Index - Web APIs
26 accelerometer.x api, accelerometer, accelerometer api, generic sensor api, property, reference, sensor, sensor apis, sensors, x the x read-only property of the accelerometer interface returns a double precision integer containing the acceleration of the device along the its x axis.
... 27 accelerometer.y api, accelerometer, accelerometer api, generic sensor api, property, reference, sensor, sensor apis, sensors, y the y read-only property of the accelerometer interface returns a double precision integer containing the acceleration of the device along the its y axis.
... 28 accelerometer.z api, accelerometer, accelerometer api, generic sensor api, property, reference, sensor, sensor apis, sensors, z the z read-only property of the accelerometer interface returns a double precision integer containing the acceleration of the device along the its z axis.
...And 55 more matches

Index
19 double_to_jsval jsapi reference, obsolete, spidermonkey double_to_jsval is the inverse of js::tonumber.
... 39 js::doublenanvalue jsapi reference, reference, référence(2), spidermonkey js::doublenanvalue returns a value of type js::value that represents an ieee floating-point quiet not-a-number (nan).
... 40 js::doublevalue jsapi reference, reference, référence(2), spidermonkey js::doublevalue converts a c floating-point number of type double to js::value, the type of javascript values.
...And 19 more matches

nsIVariant
double getasdouble(); native code only!
...return value if possible, the internal value is converted to a double, which is then compared to zero.
...return value if the internal value is a string, it is first converted to a double, if possible.
...And 14 more matches

MediaTrackConstraints - Web APIs
latency a constraindouble specifying the latency or range of latencies which are acceptable and/or required.
... volume a constraindouble specifying the volume or range of volumes which are acceptable and/or required.
...this is either an object in the form { x:value, y:value } or an array of such objects, where value is a double-precision integer.
...And 11 more matches

LiveConnect Overview - Archive of obsolete content
you can specify an environment variable in windows nt by double-clicking the system icon in the control panel and creating a user environment variable called classpath with a value similar to the following: c:\program files\java\jre1.4.1\lib\plugin.jar see the sun jdk documentation for more information about classpath.
...number values when you pass javascript number types as parameters to java methods, java converts the values according to the rules described in the following table: java parameter type conversion rules double the exact value is transferred to java without rounding and without a loss of magnitude or sign.
... java.lang.double java.lang.object a new instance of java.lang.double is created, and the exact value is transferred to java without rounding and without a loss of magnitude or sign.
...And 10 more matches

nsIAnnotationService
ing aname, in long avalue, in long aflags, in unsigned short aexpiration); void setpageannotationint64(in nsiuri auri, in autf8string aname, in long long avalue, in long aflags, in unsigned short aexpiration); void setitemannotationint64(in long long aitemid, in autf8string aname, in long long avalue, in long aflags, in unsigned short aexpiration); void setpageannotationdouble(in nsiuri auri, in autf8string aname, in double avalue, in long aflags, in unsigned short aexpiration); void setitemannotationdouble(in long long aitemid, in autf8string aname, in double avalue, in long aflags, in unsigned short aexpiration); void setpageannotationbinary(in nsiuri auri, in autf8string aname,[const, array, size_is(adatalen)] in octet adata, in unsigned long adata...
...temannotationstring(in long long aitemid, in autf8string aname); long getpageannotationint32(in nsiuri auri, in autf8string aname); long getitemannotationint32(in long long aitemid, in autf8string aname); long long getpageannotationint64(in nsiuri auri, in autf8string aname); long long getitemannotationint64(in long long aitemid, in autf8string aname); double getpageannotationdouble(in nsiuri auri, in autf8string aname); double getitemannotationdouble(in long long aitemid, in autf8string aname); void getpageannotationbinary(in nsiuri auri, in autf8string aname,[array, size_is(adatalen)] out octet adata, out unsigned long adatalen, out autf8string amimetype); void getitemannotationbinary(in long long aitemid, in autf8string a...
... type_double 2 double type constant.
...And 10 more matches

TextMetrics - Web APIs
properties textmetrics.width read only is a double giving the calculated width of a segment of inline text in css pixels.
... textmetrics.actualboundingboxleft read only is a double giving the distance from the alignment point given by the canvasrenderingcontext2d.textalign property to the left side of the bounding rectangle of the given text, in css pixels.
... textmetrics.actualboundingboxright read only is a double giving the distance from the alignment point given by the canvasrenderingcontext2d.textalign property to the right side of the bounding rectangle of the given text, in css pixels.
...And 9 more matches

LIR - Archive of obsolete content
5 allocp pointer allocate stack space (result is an address) 6 reti void return an int 7 retq void 64 bit return a quad 8 retd void return a double 9 livei void extend live range of an int 10 liveq void 64 bit extend live range of a quad 11 lived void extend live range of a double 12 file void source filename for debug symbols 13 line void source line number for debug symbols 14 comment void a comment shown, on its own line, in lir dumps 15 not in use ...
...17 ldc2i integer load char and sign-extend to an int 18 lds2i integer load short and sign-extend to an int 19 lduc2ui integer load unsigned char and zero-extend to an unsigned int 20 ldus2ui integer load unsigned short and zero-extend to an unsigned int 21 ldi integer load int 22 ldq quad 64 bit load quad 23 ldd double load double 24 ldf2d double load float and extend to a double store 25 sti2c void store int truncated to char 26 sti2s void store int truncated to short 27 sti void store int 28 stq void 64 bit store quad 29 std void store double 30 std2f void store double as a float (losing precision) 31 ...
... not in use call 32 not in use 33 callv void call subroutine that returns void 34 calli integer call subroutine that returns an int 35 callq quad 64 bit call subroutine that returns a quad 36 calld double call subroutine that returns a double branch 37 j void jump always 38 jt void jump if true 39 jf void jump if false 40 jtbl void jump to address in table 41 label void a jump target (no machine code is emitted for this) 42 not in use guards 43 x void exit always 44 xt void exit if true 45 xf void exit if false 46 xtbl void exit via indirect jump 47 xbarrier ...
...And 8 more matches

Mobile accessibility - Learn web development
double-tapping anywhere will open the app/select the option.
... you can also explore by touch to find the unlock button at the bottom middle of the screen, and then double-tap.
... once you've selected the option you want, double-click to choose that option.
...And 8 more matches

SpiderMonkey 1.8.5
js_newdouble, js_newdoublevalue, and js_newnumbervalue are gone.
... instead use double_to_jsval, int_to_jsval, and uint_to_jsval, which are faster and can't fail.
... since jsdoubles are now stored in the jsval, instead of on the heap, we no longer need to define roots for them.
...And 8 more matches

HTMLMediaElement - Web APIs
htmlmediaelement.currenttime a double-precision floating-point value indicating the current playback time in seconds; if the media has not started to play and has not been seeked, this value is the media's initial playback time.
... htmlmediaelement.defaultplaybackrate a double indicating the default playback rate for the media.
... htmlmediaelement.duration read only a read-only double-precision floating-point value indicating the total duration of the media in seconds.
...And 6 more matches

SpiderMonkey 1.8.7
since jsdoubles are now stored in the jsval, instead of on the heap, we no longer need to define roots for them.
...jsapi no longer represents floating-point numbers (and integers more than 31 bits long) as pointers to jsdouble; instead, the jsdouble value is directly stored in the jsval.
... this affects macros like double_to_jsval and jsval_to_double, which now operate directly on jsdouble rather than jsdouble pointers.
...And 5 more matches

WebIDL bindings
for example, this webidl: interface myinterface { void dosomething(long number); double dosomething(myinterface?
... otherinstance); [throws] myinterface dosomethingelse(optional long maybenumber); [throws] void dosomethingelse(myinterface otherinstance); void dotheother(any something); void doyetanotherthing(optional boolean actuallydoit = false); static void staticoperation(any arg); }; will require these method declarations: class myclass { void dosomething(int32_t anumber); double dosomething(myclass* aotherinstance); already_addrefed<myinterface> dosomethingelse(optional<int32_t> amaybenumber, errorresult& rv); void dosomethingelse(myclass& aotherinstance, errorresult& rv); void dotheother(jscontext* cx, js::value asomething); void doyetanotherthing(bool aactuallydoit); static void staticoperation(const globalobject& a...
... int8_t int8_t bytestring const nsacstring& nscstring& (outparam) nsacstring& (outparam) nscstring date mozilla::dom::date domstring const nsastring& mozilla::dom::domstring& (outparam) nsastring& (outparam) nsstring& (outparam) nsstring utf8string const nsacstring& nsacstring& (outparam) nscstring double double double double float float float float interface: non-nullable foo& already_addrefed<foo> foo* owningnonnull<foo> interface: nullable foo* already_addrefed<foo> foo* refptr<foo> long int32_t int32_t int32_t long long int64_t int64_t int64_t object js::handle<jsobj...
...And 5 more matches

Eclipse CDT
if you click the yellow, double arrow button at the top of the project explorer tab on the left, it will keep the selected file in the project explorer tab in sync with the file that you're currently editing.
...if you select one of these classes, then in the method pane to the right the method you searched for will be highlighted (you may need to scroll to it) - double click to see its definition.
...double click on a class to go straight to its override's definition.
...And 4 more matches

nsIDOMGeoPositionCoords
last changed in gecko 1.9.1 (firefox 3.5 / thunderbird 3.0 / seamonkey 2.0) inherits from: nsisupports attributes attribute type description latitude double the user's current latitude, in degrees.
... longitude double the user's current longitude, in degrees.
... altitude double the user's current altitude, in meters.
...And 4 more matches

GeolocationCoordinates - Web APIs
geolocationcoordinates.latitude read only secure context returns a double representing the position's latitude in decimal degrees.
... geolocationcoordinates.longitude read only secure context returns a double representing the position's longitude in decimal degrees.
... geolocationcoordinates.altitude read only secure context returns a double representing the position's altitude in meters, relative to sea level.
...And 4 more matches

Value definition syntax - CSS: Cascading Style Sheets
bold <length> , thin this example matches the following values: bold 1em, thin bold 0, thin bold 2.5cm, thin bold 3vh, thin but not: thin 1em, bold, as the entities must be in the expressed order bold 1em thin, as the entities are mandatory; the comma, a literal, must be present bold 0.5ms, thin, as the ms values are not <length> double ampersand separating two or more components, by a double ampersand, &&, means that all these entities are mandatory but may appear in any order.
... note: juxtaposition has precedence over the double ampersand, meaning that bold thin && <length> is equivalent to [ bold thin ] && <length>.
... double bar separating two or more components by a double bar, ||, means that all entities are options: at least one of them must be present, and they may appear in any order.
...And 4 more matches

Equality comparisons and sameness - JavaScript
%typedarray% and arraybuffer constructors, as well as map and set operations, and also string.prototype.includes and array.prototype.includes since es2016 samevalue: used in all other places javascript provides three different value-comparison operations: === - strict equality comparison ("strict equality", "identity", "triple equals") == - abstract equality comparison ("loose equality", "double equals") object.is provides samevalue (new in es2015).
...briefly: double equals (==) will perform a type conversion when comparing two things, and will handle nan, -0, and +0 specially to conform to ieee 754 (so nan != nan, and -0 == +0); triple equals (===) will do the same comparison as double equals (including the special handling for nan, -0, and +0) but without type conversion; if the types differ, false is returned.
... we can see that with double and triple equals, with the exception of doing a type check upfront in 11.9.6.1, the strict equality algorithm is a subset of the abstract equality algorithm, because 11.9.6.2–7 correspond to 11.9.3.1.a–f.
...And 4 more matches

NPVariant - Archive of obsolete content
syntax typedef struct _npvariant { npvarianttype type; union { bool boolvalue; int32_t intvalue; double_t doublevalue; npstring stringvalue; npobject *objectvalue; } value; } npvariant; fields the data structure has the following fields: type a member of the npvarianttype enumeration specifying the data type contained in the npvariant.
...it may be a boolean, integer, double, string, or object, depending on the variant type.
...ing npvariants to access javascript objects in the browser, or vise versa, the mapping of javascript values to npvariants is as follows: javascript type npvarianttype undefined npvarianttype_void null npvarianttype_null boolean npvarianttype_bool number npvarianttype_int32 or npvarianttype_double string npvarianttype_string all other types npvarianttype_object functions npn_releasevariantvalue() npn_getstringidentifier() npn_getstringidentifiers() npn_getintidentifier() npn_identifierisstring() npn_utf8fromidentifier() npn_intfromidentifier() macros plugin developers are not expected to directly manipulate or access...
...And 3 more matches

JS::Value
accessors mutators null val.isnull() js::nullvalue() n/a val.setnull() undefined val.isundefined() js::undefinedvalue() n/a val.setundefined() boolean val.isboolean(), val.istrue(), val.isfalse() js::booleanvalue(bool), js::truevalue(), js::falsevalue() val.toboolean() val.setboolean(bool) number val.isint32(), val.isdouble(), val.isnumber() js::numbervalue(any number type), js::int32value(int32_t), js::doublevalue(double), js::float32value(float) val.toint32(), val.todouble(), val.tonumber() val.setint32(int32_t), val.setnumber(uint32_t), val.setnumber(double) string val.isstring() js::stringvalue(jsstring*) val.tostring() val.setstring(jsstring *) object val.isobject() ...
...js::objectvalue(jsobject&amp;), js::objectornullvalue(jsobject*) val.toobject() val.setobject(jsobject &) symbol val.issymbol() js::symbolvalue(js::symbol*) val.tosymbol() val.setsymbol(js::symbol &) numbers are stored in a js::value either as a double or as an int32_t.
... the different representations are visible using the separate int32/double methods but do not affect observable semantics (ignoring performance).
...And 3 more matches

JSAPI reference
r obsolete since jsapi 29 values and types typedef jsval js::value js::value constructors: js::nullvalue added in spidermonkey 24 js::undefinedvalue added in spidermonkey 24 js::booleanvalue added in spidermonkey 24 js::truevalue added in spidermonkey 24 js::falsevalue added in spidermonkey 24 js::numbervalue added in spidermonkey 24 js::int32value added in spidermonkey 24 js::doublevalue added in spidermonkey 24 js::float32value added in spidermonkey 24 js::stringvalue added in spidermonkey 24 js::objectvalue added in spidermonkey 24 js::objectornullvalue added in spidermonkey 24 js::symbolvalue added in spidermonkey 38 js::value constants: js::nullhandlevalue added in spidermonkey 24 js::undefinedhandlevalue added in spidermonkey 24 js::truehandlevalue added in ...
... jsval_is_null obsolete since jsapi 32 jsval_is_void obsolete since jsapi 32 jsval_is_boolean obsolete since jsapi 32 jsval_is_number obsolete since jsapi 32 jsval_is_int obsolete since jsapi 32 jsval_is_double obsolete since jsapi 32 jsval_is_string obsolete since jsapi 32 jsval_is_object obsolete since jsapi 15 jsval_is_primitive obsolete since jsapi 32 jsval_is_gcthing obsolete since jsapi 32 high-level type-conversion routines for packing and unpacking function arguments.
... boolean_to_jsvalobsolete since jsapi 42 int_to_jsval obsolete since jsapi 42 double_to_jsvalobsolete since jsapi 42 object_to_jsvalobsolete since jsapi 42 string_to_jsvalobsolete since jsapi 42 private_to_jsvalobsolete since jsapi 42 int_fits_in_jsval obsolete since javascript 1.8.5 jsval_to_boolean obsolete since jsapi 32 jsval_to_int obsolete since jsapi 32 jsval_to_double obsolete since jsapi 32 jsval_to_object obsolete since jsapi 32 jsval_to_string obsolete sinc...
...And 3 more matches

mozIStorageBindingParams
method overview void bindbyindex(in unsigned long aindex, in nsivariant avalue); void bindblobbyindex(in unsigned long aindex, [array, const, size_is(avaluesize)] in octet avalue, in unsigned long avaluesize); void binddoublebyindex(in unsigned long aindex, in double avalue); native code only!
... void bindbyname(in autf8string aname, in nsivariant avalue); void bindblobbyname(in autf8string aname, [array, const, size_is(avaluesize)] in octet avalue, in unsigned long avaluesize); void binddoublebyname(in autf8string aname, in double avalue); native code only!
... native code only!binddoublebyindex binds a double to the specified index.
...And 3 more matches

nsIDOMWindowUtils
to get this interface, use: var domwindowutils = window.windowutils; method overview void activatenativemenuitemat(in astring indexstring); void clearmozafterpaintevents(); pruint32 comparecanvases(in nsidomhtmlcanvaselement acanvas1, in nsidomhtmlcanvaselement acanvas2, out unsigned long amaxdifference); double computeanimationdistance(in nsidomelement element, in astring property, in astring value1, in astring value2); nsicompositionstringsynthesizer createcompositionstringsynthesizer(); obsolete since gecko 38.0 void disablenontestmouseevents(in boolean adisable); boolean dispatchdomeventviapresshell(in nsidomnode atarget, in nsidomevent aevent, in boolean atrusted); ...
...ttowindow(in astring atype, in float ax, in float ay, in long abutton, in long aclickcount, in long amodifiers, [optional] in boolean aignorerootscrollframe); void sendmousescrollevent(in astring atype, in float ax, in float ay, in long abutton, in long ascrollflags, in long adelta, in long amodifiers); obsolete since gecko 17.0 void sendwheelevent(in float ax, in float ay, in double adeltax, in double adeltay, in double adeltaz, in unsigned long adeltamode, in long amodifiers, in long alineorpagedeltax, in long alineorpagedeltay, in unsigned long aoptions); void sendnativekeyevent(in long anativekeyboardlayout, in long anativekeycode, in long amodifierflags, in astring acharacters, in astring aunmodifiedcharacters); void sendnativemouseevent(in long ascre...
...lags); boolean sendselectionsetevent(in unsigned long aoffset, in unsigned long alength, in boolean areverse); obsolete since gecko 31.0 boolean sendselectionsetevent(in unsigned long aoffset, in unsigned long alength, [optional] in unsigned long aadditionalflags); void sendsimplegestureevent(in astring atype, in float ax, in float ay, in unsigned long adirection, in double adelta, in long amodifiers); void sendtextevent(in astring acompositionstring, in long afirstclauselength, in unsigned long afirstclauseattr, in long asecondclauselength, in unsigned long asecondclauseattr, in long athirdclauselength, in unsigned long athirdclauseattr, in long acaretstart, in long acaretlength); obsolete since gecko 26 boolean sendtouchevent(in astring atype, [...
...And 3 more matches

HTMLMeterElement - Web APIs
htmlmeterelement.high a double representing the value of the high boundary, reflecting the high attribute.
... htmlmeterelement.low a double representing the value of the low boundary, reflecting the lowattribute.
... htmlmeterelement.max a double representing the maximum value, reflecting the max attribute.
...And 3 more matches

PannerNode - Web APIs
pannernode.coneinnerangle is a double value describing the angle, in degrees, of a cone inside of which there will be no volume reduction.
... pannernode.coneouterangle a double value describing the angle, in degrees, of a cone outside of which the volume will be reduced by a constant value, defined by the coneoutergain attribute.
... pannernode.coneoutergain a double value describing the amount of volume reduction outside the cone defined by the coneouterangle attribute.
...And 3 more matches

Touch() - Web APIs
"clientx", optional and defaulting to 0, of type double, that is the horizontal position of the touch on the client window of user's screen, excluding any scroll offset.
... "clienty", optional and defaulting to 0, of type double, that is the vertical position of the touch on the client window of the user's screen, excluding any scroll offset.
... "screenx", optional and defaulting to 0, of type double, that is the horizontal position of the touch on the user's screen.
...And 3 more matches

VTTRegion - Web APIs
vttregion.width a double representing the width of the region, as a percentage of the video.
... vttregion.lines a double representing the height of the region, in number of lines.
... vttregion.regionanchorx a double representing the region anchor x offset, as a percentage of the region.
...And 3 more matches

SpiderMonkey Internals
hence, we can encode any floating-point value as a c++ double (noting that javascript nan must be represented as one canonical nan format).
... other values are encoded as a value and a type tag: on x86, arm, and similar 32-bit platforms, we use what we call "nunboxing", in which non-double values are a 32-bit type tag and a 32-bit payload, which is normally either a pointer or a signed 32-bit integer.
... only jit code really depends on the layout--everything else in the engine interacts with values through functions like val.isdouble().
...And 2 more matches

JSAPI User Guide
these are isobject(), isnumber(), isint32(), isdouble(), isstring(), isboolean(), isnull(), and isundefined().
... if a js::value contains a jsobject, double, or jsstring, you can cast it to its underlying data type using the toobject(), todouble(), and tostring() member functions, respectively.
...similarly, you can create a js::value wrapping a jsobject, double, or jsstring pointer to a js::value using js::objectvalue(jsobject&), js::doublevalue(double), or js::stringvalue(jsstring*).
...And 2 more matches

JS_DefineProperty
32_t value, unsigned attrs, jsnative getter = nullptr, jsnative setter = nullptr); bool js_defineproperty(jscontext *cx, js::handleobject obj, const char *name, uint32_t value, unsigned attrs, jsnative getter = nullptr, jsnative setter = nullptr); bool js_defineproperty(jscontext *cx, js::handleobject obj, const char *name, double value, unsigned attrs, jsnative getter = nullptr, jsnative setter = nullptr); bool js_defineucproperty(jscontext *cx, js::handleobject obj, const char16_t *name, size_t namelen, js::handlevalue value, unsigned attrs, jsnative getter = nullptr, jsnative setter = nullptr); bool js_defineucproperty(jscontext *cx, js::handl...
...tive getter = nullptr, jsnative setter = nullptr); bool js_defineucproperty(jscontext *cx, js::handleobject obj, const char16_t *name, size_t namelen, uint32_t value, unsigned attrs, jsnative getter = nullptr, jsnative setter = nullptr); bool js_defineucproperty(jscontext *cx, js::handleobject obj, const char16_t *name, size_t namelen, double value, unsigned attrs, jsnative getter = nullptr, jsnative setter = nullptr); // ---- added in spidermonkey 45 ---- bool js_definepropertybyid(jscontext *cx, js::handleobject obj, js::handleid id, js::handle<jspropertydescriptor> desc, js::objectopresult &result); bool js_definepropertybyid(jscontext *cx, js::handleobject obj, js:...
... unsigned attrs, jsnative getter = nullptr, jsnative setter = nullptr); bool js_definepropertybyid(jscontext *cx, js::handleobject obj, js::handleid id, uint32_t value, unsigned attrs, jsnative getter = nullptr, jsnative setter = nullptr); bool js_definepropertybyid(jscontext *cx, js::handleobject obj, js::handleid id, double value, unsigned attrs, jsnative getter = nullptr, jsnative setter = nullptr); name type description cx jscontext * the context in which to define the property.
...And 2 more matches

JavaScript data types and data structures - JavaScript
the number type is a double-precision 64-bit binary format ieee 754 value (numbers between -(253 − 1) and 253 − 1).
... starting with ecmascript 2015, you are also able to check if a number is in the double-precision floating-point number range using number.issafeinteger() as well as number.max_safe_integer and number.min_safe_integer.
... beyond this range, integers in javascript are not safe anymore and will be a double-precision floating point approximation of the value.
...And 2 more matches

Grammar and types - JavaScript
var re = /ab+c/; string literals a string literal is zero or more characters enclosed in double (") or single (') quotation marks.
... a string must be delimited by quotation marks of the same type (that is, either both single quotation marks, or both double quotation marks).
...template literals are enclosed by the back-tick (`) (grave accent) character instead of double or single quotes.
...And 2 more matches

SyntaxError: unterminated string literal - JavaScript
string literals must be enclosed by single (') or double (") quotes.
...string literals must be enclosed by single (') or double (") quotes.
... javascript makes no distinction between single-quoted strings and double-quoted strings.
...And 2 more matches

More Event Handlers - Archive of obsolete content
dblclick called when the a mouse button is double clicked.
...this allows you to check for single, double or triple clicks.
... of course, if you just want to check for double clicks, you can also use the dblclick event instead.
... the click event will be fired once for the first click, again for the second click, and again for the third click, but the dblclick event will only be fired once for a double click.

Styling the Amazing Netscape Fish Cam Page - Archive of obsolete content
i then set up a thicker double border on the left, a one-pixel border the rest of the way around, and set the background to match the rest of the design.
... thus: div.card {float: left; width: 45%; margin: 1em 2% 0 2%;} div.card img {float: left; margin: 4px 0 0 0; border: 1px solid #339;} div.card h3 {border: 1px solid #339; border-left: 5px double #339; background: #eec url(body-bg-tan.jpg) bottom left no-repeat fixed; color: #339;} finishing the style adding the background to the heading containing the name of the fish created three problems: the double border was completely covered up by the image.
... div.card {float: left; width: 45%; margin: 1em 2% 0 2%;} div.card img {float: left; position: relative; z-index: 10; margin: 4px 0 0 0; border: 1px solid #339;} div.card h3 {margin: 0 0 0 4px; padding: 0.2em 0 1px 150px; border: 1px solid #339; border-left: 5px double #339; background: #eec url(body-bg-tan.jpg) bottom left no-repeat fixed; color: #339;} note how the image is pushed downward four pixels, while the h3 is pushed rightward four pixels.
... div.card {float: left; width: 45%; margin: 1em 2% 0 2%;} div.card img {float: left; position: relative; z-index: 10; margin: 4px 0 0 0; border: 1px solid #339;} div.card h3 {margin: 0 0 0 4px; padding: 0.2em 0 1px 150px; border: 1px solid #339; border-left: 5px double #339; background: #eec url(body-bg-tan.jpg) bottom left no-repeat fixed; color: #339;} div.card p {margin: 0.5em 0.5em 0.5em 160px;} and voila!

