseudo-elements ::-ms-browse ::-ms-check ::-ms-clear ::-ms-expand ::-ms-fill ::-ms-fill-lower ::-ms-fill-upper ::-ms-reveal ::-ms-thumb ::-ms-ticks-after ::-ms-ticks-before ::-ms-tooltip ::-ms-track ::-ms-value media features -ms-high-contrast css-related dom apis mscontentzoomfactor msgetpropertyenabled msgetregioncontent msrangecollection msregionoverflow ...

Pseudo-classes - CSS: Cascading Style Sheets
index of standard pseudo-classes :active :any-link :blank :checked :current :default :defined :dir() :disabled :drop :empty :enabled :first :first-child :first-of-type :fullscreen :future :focus :focus-visible :focus-within :has() :host :host() :host-context() :hover :indeterminate :in-range :invalid :is() :lang() :last-child :last-of-type :left :link :local-link :not() :nth-child() :nth-col() :nth-last-child() :nth-last-col() :nth-last-of-type() :nth-of-type() :only-child :only-of-type :optional :out-of-range :past :placeholder-shown :read-only :r...

Viewport concepts - CSS: Cascading Style Sheets
any sub-viewport that is fully or partially displayed within the layout viewport is considered a visual viewport.

animation-name - CSS: Cascading Style Sheets
syntax /* single animation */ animation-name: none; animation-name: test_05; animation-name: -specific; animation-name: sliding-vertically; /* multiple animations */ animation-name: test1, animation4; animation-name: none, -moz-specific, sliding; /* global values */ animation-name: initial animation-name: inherit animation-name: unset values none a special keyword denoting no keyframes.

attr() - CSS: Cascading Style Sheets
color <color> the attribute value is parsed as a hash (3- or 6-value hash) or a keyword.

background-position-x - CSS: Cascading Style Sheets
≤37chrome android full support 18firefox android full support 49opera android full support 18safari ios full support 1samsung internet android full support 1.0two-value syntax (support for offsets from any edge)chrome no support noedge no support 12 — 79firefox full support 49ie full support 9opera no support nosafari no support ...

background-position-y - CSS: Cascading Style Sheets
≤37chrome android full support 18firefox android full support 49opera android full support 14safari ios full support 1samsung internet android full support 1.0two-value syntax (support for offsets from any edge)chrome no support noedge no support 12 — 79firefox full support 49ie full support 9opera no support nosafari no support ...

calc() - CSS: Cascading Style Sheets
formal syntax calc( <calc-sum> )where <calc-sum> = <calc-product> [ [ '+' | '-' ] <calc-product> ]*where <calc-product> = <calc-value> [ '*' <calc-value> | '/' <number> ]*where <calc-value> = <number> | <dimension> | <percentage> | ( <calc-sum> ) accessibility concerns when calc() is used for controlling text size, be sure that one of the values includes a relative length unit, for example: h1 { font-size: calc(1.5rem + 3vw); } this ensures that text size will scale if the page is zoomed.

clamp() - CSS: Cascading Style Sheets
formal syntax clamp( <calc-sum>#{3} )where <calc-sum> = <calc-product> [ [ '+' | '-' ] <calc-product> ]*where <calc-product> = <calc-value> [ '*' <calc-value> | '/' <number> ]*where <calc-value> = <number> | <dimension> | <percentage> | ( <calc-sum> ) examples min, max, and clamp comparison in this example we have a simple responsive example that makes use of min(), max(), and clamp() for some of the sizes.

Computed value - CSS: Cascading Style Sheets
specifications specification status comment css level 2 (revision 2)the definition of 'computed-value' in that specification.

conic-gradient() - CSS: Cascading Style Sheets
the values for the position are similar to the syntax for 2-value background-position.

<display-listitem> - CSS: Cascading Style Sheets
note: in browsers that support the two-value syntax, if no inner value is specified it will default to flow.

env() - CSS: Cascading Style Sheets
formal syntax env( <custom-ident> , <declaration-value>?

inset - CSS: Cascading Style Sheets
it has the same multi-value syntax of the margin shorthand.

mask-size - CSS: Cascading Style Sheets
/* keywords syntax */ mask-size: cover; mask-size: contain; /* one-value syntax */ /* the width of the image (height set to 'auto') */ mask-size: 50%; mask-size: 3em; mask-size: 12px; mask-size: auto; /* two-value syntax */ /* first value: width of the image, second value: height */ mask-size: 50% auto; mask-size: 3em 25%; mask-size: auto 6px; mask-size: auto auto; /* multiple values */ /* do not confuse this with mask-size: auto auto */ mask-size: auto, auto; mask-size: 50%, 25%, 25%; mask-size: 6px, auto, contain; /* global values */ mask-size: inherit; mask-size: initial; mask-size: unset; note: if the value of thi...

max() - CSS: Cascading Style Sheets
formal syntax max( <calc-sum># )where <calc-sum> = <calc-product> [ [ '+' | '-' ] <calc-product> ]*where <calc-product> = <calc-value> [ '*' <calc-value> | '/' <number> ]*where <calc-value> = <number> | <dimension> | <percentage> | ( <calc-sum> ) examples setting a minimum size for a font another use case for css functions is allow a font size to grow while ensuring it is at least a mimum size, enabling responsive font sizes while ensuring legibility.

min() - CSS: Cascading Style Sheets
formal syntax min( <calc-sum># )where <calc-sum> = <calc-product> [ [ '+' | '-' ] <calc-product> ]*where <calc-product> = <calc-value> [ '*' <calc-value> | '/' <number> ]*where <calc-value> = <number> | <dimension> | <percentage> | ( <calc-sum> ) accessibility concerns when using min() to set a maximum font size, ensure that the font can still be scaled at least 200% for readability (without assistive technology like a zoom function).