Building up a basic demo with PlayCanvas editor - Game development
if you double click on it, you'll be moved to a code editor.
... double click the script icon to launch the code editor.
...create a coneanimation.js file and double click it to open it in the editor.
...dd the following line to the initialize() function: this.timer = 0; to move the cone up and down we will use the setposition() method — add the code below to the update() function: this.timer += dt; this.entity.setposition(2, math.sin(this.timer*2), 0); the position of the cone will be animated on each frame by being passed the math.sin() value of the timer at each point in time — we have doubled the this.timer value to make it move higher.

Index - MDN Web Docs Glossary: Definitions of Web-related terms
in other programming languages different numeric types can exist, for examples: integers, floats, doubles, or bignums.
... 294 number codingscripting, glossary, javascript in javascript, number is a numeric data type in the double-precision 64-bit floating point format (ieee 754).
... in other programming languages different numeric types exist; for example, integers, floats, doubles, or bignums.
... for example, integers, floats, and doubles are implicitly polymorphic: regardless of their different types, they can all be added, subtracted, multiplied, and so on.

Debugging HTML - Learn web development
here, the error message is relatively easy to understand — "unterminated double quote string".
... if you look at the listing, you can probably see how println!(hello, world!"); might logically be missing a double quote.
... the href attribute value is missing a closing double quote.
... the incorrect nesting has been fixed by the browser as shown here: <strong>strong <em>strong emphasised?</em> </strong> <em> what is this?</em> the link with the missing double quote has been deleted altogether.

Getting started with HTML - Learn web development
single or double quotes?
... in this article you will also notice that the attributes are wrapped in double quotes.
...both of these lines are equivalent: <a href="http://www.example.com">a link to my example.</a> <a href='http://www.example.com'>a link to my example.</a> make sure you don't mix single quotes and double quotes.
... example (below) shows a kind of mixing quotes that will go wrong: <a href="http://www.example.com'>a link to my example.</a> however, if you use one type of quote, you can include the other type of quote inside your attribute values: <a href="http://www.example.com" title="isn't this fun?">a link to my example.</a> to use quote marks inside other quote marks of the same type (single quote or double quote), use html entities.

JS_DefineElement
unsigned attrs, jsnative getter = nullptr, jsnative setter = nullptr); bool js_defineelement(jscontext *cx, js::handleobject obj, uint32_t index, uint32_t value, unsigned attrs, jsnative getter = nullptr, jsnative setter = nullptr); bool js_defineelement(jscontext *cx, js::handleobject obj, uint32_t index, double value, unsigned attrs, jsnative getter = nullptr, jsnative setter = nullptr); /* obsolete since jsapi 32 */ js_defineelement(jscontext *cx, jsobject *obj, uint32_t index, jsval value, jspropertyop getter, jsstrictpropertyop setter, unsigned attrs); name type description cx jscontext * the context in which to creat...
... value js::handlevalue or js::handleobject or js::handlestring or int32_t or uint32_t or double or jsval initial value to assign to the property.
...value is one of js::value, jsobject, jsstring, int32_t, uint32_t, or double that defines the property's initial value.
... see also mxr id search for js_defineelement js_defineconstdoubles js_definefunction js_definefunctions js_defineobject js_defineproperties js_defineproperty js_definepropertywithtinyid js_deleteelement js_getarraylength js_getelement js_isarrayobject js_lookupelement js_newarrayobject js_setelement bug 959787 - changed parameter types ...

JS_NewNumberValue
use js_numbervalue instead convert a c floating-point number of type jsdouble to a jsval.
... syntax jsbool js_newnumbervalue(jscontext *cx, jsdouble d, jsval *rval); name type description cx jscontext * the context in which to create the new number.
... d jsdouble the numeric value to convert.
... description js_newnumbervalue converts a c floating-point number of type jsdouble to jsval, the type of javascript values.

JS_NumberValue
this article covers features introduced in spidermonkey 17 convert a c floating-point number of type double to a js::value.
... replacement to js_newnumbervalue, js_newdoublevalue, js_newdouble.
... syntax // added in spidermonkey 42 js::value js_numbervalue(double d); // obsolete since spidermonkey 42 jsval js_numbervalue(double d); name type description d double the numeric value to convert.
... description js_numbervalue converts a c floating-point number of type double to js::value, the type of javascript values.

Secure Development Guidelines
n check the bounds of your arrays use a safe and well-designed api when using integers as array indexes, use caution format string bugs example: int main(int argc, char *argv[]) { if (argc > 1) printf(argv[1]); } format string bugs: prevention easy to fix: always use a format string specifier: int main(int argc, char *argv[]) { if (argc > 1) printf("%s", argv[1]); } double free example: void* ptr = malloc(1024); if (error) { free(ptr); } free(ptr); double free: prevention set a pointer to null when it’s freed valgrind or malloc debugging can help detect those bugs use after free accessing data after a free() or delete can lead to undefined behavior some debug tools might be able catch some cases un-initialized data example: int main...
... it would lead to a double free race conditions: prevention be very careful when working with threads, the file system, or signals track down shared resources and lock them accordingly for signal handlers never use non-atomic operations longjmp() is a sign of badness even exit() could cause problems, but _exit() is okay deadlocks and locking issues locks are used when dealing with th...
...er overflows and 0-termination issues every string derived from the abstract base class nsastring common read-only methods length() isempty() equals() common methods for modifying the string assign() append() insert() truncate() checking return values often causes problems return value not handled certain cases not handled or interpreted incorrectly double meaning malloc() can return a pointer or null, but null by itself is a valid address checking return values int main() { int fds[2]; pipe(fds); write(fds[0], "data", 4); } the pipe() return value is not checked if pipe() fails, fds is not initialized write to un-initialized file descriptor checking return values check all return values—no matter how unlik...
...ely the api failure for example: close() can fail and leak file descriptor setuid() can fail and privileges don’t get dropped snprintf() can fail and result in return value -1 tmp = realloc(tmp, size) — realloc could fail and leak tmp writing secure code: exception handling double freeing pointers double frees can occur in exception handling they free data in try block and then free it again in the catch block this is a common issue double freeing pointers char *ptr1 = null, *ptr2 = null; try { ptr1 = new char[1024]; do_something(); delete ptr1; do_something_else(); ptr2 = new char[-1] // oom } catch (...) { delete ptr1; delete ptr2; } new will throw an exception — ptr1 is already freed in the try block then freed aga...

Using the Places annotation service
from c++ you must use the setter for the explicit data type being saved: setpageannotationstring(auri, aname, avalue, aflags, aexpiration); setpageannotationint32(auri, aname, avalue, aflags, aexpiration); setpageannotationint64(auri, aname, avalue, aflags, aexpiration); setpageannotationdouble(auri, aname, avalue, aflags, aexpiration); setpageannotationbinary(auri, aname, adata, adatalen, aflags, aexpiration); and likewise for items in the places database: setitemannotationstring(aitemid, aname, avalue, aflags, aexpiration); setitemannotationint32(aitemid, aname, avalue, aflags, aexpiration); setitemannotationint64(aitemid, aname, avalue, aflags, aexpiration); setitemannotatio...
...ndouble(aitemid, aname, avalue, aflags, aexpiration); setitemannotationbinary(aitemid, aname, avalue, adatalen, aflags, aexpiration); from javascript there are two simple function to perform all of these operations: setpageannotation(auri, aname, avalue, aflags, aexpiration); setitemannotation(aitemid, aname, avalue, aflags, aexpiration); these annotations all take similar parameters: uri or itemid: this is the nsiuri of the page to annotate, or for items in the places database, the id of the item.
... annotationservice.setpageannotation(uri, "my_extension/some_annotation", "this is the annotation value", 0, 0); retrieving annotations there are corresponding getters for the setters above (see nsiannotationservice.idl for the exact declarations): from c++: getpageannotationstring(auri, aname); getpageannotationint32(auri, aname); getpageannotationint64(auri, aname); getpageannotationdouble(auri, aname); getpageannotationbinary(auri, aname, adata, adatalen, amimetype); getitemannotationstring(aitemid, aname); getitemannotationint32(aitemid, aname); getitemannotationint64(aitemid, aname); getitemannotationdouble(aitemid, aname); getitemannotationbinary(aitemid, aname, adata, adatalen, amimetype); from javascript: getpageannotation(auri, aname); getitemannotation(aitemi...
...tioninfo(auri, aname, aflags, aexpiration, amimetype, atype) getitemannotationinfo(aitemid, aname, aflags, aexpiration, amimetype, atype) getpageannotationtype(auri, aname); getitemannotationtype(aitemid, aname); the returned type will be one of the value_type constants in mozistoragevaluearray.idl: after bug 377066 the value_type_* type handling was changed to this: type_int32 = 1 type_double = 2 type_string = 3 type_binary = 4 type_int64 = 5 try { var value = annotationservice.getpageannotation(uri, "my_extension/some_annotation"); } catch(e) { // annotation does not exist } other functions getpageswithannotation(aname, resultcount, results); getitemswithannotation(aname, resultcount, results); retrieves a list of all pages/items with the given annotation.

mozIStorageValueArray
last changed in gecko 1.8 (firefox 1.5 / thunderbird 1.5 / seamonkey 1.0) inherits from: nsisupports method overview long gettypeofindex(in unsigned long aindex); long getint32(in unsigned long aindex); long long getint64(in unsigned long aindex); double getdouble(in unsigned long aindex); autf8string getutf8string(in unsigned long aindex); astring getstring(in unsigned long aindex); void getblob(in unsigned long aindex, out unsigned long adatasize, [array,size_is(adatasize)] out octet adata); boolean getisnull(in unsigned long aindex); attributes attribute type description numen...
... getdouble() obtains a double from the specified index.
... double getdouble( in unsigned long aindex ); parameters aindex the zero-based numerical index for the column to get the data from.
... return value the double for the specified entry.

nsIAccessibleValue
inherits from: nsisupports last changed in gecko 1.9 (firefox 3) method overview boolean setcurrentvalue(in double value); obsolete since gecko 1.9 attributes attribute type description currentvalue double maximumvalue double read only.
... minimumincrement double read only.
... minimumvalue double read only.
...boolean setcurrentvalue( in double value ); parameters value new value for current value.

nsIBinaryInputStream
ruint32 read32(); pruint64 read64(); unsigned long readarraybuffer(in pruint32 alength, in jsval aarraybuffer); prbool readboolean(); void readbytearray(in pruint32 alength, [array, size_is(alength), retval] out pruint8 abytes); void readbytes(in pruint32 alength, [size_is(alength), retval] out string astring); acstring readcstring(); double readdouble(); float readfloat(); astring readstring(); void setinputstream(in nsiinputstream ainputstream); methods read8() reads from the stream.
... readdouble() reads from the stream.
... double readdouble(); parameters none.
... return value a double read from the stream.

nsIDOMOrientationEvent
last changed in gecko 1.9.2 (firefox 3.6 / thunderbird 3.1 / fennec 1.0) inherits from: nsidomevent method overview void initorientationevent(in domstring eventtypearg, in boolean canbubblearg, in boolean cancelablearg, in double x, in double y, in double z); attributes attribute type description x double the amount of tilt along the x axis.
... y double the amount of tilt along the y axis.
... z double the amount of tilt along the z axis.
...void initprogressevent( in domstring eventtypearg, in boolean canbubblearg, in boolean cancelablearg, in double x, in double y, in double z ); parameters eventtypearg the type of event.

DOMMatrixReadOnly - Web APIs
m11, m12, m13, m14, m21, m22, m23, m24, m31, m32, m33, m34, m41, m42, m43, m44 double-precision floating-point values representing each component of a 4×4 matrix, where m11 through m14 are the first column, m21 through m24 are the second column, and so forth.
... a, b, c, d, e, f double-precision floating-point values representing the components of a 4×4 matrix which are required in order to perform 2d rotations and translations.
...the elements are stored into the array as double-precision floating-point numbers in column-major (colexographical access access or "colex") order.
... fromfloat64array() creates a new mutable dommatrix object given an array of double-precision (64-bit) floating-point values.

HTMLElement - Web APIs
htmlelement.offsetheight read only returns a double containing the height of an element, relative to the layout.
... htmlelement.offsetleft read only returns a double, the distance from this element's left border to its offsetparent's left border.
... htmlelement.offsettop read only returns a double, the distance from this element's top border to its offsetparent's top border.
... htmlelement.offsetwidth read only returns a double containing the width of an element, relative to the layout.

MediaTrackSettings - Web APIs
latency a double-precision floating point value indicating the current value of the latency property, specifying the audio latency, in seconds.
... volume a double-precision floating point value indicating the current value of the volume property, specifying the volume level of the track.
... properties of video tracks aspectratio a double-precision floating point value indicating the current value of the aspectratio property, specified precisely to 10 decimal places.
... framerate a double-precision floating point value indicating the current value of the framerate property, specifying how many frames of video per second the track includes.

border-style - CSS: Cascading Style Sheets
constituent properties this property is a shorthand for the following css properties: border-bottom-style border-left-style border-right-style border-top-style syntax /* keyword values */ border-style: none; border-style: hidden; border-style: dotted; border-style: dashed; border-style: solid; border-style: double; border-style: groove; border-style: ridge; border-style: inset; border-style: outset; /* vertical | horizontal */ border-style: dotted solid; /* top | horizontal | bottom */ border-style: hidden double dashed; /* top | right | bottom | left */ border-style: none solid dotted dashed; /* global values */ border-style: inherit; border-style: initial; border-style: unset; the border-style prop...
... double displays two straight lines that add up to the pixel size defined by border-width.
...it also applies to ::first-letter.inheritednocomputed valueas each of the properties of the shorthand:border-bottom-style: as specifiedborder-left-style: as specifiedborder-right-style: as specifiedborder-top-style: as specifiedanimation typediscrete formal syntax <line-style>{1,4}where <line-style> = none | hidden | dotted | dashed | solid | double | groove | ridge | inset | outset examples table with all property values here is an example of all the property values.
... html <table> <tr> <td class="b1">none</td> <td class="b2">hidden</td> <td class="b3">dotted</td> <td class="b4">dashed</td> </tr> <tr> <td class="b5">solid</td> <td class="b6">double</td> <td class="b7">groove</td> <td class="b8">ridge</td> </tr> <tr> <td class="b9">inset</td> <td class="b10">outset</td> </tr> </table> css /* define look of the table */ table { border-width: 3px; background-color: #52e396; } tr, td { padding: 2px; } /* border-style example classes */ .b1 {border-style:none;} .b2 {border-style:hidden;} .b3 {border-style:dotted;} .b4 {border-style:dashed;} .b5 {border-style:solid;} .b6 {border-style:double;} .b7 {border-style:groove;} .b8 {border-style:ridge;} .b9 {border-style:inset;} .b10 {border-style:outset;} res...

<string> - CSS: Cascading Style Sheets
syntax the <string> data type is composed of any number of unicode characters surrounded by either double (") or single (') quotes.
...for example, \22 represents a double quote, \27 a single quote ('), and \a9 the copyright symbol (©).
...these include double quotes when used inside a double-quoted string, single quotes when used inside a single-quoted string, and the backslash itself.
... examples /* simple strings */ "this string is demarcated by double quotes." 'this string is demarcated by single quotes.' /* character escaping */ "this is a string with \" an escaped double quote." "this string also has \22 an escaped double quote." 'this is a string with \' an escaped single quote.' 'this string also has \27 an escaped single quote.' "this is a string with \\ an escaped backslash." /* new line in a string */ "this string has a \aline break i...

text-emphasis-style - CSS: Cascading Style Sheets
it may be computed to or rendered as 'f' only */ /* keyword values */ text-emphasis-style: filled; text-emphasis-style: open; text-emphasis-style: dot; text-emphasis-style: circle; text-emphasis-style: double-circle; text-emphasis-style: triangle; text-emphasis-style: filled sesame; text-emphasis-style: open sesame; /* global values */ text-emphasis-style: inherit; text-emphasis-style: initial; text-emphasis-style: unset; syntax values none no emphasis marks.
... double-circle display double circles as marks.
... the filled double-circle is '◉' (u+25c9), and the open double-circle is '◎' (u+25ce).
... formal definition initial valuenoneapplies toall elementsinheritednocomputed valueas specifiedanimation typediscrete formal syntax none | [ [ filled | open ] | [ dot | circle | double-circle | triangle | sesame ] ] | <string> examples h2 { text-emphasis-style: sesame; } specifications specification status comment css text decoration module level 3the definition of 'text-emphasis' in that specification.

Window: deviceproximity event - Archive of obsolete content
bubbles no cancelable no interface deviceproximityevent target defaultview (window) default action none event handler property window.ondeviceproximity specification proximity sensor other properties property type description value read only double (float) the measured proximity of the distant device (distance in centimetres).
... min read only double (float) the minimum value in the range the sensor detects (if available, 0 otherwise).
... max read only double (float) the maximum value in the range the sensor detects (if available, 0 otherwise).

Monitoring downloads - Archive of obsolete content
var dbconn = this.storageservice.opendatabase(this.dbfile); var statement = dbconn.createstatement("update items set size=?1, " + "endtime=?2, speed=?3, status=?4 where source=?5 and starttime=?6"); statement.bindint64parameter(0, adownload.size); statement.bindint64parameter(1, endtime.gettime()); statement.binddoubleparameter(2, adownload.speed); statement.bindint32parameter(3, adownload.state); statement.bindstringparameter(4, adownload.source.spec); statement.bindint64parameter(5, adownload.starttime); statement.execute(); statement.reset(); dbconn.close(); }, this simply opens the database and builds and executes a update sqlite command that finds the download item whose so...
...l'); var datestr = thedate.tolocalestring(); cell.setattribute("label", datestr); row.appendchild(cell); thedate = new date(statement.getint64(3)); // end time cell = document.createelement('listcell'); datestr = thedate.tolocalestring(); cell.setattribute("label", datestr); row.appendchild(cell); var speed = statement.getdouble(4) / 1024.0; cell = document.createelement('listcell'); cell.setattribute("label", speed.tofixed(1) + "kb/sec"); cell.setattribute("style", "text-align:right"); row.appendchild(cell); var status = statement.getint32(5); var style = "color:black"; cell = document.createelement('listcell'); var statusstr; switch(status) { ca...
... the interesting bits to take away from this: mozistoragestatement has several data getter routines for fetching search results, including getstring(), getdouble(), and getint64().

SeaMonkey - making custom toolbar (SM ver. 1.x) - Archive of obsolete content
change the text between double-quote characters on those three lines.
...change the text between double-quote characters on those lines.
...const name = "custombutton" const version = "1.0" r = initinstall(title, name, version) || adddirectory(null, "content", getfolder("chrome"), name) || registerchrome(content + delayed_chrome, getfolder("chrome", name), "") if (r) cancelinstall(r) else performinstall(), alert("now restart seamonkey") customize the title, name and (optionally) version definitions, changing the text between double-quote characters on those three lines.

Array comprehensions - Archive of obsolete content
the following comprehension takes an array of numbers and creates a new array of the double of each of those numbers.
... var numbers = [1, 2, 3, 4]; var doubled = [for (i of numbers) i * 2]; console.log(doubled); // logs 2,4,6,8 this is equivalent to the following map() operation: var doubled = numbers.map(i => i * 2); comprehensions can also be used to select items that match a particular expression.
...here is one that filters just the even numbers, then creates an array containing their doubles: var numbers = [1, 2, 3, 21, 22, 30]; var doubledevens = [for (i of numbers) if (i % 2 === 0) i * 2]; console.log(doubledevens); // logs 4,44,60 the square brackets of an array comprehension introduce an implicit block for scoping purposes.

String.prototype.quote() - Archive of obsolete content
the non-standard quote() method returns a copy of the string, replacing various special characters in the string with their escape sequences and wrapping the result in double-quotes (").
... syntax str.quote() return value a new string representing the original string wrapped in double-quotes, with any special characters escaped.
... examples using quote in the table below the quote() method replaces any special characters and wraps the strings in double-quotes.

Window: devicelight event - Archive of obsolete content
bubbles no cancelable no interface sensorcallback target defaultview (window) other properties property type description value read only double (float) the sensor data for ambient light in lux.
... min read only double (float) the minimum value in the range the sensor detects (if available, 0 otherwise).
... max read only double (float) the maximum value in the range the sensor detects (if available, 0 otherwise).

Handling text — strings in JavaScript - Learn web development
double quotes in javascript, you can choose single quotes or double quotes to wrap your strings in.
... both of the following will work okay: let sgl = 'single quotes.'; let dbl = "double quotes"; sgl; dbl; there is very little difference between the two, and which you use is down to personal preference.
...try this: let response = one + 'i am fine — ' + two; response; note: when you enter an actual string in your code, enclosed in single or double quotes, it is called a string literal.

Handling common accessibility problems - Learn web development
it is a good idea to double up focus and hover styles, so your users get that visual clue that a control will do something when activated, whether they are using mouse or keyboard: a:hover, input:hover, button:hover, select:hover, a:focus, input:focus, button:focus, select:focus { font-weight: bold; } note: if you do decide to remove the default focus styling using css, make sure you replace it with something else that...
... once downloaded, install it — you double click the installer, accept the license and follow the prompts.
... to start nvda, double click on the program file/shortcut, or use the keyboard shortcut ctrl + alt + n.

SVN for Localizers
the -m parameter followed by some text within double quotes (") will be pushed along with your changes.
... within the double quotes you should briefly describe your changes so that everyone can see what you contributed.
... you can also double check your changes using the viewvc interface.

MathML Demo: <mfrac> - fractions
inline double up arrows, auto, thick line ⇑ sin ⁡ θ m ⇑ the end.
... inline double down arrows, display style, thick line ⇓ sin ⁡ θ m ⇓ the end.
... inline double up down arrows, text style, thick line ⇕ sin ⁡ θ m ⇕ the end.

JS::ToNumber
this article covers features introduced in spidermonkey 17 convert any javascript value to a double.
... syntax bool js::tonumber(jscontext *cx, js::handlevalue v, double *out); name type description cx jscontext * the context in which to perform the conversion.
... out double * out parameter.

JSVAL_LOCK
v is a js object, string, or double value.
... jsval_lock determines if v is an object, string, or double value, and if it is, it locks the value.
... if locking is successful, or v already cannot be garbage collected because it is not an object, string, or double value, jsval_lock evaluates to true.

JSVAL_UNLOCK
v is a js object, string, or double value.
... jsval_unlock determines if v is an object, string, or double value, and if it is, it unlocks the value.
... if unlocking is successful, or v not affected by garbage collection because it is not an object, string, or double value, jsval_unlock evaluates to true.

JS_EnterLocalRootScope
by contrast, local root scopes protect newly-created objects, doubles, and strings.
...calling js_enterlocalrootscope and js_leavelocalrootscope around the body of the native hook protects each object, double, and string created using the same jscontext from gc.
... for example: jsbool my_getproperty(jscontext *cx, jsobject *obj, jsval id, jsval *vp) { jsbool ok; if (!js_enterlocalrootscope(cx)) return js_false; // this function doesn't need to bother rooting any new objects, // strings, or doubles it creates using cx.

JS_ValueToNumber
convert any javascript value to a floating-point number of type jsdouble.
... syntax jsbool js_valuetonumber(jscontext *cx, jsval v, jsdouble *dp); name type description cx jscontext * the context in which to perform the conversion.
... dp jsdouble * out parameter.

nsAString
« xpcom api reference summary the nsastring abstract class represents a character string composed of double-byte storage units.
... size_type [pruint32] type used to represent the number of double-byte units stored in the string.
...that is, it may be used to store utf-16 characters, ucs-2 characters, or any random double-byte data.

mozIStorageStatement
g escapestringforlike(in astring avalue, in wchar aescapechar); void bindparameters(in mozistoragebindingparamsarray aparameters); mozistoragebindingparamsarray newbindingparamsarray(); void bindutf8stringparameter(in unsigned long aparamindex, in autf8string avalue); void bindstringparameter(in unsigned long aparamindex, in astring avalue); void binddoubleparameter(in unsigned long aparamindex, in double avalue); void bindint32parameter(in unsigned long aparamindex, in long avalue); void bindint64parameter(in unsigned long aparamindex, in long long avalue); void bindnullparameter(in unsigned long aparamindex); void bindblobparameter(in unsigned long aparamindex, [array,const,size_is(avaluesize)] in octet avalue, ...
... binddoubleparameter() binds a double parameter to the specified index.
... void binddoubleparameter( in unsigned long aparamindex, in double avalue ); parameters aparamindex the zero-based numerical index for the parameter to be bound.

nsIBinaryOutputStream
void setoutputstream(in nsioutputstream aoutputstream); void write8(in pruint8 abyte); void write16(in pruint16 a16); void write32(in pruint32 a32); void write64(in pruint64 a64); void writeboolean(in prbool aboolean); void writebytearray([array, size_is(alength)] in pruint8 abytes, in pruint32 alength); void writebytes(alength)] in string astring, in pruint32 alength); void writedouble(in double adouble); void writefloat(in float afloat); void writestringz(in string astring); void writeutf8z(in wstring astring); void writewstringz(in wstring astring); methods setoutputstream() sets the stream to which output is directed.
... writedouble() writes a double precision floating point number to the stream.
... void writedouble( in double adouble ); parameters adouble the double to write to the stream.

nsIDeviceMotionData
x double the amount of tilt along the x axis.
... y double the amount of tilt along the y axis.
... z double the amount of tilt along the z axis.

nsIPropertyBag2
inherits from: nsipropertybag last changed in gecko 1.0 method overview nsivariant get(in astring prop); acstring getpropertyasacstring(in astring prop); astring getpropertyasastring(in astring prop); autf8string getpropertyasautf8string(in astring prop); boolean getpropertyasbool(in astring prop); double getpropertyasdouble(in astring prop); print32 getpropertyasint32(in astring prop); print64 getpropertyasint64(in astring prop); void getpropertyasinterface(in astring prop, in nsiidref iid, [iid_is(iid), retval] out nsqiresult result); pruint32 getpropertyasuint32(in astring prop); pruint64 getpropertyasuint64(in astring prop); prbool haskey(i...
...getpropertyasdouble() double getpropertyasdouble( in astring prop ); parameters prop property to return the value of.
... return value the property value as a double.

nsIXmlRpcClient
constants constant type description int unsigned long nsisupportsprint32 boolean unsigned long nsisupportsprbool string unsigned long nsisupportscstring double unsigned long nsisupportsdouble datetime unsigned long nsisupportsprtime array readonly unsigned long nsisupportsarray struct readonly unsigned long nsisupportsdictionary methods init() set server url.
...supported arguments are: nsisupportspruint8, nsisupportspruint16, nsisupportsprint16, nsisupportsprint32: i4, nsisupportsprbool: boolean, nsisupportschar, nsisupportscstring: string, nsisupportsfloat, nsisupportsdouble: double, nsisupportsprtime: datetime.iso8601, nsiinputstream: base64, nsisupportsarray: array, nsidictionary: struct note that both nsisupportsarray and nsidictionary can only hold any of the supported input types.
... return value will be converted as follows: i4 or int: nsisupportsprint32 boolean: nsisupportsprbool string: nsisupportscstring double: nsisupportsdouble datetime.iso8601: nsisupportsprtime base64: nsisupportscstring array: nsisupportsarray struct: nsidictionary faults (server side errors) are indicated by returning ns_error_failure.

Accelerometer - Web APIs
properties accelerometer.x read only returns a double containing the acceleration of the device along the device's x axis.
... accelerometer.y read only returns a double containing the acceleration of the device along the device's y axis.
... accelerometer.z read only returns a double containing the acceleration of the device along the device's z axis.

AnalyserNode - Web APIs
analysernode.mindecibels is a double value representing the minimum power value in the scaling range for the fft analysis data, for conversion to unsigned byte values — basically, this specifies the minimum value for the range of results when using getbytefrequencydata().
... analysernode.maxdecibels is a double value representing the maximum power value in the scaling range for the fft analysis data, for conversion to unsigned byte values — basically, this specifies the maximum value for the range of results when using getbytefrequencydata().
... analysernode.smoothingtimeconstant is a double value representing the averaging constant with the last analysis frame — basically, it makes the transition between values over time smoother.

BiquadFilterNode - Web APIs
biquadfilternode.frequency read only is an a-rate audioparam, a double representing a frequency in the current filtering algorithm measured in hertz (hz).
... biquadfilternode.q read only is an a-rate audioparam, a double representing a q factor, or quality factor.
... biquadfilternode.gain read only is an a-rate audioparam, a double representing the gain used in the current filtering algorithm.

DOMHighResTimeStamp - Web APIs
the domhighrestimestamp type is a double and is used to store a time value in milliseconds.
...it is a double-precision floating-point value.
... value the value of a domhighrestimestamp is a double-precision floating-point number which describes the number of milliseconds (accurate to within 5 microseconds if the device supports it) elapsed between two points in time.

DOMMatrix - Web APIs
m11, m12, m13, m14, m21, m22, m23, m24, m31, m32, m33, m34, m41, m42, m43, m44 double-precision floating-point values representing each component of a 4×4 matrix, where m11 through m14 are the first column, m21 through m24 are the second column, and so forth.
... a, b, c, d, e, f double-precision floating-point values representing the components of a 4×4 matrix which are required in order to perform 2d rotations and translations.
... fromfloat64array() creates a new mutable dommatrix object given an array of double-precision (64-bit) floating-point values.

Element: dblclick event - Web APIs
the dblclick event fires when a pointing device button (such as a mouse's primary button) is double-clicked; that is, when it's rapidly clicked twice on a single element within a very short span of time.
... bubbles yes cancelable yes interface mouseevent event handler property ondblclick examples this example toggles the size of a card when you double click on it.
... javascript const card = document.queryselector('aside'); card.addeventlistener('dblclick', function (e) { card.classlist.toggle('large'); }); html <aside> <h3>my card</h3> <p>double click to resize this object.</p> </aside> css aside { background: #fe9; border-radius: 1em; display: inline-block; padding: 1em; transform: scale(.9); transform-origin: 0 0; transition: transform .6s; } .large { transform: scale(1.3); } result specifications specification status ui eventsthe definition of 'dblclick' in that specification.

GamepadButton - Web APIs
note: this is the case in firefox gecko 28 and later; chrome and earlier firefox versions still return an array of double values when this property is accessed.
... properties gamepadbutton.value read only a double value used to represent the current state of analog buttons, such as the triggers on many modern gamepads.
... example the following code is taken from my gamepad api button demo (you can view the demo live, and find the source code on github.) note the code fork — in chrome navigator.getgamepads needs a webkit prefix and the button values are stored as an array of double values, whereas in firefox navigator.getgamepads doesn't need a prefix, and the button values are stored as an array of gamepadbutton objects; it is the gamepadbutton.value or gamepadbutton.pressed properties of these we need to access, depending on what type of buttons they are.

GlobalEventHandlers.ondblclick - Web APIs
the dblclick event is raised when the user double clicks an element.
... example this example logs the position of double clicks.
... html <p>double click anywhere in this example.</p> <p id="log"></p> javascript let log = document.getelementbyid('log'); document.ondblclick = logdoubleclick; function logdoubleclick(e) { log.textcontent = `position: (${e.clientx}, ${e.clienty})`; } result specifications specification status comment html living standardthe definition of 'ondblclick' in that specification.

Gyroscope - Web APIs
properties gyroscope.x read only returns a double, containing the angular velocity of the device along the device's x axis.
... gyroscope.y read only returns a double, containing the angular velocity of the device along the device's y axis.
... gyroscope.z read only returns a double, containing the angular velocity of the device along the device's z axis.

HTMLProgressElement - Web APIs
htmlprogresselement.max is a double value reflecting the content attribute of the same name, limited to numbers greater than zero.
... htmlprogresselement.positionread only returns a double value returning the result of dividing the current value (value) by the maximum value (max); if the progress bar is an indeterminate progress bar, it returns -1.
... htmlprogresselement.value is a double value that reflects the current value; if the progress bar is an indeterminate progress bar, it returns 0.

HTMLTextAreaElement - Web APIs
javascript function insertmetachars(sstarttag, sendtag) { var bdouble = arguments.length > 1, omsginput = document.myform.mytxtarea, nselstart = omsginput.selectionstart, nselend = omsginput.selectionend, soldtext = omsginput.value; omsginput.value = soldtext.substring(0, nselstart) + (bdouble ?
... sstarttag + soldtext.substring(nselstart, nselend) + sendtag : sstarttag) + soldtext.substring(nselend); omsginput.setselectionrange(bdouble || nselstart === nselend ?
... nselstart + sstarttag.length : nselstart, (bdouble ?

LinearAccelerationSensor - Web APIs
properties linearaccelerationsensor.x read only returns a double containing the linear acceleration of the device along the device's x axis.
... linearaccelerationsensor.y read only returns a double containing the linear acceleration of the device along the device's y axis.
... linearaccelerationsensor.z read only returns a double containing the linear acceleration of the device along the device's z axis.

Magnetometer - Web APIs
properties magnetometer.x read only returns a double containing the magnetic field around the device's x axis.
... magnetometer.y read only returns a double containing the magnetic field around the device's y axis.
... magnetometer.z read only returns a double containing the magnetic field around the device's z axis.

MediaTrackConstraints.aspectRatio - Web APIs
the mediatrackconstraints dictionary's aspectratio property is a constraindouble describing the requested or mandatory constraints placed upon the value of the aspectratio constrainable property.
... syntax var constraintsobject = { aspectratio: constraint }; constraintsobject.aspectratio = constraint; value a constraindouble describing the acceptable or required value(s) for a video track's aspect ratio.
...otherwise, the value of this constraindouble will guide the user agent in its efforts to provide an exact match to the required aspect ratio (if exact is specified or both min and max are provided and have the same value) or to a best-possible value.

MediaTrackConstraints.frameRate - Web APIs
the mediatrackconstraints dictionary's framerate property is a constraindouble describing the requested or mandatory constraints placed upon the value of the framerate constrainable property.
... syntax var constraintsobject = { framerate: constraint }; constraintsobject.framerate = constraint; value a constraindouble describing the acceptable or required value(s) for a video track's frame rate, in frames per second.
...otherwise, the value of this constraindouble will guide the user agent in its efforts to provide an exact match to the required frame rate (if exact is specified or both min and max are provided and have the same value) or to a best-possible value.

MediaTrackConstraints.latency - Web APIs
the mediatrackconstraints dictionary's latency property is a constraindouble describing the requested or mandatory constraints placed upon the value of the latency constrainable property.
... syntax var constraintsobject = { latency: constraint }; constraintsobject.latency = constraint; value a constraindouble describing the acceptable or required value(s) for an audio track's latency, with values specified in seconds.
...otherwise, the value of this constraindouble will guide the user agent in its efforts to provide an exact match to the required latency (if exact is specified or both min and max are provided and have the same value) or to a best-possible value.

MediaTrackControls.volume - Web APIs
the mediatrackconstraints dictionary's volume property is a constraindouble describing the requested or mandatory constraints placed upon the value of the volume constrainable property.
... syntax var constraintsobject = { volume: constraint }; constraintsobject.volume = constraint; value a constraindouble describing the acceptable or required value(s) for an audio track's volume, on a linear scale where 0.0 means silence and 1.0 is the highest supported volume.
...otherwise, the value of this constraindouble will guide the user agent in its efforts to provide an exact match to the required volume (if exact is specified or both min and max are provided and have the same value) or to a best-possible value.

MouseEvent.pageX - Web APIs
the cssom view module redefined it as a double float.
... this property was originally specified in the touch events specification as a long integer, but was redefined in the cssom view module to be a double-precision floating-point number to allow for subpixel precision.
... working draft redefined from long to double.

MouseEvent - Web APIs
working draft redefines mouseevent from long to double.
... this means that a pointerevent whose pointertype is mouse will be a double.
...redefined screen, page, client, and coordinate (x and y) properties as double from long.

Web Video Text Tracks Format (WebVTT) - Web APIs
following interface can be used to expose webvtt cues in dom api: enum autokeyword { "auto" }; enum directionsetting { "" /* horizontal */, "rl", "lr" }; enum linealignsetting { "start", "center", "end" }; enum positionalignsetting { "line-left", "center", "line-right", "auto" }; enum alignsetting { "start", "center", "end", "left", "right" }; [constructor(double starttime, double endtime, domstring text)] interface vttcue : texttrackcue { attribute vttregion?
... region; attribute directionsetting vertical; attribute boolean snaptolines; attribute (double or autokeyword) line; attribute linealignsetting linealign; attribute (double or autokeyword) position; attribute positionalignsetting positionalign; attribute double size; attribute alignsetting align; attribute domstring text; documentfragment getcueashtml(); }; vtt region interface this is the second interface in webvtt api.
...the interface code is given below which can be used to expose the webvtt regions in dom api: enum scrollsetting { "" /* none */, "up" }; [constructor] interface vttregion { attribute double width; attribute long lines; attribute double regionanchorx; attribute double regionanchory; attribute double viewportanchorx; attribute double viewportanchory; attribute scrollsetting scroll; }; methods and properties the methods used in webvtt are those which are used to alter the cue or region as the attributes for both interfaces are different.

WheelEvent() - Web APIs
wheeleventinit optional is a wheeleventinit dictionary, having the following fields: "deltax", optional and defaulting to 0.0, is a double representing the horizontal scroll amount in the deltamode unit.
... "deltay", optional and defaulting to 0.0, is a double representing the vertical scroll amount in the deltamode unit.
... "deltaz", optional and defaulting to 0.0, is a double representing the scroll amount for the z-axis in the deltamode unit.

WheelEvent - Web APIs
wheelevent.deltaxread only returns a double representing the horizontal scroll amount.
... wheelevent.deltayread only returns a double representing the vertical scroll amount.
... wheelevent.deltazread only returns a double representing the scroll amount for the z-axis.

border-bottom-style - CSS: Cascading Style Sheets
syntax /* keyword values */ border-bottom-style: none; border-bottom-style: hidden; border-bottom-style: dotted; border-bottom-style: dashed; border-bottom-style: solid; border-bottom-style: double; border-bottom-style: groove; border-bottom-style: ridge; border-bottom-style: inset; border-bottom-style: outset; /* global values */ border-bottom-style: inherit; border-bottom-style: initial; border-bottom-style: unset; the border-bottom-style property is specified as a single keyword chosen from those available for the border-style property.
...it also applies to ::first-letter.inheritednocomputed valueas specifiedanimation typediscrete formal syntax <line-style>where <line-style> = none | hidden | dotted | dashed | solid | double | groove | ridge | inset | outset examples demonstrating all border styles html <table> <tr> <td class="b1">none</td> <td class="b2">hidden</td> <td class="b3">dotted</td> <td class="b4">dashed</td> </tr> <tr> <td class="b5">solid</td> <td class="b6">double</td> <td class="b7">groove</td> <td class="b8">ridge</td> </tr> <tr> <td class="b9">inset</td> <td class="b10">outset</td> </tr> </table> css /* define look of the table */ table { border-width: 3px; background-color: #52e385; } tr,...
... td { padding: 3px; } /* border-bottom-style example classes */ .b1 {border-bottom-style: none;} .b2 {border-bottom-style: hidden;} .b3 {border-bottom-style: dotted;} .b4 {border-bottom-style: dashed;} .b5 {border-bottom-style: solid;} .b6 {border-bottom-style: double;} .b7 {border-bottom-style: groove;} .b8 {border-bottom-style: ridge;} .b9 {border-bottom-style: inset;} .b10 {border-bottom-style: outset;} result specifications specification status comment css backgrounds and borders module level 3the definition of 'border-bottom-style' in that specification.

border-left-style - CSS: Cascading Style Sheets
syntax /* keyword values */ border-left-style: none; border-left-style: hidden; border-left-style: dotted; border-left-style: dashed; border-left-style: solid; border-left-style: double; border-left-style: groove; border-left-style: ridge; border-left-style: inset; border-left-style: outset; /* global values */ border-left-style: inherit; border-left-style: initial; border-left-style: unset; the border-left-style property is specified as a single keyword chosen from those available for the border-style property.
...it also applies to ::first-letter.inheritednocomputed valueas specifiedanimation typediscrete formal syntax <line-style>where <line-style> = none | hidden | dotted | dashed | solid | double | groove | ridge | inset | outset examples html <table> <tr> <td class="b1">none</td> <td class="b2">hidden</td> <td class="b3">dotted</td> <td class="b4">dashed</td> </tr> <tr> <td class="b5">solid</td> <td class="b6">double</td> <td class="b7">groove</td> <td class="b8">ridge</td> </tr> <tr> <td class="b9">inset</td> <td class="b10">outset</td> </tr> </table> css /* define look of the table */ table { border-width: 2px; background-color: #52e385; } tr, td { padding: 3px; } /* borde...
...r-left-style example classes */ .b1 {border-left-style: none;} .b2 {border-left-style: hidden;} .b3 {border-left-style: dotted;} .b4 {border-left-style: dashed;} .b5 {border-left-style: solid;} .b6 {border-left-style: double;} .b7 {border-left-style: groove;} .b8 {border-left-style: ridge;} .b9 {border-left-style: inset;} .b10 {border-left-style: outset;} result specifications specification status comment css backgrounds and borders module level 3the definition of 'border-left-style' in that specification.

border-right-style - CSS: Cascading Style Sheets
syntax /* keyword values */ border-right-style: none; border-right-style: hidden; border-right-style: dotted; border-right-style: dashed; border-right-style: solid; border-right-style: double; border-right-style: groove; border-right-style: ridge; border-right-style: inset; border-right-style: outset; /* global values */ border-right-style: inherit; border-right-style: initial; border-right-style: unset; the border-right-style property is specified as a single keyword chosen from those available for the border-style property.
...it also applies to ::first-letter.inheritednocomputed valueas specifiedanimation typediscrete formal syntax <line-style>where <line-style> = none | hidden | dotted | dashed | solid | double | groove | ridge | inset | outset examples border styles html <table> <tr> <td class="b1">none</td> <td class="b2">hidden</td> <td class="b3">dotted</td> <td class="b4">dashed</td> </tr> <tr> <td class="b5">solid</td> <td class="b6">double</td> <td class="b7">groove</td> <td class="b8">ridge</td> </tr> <tr> <td class="b9">inset</td> <td class="b10">outset</td> </tr> </table> css /* define look of the table */ table { border-width: 2px; background-color: #52e385; } tr, td { padding: 3...
...px; } /* border-right-style example classes */ .b1 {border-right-style: none;} .b2 {border-right-style: hidden;} .b3 {border-right-style: dotted;} .b4 {border-right-style: dashed;} .b5 {border-right-style: solid;} .b6 {border-right-style: double;} .b7 {border-right-style: groove;} .b8 {border-right-style: ridge;} .b9 {border-right-style: inset;} .b10 {border-right-style: outset;} result specifications specification status comment css backgrounds and borders module level 3the definition of 'border-right-style' in that specification.

border-top-style - CSS: Cascading Style Sheets
syntax /* keyword values */ border-top-style: none; border-top-style: hidden; border-top-style: dotted; border-top-style: dashed; border-top-style: solid; border-top-style: double; border-top-style: groove; border-top-style: ridge; border-top-style: inset; border-top-style: outset; /* global values */ border-top-style: inherit; border-top-style: initial; border-top-style: unset; the border-top-style property is specified as a single keyword chosen from those available for the border-style property.
...it also applies to ::first-letter.inheritednocomputed valueas specifiedanimation typediscrete formal syntax <line-style>where <line-style> = none | hidden | dotted | dashed | solid | double | groove | ridge | inset | outset examples html <table> <tr> <td class="b1">none</td> <td class="b2">hidden</td> <td class="b3">dotted</td> <td class="b4">dashed</td> </tr> <tr> <td class="b5">solid</td> <td class="b6">double</td> <td class="b7">groove</td> <td class="b8">ridge</td> </tr> <tr> <td class="b9">inset</td> <td class="b10">outset</td> </tr> </table> css /* define look of the table */ table { border-width: 2px; background-color: #52e385; } tr, td { padding: 3px; } /* borde...
...r-top-style example classes */ .b1 {border-top-style: none;} .b2 {border-top-style: hidden;} .b3 {border-top-style: dotted;} .b4 {border-top-style: dashed;} .b5 {border-top-style: solid;} .b6 {border-top-style: double;} .b7 {border-top-style: groove;} .b8 {border-top-style: ridge;} .b9 {border-top-style: inset;} .b10 {border-top-style: outset;} result specifications specification status comment css backgrounds and borders module level 3the definition of 'border-top-style' in that specification.

outline-style - CSS: Cascading Style Sheets
syntax /* keyword values */ outline-style: auto; outline-style: none; outline-style: dotted; outline-style: dashed; outline-style: solid; outline-style: double; outline-style: groove; outline-style: ridge; outline-style: inset; outline-style: outset; /* global values */ outline-style: inherit; outline-style: initial; outline-style: unset; the outline-style property is specified as any one of the values listed below.
... double the outline is two single lines.
...ing: 15px; } result setting outline style to dashed and dotted html <div> <div class="dotted"> <p class="dashed">outline demo</p> </div> </div> css .dotted { outline-style: dotted; /* same result as "outline: dotted" */ } .dashed { outline-style: dashed; } /* to make the demo clearer */ * { outline-width: 10px; padding: 15px; } result setting outline style to solid and double html <div> <div class="solid"> <p class="double">outline demo</p> </div> </div> css .solid { outline-style: solid; } .double { outline-style: double; } /* to make the demo clearer */ * { outline-width: 10px; padding: 15px; } result setting outline style to groove and ridge html <div> <div class="groove"> <p class="ridge">outline demo</p> </div> </div> css .groov...

text-decoration-style - CSS: Cascading Style Sheets
syntax /* keyword values */ text-decoration-style: solid; text-decoration-style: double; text-decoration-style: dotted; text-decoration-style: dashed; text-decoration-style: wavy; /* global values */ text-decoration-style: inherit; text-decoration-style: initial; text-decoration-style: unset; values solid draws a single line.
... double draws a double line.
...it also applies to ::first-letter and ::first-line.inheritednocomputed valueas specifiedanimation typediscrete formal syntax solid | double | dotted | dashed | wavy examples setting a wavy underline .example { -moz-text-decoration-line: underline; -moz-text-decoration-style: wavy; -moz-text-decoration-color: red; -webkit-text-decoration-line: underline; -webkit-text-decoration-style: wavy; -webkit-text-decoration-color: red; } css .wavy { text-decoration-line: underline; text-decoration-style: wavy; text-decoration-color: red; } html ...

SyntaxError: JSON.parse: bad parsing - JavaScript
ntaxerror: json.parse: unexpected character syntaxerror: json.parse: end of data while reading object contents syntaxerror: json.parse: expected property name or '}' syntaxerror: json.parse: end of data when ',' or ']' was expected syntaxerror: json.parse: expected ',' or ']' after array element syntaxerror: json.parse: end of data when property name was expected syntaxerror: json.parse: expected double-quoted property name syntaxerror: json.parse: end of data after property name when ':' was expected syntaxerror: json.parse: expected ':' after property name in object syntaxerror: json.parse: end of data after property value in object syntaxerror: json.parse: expected ',' or '}' after property value in object syntaxerror: json.parse: expected ',' or '}' after property-value pair in object litera...
...l syntaxerror: json.parse: property names must be double-quoted strings syntaxerror: json.parse: expected property name or '}' syntaxerror: json.parse: unexpected character syntaxerror: json.parse: unexpected non-whitespace character after json data syntaxerror: json.parse error: invalid character at position {0} (edge) error type syntaxerror what went wrong?
... examples json.parse() does not allow trailing commas both lines will throw a syntaxerror: json.parse('[1, 2, 3, 4,]'); json.parse('{"foo": 1,}'); // syntaxerror json.parse: unexpected character // at line 1 column 14 of the json data omit the trailing commas to parse the json correctly: json.parse('[1, 2, 3, 4]'); json.parse('{"foo": 1}'); property names must be double-quoted strings you cannot use single-quotes around properties, like 'foo'.

Array.prototype.reduce() - JavaScript
const numbers = [-5, 6, 2, 0,]; const doubledpositivenumbers = numbers.reduce((accumulator, currentvalue) => { if (currentvalue > 0) { const doubled = currentvalue * 2; accumulator.push(doubled); } return accumulator; }, []); console.log(doubledpositivenumbers); // [12, 4] running promises in sequence /** * runs promises from array of functions that can return promises * in chained manner * * @param {array} arr - promis...
... function 3 - will be wrapped in a resolved promise by .then() function f3(a) { return a * 3 } // promise function 4 function p4(a) { return new promise((resolve, reject) => { resolve(a * 4) }) } const promisearr = [p1, p2, f3, p4] runpromiseinsequence(promisearr, 10) .then(console.log) // 1200 function composition enabling piping // building-blocks to use for composition const double = x => x + x const triple = x => 3 * x const quadruple = x => 4 * x // function composition enabling pipe functionality const pipe = (...functions) => input => functions.reduce( (acc, fn) => fn(acc), input ) // composed functions for multiplication of specific values const multiply6 = pipe(double, triple) const multiply9 = pipe(triple, triple) const multiply16 = pipe(quadruple, quadrupl...
...e) const multiply24 = pipe(double, triple, quadruple) // usage multiply6(6) // 36 multiply9(9) // 81 multiply16(16) // 256 multiply24(10) // 240 write map using reduce if (!array.prototype.mapusingreduce) { array.prototype.mapusingreduce = function(callback, thisarg) { return this.reduce(function(mappedarray, currentvalue, index, array) { mappedarray[index] = callback.call(thisarg, currentvalue, index, array) return mappedarray }, []) } } [1, 2, , 3].mapusingreduce( (currentvalue, index, array) => currentvalue + index + array.length ) // [5, 7, , 10] specifications specification ecmascript (ecma-262)the definition of 'array.prototype.reduce()' in that specification.

String - JavaScript
string literals can be specified using single or double quotes, which are treated identically, or using the backtick character `.
...(the same is true of boolean and numbers.) string literals (denoted by double or single quotes) and strings returned from string calls in a non-constructor context (that is, called without using the new keyword) are primitive strings.
... console.log(eval(s2.valueof())) // returns the number 4 escape notation special characters can be encoded using escape notation: code output \xxx (where xxx is 1–3 octal digits; range of 0–377) iso-8859-1 character / unicode code point between u+0000 and u+00ff \' single quote \" double quote \\ backslash \n new line \r carriage return \v vertical tab \t tab \b backspace \f form feed \uxxxx (where xxxx is 4 hex digits; range of 0x0000–0xffff) utf-16 code unit / unicode code point between u+0000 and u+ffff \u{x} ...

Chapter 6: Firefox extensions and XUL applications - Archive of obsolete content
double-click on quicknote.js to open it in source-code view (figure 2).
...drop the i from nsilocalfile, double the colons, and capitalize the first letter of the function name, resulting in nslocalfile::initwithpath.