object-position - CSS: Cascading Style Sheets
full support 19 full support 19 full support 12prefixed prefixed implemented with the vendor prefix: -o-safari ios full support 10samsung internet android full support 2.0support for three-value syntax of positionchrome no support 31 — 68edge no support 16 — 79firefox no support 36 — 70ie no support noopera no support 19 — 55 no support 19 — 55 full support ...

offset-anchor - CSS: Cascading Style Sheets
note that the 3-value position syntax does not work for any usage of <position>, except for in background(-position).

order - CSS: Cascading Style Sheets
order must not be used on non-visual media such as speech.

outline - CSS: Cascading Style Sheets
as with all shorthand properties, any omitted sub-values will be set to their initial value.

overflow - CSS: Cascading Style Sheets
-moz-scrollbars-vertical [1] use overflow-x: hidden and overflow-y: scroll, or overflow: scroll hidden instead.

perspective - CSS: Cascading Style Sheets
orthand classes for different perspective values */ .pers250 { perspective: 250px; } .pers350 { perspective: 350px; } .pers500 { perspective: 500px; } .pers650 { perspective: 650px; } /* define the container div, the cube div, and a generic face */ .container { width: 200px; height: 200px; margin: 75px 0 0 75px; border: none; } .cube { width: 100%; height: 100%; backface-visibility: visible; perspective-origin: 150% 150%; transform-style: preserve-3d; } .face { display: block; position: absolute; width: 100px; height: 100px; border: none; line-height: 100px; font-family: sans-serif; font-size: 60px; color: white; text-align: center; } /* define each face based on direction */ .front { background: rgba(0, 0, 0, 0.3); transform: translat...

repeating-conic-gradient() - CSS: Cascading Style Sheets
the values for the position are similar to the syntax for 2-value background-position.

scroll-margin-inline-start - CSS: Cascading Style Sheets
last of all we specify the scroll margin-values, a different one for the second and third child elements: .scroller > div:nth-child(2) { scroll-margin-inline-start: 1rem; } .scroller > div:nth-child(3) { scroll-margin-inline-start: 2rem; } this means that when scrolling past the middle child elements, the scrolling will snap to 1rem outside the inline start edge of the second <div>, and 2rems outside the inline start edge of the th...

scroll-margin - CSS: Cascading Style Sheets
last of all we specify the scroll margin-values, a different one for the second and third child elements: .scroller > div:nth-child(2) { scroll-margin: 1rem; } .scroller > div:nth-child(3) { scroll-margin: 2rem; } this means that when scrolling past the middle child elements, the scrolling will snap to 1rem outside the left edge of the second <div>, and 2rems outside the left edge of the third <div>.

text-orientation - CSS: Cascading Style Sheets
use-glyph-orientation on svg elements, this keyword leads to use the value of the deprecated svg properties glyph-orientation-vertical and glyph-orientation-horizontal.

text-overflow - CSS: Cascading Style Sheets
formal definition initial valueclipapplies toblock container elementsinheritednocomputed valueas specifiedanimation typediscrete formal syntax [ clip | ellipsis | <string> ]{1,2} examples css p { width: 200px; border: 1px solid; padding: 2px 5px; /* both of the following are required for text-overflow */ white-space: nowrap; overflow: hidden; } .overflow-visible { white-space: initial; } .overflow-clip { text-overflow: clip; } .overflow-ellipsis { text-overflow: ellipsis; } .overflow-string { /* not supported in most browsers, see the 'browser compatibility' section below */ text-overflow: " [..]"; } html <p class="overflow-visible">lorem ipsum dolor sit amet, consectetur adipisicing elit.</p> <p class="overflow-clip">lorem ips...

matrix3d() - CSS: Cascading Style Sheets
transform-style: preserve-3d; transition: transform 1.5s; transform: rotate3d(1, 1, 1, 30deg); margin: 50px auto; } #example-element:hover, #example-element:focus { transform: rotate3d(1, 1, 1, 30deg) matrix3d(1,0,0,0,0,1,6,0,0,0,1,0,50,100,0,1.1); } .face { display: flex; align-items: center; justify-content: center; width: 100%; height: 100%; position: absolute; backface-visibility: inherit; font-size: 60px; color: #fff; } .front { background: rgba(90,90,90,.7); transform: translatez(50px); } .back { background: rgba(0,210,0,.7); transform: rotatey(180deg) translatez(50px); } .right { background: rgba(210,0,0,.7); transform: rotatey(90deg) translatez(50px); } .left { background: rgba(0,0,210,.7); transform: rotatey(-90deg) translatez...

<transform-function> - CSS: Cascading Style Sheets
px; height: 200px; padding: 50px; background-image: linear-gradient(135deg, white, cyan, white); } #example-element { width: 100px; height: 100px; transform-style: preserve-3d; transition: transform 1.5s; transform: rotate3d(1, 1, 1, 30deg); } .face { display: flex; align-items: center; justify-content: center; width: 100%; height: 100%; position: absolute; backface-visibility: inherit; font-size: 60px; color: #fff; } .front { background: rgba(90,90,90,.7); transform: translatez(50px); } .back { background: rgba(0,210,0,.7); transform: rotatey(180deg) translatez(50px); } .right { background: rgba(210,0,0,.7); transform: rotatey(90deg) translatez(50px); } .left { background: rgba(0,0,210,.7); transform: rotatey(-90deg) translatez...