Index - Archive of obsolete content
this means that when you double-click or launch a *.webapp file, prism is launched and automatically opens the web application.
... 2075 string.prototype.quote() javascript, method, obsolete, prototype, reference, string the non-standard quote() method returns a copy of the string, replacing various special characters in the string with their escape sequences and wrapping the result in double-quotes (").

Editor Embedding Guide - Archive of obsolete content
setbooleanvalue setlongvalue setdoublevalue setstringvalue setcstringvalue setisupportsvalue removevalue each will take a name value pair.
... first getnext (returns the next name in the name/value pair list) hasmoreelements getvaluetype (numeric enum type see nsicommandparams for values) if the name/value pair is known or it was obtained using the methods described above, it is possible to call the following methods: getbooleanvalue getlongvalue getdoublevalue getstringvalue getcstringvalue getisupportsvalue all of these take pointers to values except for getstringvalue which demands a reference to an nsastring.

Venkman Introduction - Archive of obsolete content
icon data type icon data type void (undefined) value null value boolean value string value integer value double value object value function value figure 9.
... double-clicking on a stack frame will change the "current" frame.

diskSpaceAvailable - Archive of obsolete content
method of file object syntax double diskspaceavailable ( string nativefolderpath ); parameters the diskspaceavailable method has the following parameters: nativefolderpath a string representing the pathname of the partition, a file, or a directory on the partition whose space is being queried.
... returns a double number representing the amount of space, in bytes, on the queried drive.

modDate - Archive of obsolete content
method of file object syntax double moddate ( filespecobject nativefolderpath ); parameters the moddate method has the following parameters: nativefolderpath a filespecobject representing the queried file.
... returns a double number representing the date that the file was last modified.

execute - Archive of obsolete content
in general, you should use single quotes for the args string and double quotes to delimit the command-line arguments within args.
... the following parsing rules apply: double quotes are treated as quotes; single quotes are ignored by the executable but legal in the execute() method.

XUL Events - Archive of obsolete content
this event is also sent when the user double-clicks with the mouse.
... attribute: onclick dblclick this event is like the click event except it is only sent when the user double clicks with the mouse.

Custom toolbar button - Archive of obsolete content
change the text between double-quote characters on these three lines.
...change the text between double-quote characters on these two lines.

XML - Archive of obsolete content
all strings must be double quoted.
...when an attribute is assigned a value (e.g., flex="1" or "onload='dointerestingstartupthing()'") that value must be double-quoted.

XUL Explorer - Archive of obsolete content
double-click to display error console.
... double-click or drag-and-drop to insert a snippet file > new allows user to pick any “template” snippet, as well as blank.

Generator comprehensions - Archive of obsolete content
we want to create a new iterator that will iterate over their doubles.
... an array comprehension would create a full array in memory containing the doubled values: var doubles = [for (i in it) i * 2]; a generator comprehension on the other hand would create a new iterator which would create doubled values on demand as they were needed: var it2 = (for (i in it) i * 2); console.log(it2.next()); // the first value from it, doubled console.log(it2.next()); // the second value from it, doubled when a generator comprehension is used as the argument to a function, the parentheses used for the function call means that the outer parentheses can be omitted: var result = dosomething(for (i in it) i * 2); the significant difference between the two examples being that by using the generator comprehension, you would only have to loop over the 'obj' structure once, total, ...

Properly Using CSS and JavaScript in XHTML Documents - Archive of obsolete content
——>) must not contain double dashes (——).
...- xmlguru) inline style and script containing double dashes another problem with using comments to surround javascript in xhtml is related to the problems which can occur if comments contain double dashes (——).

Number - MDN Web Docs Glossary: Definitions of Web-related terms
in javascript, number is a numeric data type in the double-precision 64-bit floating point format (ieee 754).
... in other programming languages different numeric types exist; for example, integers, floats, doubles, or bignums.

Pseudo-classes and pseudo-elements - Learn web development
pseudo-elements start with a double colon ::.
...modern browsers support the early pseudo-elements with single- or double-colon syntax for backwards compatibility.

Dealing with files - Learn web development
insert the file path into your html code between the double quote marks of the src="" code.
... save your html file, then load it in your web browser (double-click the file).

Server-side web frameworks - Learn web development
in this case we specify that we want to filter for all records where the team_level field has exactly the text 'u09' (note below how this criteria is passed to the filter() function as an argument with field name and match type separated by double underscores: team_level__exact).
... for example, the django template system allows you to specify variables using a "double-handlebars" syntax (e.g.

Embedding API for Accessibility
for double-sized text, use nsidomwindow::settextzoom(2.0); using accessibility preferences there are a number of prefs related to accessibility.
... setboolpref("browser.accept.audio", acceptaudio); no timed events setboolpref("browser.accept.timed_events", accepttimedevents); no timer speed setintpref("timer.relative_speed", percent); /* 100 corresponds to normal speed, 200 to double speed */ no allow cycling in lists and links setboolpref("keyboardnav.allow_cycling", allowcycling); no mouse pointer moves with keyboard focus setboolpref("keyboardnav.mouse_follows_keyboard_focus", mousefollows); /* if this pref is set, the mouse pointer...

Debugging on Mac OS X
find the *.xcodejproj directory in the temporary directory, move it into your mozilla source tree, and then double-click on it to reopen it.
...so that you're not bothered with the profile manager every time you start to debug, expand the "executables" branch of the "groups & files" list and double click on the executable you added for mozilla.

Displaying Places information using views
placestreeview performs double duty for the built-in tree view: it implements both nsitreeview and much of the functionality required of a places view.
... because of placestreeview's double duty, you can use it to bridge a query result and a tree element: var result = historyservice.executequery(query, opts); // your places query result var tree = document.getelementbyid("mytree"); // your tree element var showrootnodeintree = true; var view = new placestreeview(showrootnodeintree); // here's the bridge!

Experimental features in Firefox
nightly 75 no developer edition 75 no beta 75 no release 75 no preference name devtools.webconsole.input.context mobile gesture support in responsive design mode mouse gestures are used to simulate mobile gestures like swiping/scrolling, double-tap and pinch-zooming and long-press to select/open the context menu.
... nightly 76[1] yes developer edition 76[1] yes beta 76[1] yes release 76[1] no preference name n/a [1] support for zooming using the double-tap gesture was added in firefox 76.

IME handling guide
the values are integer, 0: none, 1: dotted, 2: dashed, 3: solid, 4: double, 5: wavy (the values same as ns_style_text_decoration_style_* defined in nsstyleconsts.h.
...100 means normal width, 200 means double width.

IPDL Tutorial
the built-in simple types include the c++ integer types (bool, char, int, double) and xpcom string types (nsstring, nscstring).
... using struct mozilla::void_t from "ipc/ipcmessageutils.h"; union variant { void_t; bool; int; double; nscstring; ppluginscriptableobject; }; this union generates a c++ interface which includes the following: struct variant { enum type { tvoid_t, tbool, tint, tdouble, tnscstring, tpplugionscriptableobject }; type type(); void_t& get_void_t(); bool& get_bool(); int& get_int(); double& get_double(); nscstring& get_nscstring(); ppluginscriptableobject* get_ppluginscriptab...

Localization content best practices
u+201c and u+201d (\u201c and \u201d in javascript) are the left and right double quotation marks, respectively.
... example: search %1$s for "%2$s" non-directional single, and double, quotation marks should be used in reference to html code, or other languages where ascii character usage is required, such as html.

Localizing with Koala
you can right-click it and choose "add entity" as you did previously, or just double-click the entity name to add it to the file.
...double-click on search.properties and click "ok" when koala asks if you want to create this file.

Leak-hunting strategies and tips
double-addref: this happens most often when assigning the result of a function that returns an addrefed pointer (bad!) into an nscomptr without using dont_addref().
... [obscure] double-assignment into the same variable: if you release a member variable and then assign into it by calling another function that does the same thing, you can leak the object assigned into the variable by the inner function.

Memory reporting
avoiding double measurement is easy in tree-like structures.
... it detects certain defects in existing heap memory reporters: if non-heap memory is reported, or if a heap block is partially reported or double-reported.

Floating Point Number to String Conversion
nspr provides functions that convert double-precision floating point numbers to and from their character string representations.
...they use ieee double-precision (not ieee double-extended) arithmetic.

PR_strtod
converts the prefix of a decimal string to the nearest double-precision floating point number.
... description pr_strtod converts the prefix of the input decimal string pointed to by s00 to a nearest double-precision floating point number.

NSS API Guidelines
you can even put them in header files; the header files are protected from double inclusion.
...header files always include what they need; the files are protected against double inclusion (and even double opening by the compiler).

The JavaScript Runtime
these types are implemented with the following java types and values: javascript fundamental type java type undefined a singleton object defined by context.getundefinedtype() null null boolean java.lang.boolean number java.lang.number, that is, any of java.lang.byte, java.lang.short, java.lang.integer, java.lang.float, or java.lang.double.
... not java.lang.long, since a double representation of a long may lose precision.

JSAPI Cookbook
n like typeof === "object" is :-) to set a value use a correspondingly named member mutator function, or assign the result of the correspondingly named standalone function: // javascript var v; v = 0; v = 0.5; v = somestring; v = null; v = undefined; v = false; /* jsapi */ js::rootedvalue v(cx); js::rootedstring somestring(cx, ...); v.setint32(0); // or: v = js::int32value(0); v.setdouble(0.5); // or: v = js::doublevalue(0.5); v.setstring(somestring); // or: v = js::stringvalue(somestring); v.setnull(); // or: v = js::nullvalue(); v.setundefined(); // or: v = js::undefinedvalue(); v.setboolean(false); // or: v = js::booleanvalue(false); finding the global object many of these recipes require finding the current global object first.
... */ js::callargs args = js::callargsfromvp(argc, vp); args.rval().setint32(23); return true; returning a floating-point number // javascript return 3.14159; /* jsapi */ js::callargs args = js::callargsfromvp(argc, vp); args.rval().setdouble(3.14159); exception handling throw the most common idiom is to create a new error object and throw that.

JS::NumberValue
syntax js::value js::numbervalue(float f) js::value js::numbervalue(double dbl) js::value js::numbervalue(int8_t i) js::value js::numbervalue(uint8_t i) js::value js::numbervalue(int16_t i) js::value js::numbervalue(uint16_t i) js::value js::numbervalue(int32_t i) js::value js::numbervalue(uint32_t i) name type description f or dbl or i any c integer or floating-point value to convert.
... see also mxr id search for js::numbervalue js::value js::int32value js::float32value js::doublevalue js_numbervalue ...

JS_ConvertArguments
n one or more instances of the following characters, as appropriate: character c type description b bool boolean c uint16_t ecma uint16_t, unicode character i int32_t ecma int32_t j int32_t ecma int32_t (used to be different, behaves like i now) obsolete since jsapi 28 u uint32_t ecma uint32_t d double ieee double i double integral ieee double s char * (c string) bug 607292 s jsstring * unicode string, accessed by a jsstring pointer w char16_t * unicode character vector, 0-terminated (w for wide) o jsobject * object reference f jsfunction * the argument is converted to a function as though by a c...
... for example, if format is "biob", then js_convertarguments converts the first js value in argv into a bool, the second value into a double, the third value into a jsobject *, and the last value into a bool.

JS_FileEscapedString
quote char one of 0, single quote, and double quote.
...if quote is not 0, it must be a single or double quote character that will quote the output.

JS_ForgetLocalRoot
this must point to a jsobject, jsstring, jsfunction, or jsdouble.
...(here the term gc-thing refers to any value that is subject to garbage collection: a jsobject, jsstring, jsfunction, or jsdouble.) js_forgetlocalroot works on any gc-thing allocated in the current local root scope, but it's more time-efficient when called on references to more recently created gc-things.

JS_NewDateObjectMsec
syntax jsobject * js_newdateobjectmsec(jscontext *cx, double msec); name type description cx jscontext * the context.
... msec double time since unix epoch in milliseconds.

JS_PushArguments
format can contain one or more instances of the following characters, as appropriate: character argument type b jsbool c uint16 (16-bit, unsigned integer) i int32 (32-bit, ecma-compliant signed integer) u uint32 (32-bit, ecma-compliant, unsigned integer) j int32 (32-bit, signed integer) d jsdouble i jsdouble (converted to an integer value) s char * (c string) s jsstring * (unicode string) w jschar * (unicode null-terminated string) o jsobject * f jsfunction * * none.
...their types must be jsbool, jsdouble, jsobject *, and jsbool.

JS_PutEscapedString
quote char one of 0, single quote, and double quote.
...if quote is not 0, it must be a single or double quote character that will quote the output.

JS_RemoveRootRT
rp is thus a pointer to a pointer to a js double, string, or object.
... do not pass a pointer to a js double, string, or object -- you must pass a pointer to a pointer or a pointer to a jsval that's a gc thing.

JS_SetElement
t v); bool js_setelement(jscontext *cx, js::handleobject obj, uint32_t index, js::handlestring v); bool js_setelement(jscontext *cx, js::handleobject obj, uint32_t index, int32_t v); bool js_setelement(jscontext *cx, js::handleobject obj, uint32_t index, uint32_t v); bool js_setelement(jscontext *cx, js::handleobject obj, uint32_t index, double v); /* obsolete since jsapi 29 */ bool js_setelement(jscontext *cx, js::handleobject obj, uint32_t index, js::mutablehandlevalue vp); name type description cx jscontext * the context in which to set the element.
... v js::handlevalue or js::handleobject or js::handlestring or int32_t or uint32_t or double the value to assign to the element.

SpiderMonkey 1.8
js_newdouble is now deprecated.
... use js_newdoublevalue.

SpiderMonkey 38
1107639) js::removescriptroot (bug 1107639) js::removescriptrootrt (bug 1107639) js::removestringroot (bug 1107639) js::removestringrootrt (bug 1107639) js::removevalueroot (bug 1107639) js::removevaluerootrt (bug 1107639) jsclass_new_enumerate (bug 1097267) jsclass_new_resolve (bug 993026) jsid_is_object (bug 915482) jsnewresolveop (bug 993026) jsval_is_boolean (bug 952650) jsval_is_double (bug 952650) jsval_is_gcthing (bug 952650) jsval_is_int (bug 952650) jsval_is_null (bug 952650) jsval_is_number (bug 952650) jsval_is_primitive (bug 952650) jsval_is_string (bug 952650) jsval_is_void (bug 952650) jsval_to_boolean (bug 952650) jsval_to_double (bug 952650) jsval_to_gcthing (bug 952650) jsval_to_int (bug 952650) jsval_to_object (bug 952650) jsval_to_private (bug 952650)...
... jsval_to_string (bug 952650) js_clearnonglobalobject (bug 1043281) js_clonefunctionobject (bug 1089026) js_compilefunction (bug 1089026) js_compileucfunction (bug 1089026) js_convertarguments (bug 1125784) js_convertargumentsva (bug 1125784) js_convertstub (bug 1103152) js_defineownproperty (bug 1017323) js_deletepropertystub (bug 1103152) js_doubletoint32 (bug 1112774) js_doubletouint32 (bug 1112774) js_enumeratestub (bug 1103152) js_evaluatescript (bug 1100579) js_evaluateucscript (bug 1100579) js_executescriptversion (bug 1095660) js_getflatstringchars (bug 1037869) js_getfunctioncallback (bug 1103269) js_getinternedstringchars (bug 1037869) js_getinternedstringcharsandlength (bug 1037869) js_getstringcharsandlength (bug 1037869) js_getstringcharsz (bug 1037869) js_get...

Using XPCOM Utilities to Make Things Easier
the former handles double byte characters, and the latter tends to be used in more general circumstances, but both of these classes define the functionality of a string.
...the double byte version, nsembedstring, has the same functionality but the constructor takes nsastring and the .get() method returns the type prunichar*.

Index
941 nsisupportsdouble interfaces, interfaces:scriptable, xpcom, xpcom api reference, xpcom interface reference this methods returns a string valued representation of the object.
... 1164 nsacstring (external) needscontent, reference, référence(2), strings class declaration 1165 nsacstring_internal class declaration 1166 nsastring xpcom, xpcom api reference the nsastring abstract class represents a character string composed of double-byte storage units.

Components.utils.evalInSandbox
for example: function double(n) { return n * 2; } // create new sandbox instance var mysandbox = new components.utils.sandbox("http://www.example.com/"); mysandbox.y = 5; // insert property 'y' with value 5 into global scope.
... mysandbox.double = double; var result = components.utils.evalinsandbox("x = y + 2; double(x) + 3", mysandbox); console.log(result); // 17 console.log(mysandbox.x); // 7 operations on objects you insert into this sandbox global scope do not carry privileges into the sandbox: mysandbox.foo = components; // this will give a "permission denied" error components.utils.evalinsandbox("foo.classes", mysandbox); optional arguments you can optionally specify the js version, filename, and line number of the code being evaluated.

nsICRLManager
inherits from: nsisupports last changed in gecko 1.7 method overview wstring computenextautoupdatetime(in nsicrlinfo info, in unsigned long autoupdatetype, in double noofdays); void deletecrl(in unsigned long crlindex); nsiarray getcrls(); void importcrl([array, size_is(length)] in octet data, in unsigned long length, in nsiuri uri, in unsigned long type, in boolean dosilentdownload, in wstring crlkey); void reschedulecrlautoupdate(); boolean updatecrlfromurl(in wstring url, in wstring key); constants constant value description type_autoupdate_time_based 1 type_autoupdate_freq_based 2 methods computenextautoupdatetime() wstring computenextautoupdatetime( i...
...n nsicrlinfo info, in unsigned long autoupdatetype, in double noofdays ); parameters info autoupdatetype noofdays return value deletecrl() delete the crl.

nsIDOMSimpleGestureEvent
nt(in domstring typearg, in boolean canbubblearg, in boolean cancelablearg, in nsidomabstractview viewarg, in long detailarg, in long screenxarg, in long screenyarg, in long clientxarg, in long clientyarg, in boolean ctrlkeyarg, in boolean altkeyarg, in boolean shiftkeyarg, in boolean metakeyarg, in unsigned short buttonarg, in nsidomeventtarget relatedtargetarg, in unsigned long directionarg, in double deltaarg); attributes attribute type description delta double the delta value indicating how far the gesture moved.
...olean canbubblearg, in boolean cancelablearg, in nsidomabstractview viewarg, in long detailarg, in long screenxarg, in long screenyarg, in long clientxarg, in long clientyarg, in boolean ctrlkeyarg, in boolean altkeyarg, in boolean shiftkeyarg, in boolean metakeyarg, in unsigned short buttonarg, in nsidomeventtarget relatedtargetarg, in unsigned long directionarg, in double deltaarg ); parameters typearg canbubblearg cancelablearg viewarg detailarg screenxarg screenyarg clientxarg clientyarg ctrlkeyarg altkeyarg shiftkeyarg metakeyarg buttonarg relatedtargetarg directionarg the value to assign to the direction attribute.

nsISupportsPrimitive
type_double 15 corresponding to nsisupportsdouble.
...see also nsisupportscstring nsisupportschar nsisupportsdouble nsisupportsfloat nsisupportsid nsisupportsinterfacepointer nsisupportsprbool nsisupportsprint16 nsisupportsprint32 nsisupportsprint64 nsisupportsprtime nsisupportspruint16 nsisupportspruint32 nsisupportspruint64 nsisupportspruint8 nsisupportsstring nsisupportsvoid ...

nsIWritablePropertyBag2
ged in gecko 1.8 (firefox 1.5 / thunderbird 1.5 / seamonkey 1.0) method overview void setpropertyasacstring(in astring prop, in acstring value); void setpropertyasastring(in astring prop, in astring value); void setpropertyasautf8string(in astring prop, in autf8string value); void setpropertyasbool(in astring prop, in boolean value); void setpropertyasdouble(in astring prop, in double value); void setpropertyasint32(in astring prop, in print32 value); void setpropertyasint64(in astring prop, in print64 value); void setpropertyasinterface(in astring prop, in nsisupports value); void setpropertyasuint32(in astring prop, in pruint32 value); void setpropertyasuint64(in astring prop, in pruint64 value); m...
... setpropertyasdouble() void setpropertyasdouble( in astring prop, in double value ); parameters prop property to set the value of.

XPIDL Syntax
string_literal = 1*(%x22 *(any char except %x22 or %x0a) (%x22 / %x0a)) ; same as above, but s/"/'/g char_literal = 1*(%x27 *(any char except %x27 or %x0a) (%x27 / %x0a)) type_spec = "float" / "double" / "string" / "wstring" type_spec /= ["unsigned"] ("short" / "long" / "long" "long") type_spec /= "char" / "wchar" / "boolean" / "octet" type_spec /= scoped_name prop_list = "[" *(property ",") property "]" property = ident [parens] raise_list = "raises" "(" *(scoped_name) ",") scoped_name ")" scoped_name = *(ident "::") ident / "::" ident ; in regex: [a-za-z_][a-za-z0-9_]*; identifie...
...following is a list of potential features which are parseable but may not result in expected code: struct, union, and enumerated types array declarators (appears to be supported in xpidl_header.c but not xpidl_typelib.c) exception declarations module declarations variable arguments (that makes the abnf get more wonky) sequence types max-length strings fixed-point numbers "any" and "long double" types.

Standard OS Libraries
ctypes.float : ctypes.double; // 64bit its double, in 32bit its float let cgpoint = new ctypes.structtype("cgpoint", [ { "x" : cgfloat }, { "y" : cgfloat } ]); let cgeventgetlocation = coregraphics.declare("cgeventgetlocation", ctypes.default_abi, cgpoint, ...
...ctypes.float : ctypes.double; // 64bit its double, in 32bit its float let nspoint = new ctypes.structtype("nspoint", [ { "x" : cgfloat }, { "y" : cgfloat } ]); // note: [nsevent mouselocation] returns nspoint struct, // which is small enough to return in register, // so we don't need to use objc_msgsend_stret.

Edit Shape Paths in CSS - Firefox Developer Tools
double-click anywhere on a line of the shape and you will get a new point to adjust.
... double click on an existing point and it will be removed.

AnalyserNode.maxDecibels - Web APIs
the maxdecibels property of the analysernode interface is a double value representing the maximum power value in the scaling range for the fft analysis data, for conversion to unsigned byte/float values — basically, this specifies the maximum value for the range of results when using getfloatfrequencydata() or getbytefrequencydata().
... syntax var curvalue = analysernode.maxdecibels; analysernode.maxdecibels = newvalue; value a double, representing the maximum decibel value for scaling the fft analysis data, where 0 db is the loudest possible sound, -10 db is a 10th of that, etc.

AnalyserNode.minDecibels - Web APIs
the mindecibels property of the analysernode interface is a double value representing the minimum power value in the scaling range for the fft analysis data, for conversion to unsigned byte/float values — basically, this specifies the minimum value for the range of results when using getfloatfrequencydata() or getbytefrequencydata().
... syntax var curvalue = analysernode.mindecibels; analysernode.mindecibels = newvalue; value a double, representing the minimum decibel value for scaling the fft analysis data, where 0 db is the loudest possible sound, -10 db is a 10th of that, etc.

AnalyserNode.smoothingTimeConstant - Web APIs
the smoothingtimeconstant property of the analysernode interface is a double value representing the averaging constant with the last analysis frame.
... syntax var smoothvalue = analysernode.smoothingtimeconstant; analysernode.smoothingtimeconstant = newvalue; value a double within the range 0 to 1 (0 meaning no time averaging).

AudioBuffer.duration - Web APIs
the duration property of the audiobuffer interface returns a double representing the duration, in seconds, of the pcm data stored in the buffer.
... syntax var myarraybuffer = audioctx.createbuffer(2, framecount, audioctx.samplerate); myarraybuffer.duration; value a double.

AudioContext.baseLatency - Web APIs
the baselatency read-only property of the audiocontext interface returns a double that represents the number of seconds of processing latency incurred by the audiocontext passing an audio buffer from the audiodestinationnode — i.e.
... syntax var baselatency = audioctx.baselatency; value a double representing the base latency in seconds.

AudioContextOptions.latencyHint - Web APIs
the value is specified either as a member of the string enum audiocontextlatencycategory or a double-precision value.
... the value can also be specified as a double-precision floating-point value, specifying the preferred maximum latency in seconds.

AudioListener.dopplerFactor - Web APIs
the deprecated dopplerfactor property of the audiolistener interface is a double value representing the amount of pitch shift to use when rendering a doppler effect.
... syntax var audioctx = new audiocontext(); var mylistener = audioctx.listener; mylistener.dopplerfactor = 1; value a double indicating the doppler effect's pitch shift value.

AudioListener.speedOfSound - Web APIs
the speedofsound property of the audiolistener interface is a double value representing the speed of sound, in meters per second.
... syntax var audioctx = new audiocontext(); var mylistener = audioctx.listener; mylistener.speedofsound = 343.3; value a double.

AudioListener - Web APIs
deprecated features audiolistener.dopplerfactor a double value representing the amount of pitch shift to use when rendering a doppler effect.
... audiolistener.speedofsound is a double value representing the speed of sound, in meters per second.

AudioParam.setValueCurveAtTime() - Web APIs
starttime a double representing the time (in seconds) after the audiocontext was first created that the change in value will happen.
... duration a double representing the total time (in seconds) over which the parameter's value will change following the specified curve.

BudgetService.getCost() - Web APIs
the getcost() property of the budgetservice interface returns a promise that resolves to a double indicating the worst-case background operation cost of the provided background operation.
... syntax var apromise = budgetservice.getcost(operation); apromise.then(function(somedouble){ ...

CSSUnitValue.value - Web APIs
the cssunitvalue.value property of the cssunitvalue interface returns a double indicating the number of units.
... syntax var cssunitvalue = cssunitvalue.value; cssunitvalue.value = cssunitvalue; value a double.

DocumentOrShadowRoot.nodeFromPoint() - Web APIs
syntax var node = document.nodefrompoint(x, y); parameters x a double representing the horizontal coordinate of a point.
... y a double representing the vertical coordinate of a point.

Gamepad.axes - Web APIs
syntax readonly attribute double[] axes; example function gameloop() { if(navigator.webkitgetgamepads) { var gp = navigator.webkitgetgamepads()[0]; } else { var gp = navigator.getgamepads()[0]; } if(gp.axes[0] != 0) { b -= gp.axes[0]; } else if(gp.axes[1] != 0) { a += gp.axes[1]; } else if(gp.axes[2] != 0) { b += gp.axes[2]; } else if(gp.axes[3] != 0) { a -= gp.axes[3]; } ball.style.left = a*2 + "px"; ball.style.top ...
...= b*2 + "px"; var start = raf(gameloop); }; value an array of double values.

GamepadButton.value - Web APIs
the gamepadbutton.value property of the gamepadbutton interface returns a double value used to represent the current state of analog buttons on many modern gamepads, such as the triggers.
... syntax readonly attribute double value; example var gp = navigator.getgamepads()[0]; if(gp.buttons[0].value > 0) { // respond to analog button being pressed in } value a double.

GamepadHapticActuator.pulse() - Web APIs
}); parameters value a double representing the intensity of the pulse.
... duration a double representing the duration of the pulse, in milliseconds.

GeolocationCoordinates.accuracy - Web APIs
the geolocationcoordinates.accuracy read-only property is a strictly positive double representing the accuracy, with a 95% confidence level, of the geolocationcoordinates.latitude and geolocationcoordinates.longitude properties expressed in meters.
... syntax let acc = geolocationcoordinatesinstance.accuracy value a positive double representing the accuracy, with a 95% confidence level, of the geolocationcoordinates.latitude and geolocationcoordinates.longitude properties expressed in meters.

GeolocationCoordinates.altitude - Web APIs
the geolocationcoordinates.altitude read-only property is a double representing the altitude of the position in meters, relative to sea level.
... syntax let alt = geolocationcoordinatesinstance.altitude value a double representing the altitude of the position in meters, relative to sea level.

GeolocationCoordinates.altitudeAccuracy - Web APIs
the geolocationcoordinates.altitudeaccuracy read-only property is a strictly positive double representing the accuracy, with a 95% confidence level, of the altitude expressed in meters.
... syntax let altacc = geolocationcoordinatesinstance.altitudeaccuracy value a positive double representing the accuracy, with a 95% confidence level, of the altitude expressed in meters.

GeolocationCoordinates.heading - Web APIs
the geolocationcoordinates.heading read-only property is a double representing the direction in which the device is traveling.
... syntax let heading = geolocationcoordinatesinstance.heading value a double representing the direction in which the device is traveling.

GeolocationCoordinates.latitude - Web APIs
the geolocationcoordinates.latitude read-only property is a double representing the latitude of the position in decimal degrees.
... syntax let lat = geolocationcoordinatesinstance.latitude value a double representing the latitude of the position in decimal degrees.

GeolocationCoordinates.speed - Web APIs
the geolocationcoordinates.speed read-only property is a double representing the velocity of the device in meters per second.
... syntax let speed = geolocationcoordinatesinstance.speed value a double representing the velocity of the device in meters per second.

HTMLImageElement.srcset - Web APIs
as an example, to state that the corresponding image should be used when the pixel density is double the standard density, you can give the pixel density descriptor 2x or 2.0x.
...all of the following are valid image candidate strings: "images/team-photo.jpg 1x, images/team-photo-retina.jpg 2x, images/team-photo-full 2048w" this string provides versions of an image to be used at the standard pixel density (1x) as well as double that pixel density (2x).

Key Values - Web APIs
gdk_key_dead_abovering (0xfe58) qt::key_dead_abovering (0x01001258) ˚ gdk_key_dead_doubleacute (0xfe59) qt::key_dead_doubleacute (0x01001259) ˝ gdk_key_dead_caron (0xfe5a) qt::key_dead_caron (0x0100125a) ˇ also called a háček; used in czech among other languages.
...ad_hook (0x01001261) ̡ gdk_key_dead_horn (0xfe62) qt::key_dead_horn (0x01001262) ̛ gdk_key_dead_stroke (0xfe63) ̶̶ gdk_key_dead_abovecomma (0xfe64) ̓̓ gdk_key_dead_psili (0xfe64) ᾿ gdk_key_dead_abovereversedcomma (0xfe65) ʽ gdk_key_dead_dasia (0xfe65) ῾ gdk_key_dead_doublegrave (0xfe66) ̏ gdk_key_dead_belowring (0xfe67) ˳ gdk_key_dead_belowmacron (0xfe68) ̱ gdk_key_dead_belowcircumflex (0xfe69) ꞈ gdk_key_dead_belowtilde (0xfe6a) ̰ gdk_key_dead_belowbreve (0xfe6b) ̮ gdk_key_dead_belowdiaeresis (0xfe6c) ̤ gdk_key_dead_invertedbreve (0xfe6d) ̯...

MediaPositionState - Web APIs
thus, a value of 1 is playing at normal speed, 2 is playing at double speed, and so forth.
... negative values indicate that the media is playing in reverse; -1 indicates playback at the normal speed but backward, -2 is double speed in reverse, and so on.

MediaTrackSettings.aspectRatio - Web APIs
the mediatracksettings dictionary's aspectratio property is a double-precision floating-point number indicating the aspect ratio of the mediastreamtrack as currently configured.
... syntax var aspectratio = mediatracksettings.aspectratio; value a double-precision floating-point number indicating the current configuration of the track's aspect ratio.

MediaTrackSettings.frameRate - Web APIs
the mediatracksettings dictionary's framerate property is a double-precision floating-point number indicating the frame rate, in frames per second, of the mediastreamtrack as currently configured.
... syntax var framerate = mediatracksettings.framerate; value a double-precision floating-point number indicating the current configuration of the track's frame rate, in frames per second.

MediaTrackSettings.latency - Web APIs
the mediatracksettings dictionary's latency property is a double-precision floating-point number indicating the estimated latency (specified in seconds) of the mediastreamtrack as currently configured.
... syntax var latency = mediatracksettings.latency; value a double-precision floating-point number indicating the estimated latency, in seconds, of the audio track as currently configured.

MediaTrackSettings.volume - Web APIs
the mediatracksettings dictionary's volume property is a double-precision floating-point number indicating the volume of the mediastreamtrack as currently configured, as a value from 0.0 (silence) to 1.0 (maximum supported volume for the device).
... syntax var volume = mediatracksettings.volume; value a double-precision floating-point number indicating the volume, from 0.0 to 1.0, of the audio track as currently configured.

MouseEvent.clientX - Web APIs
syntax var x = instanceofmouseevent.clientx return value a double floating point value, as redefined by the cssom view module.
... working draft redefines mouseevent from long to double.

MouseEvent.clientY - Web APIs
syntax var y = instanceofmouseevent.clienty return value a double floating point value, as redefined by the cssom view module.
... working draft redefines mouseevent from long to double.

MouseEvent.pageY - Web APIs
the cssom view module redefined it as a double float.
... working draft redefined from long to double.

MouseEvent.screenX - Web APIs
syntax var x = instanceofmouseevent.screenx return value a double floating point value.
... working draft redefines mouseevent from long to double.

MouseEvent.screenY - Web APIs
syntax var y = instanceofmouseevent.screeny return value a double floating point value.
... working draft redefines mouseevent from long to double.

PannerNode.coneInnerAngle - Web APIs
the coneinnerangle property of the pannernode interface is a double value describing the angle, in degrees, of a cone inside of which there will be no volume reduction.
... syntax var audioctx = new audiocontext(); var panner = audioctx.createpanner(); panner.coneinnerangle = 360; value a double.

PannerNode.coneOuterAngle - Web APIs
the coneouterangle property of the pannernode interface is a double value describing the angle, in degrees, of a cone outside of which the volume will be reduced by a constant value, defined by the coneoutergain property.
... syntax var audioctx = new audiocontext(); var panner = audioctx.createpanner(); panner.coneouterangle = 0; value a double.

PannerNode.coneOuterGain - Web APIs
the coneoutergain property of the pannernode interface is a double value, describing the amount of volume reduction outside the cone, defined by the coneouterangle attribute.
... syntax var audioctx = new audiocontext(); var panner = audioctx.createpanner(); panner.coneoutergain = 0; value a double.

PannerNode.maxDistance - Web APIs
the maxdistance property of the pannernode interface is a double value representing the maximum distance between the audio source and the listener, after which the volume is not reduced any further.
... syntax var audioctx = new audiocontext(); var panner = audioctx.createpanner(); panner.maxdistance = 10000; value a double.

PointerEvent.PointerEvent() - Web APIs
width — optional and defaulting to 1, of type double, that sets the value of the instance's pointerevent.width.
... height — optional and defaulting to 1, of type double, that sets the value of the instance's pointerevent.height.

PointerEvent.pointerType - Web APIs
working draft redefines mouseevent from long to double.
... this means that a pointerevent whose pointertype is mouse will be a double.

RTCRtpEncodingParameters - Web APIs
maxframerate a double-precision floating-point value specifying the maximum number of frames per second to allow for this encoding.
... scaleresolutiondownby only used for senders whose track's kind is video, this is a double-precision floating-point value specifying a factor by which to scale down the video during encoding.

RTCRtpSendParameters.encodings - Web APIs
maxframerate a double-precision floating-point value specifying the maximum number of frames per second to allow for this encoding.
... scaleresolutiondownby only used for senders whose track's kind is video, this is a double-precision floating-point value specifying a factor by which to scale down the video during encoding.

Screen.mozBrightness - Web APIs
indicates how bright the screen's backlight is, on a scale from 0 (very dim) to 1 (full brightness); this value is a double-precision float.
...most screens don't support as many different brightness levels as there are doubles between 0 and 1.

SourceBuffer.remove() - Web APIs
syntax sourcebuffer.remove(start, end); parameters start a double representing the start of the time range, in seconds.
... end a double representing the end of the time range, in seconds.

SourceBuffer.removeAsync() - Web APIs
syntax removepromise = sourcebuffer.removeasync(start, end); parameters start a double representing the start of the time range, in seconds.
... end a double representing the end of the time range, in seconds.

TextTrackCue - Web APIs
texttrackcue.starttime a double that represents the video time that the cue will start being displayed, in seconds.
... texttrackcue.endtime a double that represents the video time that the cue will stop being displayed, in seconds.

VTTCue() - Web APIs
syntax vttcue = new vttcue(starttime, endtime, text); parameters starttime this is a double representing the initial text track cue start time.
... endtime this is a double representing the ending time for this text track cue.

Window.devicePixelRatio - Web APIs
syntax value = window.devicepixelratio; value a double-precision floating-point value indicating the ratio of the display's resolution in physical pixels to the resolution in css pixels.
...other values may be returned as well in the case of unusually low resolution displays or, more often, when a screen has a higher pixel depth than simply double the standard resolution of 96 or 76 dpi.

Web APIs
st cssvariablereferencevalue cache cachestorage canvascapturemediastreamtrack canvasgradient canvasimagesource canvaspattern canvasrenderingcontext2d caretposition channelmergernode channelsplitternode characterdata childnode client clients clipboard clipboardevent clipboarditem closeevent comment compositionevent constantsourcenode constrainboolean constraindomstring constraindouble constrainulong contentindex contentindexevent convolvernode countqueuingstrategy crashreportbody credential credentialscontainer crypto cryptokey cryptokeypair customelementregistry customevent d domconfiguration domerror domexception domhighrestimestamp domimplementation domimplementationlist domlocator dommatrix dommatrixreadonly domobject domparser dompoint dompointinit ...
...eritem datatransferitemlist dedicatedworkerglobalscope delaynode deprecationreportbody devicelightevent devicemotionevent devicemotioneventacceleration devicemotioneventrotationrate deviceorientationevent deviceproximityevent directoryentrysync directoryreadersync displaymediastreamconstraints document documentfragment documentorshadowroot documenttimeline documenttouch documenttype doublerange dragevent dynamicscompressornode e ext_blend_minmax ext_color_buffer_float ext_color_buffer_half_float ext_disjoint_timer_query ext_float_blend ext_frag_depth ext_srgb ext_shader_texture_lod ext_texture_compression_bptc ext_texture_compression_rgtc ext_texture_filter_anisotropic eckeygenparams eckeyimportparams ecdhkeyderiveparams ecdsaparams effecttiming element elementcssinlinestyle ele...

Perceivable - Accessibility
1.4.4 resize text (aa) the page should be readable and usable when the text size is doubled.
... when the text size is doubled, the content should not need to be scrolled.

@charset - CSS: Cascading Style Sheets
it must be the name of a web-safe character encoding defined in the iana-registry, and must be double-quoted, following exactly one space character (u+0020), and immediately terminated with a semicolon.
... iossamsung internet@charsetchrome full support 2edge full support 12firefox full support 1.5notes full support 1.5notes notes firefox 1 supported an invalid syntax where the character encoding is not between single or double quotes.ie full support 5.5notes full support 5.5notes notes from internet explorer 5.5 to ie 7 (inclusive), internet explorer supported an invalid syntax where the character encoding is not between single or double quotes.opera full support 9safari ...

text-emphasis - CSS: Cascading Style Sheets
double-circle display double circles as marks.
... the filled double-circle is '◉' (u+25c9), and the open double-circle is '◎' (u+25ce).

touch-action - CSS: Cascading Style Sheets
manipulation enable panning and pinch zoom gestures, but disable additional non-standard gestures such as double-tap to zoom.
... disabling double-tap to zoom removes the need for browsers to delay the generation of click events when the user taps the screen.

translate() - CSS: Cascading Style Sheets
syntax /* single <length-percentage> values */ transform: translate(200px); transform: translate(50%); /* double <length-percentage> values */ transform: translate(100px, 200px); transform: translate(100px, 50%); transform: translate(30%, 200px); transform: translate(30%, 50%); values single <length-percentage> values this value is a <length> or <percentage> representing the abscissa (horizontal, x-coordinate) of the translating vector.
... double <length-percentage> values this value describes two <length> or <percentage> values representing both the abscissa (x-coordinate) and the ordinate (y-coordinate) of the translating vector.

url() - CSS: Cascading Style Sheets
syntax values <string> <url> a url, which is a relative or absolute address, or pointer, to the web resource to be included, or a data uri, optionally in single or double quotes.
...double quotes cannot occur inside double quotes and single quotes cannot occur inside single quotes unless escaped.

<url> - CSS: Cascading Style Sheets
it may be written without quotes, or surrounded by single or double quotes.
... if you choose to write the url without quotes, use a backslash (\) before any parentheses, whitespace characters, single quotes (') and double quotes (") that are part of the url.

<audio>: The Embed Audio element - HTML: Hypertext Markup Language
currenttime reading currenttime returns a double-precision floating-point value indicating the current playback position, in seconds, of the audio.
... duration read only a double-precision floating-point value which indicates the duration (total length) of the audio in seconds, on the media's timeline.

<input type="datetime-local"> - HTML: Hypertext Markup Language
the y2k38 problem (often server-side) javascript uses double precision floating points to store dates, as with all numbers, meaning that javascript code will not suffer from the y2k38 problem unless integer coercion/bit-hacks are used because all javascript bit operators use 32-bit signed 2s-complement integers.
...to fix this problem, you must store all dates using either unsigned 32-bit integers, signed 64-bit integers, or double-precision floating points on the server.

<video>: The Video Embed element - HTML: Hypertext Markup Language
currenttime reading currenttime returns a double-precision floating-point value indicating the current playback position of the media specified in seconds.
... duration read only a double-precision floating-point value which indicates the duration (total length) of the media in seconds, on the media's timeline.

A re-introduction to JavaScript (JS tutorial) - JavaScript
numbers numbers in javascript are "double-precision 64-bit format ieee 754 values", according to the spec — there's no such thing as an integer in javascript (except bigint), so you have to be a little careful.
...the double-equals operator performs type coercion if you give it different types, with sometimes interesting results: 123 == '123'; // true 1 == true; // true to avoid type coercion, use the triple-equals operator: 123 === '123'; // false 1 === true; // false there are also != and !== operators.

Text formatting - JavaScript
string literals you can create simple strings using either single or double quotes: 'foo' "bar" more advanced strings can be created using escape sequences: hexadecimal escape sequences the number after \x is interpreted as a hexadecimal number.
... template literals are enclosed by the back-tick (` `) (grave accent) character instead of double or single quotes.

DataView - JavaScript
dataview.prototype.getfloat64() gets a signed 64-bit float (double) at the specified byte offset from the start of the view.
... dataview.prototype.setfloat64() stores a signed 64-bit float (double) value at the specified byte offset from the start of the view.

JSON - JavaScript
objects and arrays property names must be double-quoted strings; trailing commas are forbidden.
... consider this example where json.parse() parses the string as json and eval executes the string as javascript: let code = '"\u2028\u2029"' json.parse(code) // evaluates to "\u2028\u2029" in all engines eval(code) // throws a syntaxerror in old engines other differences include allowing only double-quoted strings and having no provisions for undefined or comments.

Math.fround() - JavaScript
syntax var singlefloat = math.fround(doublefloat); parameters doublefloat a number.
... description javascript uses 64-bit double floating-point numbers internally, which offer a very high precision.

Lexical grammar - JavaScript
abstract boolean byte char double final float goto int long native short synchronized throws transient volatile additionally, the literals null, true, and false cannot be used as identifiers in ecmascript.
... [1954, 1974, 1990, 2014] string literals a string literal is zero or more unicode code points enclosed in single or double quotes.

Logical NOT (!) - JavaScript
to explicitly convert its return value (or any expression in general) to the corresponding boolean value, use a double not operator or the boolean constructor.
... n1 = !true // !t returns false n2 = !false // !f returns true n3 = !'' // !f returns true n4 = !'cat' // !t returns false double not (!!) it is possible to use a couple of not operators in series to explicitly force the conversion of any value to the corresponding boolean primitive.

<ms> - MathML
by default, string literals are displayed as enclosed by double quotes (&quot;); by using the lquote and rquote attributes, you can set custom characters to display.
...the following values are allowed: normal (default value) ; example bold ; example italic ; example bold-italic ; example double-struck ; example bold-fraktur ; example script ; example bold-script ; example fraktur ; example sans-serif ; example bold-sans-serif ; example sans-serif-italic ; example sans-serif-bold-italic ; example monospace ; example initial ; مثال tailed ; مثال looped ; مثال stretched ; مثال rquote the closing quote mark (depends on dir) to enclos...

<feComposite> - SVG: Scalable Vector Graphics
the second set does not wipe out the background, with the result that the background sometimes shines through and is other cases is blended into itself (i.e., "double-counting").</desc> <filter id="overflood" filterunits="objectboundingbox" x="-5%" y="-5%" width="110%" height="110%"> <feflood flood-color="#ffffff" flood-opacity="1" result="flood"/> <fecomposite in="sourcegraphic" in2="backgroundimage" operator="over" result="comp"/> <femerge> <femergenode in="flood"/> <femergenode in="comp"/> </femerge> </filter> <filter id="inflo...
...thmeticflood)" /> <text x="-25" y="275">arithmetic</text> </g> </g> <g transform="translate(0,325)" enable-background="new"> <desc>render the examples using the filters that do not obliterate the background, thus sometimes causing the background to continue to appear in some cases, and in other cases the background image blends into itself ("double-counting").</desc> <text x="15" y="75">opacity 1.0</text> <text x="15" y="115" font-size="27">(without feflood)</text> <text x="15" y="200">opacity 0.5</text> <text x="15" y="240" font-size="27">(without feflood)</text> <use xlink:href="#bluetriangles"/> <g transform="translate(275,25)"> <use xlink:href="#red100" filter="url(#overnoflood)" /> <u...

ui/button/action - Archive of obsolete content
on a high resolution screen (such as a hidpi display), these are doubled to 36 x 36 and 64 x 64 pixels, respectively.

ui/button/toggle - Archive of obsolete content
on a high resolution screen (such as a hidpi display), these are doubled to 36 x 36 and 64 x 64 pixels, respectively.

Storing annotations - Archive of obsolete content
if the annotation does not reappear when you restart firefox, double check you installed the add-on and didn't just use cfx run again.

Running applications - Archive of obsolete content
this method has the same effect as if you double-clicked the file, so for executable files—it will just run the file without any parameters.

Chapter 1: Introduction to Extensions - Archive of obsolete content
text link makes it so that double-clicking on an unlinked url follows that url.

Chapter 5: Let's build a Firefox extension - Archive of obsolete content
true javascript.options.strict (present in firefox 3.5+) enforces strict error output from javascript true table 1: preferences to set for developing extensions to make these changes, start your development profile, type about:config into firefox’s location bar and open the preferences window; find the preferences listed in table 1 and double-click on them to set them accordingly.

Chapter 4: Using XPCOM—Implementing advanced processes - Archive of obsolete content
text file input listing 15 shows an example of opening a text file encoded as shift-jis (a double-byte character encoding for japanese).

Setting Up a Development Environment - Archive of obsolete content
with that, you should now have a very easy way to build your xpi, by just double clicking on the created commands.

Setting up an extension development environment - Archive of obsolete content
to run this version of firefox, simply double click on this file.

An Interview With Douglas Bowman of Wired News - Archive of obsolete content
the sheer amount [sic] of redundant <font> tags inside every cell was probably enough to double file size.

Creating reusable content with CSS and XBL - Archive of obsolete content
challenges change the xbl file so that the square doubles in width when it changes color, instead of jumping to the right.

chargingtimechange - Archive of obsolete content
property type description batterymanager.chargingtime double (float) the remaining time in seconds until the system's battery is fully charged.

dischargingtimechange - Archive of obsolete content
property type description batterymanager.dischargingtime double (float) the remaining time in seconds until the system's battery is completely discharged and the system is about to be suspended.

levelchange - Archive of obsolete content
property type description batterymanager.level double (float) the system's battery charging level scaled from 0 to 1.0.

Automatically Handle Failed Asserts in Debug Builds - Archive of obsolete content
note that double quotes which delimit an item (") are ignored in value names and the assertion string, so "silly" and silly will both be matched by a value named silly.

Getting Started - Archive of obsolete content
if it doesn't appear as you expected, then go back into the installed-chrome.txt file and double check that you modified the lines correctly.

In-Depth - Archive of obsolete content
if the navigation toolbar dissapears or something, go back and double check everything.

Developing New Mozilla Features - Archive of obsolete content
if there is no response, double-check to see if you have been successful with suggestion five.

Bundles - Archive of obsolete content
how-to here is a simple way to build a basic web application bundle: create file called webapp.ini that contains something like: [parameters] id=unique-app-id@unique-author-id.whatever name=webapp name uri=http://[the-url-what-you-want-to-connect-to]/ status=yes location=no sidebar=no navigation=no zip the file to [whatever].webapp double-click the webapp bundle or use prism -webapp [path-to-webapp] structure a bundle can contain the following files.

Installer - Archive of obsolete content
this means that when you double-click or launch a *.webapp file, prism is launched and automatically opens the web application.

Frequently Asked Questions - Archive of obsolete content
when you double click on the pref you will see its value change to and from true/false, turning the native support on/off.

SpiderMonkey coding conventions - Archive of obsolete content
scalar type names are lowercase and js-prefixed: jsdouble.

Treehydra Manual - Archive of obsolete content
there is a sample application that checks for double-locking in a simple mutex api in test/esp_lock.js.

Event Handlers - Archive of obsolete content
this allows xbl authors to easily define handlers for right-click, or for left double-click, without having to write script on the same handler to differentiate those cases.

Windows Install - Archive of obsolete content
(spaceavailable < spacerequired) { logcomment("insufficient disk space: " + dirpath); logcomment(" required : " + spacerequired + " k"); logcomment(" available: " + spaceavailable + " k"); return(false); } return(true); } function updatewinreg4ren8dot3() { var fprogram = getfolder("program"); var ftemp = getfolder("temporary"); //notes: // can't use a double backslash before subkey // - windows already puts it in.

modDateChanged - Archive of obsolete content
anolddate a double representing the date.

query.type - Archive of obsolete content
« xul reference home type type: one of the values below the type of the parameter's value integer 32 bit integer int64 64 bit integer double double-precision floating-point number string string literal, the default value ...

treecell.editable - Archive of obsolete content
when the user double-clicks an editable cell, a text field appears in which the user can edit the contents of the cell.

treecol.editable - Archive of obsolete content
when the user double-clicks an editable cell, a text field appears in which the user can edit the contents of the cell.

Reading from Files - Archive of obsolete content
readdouble will read eight bytes and interpret them as a double floating point value.

Writing to Files - Archive of obsolete content
writedouble will write a floating point value in eight bytes.

Building Hierarchical Trees - Archive of obsolete content
if a node is a container, the tree item becomes a container, and the user may open the row by double-clicking it.

SQLite Templates - Archive of obsolete content
you can also use the value double for double precision floating point values.

Code Samples - Archive of obsolete content
note: on operating systems that use backslash characters, double each backslash character.

Accesskey display rules - Archive of obsolete content
so, "(c)" will be doubled.

Creating a Window - Archive of obsolete content
you should also be able to double-click the file in your file manager, assuming that xul files are associated with mozilla.

Property Files - Archive of obsolete content
double-check the save options of your text editor, because many don't do this by default.

Tree Box Objects - Archive of obsolete content
in fact, this is what the underlying tree code does when the user double clicks the twisty.

XUL Structure - Archive of obsolete content
you can load xul files from your own machine by opening them in the browser, or by double-clicking the file in your file manager.

Using the Editor from XUL - Archive of obsolete content
the nseditorshellmouselistener essentially calls nseditorshell::handlemouseclickonelement to show property dialogs for items that you double-click on.

XUL accessibility guidelines - Archive of obsolete content
to solve this problem, we use the aria-labelledby attribute on both controls (note the double l—aria uses uk-style spelling) to specify that the checkbox and the textbox are both labeled by the the entire group of components.

param - Archive of obsolete content
type type: one of the values below the type of the parameter's value integer 32 bit integer int64 64 bit integer double double-precision floating-point number string string literal, the default value properties inherited properties align, , allowevents, , boxobject, builder, , , , classname, , , , , collapsed, contextmenu, controllers, database, datasources, dir, , , flex, height, hidden, id, , , left, , maxheight, maxwidth, menu, minheight, minwidth, , , , , , , observes, ordinal, orient, , pac...

treecell - Archive of obsolete content
when the user double-clicks an editable cell, a text field appears in which the user can edit the contents of the cell.

treecol - Archive of obsolete content
when the user double-clicks an editable cell, a text field appears in which the user can edit the contents of the cell.

nsIContentPolicy - Archive of obsolete content
if you do any of these things in your shouldload() implementation, expect unpredictable behavior, possibly including crashes, content not showing up, content showing up doubled, etc.

Monitoring plugins - Archive of obsolete content
"experimental-notify-plugin-call") //in case your class is registered to listen to other topics //this gets executed each time a runtime notification arrives // --your code goes here-- } }, //takes care of registering the observer services for the "experimental-notify-plugin-call" topic register: function() { if (this.registered == false) { //this check prevents double registration -- something you want to avoid!!

NPVariantType - Archive of obsolete content
syntax typedef enum { npvarianttype_void, npvarianttype_null, npvarianttype_bool, npvarianttype_int32, npvarianttype_double, npvarianttype_string, npvarianttype_object } npvarianttype; description each type is self-explanatory.

Sunbird Theme Tutorial - Archive of obsolete content
veloper.mozilla.org/" em:version="0.1" em:internalname="testing" em:type="4" > <em:targetapplication><!-- sunbird --> <description em:id="{718e30fb-e89b-41dd-9da7-e25a45638b28}" em:minversion="0.2.9" em:maxversion="0.4" /> </em:targetapplication> </description> </rdf> in the line that starts <tt>em:id</tt>, paste your identifier between the double-quote characters, replacing the identifier that is there now.

Common Firefox theme issues and solutions - Archive of obsolete content
this issue also applies to the edit bookmark panel, which is activated by double clicking on the bookmark star in the url bar.

-ms-content-zooming - Archive of obsolete content
the top-level element can also be zoomed via double-tap when it is zoom-enabled.

-ms-filter - Archive of obsolete content
when you use -ms-filter, enclose the progid in single quotes (') or double quotes (").

Archived JavaScript Reference - Archive of obsolete content
()the static reflect.enumerate() method used to return an iterator with the enumerable own and inherited properties of the target object, but has been removed in ecmascript 2016 and is deprecated in browsers.string.prototype.quote()the non-standard quote() method returns a copy of the string, replacing various special characters in the string with their escape sequences and wrapping the result in double-quotes (").

Examples - Archive of obsolete content
-us" xml:lang="en-us"> <head> <title>problem 3 - comments in xml</title> <meta http-equiv="content-type" content="application/xhtml+xml; charset=utf-8" /> <script type="text/javascript"> var i; var sum = 0; for (i = 10; i > 0; --i) { sum += i; } </script> </head> <body> <h1>problem 3 - comments in xhtml</h1> <p> this document is not well formed xhtml due to the double dash contained in the comment.

XForms Range Element - Archive of obsolete content
type restrictions the range element can be bound to a node of type xsd:duration, xsd:date, xsd:time, xsd:datetime, xsd:gyearmonth, xsd:gyear, xsd:gmonthday, xsd:gday, xsd:gmonth, xsd:float, xsd:decimal or xsd:double or any type derived from one of these.

Animations and tweens - Game development
that's the expanded version of the tween definition, but we can also use the shorthand syntax: game.add.tween(brick.scale).to({x:2,y:2}, 500, phaser.easing.elastic.out, true, 100); this tween will double the brick's scale in half a second using elastic easing, will start automatically, and have a delay of 100 miliseconds.

BigInt - MDN Web Docs Glossary: Definitions of Web-related terms
in other programming languages different numeric types can exist, for examples: integers, floats, doubles, or bignums.

First-class Function - MDN Web Docs Glossary: Definitions of Web-related terms
2- using double parentheses function sayhello() { return function() { console.log("hello!"); } } sayhello()(); we are using double parentheses ()() to invoke the returned function as well.

Polymorphism - MDN Web Docs Glossary: Definitions of Web-related terms
for example, integers, floats, and doubles are implicitly polymorphic: regardless of their different types, they can all be added, subtracted, multiplied, and so on.

SQL Injection - MDN Web Docs Glossary: Definitions of Web-related terms
how to prevent before executing the queries for the user credentials, make some changes like the following: $id = $_get['id'] (1) $id = stripslashes($id) (2) $id = mysql_real_escape_string($id) so due to (1) each single quote (') in the input string is replaced with double quotes ("), and due to (2) before every (') it adds (/).

WCAG - MDN Web Docs Glossary: Definitions of Web-related terms
conformance to this level is described as aa or double-a.

CSS and JavaScript accessibility best practices - Learn web development
to mitigate such problems, you should double up these events with similar events that can be activated by other means (so-called device-independent event handlers) — focus and blur would provide accessibility for keyboard users.

WAI-ARIA basics - Learn web development
if you just load the file by loading it directly into the browser (via double clicking, etc.).

Cascade and inheritance - Learn web development
the effect of css location finally, it is also useful to note that the importance of a css declaration depends on what stylesheet it is specified in — it is possible for users to set custom stylesheets to override the developer's styles, for example the user might be visually impaired, and want to set the font size on all web pages they visit to be double the normal size to allow for easier reading.

Fundamental CSS comprehension - Learn web development
project brief you have been provided with some raw html and an image, and need to write the necessary css to style this into a nifty little online business card, which can perhaps double as a gamer card or social media profile.

Grids - Learn web development
to be on the safe side, you could double up and add both properties to make your code more bulletproof.

Fundamental text and font styling - Learn web development
body text generally looks nicer and is easier to read when the lines are spaced apart; the recommended line height is around 1.5 – 2 (double spaced.) so to set our lines of text to 1.6 times the height of the font, you'd use this: line-height: 1.6; applying this to the <p> elements in our example would give us this result: hidden example2 <h1>tommy the cat</h1> <p>well i remember it as though it were a meal ago...</p> <p>said tommy the cat as he reeled back to clear whatever foreign matter may have nestled its way into his mig...

Styling links - Learn web development
the outline is a useful accessibility aid, so think carefully before turning it off; you should at least double up the styles given to the link hover state on the focus state too.

What text editors are available? - Learn web development
these instructions will help you specify that your os should open files in your preferred editor when you double-click them: windows windows 8 windows 7 older systems mac os x linux ubuntu unity gnome kde next steps now that you have a good text editor, you could take some time to finalize your basic working environment, or, if you want to play with it right away, write your very first web page.

How do you upload your files to a web server? - Learn web development
you can double-check by going back to your website (e.g.

What are browser developer tools? - Learn web development
double-click an element, or right-click it and choose edit as html from the context menu.

How do you set up a local testing server? - Learn web development
remote files throughout most of the learning area, we tell you to just open your examples directly in a browser — this can be done by double clicking the html file, dragging and dropping it into the browser window, or choosing file > open...

How to build custom form controls - Learn web development
because our control is focusable, we double this custom style with the :focus pseudo-class in order to be sure they will behave the same.

The web and web standards - Learn web development
recent published figures say that there are currently around 19 million web developers in the world, and that figure is set more than double in the next decade.

From object to iframe — other embedding technologies - Learn web development
if you made it, double-check it anyway.

Index - Learn web development
beginner, express, flask, learn, node, php, python, django, lamp, server-side, servers throughout most of the learning area, we tell you to just open your examples directly in a browser — this can be done by double clicking the html file, dragging and dropping it into the browser window, or choosing file > open...

Introduction to events - Learn web development
btn.ondblclick — the color changes only when the button is double-clicked.

Basic math in JavaScript — numbers and operators - Learn web development
doubles are a specific type of floating point number that have greater precision than standard floating point numbers (meaning that they are accurate to a greater number of decimal places).

Storing the information you need — Variables - Learn web development
when you give a variable a string value, you need to wrap it in single or double quote marks; otherwise, javascript tries to interpret it as another variable name.

What is JavaScript? - Learn web development
there are two types: a single line comment is written after a double forward slash (//), e.g.

Solve common problems in your JavaScript code - Learn web development
do you have to use single quotes or double quotes?

Working with JSON - Learn web development
json requires double quotes to be used around strings and property names.

Client-Server Overview - Learn web development
the example below gets a list of all teams that have the exact (case sensitive) team_type of "junior" — note the format: field name (team_type) followed by double underscore, and then the type of match to use (in this case exact).

Ember interactivity: Events, classes and state - Learn web development
add the new line shown below to your header.hbs file: <input class='new-todo' aria-label='what needs to be done?' placeholder='what needs to be done?' autofocus {{on 'keydown' this.onkeydown}} > this new attribute is inside double curly braces, which tells you it is part of ember's dynamic templating syntax.

Framework main features - Learn web development
handlebars uses a double-pair of curly braces, instead of a single pair.

Working with Svelte stores - Learn web development
low the existing ones: import { fly } from 'svelte/transition' to use it, update your opening <div> tag like so: <div role="alert" on:click={() => visible = false} transition:fly > transitions can also receive parameters, like this: <div role="alert" on:click={() => visible = false} transition:fly="{{delay: 250, duration: 300, x: 0, y: -100, opacity: 0.5}}" > note: the double curly braces are not special svelte syntax.

Implementing feature detection - Learn web development
note: the double not in the above example (!!) is a way to force a return value to become a "proper" boolean value, rather than a truthy/falsy value that may skew the results.

Strategies for carrying out testing - Learn web development
at this point, you can double-click to open it — it will start to boot up the virtual machine, but it won't yet have the operating system (os) installed.

Accessibility/LiveRegionDevGuide
both events should not be acted upon or double announcements would result.

Accessible Toolkit Checklist
space bar toggles checkboxes the enter key should activate an item if double clicking would do so msaa support, including accessible selection, exposing current level and position in list, alternative text for informative or interactive images, selectable, multiselectable and extselectable states, statechange events for expanding/collapsing and toggling of checkbox children.

Commenting IDL for better documentation
*/ const integer cookie_flavor_double_chocolate = 4; /** * an unknown type of cookie.

SVG Guidelines
basics two spaces indenting no useless whitespaces or line breaks (see below for more details) adding a license header use double quotes whitespace and line breaks whitespace in addition to trailing whitespace at the end of lines, there are a few more cases more specific to svgs: trailing whitespaces in attribute values (usually seen in path definitions) excessive whitespace in path or polygon points definition examples this path: <path d=" m5,5 l1,1z "> can be cut down to this: <path d="m5,5 l1,1z"> sim...

Multiple Firefox profiles
now whenever you double click that icon, the profile manager should appear, allowing you to choose which profile you'd like to use.

Performance best practices for Firefox front-end engineers
flushing layout also means that styles must be flushed to calculate the most up-to-date state of things, so it's a double-whammy.

CustomizableUI.jsm
otherwise, conflicting static xul overlay button and dynamic customizableui buttons might cause the created button to be unstable or create a double button.

Following the Android Toasts Tutorial from a JNI Perspective
the sig's will be represented as javascript strings in jni.jsm, and the sig's of the types are as follows: java type signature boolean z byte b char c class/object lclass name in slash notation here; double d float f int i long j short s void v array of type [sig here method format (sig of type of each argument here)sig of the return type here declaring a class/object is done in a special way.

Mozilla Framework Based on Templates (MFBT)
floatingpoint.h provides various operations for examining and working upon double-precision floating point values, and for producing various special floating point values.

Fonts for Mozilla's MathML engine
double-click the latinmodern-math font file click the "install the font" button from the window that opens.

Fonts for Mozilla 2.0's MathML engine
to write double-struck, script or fraktur text).

MathML Accessibility in Mozilla
torture test 17: ∬ d dx dy __________ double integral over cap d of d x d y __________ ∬, subscript d, dxdy webkit's bug 146505 double integral.

Mozilla Style System Documentation
this double tree (style context tree and rule tree) allows for sharing of style data, which allows the data to take up less memory and allows the data computation to take less time.

Gecko Profiler FAQ
[mstange] in my opinion, as long as you double-check that the problems you find are actually present on windows, it doesn’t matter much what platform you find them on.

TimerFirings logging
.mozilla.org/repair/:7:13669 118 801266240[7f7c1f248000]: [7163] fn timer (one_shot 100 ms): [content] http://a.visualrevenue.com/vrs.js:6:9423 103 801266240[7f7c1f248000]: [7163] fn timer (one_shot 50 ms): [content] http://static.dynamicyield.com/scripts/12086/dy-min.js?v=12086:3:3389 94 801266240[7f7c1f248000]: [7163] fn timer (one_shot 50 ms): [content] https://ad.doubleclick.net/ddm/adi/n7921.1283839cadreon.com.au/b9038144.122190976;sz=300x600;click=http://pixel.mathtag.com/click/img?mt_aid=2744535504761193354&mt_id=1895890&mt_adid=148611&mt_sid=973379&mt_exid=9&mt_inapp=0&mt_uuid=353d5460-19f6-4400-9bbd-d0fcc3bcf595&mt_3pck=http%3a//beacon-apac-hkg1.rubiconproject.com/beacon/t/d1f9921d-4e47-448f-b6ba-36cae1c31b65/&redirect=;ord=2744535504761193354?:83:0 94...

PL_HashTableAdd
it doubles the number of buckets if the table is overloaded.

PRFloat64
syntax #include <prtypes.h> typedef double prfloat64; ...

PR_cnvtf
fval the double-precision floating point number to be converted.

Index
prints root cert subject(double the argument for whole root cert info) -w password database password -w pwfile password file revocation options for pkix api (invoked with -pp options) is a collection of the following flags: [-g type [-h flags] [-m type [-s flags]] ...] ...

NSS_3.12_release_notes.html
_objects_from_handles bug 415007: pk11_findcertfromdersubjectandnickname is dead code bug 416267: compiler warnings on solaris due to extra semicolon in sec_asn1_mksub bug 419763: logger thread should be joined on exit bug 424471: counter overflow in 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...

NSS 3.14.2 release notes
bug 373108 - fixed a bug where, under certain circumstances, when applications supplied invalid/out-of-bounds parameters for aes encryption, a double free may occur.

NSS 3.15.1 release notes
the nss_survive_double_bypass_failure build option is removed.

PKCS11 Implement
the supplied library names are used as the default library names; currently, these names should not include any double quotation marks.

NSS tools : vfychain
prints root cert subject(double the argument for whole root cert info) -w password database password -w pwfile password file revocation options for pkix api (invoked with -pp options) is a collection of the following flags: [-g type [-h flags] [-m type [-s flags]] ...] ...

NSS tools : vfychain
prints root cert subject(double the argument for whole root cert info) -w password database password -w pwfile password file revocation options for pkix api (invoked with -pp options) is a collection of the following flags: [-g type [-h flags] [-m type [-s flags]] ...] ...

Hacking Tips
break 'mozilla::dom::canvasrenderingcontext2d::drawwindow(nsglobalwindow&, double, double, double, double, nsastring_internal const&, unsigned int, mozilla::errorresult&)' cont break 'presshell::renderdocument(nsrect const&, unsigned int, unsigned int, gfxcontext*)' set print object on set $x = <your x value> set $y = <your y value> print &((cairo_image_surface_t*)athebescontext->mdt.mrawptr->msurface).data[$y * ((cairo_image_surface_t*)athebescontext->mdt.mrawptr->msurf...

64-bit Compatibility
tracemonkey uses this to decide whether arbitrary constants in lir are pointers or doubles.

Bytecode Descriptions
double operands: (double val) stack: ⇒ val push the 64-bit floating-point immediate operand as a doublevalue.

Introduction to the JavaScript shell
kind is either 'all' (default) to count all things or one of 'object', 'double', 'string', 'function', 'qname', 'namespace', 'xml' to count only things of that kind.

JIT Optimization Outcomes
arraydoubleconversion the type-system indicates that some arrays at this site should be converted to packed arrays of doubles while others should not.

JS::Float32Value
see also mxr id search for js::float32value js::value js::int32value js::doublevalue js::numbervalue js_numbervalue ...

JS::Int32Value
see also mxr id search for js::int32value js::value js::float32value js::doublevalue js::numbervalue js_numbervalue ...

JSVAL_IS_GCTHING
javascript performs automatic garbage collection of objects, strings, and doubles.

JSVAL_IS_NUMBER
example the following code snippet illustrates how a javascript variable, myitem, is conditionally tested in an if statement to see if it is a js integer or double value.

JS_ClearNewbornRoots
description the last gc thing of each type (object, string, double, external string types) created on a given context is kept alive until another thing of the same type is created, using a newborn root in the context.

JS_DefineProperties
see also mxr id search for js_defineproperties js_defineconstdoubles js_defineelement js_definefunction js_definefunctions js_defineobject js_defineproperty js_initclass bug 855582 ...

JS_DumpNamedRoots
it points to a variable, array element, or field of type jsval, jsobject *, jsstring *, or jsdouble *.

JS_LockGCThing
thing is a pointer to a jsdouble, jsstring, or jsobject.

JS_LooselyEqual
comparing jsvals directly in c++, as in v1 == v2, does not produce a meaningful result, since it is possible for two distinct jsstrings or jsdoubles to represent the same string or number.

JS_MapGCRoots
the map function cannot call js_gc, js_maybegc, js_beginrequest, or any js api entry point that acquires locks, without double-tripping or deadlocking on the gc lock.

JS_StrictlyEqual
comparing jsvals directly in c++, as in v1 == v2, does not produce a meaningful result, since it is possible for two distinct jsstrings or jsdoubles to represent the same string or number.

JS_TracerInit
kind uint32 one of the constants jstrace_object, jstrace_double, jstrace_string; or a tag denoting an internal implementation-specific traversal kind.

SpiderMonkey 1.8.8
obsolete typedef replacement type provided by uint8, int8, uint16, int16, uint32, int32, uint64, int64 uint8_t, int8_t, uint16_t, int16_t, uint32_t, int32_t, uint64_t, int64_t mozilla/stdint.h uintn, intn unsigned (also known as unsigned int), int n/a jsdouble double n/a jsuintn, jsintn unsigned (also known as unsigned int), int n/a jspackedbool n/a n/a jsrefcount n/a n/a the fixed-size integer types are defined in one of the following ways: if the environment variable moz_custom_stdint_h is set, that file will be included to provide definitions for these types.

SpiderMonkey 17
obsolete typedef replacement type provided by uint8, int8, uint16, int16, uint32, int32, uint64, int64 uint8_t, int8_t, uint16_t, int16_t, uint32_t, int32_t, uint64_t, int64_t mozilla/stdint.h uintn, intn unsigned (also known as unsigned int), int n/a jsdouble double n/a jsuintn, jsintn unsigned (also known as unsigned int), int n/a jspackedbool n/a n/a jsrefcount n/a n/a the fixed-size integer types are defined in one of the following ways: if the environment variable moz_custom_stdint_h is set, that file will be included to provide definitions for these types.

WebReplayRoadmap
doubles, or objects that have the same set of properties.

XPCOM array guide
// no need for the double-pointer, and this violates xpcom rules // which expect acess to a new object void tweakarray(nsimutablearray** elements) { // ugh, extra indirection!

Avoiding leaks in JavaScript XPCOM components
tion() { return (private_data += 1); } result[1] = function() { return (private_data *= 2); } return result; } // this function returns the string "results: 1, 2, 4, 0, 5, 1, 10." function test() { var fns1 = function_array(); var fns2 = function_array(); return "results: " + fns1[0]() + ", " + // increments first private_data to 1 fns1[1]() + ", " + // doubles first private_data to 2 fns1[1]() + ", " + // doubles first private_data to 4 fns2[1]() + ", " + // doubles second private_data to 0 fns1[0]() + ", " + // increments first private_data to 5 fns2[0]() + ", " + // increments second private_data to 1 fns1[1]() + "."; // doubles first private_data to 10 } this shows that clos...

Detailed XPCOM hashtable guide
note: because of the double-hashing implementation, entries may move in memory when the hashtable is altered.

XPConnect wrappers
double wrapping.

XPCshell Test Manifest Expressions
strings: any series of characters enclosed in double quotes " or single quotes '.

NS_ConvertASCIItoUTF16
int32 ainteger print32 aradix void appendint(pruint32, print32) - source append the given unsigned integer to this string parameters pruint32 ainteger print32 aradix void appendint(print64, print32) - source parameters print64 ainteger print32 aradix appendfloat void appendfloat(float) - source append the given float to this string parameters float afloat void appendfloat(double) - source parameters double afloat beginreading prunichar* beginreading() const - source reading iterators nsreadingiterator<short unsigned int>& beginreading(nsreadingiterator<short unsigned int>&) const - source deprecated reading iterators parameters nsreadingiterator<short unsigned int>& iter prunichar*& beginreading(const prunichar*&) const - source parameters prunicha...

NS_ConvertUTF16toUTF8
int32 ainteger print32 aradix void appendint(pruint32, print32) - source append the given unsigned integer to this string parameters pruint32 ainteger print32 aradix void appendint(print64, print32) - source parameters print64 ainteger print32 aradix appendfloat void appendfloat(float) - source append the given float to this string parameters float afloat void appendfloat(double) - source parameters double afloat beginreading char* beginreading() const - source reading iterators nsreadingiterator<char>& beginreading(nsreadingiterator<char>&) const - source deprecated reading iterators parameters nsreadingiterator<char>& iter char*& beginreading(const char*&) const - source parameters char*& iter endreading char* endreading() const - source ...

NS_ConvertUTF8toUTF16
int32 ainteger print32 aradix void appendint(pruint32, print32) - source append the given unsigned integer to this string parameters pruint32 ainteger print32 aradix void appendint(print64, print32) - source parameters print64 ainteger print32 aradix appendfloat void appendfloat(float) - source append the given float to this string parameters float afloat void appendfloat(double) - source parameters double afloat beginreading prunichar* beginreading() const - source reading iterators nsreadingiterator<short unsigned int>& beginreading(nsreadingiterator<short unsigned int>&) const - source deprecated reading iterators parameters nsreadingiterator<short unsigned int>& iter prunichar*& beginreading(const prunichar*&) const - source parameters prunicha...

NS_LossyConvertUTF16toASCII
int32 ainteger print32 aradix void appendint(pruint32, print32) - source append the given unsigned integer to this string parameters pruint32 ainteger print32 aradix void appendint(print64, print32) - source parameters print64 ainteger print32 aradix appendfloat void appendfloat(float) - source append the given float to this string parameters float afloat void appendfloat(double) - source parameters double afloat beginreading char* beginreading() const - source reading iterators nsreadingiterator<char>& beginreading(nsreadingiterator<char>&) const - source deprecated reading iterators parameters nsreadingiterator<char>& iter char*& beginreading(const char*&) const - source parameters char*& iter endreading char* endreading() const - source ...

nsAdoptingCString
int32 ainteger print32 aradix void appendint(pruint32, print32) - source append the given unsigned integer to this string parameters pruint32 ainteger print32 aradix void appendint(print64, print32) - source parameters print64 ainteger print32 aradix appendfloat void appendfloat(float) - source append the given float to this string parameters float afloat void appendfloat(double) - source parameters double afloat beginreading char* beginreading() const - source reading iterators nsreadingiterator<char>& beginreading(nsreadingiterator<char>&) const - source deprecated reading iterators parameters nsreadingiterator<char>& iter char*& beginreading(const char*&) const - source parameters char*& iter endreading char* endreading() const - source ...

nsAdoptingString
int32 ainteger print32 aradix void appendint(pruint32, print32) - source append the given unsigned integer to this string parameters pruint32 ainteger print32 aradix void appendint(print64, print32) - source parameters print64 ainteger print32 aradix appendfloat void appendfloat(float) - source append the given float to this string parameters float afloat void appendfloat(double) - source parameters double afloat beginreading prunichar* beginreading() const - source reading iterators nsreadingiterator<short unsigned int>& beginreading(nsreadingiterator<short unsigned int>&) const - source deprecated reading iterators parameters nsreadingiterator<short unsigned int>& iter prunichar*& beginreading(const prunichar*&) const - source parameters prunicha...

nsAutoString
int32 ainteger print32 aradix void appendint(pruint32, print32) - source append the given unsigned integer to this string parameters pruint32 ainteger print32 aradix void appendint(print64, print32) - source parameters print64 ainteger print32 aradix appendfloat void appendfloat(float) - source append the given float to this string parameters float afloat void appendfloat(double) - source parameters double afloat beginreading prunichar* beginreading() const - source reading iterators nsreadingiterator<short unsigned int>& beginreading(nsreadingiterator<short unsigned int>&) const - source deprecated reading iterators parameters nsreadingiterator<short unsigned int>& iter prunichar*& beginreading(const prunichar*&) const - source parameters prunicha...

nsCAutoString
void appendint(pruint32, print32) - source append the given unsigned integer to this string parameters pruint32 ainteger print32 aradix void appendint(print64, print32) - source parameters print64 ainteger print32 aradix appendfloat void appendfloat(float) - source append the given float to this string parameters float afloat void appendfloat(double) - source parameters double afloat beginreading char* beginreading() const - source reading iterators nsreadingiterator<char>& beginreading(nsreadingiterator<char>&) const - source deprecated reading iterators parameters nsreadingiterator<char>& iter char*& beginreading(const char*&) const - source parameters char*& iter endreading char* ...

nsCString
int32 ainteger print32 aradix void appendint(pruint32, print32) - source append the given unsigned integer to this string parameters pruint32 ainteger print32 aradix void appendint(print64, print32) - source parameters print64 ainteger print32 aradix appendfloat void appendfloat(float) - source append the given float to this string parameters float afloat void appendfloat(double) - source parameters double afloat beginreading char* beginreading() const - source reading iterators nsreadingiterator<char>& beginreading(nsreadingiterator<char>&) const - source deprecated reading iterators parameters nsreadingiterator<char>& iter char*& beginreading(const char*&) const - source parameters char*& iter endreading char* endreading() const - source ...

nsDependentCString
int32 ainteger print32 aradix void appendint(pruint32, print32) - source append the given unsigned integer to this string parameters pruint32 ainteger print32 aradix void appendint(print64, print32) - source parameters print64 ainteger print32 aradix appendfloat void appendfloat(float) - source append the given float to this string parameters float afloat void appendfloat(double) - source parameters double afloat beginreading char* beginreading() const - source reading iterators nsreadingiterator<char>& beginreading(nsreadingiterator<char>&) const - source deprecated reading iterators parameters nsreadingiterator<char>& iter char*& beginreading(const char*&) const - source parameters char*& iter endreading char* endreading() const - source ...

nsDependentString
int32 ainteger print32 aradix void appendint(pruint32, print32) - source append the given unsigned integer to this string parameters pruint32 ainteger print32 aradix void appendint(print64, print32) - source parameters print64 ainteger print32 aradix appendfloat void appendfloat(float) - source append the given float to this string parameters float afloat void appendfloat(double) - source parameters double afloat beginreading prunichar* beginreading() const - source reading iterators nsreadingiterator<short unsigned int>& beginreading(nsreadingiterator<short unsigned int>&) const - source deprecated reading iterators parameters nsreadingiterator<short unsigned int>& iter prunichar*& beginreading(const prunichar*&) const - source parameters prunicha...

nsFixedCString
int32 ainteger print32 aradix void appendint(pruint32, print32) - source append the given unsigned integer to this string parameters pruint32 ainteger print32 aradix void appendint(print64, print32) - source parameters print64 ainteger print32 aradix appendfloat void appendfloat(float) - source append the given float to this string parameters float afloat void appendfloat(double) - source parameters double afloat beginreading char* beginreading() const - source reading iterators nsreadingiterator<char>& beginreading(nsreadingiterator<char>&) const - source deprecated reading iterators parameters nsreadingiterator<char>& iter char*& beginreading(const char*&) const - source parameters char*& iter endreading char* endreading() const - source ...

nsFixedString
int32 ainteger print32 aradix void appendint(pruint32, print32) - source append the given unsigned integer to this string parameters pruint32 ainteger print32 aradix void appendint(print64, print32) - source parameters print64 ainteger print32 aradix appendfloat void appendfloat(float) - source append the given float to this string parameters float afloat void appendfloat(double) - source parameters double afloat beginreading prunichar* beginreading() const - source reading iterators nsreadingiterator<short unsigned int>& beginreading(nsreadingiterator<short unsigned int>&) const - source deprecated reading iterators parameters nsreadingiterator<short unsigned int>& iter prunichar*& beginreading(const prunichar*&) const - source parameters prunicha...

nsPromiseFlatCString
int32 ainteger print32 aradix void appendint(pruint32, print32) - source append the given unsigned integer to this string parameters pruint32 ainteger print32 aradix void appendint(print64, print32) - source parameters print64 ainteger print32 aradix appendfloat void appendfloat(float) - source append the given float to this string parameters float afloat void appendfloat(double) - source parameters double afloat beginreading char* beginreading() const - source reading iterators nsreadingiterator<char>& beginreading(nsreadingiterator<char>&) const - source deprecated reading iterators parameters nsreadingiterator<char>& iter char*& beginreading(const char*&) const - source parameters char*& iter endreading char* endreading() const - source ...

nsPromiseFlatString
int32 ainteger print32 aradix void appendint(pruint32, print32) - source append the given unsigned integer to this string parameters pruint32 ainteger print32 aradix void appendint(print64, print32) - source parameters print64 ainteger print32 aradix appendfloat void appendfloat(float) - source append the given float to this string parameters float afloat void appendfloat(double) - source parameters double afloat beginreading prunichar* beginreading() const - source reading iterators nsreadingiterator<short unsigned int>& beginreading(nsreadingiterator<short unsigned int>&) const - source deprecated reading iterators parameters nsreadingiterator<short unsigned int>& iter prunichar*& beginreading(const prunichar*&) const - source parameters prunicha...

nsString
int32 ainteger print32 aradix void appendint(pruint32, print32) - source append the given unsigned integer to this string parameters pruint32 ainteger print32 aradix void appendint(print64, print32) - source parameters print64 ainteger print32 aradix appendfloat void appendfloat(float) - source append the given float to this string parameters float afloat void appendfloat(double) - source parameters double afloat beginreading prunichar* beginreading() const - source reading iterators nsreadingiterator<short unsigned int>& beginreading(nsreadingiterator<short unsigned int>&) const - source deprecated reading iterators parameters nsreadingiterator<short unsigned int>& iter prunichar*& beginreading(const prunichar*&) const - source parameters prunicha...

nsXPIDLCString
int32 ainteger print32 aradix void appendint(pruint32, print32) - source append the given unsigned integer to this string parameters pruint32 ainteger print32 aradix void appendint(print64, print32) - source parameters print64 ainteger print32 aradix appendfloat void appendfloat(float) - source append the given float to this string parameters float afloat void appendfloat(double) - source parameters double afloat beginreading char* beginreading() const - source reading iterators nsreadingiterator<char>& beginreading(nsreadingiterator<char>&) const - source deprecated reading iterators parameters nsreadingiterator<char>& iter char*& beginreading(const char*&) const - source parameters char*& iter endreading char* endreading() const - source ...

nsXPIDLString
int32 ainteger print32 aradix void appendint(pruint32, print32) - source append the given unsigned integer to this string parameters pruint32 ainteger print32 aradix void appendint(print64, print32) - source parameters print64 ainteger print32 aradix appendfloat void appendfloat(float) - source append the given float to this string parameters float afloat void appendfloat(double) - source parameters double afloat beginreading prunichar* beginreading() const - source reading iterators nsreadingiterator<short unsigned int>& beginreading(nsreadingiterator<short unsigned int>&) const - source deprecated reading iterators parameters nsreadingiterator<short unsigned int>& iter prunichar*& beginreading(const prunichar*&) const - source parameters prunicha...

XPCOM glue classes
this class is typically used to represent ascii or utf-8 character arrays.nsacstring (external)class declarationnsacstring_internalclass declarationnsadoptingcstringclass declarationnsadoptingstringclass declarationnsastringthe nsastring abstract class represents a character string composed of double-byte storage units.

IAccessibleValue
typical types are long and double.

mozIStorageAggregateFunction
data(mnumbers); for (pruint32 i = 0; i < data.length(); i++) { print32 value = data[i] - mean; data[i] = value * value; } total = 0; for (pruint32 i = 0; i < data.length(); i++) total += data[i]; nscomptr<nsiwritablevariant> result = do_createinstance("@mozilla.org/variant;1"); ns_ensure_true(result, ns_error_out_of_memory); rv = result->setasdouble(sqrt(double(total) / double(data.length()))); ns_ensure_success(rv, rv); ns_addref(*_result = result); return ns_ok; } private: nstarray<print32> mnumbers; }; // now, register our function with the database connection.

nsIAccelerometerUpdate
method overview void accelerationchanged(in double x, in double y, in double z); methods accelerationchanged() void accelerationchanged( in double x, in double y, in double z ); parameters x y z the coordinates of the nsiacceleration data.

nsIDOMXPathResult
numbervalue double if resulttype is number_type, the numeric value of the xpath value.

nsIDownload
speed double the downloads transfer speed in bytes per second.

data
this content is now available at nsisupportsdouble.attributes.

toString
this content is now available at nsisupportsdouble.tostring().

nsITelemetry
ring name); jsval snapshotcapturedstacks([optional] in boolean clear); nsisupports getloadedmodules(); jsval snapshotkeyedhistograms(in uint32_t adataset, in boolean asubsession, in boolean aclear); void sethistogramrecordingenabled(in acstring id, in boolean enabled); void asyncfetchtelemetrydata(in nsifetchtelemetrydatacallback acallback); double mssinceprocessstart(); void scalaradd(in acstring aname, in jsval avalue); void scalarset(in acstring aname, in jsval avalue); void scalarsetmaximum(in acstring aname, in jsval avalue); jsval snapshotscalars(in uint32_t adataset, [optional] in boolean aclear); void keyedscalaradd(in acstring aname, in astring akey, in jsval avalue); void keyed...

XPCOM Interface Reference
msservicensisocketprovidernsisocketproviderservicensisockettransportnsisockettransportservicensisoundnsispeculativeconnectnsistackframensistandardurlnsistreamconverternsistreamlistenernsistringbundlensistringbundleoverridensistringbundleservicensistringenumeratornsistructuredclonecontainernsistylesheetservicensisupportsnsisupports proxiesnsisupportsarraynsisupportscstringnsisupportscharnsisupportsdoublensisupportsfloatnsisupportsidnsisupportsinterfacepointernsisupportsprboolnsisupportsprint16nsisupportsprint32nsisupportsprint64nsisupportsprtimensisupportspruint8nsisupportspruint16nsisupportspruint32nsisupportspruint64nsisupportsprimitivensisupportsprioritynsisupportsstringnsisupportsvoidnsisupportsweakreferencensisyncjpakensisyncmessagesendernsitxttohtmlconvnsitaggingservicensitaskbarpreviewnsit...

XPCOM primitive
pports-print64;1 [scriptable, uuid(e3cb0ff0-4a1c-11d3-9890-006008962422)] interface nsisupportsprint64 : nsisupportsprimitive { attribute print64 data; string tostring(); }; float nsisupportsfloat @mozilla.org/supports-float;1 [scriptable, uuid(abeaa390-4ac0-11d3-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...

XPCOM Interface Reference by grouping
nsifeedresult nsifeedresultlistener nsifeedtextconstruct script mozijssubscriptloader storage mozistoragevacuumparticipant util nsieffectivetldservice worker nsiabstractworker data nsiarray nsicategorymanager nsicollection nsidictionary nsimutablearray nsisimpleenumerator nsisupportschar nsisupportsdouble nsisupportsfloat nsisupportsid nsisupportsinterfacepointer nsisupportsprbool nsisupportsprimitive nsisupportsprint16 nsisupportsprint32 nsisupportsprint64 nsisupportspriority nsisupportsprtime nsisupportspruint16 nsisupportspruint32 nsisupportspruint64 nsisupportspruint8 nsisupportsstring nsisupportsvoid nsisupportsweakreference ...

Troubleshooting XPCOM components registration
double check your guids in your install.rdf with your sourcecode, and then check them again.

XPIDL
the following is the correspondence table: table 1: standard idl types idl c++ in parameter c++ out parameter js type notes boolean bool bool* boolean char char char* string only chars in range \u0000-\u00ff permitted double double double* number float float float* number long int32_t int32_t* number long long int64_t int64_t* number octet uint8_t uint8_t* number short int16_t int16_t* number string const char* char** string only chars in range \u0000-\u00ff permitted ...

Mail and RDF
an aside: rational behind the design after reviewing this design, it might seem unnecessary to have the double-levels of notification/registration.

The libmime module
--- mimemultipart (abstract) | | | | | |--- mimemultipartmixed | | | | | |--- mimemultipartdigest | | | | | |--- mimemultipartparallel | | | | | |--- mimemultipartalternative | | | | | |--- mimemultipartrelated | | | | | |--- mimemultipartappledouble | | | | | |--- mimesunattachment | | | | | |--- mimemultipartsigned (abstract) | | | |--- mimemessage | | | |--- mimeuntypedtext | |--- mimeleaf (abstract) | | | |--- mimeinlinetext (abstract) | | | | | |--- mimeinlinetextplain | | | | ...

Thunderbird Configuration Files
double-click on a preference to change its value.

Adding items to the Folder Pane
level (attribute) the level in the tree to display the item at open (rw, attribute) whether or not this container is open children (attribute) an array of child items also conforming to this spec getproperties (function) a call from getrowproperties or getcellproperties for this item will be passed into this function command (function) this function will be called when the item is double-clicked for our example extension, two different types of folder-tree-items will be defined.

Use SQLite
to double check the information you've inserted you can query the tbird.sqlite file using regular sqlite programs.

Theme Packaging
preview.png is a preview image which will show when double-clicked on a theme in the appearance section of the add-ons manager.

Declaring and Calling Functions
returned values if the return type can fit into a javascript number without loss (that is, it's a number 32 bits or smaller, or is a double or float), then the function just return a javascript number.

Using js-ctypes
cu.import('resource://gre/modules/ctypes.jsm'); var libcf = ctypes.open('/system/library/frameworks/corefoundation.framework/corefoundation'); // define types var cfindex = ctypes.long; var cfoptionflags = ctypes.unsigned_long; var cftimeinterval = ctypes.double; var cftyperef = ctypes.voidptr_t; var sint32 = ctypes.long; var void = ctypes.void_t; var __cfstring = new ctypes.structtype("__cfstring"); var cfstringref = __cfstring.ptr; var __cfurl = new ctypes.structtype("__cfurl"); var cfurlref = __cfurl.ptr; var __cfallocator = new ctypes.structtype("__cfallocator"); var cfallocatorref = __cfallocator.ptr; var unichar = ctypes.jschar; // uint16 wit...

ctypes
double a double-precision floating point value that behaves like the double type on the platform.

Pretty-print a minified file - Firefox Developer Tools
note: if you want to prettify some inline javascript code, just double click the code in the inspector pane.

Migrating from Firebug - Firefox Developer Tools
inside the storage inspector you just have to double-click the data you want to edit.

Network request list - Firefox Developer Tools
starting in firefox 76 you can double-click a column divider to resize the column to the left of it to fit its contents.

Examine and edit HTML - Firefox Developer Tools
editing html you can edit the html — tags, attributes, and content — directly in the html pane: double-click the text you want to edit, change it, and press enter to see the changes reflected immediately.

Cookies - Firefox Developer Tools
you can edit cookies by double-clicking inside cells in the table widget and editing the values they contain, and add new cookies by clicking the "plus" (+) button and then editing the resulting new row to the value you want.

Local Storage / Session Storage - Firefox Developer Tools
you can edit local and session storage items by double-clicking inside cells in the table widget and editing the values they contain: you can delete local storage and session storage entries using the context menu: you can also delete local and session storage entries by selecting an item and pressing the delete or backspace key.

Web Console UI Tour - Firefox Developer Tools
command line the command line starts with double angle brackets (>>).

Accelerometer.x - Web APIs
the x read-only property of the accelerometer interface returns a double precision integer containing the acceleration of the device along the its x axis.

Accelerometer.y - Web APIs
the y read-only property of the accelerometer interface returns a double precision integer containing the acceleration of the device along the its y axis.

Accelerometer.z - Web APIs
the z read-only property of the accelerometer interface returns a double precision integer containing the acceleration of the device along the its z axis.

Animation.playbackRate - Web APIs
the value is a scaling factor, so for example a value of 2 would double the playback rate.

Animation.startTime - Web APIs
the animation.starttime property of the animation interface is a double-precision floating-point value which indicates the scheduled time when an animation's playback should begin.

AudioBuffer - Web APIs
audiobuffer.duration read only returns a double representing the duration, in seconds, of the pcm data stored in the buffer.

AudioBufferSourceNode.playbackRate - Web APIs
a playbackrate of 2.0 doubles the audio's playback rate to 88,200 hz.

AudioContext() - Web APIs
available properties are as follows: latencyhint optional the type of playback that the context will be used for, as a value from the audiocontextlatencycategory enum or a double-precision floating-point value indicating the preferred maximum latency of the context in seconds.

AudioContext.outputLatency - Web APIs
syntax var outputlatency = audioctx.outputlatency; value a double representing the output latency in seconds.

AudioContextOptions - Web APIs
properties latencyhint optional the type of playback that the context will be used for, as a value from the audiocontextlatencycategory enum or a double-precision floating-point value indicating the preferred maximum latency of the context in seconds.

AudioParam.cancelAndHoldAtTime() - Web APIs
syntax var audioparam = audioparam.cancelandholdattime(canceltime) parameters canceltime a double representing the time (in seconds) after the audiocontext was first created after which all scheduled changes will be cancelled.

AudioParam.cancelScheduledValues() - Web APIs
syntax var audioparam = audioparam.cancelscheduledvalues(starttime) parameters starttime a double representing the time (in seconds) after the audiocontext was first created after which all scheduled changes will be cancelled.

AudioParam.exponentialRampToValueAtTime() - Web APIs
endtime a double representing the exact time (in seconds) after the ramping starts that the changing of the value will stop.

AudioParam.linearRampToValueAtTime() - Web APIs
endtime a double representing the exact time (in seconds) after the ramping starts that the changing of the value will stop.

AudioParam.setValueAtTime() - Web APIs
starttime a double representing the time (in seconds) after the audiocontext was first created that the change in value will happen.

AudioParam.value - Web APIs
usage notes value precision and variation the data type used internally to store value is a single-precision (32-bit) floating point number, while javascript uses 64-bit double-precision floating point numbers.

AudioProcessingEvent - Web APIs
playbacktime read only double the time when the audio will be played, as defined by the time of audiocontext.currenttime inputbuffer read only audiobuffer the buffer containing the input audio data to be processed.

AudioWorkletGlobalScope - Web APIs
currenttime read only returns a double that represents the ever-increasing context time of the audio block being processed.

BaseAudioContext.currentTime - Web APIs
the currenttime read-only property of the baseaudiocontext interface returns a double representing an ever-increasing hardware timestamp in seconds that can be used for scheduling audio playback, visualizing timelines, etc.

BaseAudioContext - Web APIs
baseaudiocontext.currenttime read only returns a double representing an ever-increasing hardware time in seconds used for scheduling.

BiquadFilterNode.Q - Web APIs
the q property of the biquadfilternode interface is an a-rate audioparam, a double representing a q factor, or quality factor.

BiquadFilterNode.frequency - Web APIs
the frequency property of the biquadfilternode interface is a k-rate audioparam, a double representing a frequency in the current filtering algorithm measured in hertz (hz).

BiquadFilterNode.gain - Web APIs
the gain property of the biquadfilternode interface is a a-rate audioparam, a double representing the gain used in the current filtering algorithm.

BudgetService - Web APIs
methods budgetservice.getcost() returns a promise that resolves to a double, indicating the worst-case background operation cost of the provided background operation.

BudgetState.budgetAt - Web APIs
syntax var budget = budgetstate.budgetat value a double.

CSSMathProduct.CSSMathProduct() - Web APIs
the cssmathproduct() constructor creates a new cssmathproduct object which creates a new cssmathproduct object which syntax var cssmathproduct = new cssmathproduct() parameters arg a value for the cssmathproduct object to be constructed either a double integer or a cssnumericvalue.

CSSMathSum.CSSMathSum() - Web APIs
syntax var cssmathsum = new cssmathsum() parameters values one or more double integers or cssnumericvalue objects.

CSSNumericValue.add() - Web APIs
syntax var cssmathsum = cssnumericvalue.add(double | cssnumericvalue); parameters number either a number or a cssnumericvalue.

CSSUnitValue.CSSUnitValue() - Web APIs
syntax var cssunitvalue = new cssunitvalue() parameters value returns a double indicating the number of units.

CSSUnitValue - Web APIs
properties cssunitvalue.value returns a double indicating the number of units.

DOMPoint.w - Web APIs
syntax var perspective = dompoint.w; value a double-precision floating-point value indicating the w perspective value for the point.

DOMPoint.x - Web APIs
syntax var xpos = dompoint.x; value a double-precision floating-point value indicating the x coordinate's value for the point.

DOMPoint.y - Web APIs
syntax var ypos = dompoint.y; value a double-precision floating-point value indicating the y coordinate's value for the point.

DOMPoint.z - Web APIs
syntax var zpos = dompoint.z; value a double-precision floating-point value indicating the z coordinate's value for the point.

DOMPointInit.w - Web APIs
syntax var dompointinit = { w: wperspective }; dompointinit.w = wperspective; var wperspective = dompointinit.w; value a double-precision floating-point value indicating the point's w perspective value.

DOMPointInit.x - Web APIs
syntax var dompointinit = { x: xpos }; dompointinit.x = xpos; var xpos = dompointinit.x; value a double-precision floating-point value indicating the point's x coordinate.

DOMPointInit.y - Web APIs
syntax var dompointinit = { y: ypos }; dompointinit.y = ypos; var ypos = dompointinit.y; value a double-precision floating-point value indicating the point's y-coordinate.

DOMPointInit.z - Web APIs
syntax var dompointinit = { z: zpos }; dompointinit.z = zpos; var zpos = dompointinit.z; value a double-precision floating-point value indicating the point's z-coordinate.

DOMPointReadOnly.w - Web APIs
syntax const perspective = somedompointreadonly.w value a double-precision floating-point value indicating the w perspective value for the point.

DOMPointReadOnly.x - Web APIs
syntax const xpos = somedompointreadonly.x; value a double-precision floating-point value indicating the x coordinate's value for the point.

DOMPointReadOnly.y - Web APIs
syntax const ypos = somedompointreadonly.y; value a double-precision floating-point value indicating the y coordinate's value for the point.

DOMPointReadOnly.z - Web APIs
syntax const zpos = somedompointreadonly.z; value a double-precision floating-point value indicating the z coordinate's value for the point.

DOMRectReadOnly.bottom - Web APIs
(has the same value as y + height, or y if height is negative.) syntax var recbottom = domrect.bottom; value a double.

DOMRectReadOnly.height - Web APIs
syntax var recheight = domrect.height; value a double.

DOMRectReadOnly.left - Web APIs
(has the same value as x, or x + width if width is negative.) syntax var recleft = domrect.left; value a double.

DOMRectReadOnly.right - Web APIs
(has the same value as x + width, or x if width is negative.) syntax var recright = domrect.right; value a double.

DOMRectReadOnly.top - Web APIs
(has the same value as y, or y + height if height is negative.) syntax var rectop = domrect.top; value a double.

DOMRectReadOnly.width - Web APIs
syntax var recwidth = domrect.width; value a double.

DOMRectReadOnly.x - Web APIs
syntax var recx = domrect.x; value a double.

DOMRectReadOnly.y - Web APIs
syntax var recy = domrect.y; value a double.

DeviceMotionEventAcceleration: x - Web APIs
syntax var xaccel = devicemotioneventacceleration.x; return value x a double indicating the amount of acceleration along the x axis.

DeviceMotionEventAcceleration: y - Web APIs
syntax var yaccel = devicemotioneventacceleration.y; return value y a double indicating the amount of acceleration along the y axis.

DeviceMotionEventAcceleration: z - Web APIs
syntax var zaccel = devicemotioneventacceleration.z; return value z a double indicating the amount of acceleration along the z axis.

DeviceMotionEventRotationRate: alpha - Web APIs
return value alpha a double indicating the rate of rotation around the z axis, in degrees per second.

DeviceMotionEventRotationRate: beta - Web APIs
return value beta a double indicating the rate of rotation around the x axis, in degrees per second.

DeviceMotionEventRotationRate: gamma - Web APIs
return value gamma a double indicating the rate of rotation around the y axis, in degrees per second.

DocumentFragment.querySelector() - Web APIs
to match id or selectors that do not follow the css syntax (by using semicolon or space inappropriately for example), it's mandatory to escape the wrong character with a double back slash: <div id="foo\bar"></div> <div id="foo:bar"></div> <script> document.queryselector('#foo\bar') // does not match anything document.queryselector('#foo\\\\bar') // match the first div document.queryselector('#foo:bar') // does not match anything document.queryselector('#foo\\:bar') // match the second div </script> specifications specification status comment...

Element: click event - Web APIs
in other words, detail will be 2 for a double-click, 3 for triple-click, and so forth.

FileSystemEntry.moveTo() - Web APIs
specifying a new name lets moveto() double as a rename operation.

Gamepad.buttons - Web APIs
syntax readonly attribute gamepadbutton[] buttons; example the following code is taken from my gamepad api button demo (you can view the demo live, and find the source code on github.) note the code fork — in chrome navigator.getgamepads needs a webkit prefix and the button values are stores as an array of double values, whereas in firefox navigator.getgamepads doesn't need a prefix, and the button values are stored as an array of gamepadbutton objects; it is the gamepadbutton.value or gamepadbutton.pressed properties of these we need to access, depending on what type of buttons they are.

Using the Gamepad API - Web APIs
in current versions of chrome (version 34 as of this writing) the button values are stored as an array of double values, instead of gamepadbutton objects.

GeolocationCoordinates.longitude - Web APIs
the geolocationcoordinates interface's read-only longitude property is a double-precision floating point value which represents the longitude of a geographical position, specified in decimal degrees.

Gyroscope.x - Web APIs
the x read-only property of the gyroscope interface returns a double precision integer containing the angular velocity of the device along the its x axis.

Gyroscope.y - Web APIs
the y read-only property of the gyroscope interface returns a double precision integer containing the angular velocity of the device along the its y axis.

Gyroscope.z - Web APIs
the z read-only property of the gyroscope interface returns a double precision integer containing the angular velocity of the device along the its z axis.

HTMLCanvasElement.captureStream() - Web APIs
syntax mediastream = canvas.capturestream(framerate); parameters framerate optional a double-precision floating-point value that indicates the rate of capture of each frame.

HTMLInputElement - Web APIs
valueasnumber double: returns the value of the element, interpreted as one of the following, in order: a time value a number nan if conversion is impossible autocapitalize string: defines the capitalization behavior for user input.

HTMLMediaElement.currentTime - Web APIs
syntax var currenttime = htmlmediaelement.currenttime; htmlmediaelement.currenttime = 35; value a double-precision floating-point value indicating the current playback time in seconds.

HTMLMediaElement.defaultPlaybackRate - Web APIs
syntax var dspeed = video.defaultplaybackrate; audio.defaultplaybackrate = 1.0; value a double.

HTMLMediaElement.duration - Web APIs
syntax myduration = htmlmediaelement.duration value a double-precision floating-point value indicating the duration of the media in seconds.

HTMLMediaElement.fastSeek() - Web APIs
syntax htmlmediaelement.fastseek(time); parameters time a double.

HTMLMediaElement.initialTime - Web APIs
value a double.

HTMLMediaElement.playbackRate - Web APIs
syntax // video video.playbackrate = 1.5; // audio audio.playbackrate = 1.0; value a double.

HTMLMediaElement.volume - Web APIs
syntax var volume ​= video.volume; //1 value a double values must fall between 0 and 1, where 0 is effectively muted and 1 is the loudest possible value.

HTMLSelectElement.selectedOptions - Web APIs
html the html that creates the selection box and the <option> elements representing each of the food choices looks like this: <label for="foods">what do you want to eat?</label><br> <select id="foods" name="foods" size="7" multiple> <option value="1">burrito</option> <option value="2">cheeseburger</option> <option value="3">double bacon burger supreme</option> <option value="4">pepperoni pizza</option> <option value="5">taco</option> </select> <br> <button name="order" id="order"> order now </button> <p id="output"> </p> the <select> element is set to allow multiple items to be selected, and it is 7 rows tall.

HTMLVideoElement - Web APIs
htmlvideoelement.mozframedelay read only returns an double with the time which the last painted video frame was late by, in seconds.

KeyboardEvent.keyCode - Web APIs
} if (handled) { // suppress "double action" if event handled event.preventdefault(); } }, true); specifications specification status comment document object model (dom) level 3 events specificationthe definition of 'keyboardevent.keycode' in that specification.

LinearAccelerationSensor.x - Web APIs
the x read-only property of the linearaccelerationsensor interface returns a double precision integer containing the linear acceleration of the device along the device's x axis.

LinearAccelerationSensor.y - Web APIs
the y read-only property of the linearaccelerationsensor interface returns a double precision integer containing the acceleration of the device along the device's y axis.

LinearAccelerationSensor.z - Web APIs
the z read-only property of the linearaccelerationsensor interface returns a double precision integer containing the acceleration of the device along the device's z axis.

Magnetometer.x - Web APIs
the x read-only property of the magnetometer interface returns a double precision integer containing the magnetic field around the device's x axis.

Magnetometer.y - Web APIs
the y read-only property of the magnetometer interface returns a double precision integer containing the magnetic field around the device's y axis.

Magnetometer.z - Web APIs
the z read-only property of the magnetometer interface returns a double-precision integer containing the magnetic field around the device's z axis.

MediaPositionState.playbackRate - Web APIs
example in this example, an app is updating the browser to let it know that the user has clicked a button causing the playback to shift to a double-speed mode.

MediaSettingsRange.max - Web APIs
syntax var max = mediasettingsrange.max value a double integer.

MediaSettingsRange.min - Web APIs
syntax var min = mediasettingsrange.min value a double integer.

MediaSettingsRange.step - Web APIs
syntax var step = mediasettingsrange.step value a double integer.

MediaSource.duration - Web APIs
syntax mediasource.duration = 5.5; // 5.5 seconds var myduration = mediasource.duration; value a double.

MouseEvent() - Web APIs
working draft redefines screen and client fields long to double.

MouseEvent.offsetX - Web APIs
syntax var xoffset = instanceofmouseevent.offsetx; return value a double floating point value.

MouseEvent.offsetY - Web APIs
syntax var yoffset = instanceofmouseevent.offsety; return value a double floating point value.

NetworkInformation.downlink - Web APIs
syntax var downlink = networkinformation.downlink value a double.

NetworkInformation.downlinkMax - Web APIs
syntax var max = networkinformation.downlinkmax return value an unrestricted double representing the maximum downlink speed, in megabits per second (mb/s), for the underlying connection technology.

OfflineAudioContext.suspend() - Web APIs
}); parameters suspendtime a double specifying the suspend time, in seconds.

OscillatorNode.start() - Web APIs
syntax oscillator.start(when); // start playing oscillator at the point in time specified by when parameters when optional an optional double representing the time (in seconds) when the oscillator should start, in the same coordinate system as audiocontext's currenttime attribute.

OscillatorNode.stop() - Web APIs
syntax oscillator.stop(when); // stop playing oscillator at when parameters when optional an optional double representing the audio context time when the oscillator should stop.

Paint​Worklet​.device​Pixel​Ratio - Web APIs
syntax var devicepixelratio = paintworklet.devicepixelratio; value a double-precision integer.

PaintWorklet.devicePixelRatio - Web APIs
syntax var devicepixelratio = paintworklet.devicepixelratio; value a double-precision integer.

PaintWorklet.devicePixelRatio - Web APIs
syntax var devicepixelratio = paintworklet.devicepixelratio; value a double-precision integer.

PannerNode.refDistance - Web APIs
the refdistance property of the pannernode interface is a double value representing the reference distance for reducing volume as the audio source moves further from the listener – i.e.

PannerNode.rolloffFactor - Web APIs
the rollofffactor property of the pannernode interface is a double value describing how quickly the volume is reduced as the source moves away from the listener.

PerformanceServerTiming.duration - Web APIs
the duration read-only property returns a double that contains the server-specified metric duration, or value 0.0.

PerformanceServerTiming - Web APIs
performanceservertiming.durationread only a double that contains the server-specified metric duration, or value 0.0.

Using the Performance API - Web APIs
the domhighrestimestamp type (a double) is used by all performance interfaces to hold such time values.

Performance API - Web APIs
this type is a double and is used by the performance interfaces.

RTCRtpContributingSource.audioLevel - Web APIs
syntax var audiolevel = rtcrtpcontributingsource.audiolevel value a double-precision floating-point number which indicates the volume level of the audio in the most recently received rtp packet from the source described by the rtcrtpcontributingsource.

RTCRtpContributingSource - Web APIs
properties audiolevel optional a double-precision floating-point value between 0 and 1 specifying the audio level contained in the last rtp packet played from this source.

RTCRtpEncodingParameters.scaleResolutionDownBy - Web APIs
syntax rtpencodingparameters.scaleresolutiondownby = scalingfactor; rtpencodingparameters = { scaleresolutiondownby: scalingfactor }; value a double-precison floating-point number specifying the amount by which to reduce the size of the video during encoding.

Resource Timing API - Web APIs
this type is a double and its value is a discrete point in time or the difference in time between two discrete points in time.

Screen - Web APIs
a double between 0 and 1.0 is expected.

ScrollToOptions.left - Web APIs
syntax left: double value a double.

ScrollToOptions.top - Web APIs
syntax top: double value a double.

SourceBuffer.appendWindowEnd - Web APIs
syntax var myappendwindowend = sourcebuffer.appendwindowend; sourcebuffer.appendwindowend = 120.0; value a double, indicating the end time of the append window, in seconds.

SourceBuffer.appendWindowStart - Web APIs
syntax var myappendwindowstart = sourcebuffer.appendwindowstart; sourcebuffer.appendwindowstart = 2.0; value a double, indicating the start time of the append window, in seconds.

SourceBuffer.timestampOffset - Web APIs
syntax var myoffset = sourcebuffer.timestampoffset; sourcebuffer.timestampoffset = 2.5; value a double, with the offset amount expressed in seconds.

TextMetrics.actualBoundingBoxAscent - Web APIs
the read-only actualboundingboxascent property of the textmetrics interface is a double giving the distance from the horizontal line indicated by the canvasrenderingcontext2d.textbaseline attribute to the top of the bounding rectangle used to render the text, in css pixels.

TextMetrics.actualBoundingBoxDescent - Web APIs
the read-only actualboundingboxdescent property of the textmetrics interface is a double giving the distance from the horizontal line indicated by the canvasrenderingcontext2d.textbaseline attribute to the bottom of the bounding rectangle used to render the text, in css pixels.

TextMetrics.actualBoundingBoxLeft - Web APIs
the read-only actualboundingboxleft property of the textmetrics interface is a double giving the distance parallel to the baseline from the alignment point given by the canvasrenderingcontext2d.textalign property to the left side of the bounding rectangle of the given text, in css pixels.

TextMetrics.actualBoundingBoxRight - Web APIs
the read-only actualboundingboxright property of the textmetrics interface is a double giving the distance parallel to the baseline from the alignment point given by the canvasrenderingcontext2d.textalign property to the right side of the bounding rectangle of the given text, in css pixels.

TextMetrics.alphabeticBaseline - Web APIs
the read-only alphabeticbaseline property of the textmetrics interface is a double giving the distance from the horizontal line indicated by the canvasrenderingcontext2d.textbaseline property to the alphabetic baseline of the line box, in css pixels.

TextMetrics.emHeightAscent - Web APIs
the read-only emheightascent property of the textmetrics interface is a double giving the distance from the horizontal line indicated by the canvasrenderingcontext2d.textbaseline property to the top of the em square in the line box, in css pixels.

TextMetrics.emHeightDescent - Web APIs
the read-only emheightdescent property of the textmetrics interface is a double giving the distance from the horizontal line indicated by the canvasrenderingcontext2d.textbaseline property to the bottom of the em square in the line box, in css pixels.

TextMetrics.fontBoundingBoxAscent - Web APIs
the read-only fontboundingboxascent property of the textmetrics interface is a double giving the distance from the horizontal line indicated by the canvasrenderingcontext2d.textbaseline attribute to the top of the highest bounding rectangle of all the fonts used to render the text, in css pixels.

TextMetrics.fontBoundingBoxDescent - Web APIs
the read-only fontboundingboxdescent property of the textmetrics interface is a double giving the distance from the horizontal line indicated by the canvasrenderingcontext2d.textbaseline attribute to the bottom of the bounding rectangle of all the fonts used to render the text, in css pixels.

TextMetrics.hangingBaseline - Web APIs
the read-only hangingbaseline property of the textmetrics interface is a double giving the distance from the horizontal line indicated by the canvasrenderingcontext2d.textbaseline property to the hanging baseline of the line box, in css pixels.

TextMetrics.ideographicBaseline - Web APIs
the read-only ideographicbaseline property of the textmetrics interface is a double giving the distance from the horizontal line indicated by the canvasrenderingcontext2d.textbaseline property to the ideographic baseline of the line box, in css pixels.

Using Touch Events - Web APIs
another potential factor is time; for example, the time elapsed between the touch's start and the touch's end, or the time lapse between two consecutive taps intended to create a double-tap gesture.

VTTCue - Web APIs
vttcue.size returns a double representing the size of the cue, as a percentage of the video size.

VideoPlaybackQuality.totalFrameDelay - Web APIs
the videoplaybackquality.totalframedelay read-only property returns a double containing the sum of the frame delay since the creation of the associated htmlvideoelement.

VideoPlaybackQuality - Web APIs
totalframedelay read only a double containing the sum of the frame delay since the creation of the associated htmlvideoelement.

VisualViewport.height - Web APIs
syntax var height = visualviewport.height value a double.

VisualViewport.offsetTop - Web APIs
syntax var offsettop = visualviewport.offsettop value a double.

VisualViewport.offsetleft - Web APIs
syntax var offsetleft = visualviewport.offsetleft value a double.

VisualViewport.pageLeft - Web APIs
syntax var pageleft = visualviewport.pageleft value a double.

VisualViewport.pageTop - Web APIs
syntax var pagetop = visualviewport.pagetop value a double.

VisualViewport.scale - Web APIs
syntax var scale = visualviewport.scale value a double.

VisualViewport.width - Web APIs
syntax var width = visualviewport.width value a double.

WaveShaperNode.oversample - Web APIs
'2x' double the amount of samples before applying the shaping curve.

Fundamentals of WebXR - Web APIs
why is the fov wider with two eyes, but not double the single-eye fov?

Geometry and reference spaces in WebXR - Web APIs
all times and durations in webxr are measured using the domhighrestimestamp type, which is a double-precision floating-point value specifying the time in milliseconds relative to the starting time.

Using the Web Audio API - Web APIs
here we'll allow the boombox to move the gain up to 2 (double the original volume) and down to 0 (this will effectively mute our sound).

WheelEvent.deltaX - Web APIs
the wheelevent.deltax read-only property is a double representing the horizontal scroll amount in the wheelevent.deltamode unit.

WheelEvent.deltaY - Web APIs
the wheelevent.deltay read-only property is a double representing the vertical scroll amount in the wheelevent.deltamode unit.

WheelEvent.deltaZ - Web APIs
the wheelevent.deltaz read-only property is a double representing the scroll amount along the z-axis, in the wheelevent.deltamode unit.

Window.scrollX - Web APIs
syntax var x = window.scrollx; value in practice, the returned value is a double-precision floating-point value indicating the number of pixels the document is currently scrolled horizontally from the origin, where a positive value means the content is scrolled to the left.

Window.scrollY - Web APIs
syntax var y = window.scrolly value in practice, the returned value is a double-precision floating-point value indicating the number of pixels the document is currently scrolled vertically from the origin, where a positive value means the content is scrolled to upward.

Window - Web APIs
globaleventhandlers.onclick called after the any mouse button is pressed & released globaleventhandlers.ondblclick called when a double click is made with any mouse button.

XRRenderState.inlineVerticalFieldOfView - Web APIs
syntax var adouble = xrrenderstate.inlineverticalfieldofview; value a number.

XRRenderState.depthFar - Web APIs
syntax var adouble = xrrenderstate.depthfar; value a number.

XRRenderState.depthNear - Web APIs
syntax var adouble = xrrenderstate.depthnear; value a number.

XRWebGLLayerInit.framebufferScaleFactor - Web APIs
a value of 2.0, on the other hand, creates a frame buffer whose resolution is double that of the actual display buffer.

ARIA live regions - Accessibility
however, adding both aria-live and role="alert" causes double speaking issues in voiceover on ios.

ARIA Test Cases - Accessibility
n/a n/a jaws 10 - - - - voiceover (leopard) n/a n/a - fail window-eyes - - - - nvda - n/a - - zoom (leopard) pass n/a pass pass zoomtext - - - - orca - - - - multi-thumb slider multi-thumb slider example using inline images for thumbs tpg double slider expected at behavior: jaws - on focus jaws announces the role and focus slider position.

Architecture - Accessibility
to doublecheck, hit the delete key and see if it removes the first char of the next line.

system - CSS: Cascading Style Sheets
on each successive pass through the cycle, the symbols used for the counter representation are doubled, tripled, and so on.

@document - CSS: Cascading Style Sheets
the values provided to the url(), url-prefix(), domain(), and media-document() functions can be optionally enclosed by single or double quotes.

Attribute selectors - CSS: Cascading Style Sheets
*/ /* note: you could also use hyphenated attributes without double quotes */ div[data-lang="zh-tw"] { color: purple; } html <div lang="en-us en-gb en-au en-nz">hello world!</div> <div lang="pt">olá mundo!</div> <div lang="zh-cn">世界您好！</div> <div lang="zh-tw">世界您好！</div> <div data-lang="zh-tw">世界您好！</div> result html ordered lists the html specification requires the type attribute to be matched case-insensitively due to i...

Box alignment in grid layout - CSS: Cascading Style Sheets
you could double up the properties and use both as you would for vendor prefixes.

CSS Box Alignment - CSS: Cascading Style Sheets
grid-row-gap grid-column-gap grid-gap the prefixed versions will be maintained as an alias of the unprefixed ones, however you can always double up in the way that you would with vendor prefixes, adding the grid-gap property and then the gap property with the same values.

Color picker tool - CSS: Cascading Style Sheets
x dashed rgb(221, 221, 221); border-radius: 15px; position: absolute; top: 50px; left: 20%; } #canvas[data-tutorial='drop']:after { content: "adjust, change or modify"; width: 40%; font-size: 24px; position: absolute; top: 130px; left: 32%; z-index: 2; } #canvas [data-tutorial='dblclick'] { background-color: #999 !important; } #canvas [data-tutorial='dblclick']:before { content: "double click to activate"; width: 80px; color: #fff; position: absolute; top: 10%; left: 20%; z-index: 2; } #canvas .sample { width: 100px; height: 100px; min-width: 20px; min-height: 20px; position: absolute; border: 1px solid rgba(255, 255, 255, 0.3); } #canvas .sample:hover { cursor: move; } #canvas .sample[data-active='true']:after { content: ""; position: absolute; background: ur...

CSS selectors - CSS: Cascading Style Sheets
made pseudo-elements use a :: double-colon prefix.

CSS values and units - CSS: Cascading Style Sheets
a <string> must be quoted with either single or double quotes.

Pseudo-elements - CSS: Cascading Style Sheets
note: as a rule, double colons (::) should be used instead of a single colon (:).

Using CSS custom properties (variables) - CSS: Cascading Style Sheets
basic usage declaring a custom property is done using a custom property name that begins with a double hyphen (--), and a property value that can be any valid css value.

background-clip - CSS: Cascading Style Sheets
content-box examples html <p class="border-box">the background extends behind the border.</p> <p class="padding-box">the background extends to the inside edge of the border.</p> <p class="content-box">the background extends only to the edge of the content box.</p> <p class="text">the background is clipped to the foreground text.</p> css p { border: .8em darkviolet; border-style: dotted double; margin: 1em 0; padding: 1.4em; background: linear-gradient(60deg, red, yellow, red, yellow, red); font: 900 1.2em sans-serif; text-decoration: underline; } .border-box { background-clip: border-box; } .padding-box { background-clip: padding-box; } .content-box { background-clip: content-box; } .text { background-clip: text; -webkit-background-clip: text; color: rgba(0,0,0,.2); ...

background-origin - CSS: Cascading Style Sheets
it also applies to ::first-letter and ::first-line.inheritednocomputed valueas specifiedanimation typediscrete formal syntax <box>#where <box> = border-box | padding-box | content-box examples setting background origins .example { border: 10px double; padding: 10px; background: url('image.jpg'); background-position: center left; background-origin: content-box; } #example2 { border: 4px solid black; padding: 10px; background: url('image.gif'); background-repeat: no-repeat; background-origin: border-box; } div { background-image: url('logo.jpg'), url('mainback.png'); /* applies two images to the background */ backgroun...

border-bottom-left-radius - CSS: Cascading Style Sheets
the background color is clipped at the border div { border-bottom-left-radius:40%; border-style: black 3px double; background-color: rgb(250,20,70); background-clip: content-box; } specifications specification status comment css backgrounds and borders module level 3the definition of 'border-bottom-left-radius' in that specification.

border-bottom-right-radius - CSS: Cascading Style Sheets
the background color is clipped at the border div { border-bottom-right-radius:40%; border-style: black 3px double; background-color: rgb(250,20,70); background-clip: content-box; } specifications specification status comment css backgrounds and borders module level 3the definition of 'border-bottom-right-radius' in that specification.

border-bottom - CSS: Cascading Style Sheets
m-style is none or hiddenborder-bottom-style: as specifiedborder-bottom-color: computed coloranimation typeas each of the properties of the shorthand:border-bottom-color: a colorborder-bottom-style: discreteborder-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> ]?

border-left - CSS: Cascading Style Sheets
border-left-style is none or hiddenborder-left-style: as specifiedborder-left-color: computed coloranimation typeas each of the properties of the shorthand:border-left-color: a colorborder-left-style: discreteborder-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> ]?

border-right - CSS: Cascading Style Sheets
-right-style is none or hiddenborder-right-style: as specifiedborder-right-color: computed coloranimation typeas each of the properties of the shorthand:border-right-color: a colorborder-right-style: discreteborder-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> ]?

border-top-left-radius - CSS: Cascading Style Sheets
the box is a square: an arc of circle is used as the border div { border-top-left-radius: 40%; } the box is not a square: an arc of ellipse is used as the border div { border-top-left-radius: 40%; } the background color is clipped at the border div { border-top-left-radius:40%; border-style: black 3px double; background-color: rgb(250,20,70); background-clip: content-box; } specifications specification status comment css backgrounds and borders module level 3the definition of 'border-top-left-radius' in that specification.

border-top-right-radius - CSS: Cascading Style Sheets
the box is not a square: an arc of ellipse is used as the border div { border-top-right-radius: 40%; } the background color is clipped at the border div { border-top-right-radius:40%; border-style: black 3px double; background-color: rgb(250,20,70); background-clip: content-box; } specifications specification status comment css backgrounds and borders module level 3the definition of 'border-top-right-radius' in that specification.

border-top - CSS: Cascading Style Sheets
0 if border-top-style is none or hiddenborder-top-style: as specifiedborder-top-color: computed coloranimation typeas each of the properties of the shorthand:border-top-color: a colorborder-top-style: discreteborder-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> ]?

border - CSS: Cascading Style Sheets
r-right-color: a colorborder-top-color: a colorborder-style: discreteborder-width: as each of the properties of the shorthand:border-bottom-width: a lengthborder-left-width: a lengthborder-right-width: a lengthborder-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> ]?

column-rule-style - CSS: Cascading Style Sheets
syntax /* <'border-style'> values */ column-rule-style: none; column-rule-style: hidden; column-rule-style: dotted; column-rule-style: dashed; column-rule-style: solid; column-rule-style: double; column-rule-style: groove; column-rule-style: ridge; column-rule-style: inset; column-rule-style: outset; /* global values */ column-rule-style: inherit; column-rule-style: initial; column-rule-style: unset; the column-rule-style property is specified as a single <'border-style'> value.

Computed value - CSS: Cascading Style Sheets
for example, if an element has specified values font-size: 16px and padding-top: 2em, then the computed value of padding-top is 32px (double the font size).

<custom-ident> - CSS: Cascading Style Sheets
forbidden values a <custom-ident> must not be placed between single or double quotes as this would be identical to a <string>.

brightness() - CSS: Cascading Style Sheets
examples setting brightness using numbers and percentages brightness(0%) /* completely black */ brightness(0.4) /* 40% brightness */ brightness(1) /* no effect */ brightness(200%) /* double brightness */ specifications specification status filter effects module level 1the definition of 'brightness()' in that specification.

contrast() - CSS: Cascading Style Sheets
examples setting contrast using numbers and percentages contrast(0) /* completely gray */ contrast(65%) /* 65% contrast */ contrast(1) /* no effect */ contrast(200%) /* double contrast */ specifications specification status filter effects module level 1the definition of 'contrast()' in that specification.

saturate() - CSS: Cascading Style Sheets
examples saturate(0) /* completely unsaturated */ saturate(.4) /* 40% saturated */ saturate(100%) /* no effect */ saturate(200%) /* double saturation */ specifications specification status filter effects module level 1the definition of 'saturate()' in that specification.

font-family - CSS: Cascading Style Sheets
math this is for the particular stylistic concerns of representing mathematics: superscript and subscript, brackets that cross several lines, nesting expressions, and double struck glyphs with distinct meanings.

Inheritance - CSS: Cascading Style Sheets
then it doubles the font size and applies a font-weight of "bold".

user-select - CSS: Cascading Style Sheets
if a double-click or context-click occurred in sub-elements, the highest ancestor with this value will be selected.

Audio and video manipulation - Developer guides
playbackrate is a number that represents a multiple to be applied to the rate of playback, for example 0.5 represents half speed while 2 represents double speed.

Block formatting context - Developer guides
247); border: 5px solid rebeccapurple; } .box[style] { background-color: aliceblue; border: 5px solid steelblue; } .float { float: left; width: 200px; height: 100px; background-color: rgba(255, 255, 255, .5); border:1px solid black; padding: 10px; } exclude external floats in the following example, we are using display:flow-root and floats to implement double columns layout, beacuse an element in the normal flow that establishes a new bfc must not overlap the margin box of any floats in the same block formatting context as the element itself.

<input type="date"> - HTML: Hypertext Markup Language
however, you'll need to double-check the submitted results to ensure the value is within these dates, if the date picker isn't fully supported on the user's device.

<tr>: The Table Row element - HTML: Hypertext Markup Language
the table and base styles table { border: 1px solid black; font: 16px "open sans", helvetica, arial, sans-serif; border-spacing: 0; border-collapse: collapse; } here we've added the border-spacing and border-collapse properties to eliminate spacing between cells and collapse borders that touch one another to be a single border instead of winding up with double borders.

MIME types (IANA media types) - HTTP
as a multipart document format, it consists of different parts, delimited by a boundary (a string starting with a double dash --).

Clear-Site-Data - HTTP
a directive that does not include the double quotes is invalid.

ETag - HTTP
they are a string of ascii characters placed between double quotes, like "675af34563dc-tr34".

If-Match - HTTP
they are a string of ascii characters placed between double quotes (like "675af34563dc-tr34").

If-None-Match - HTTP
they are a string of ascii characters placed between double quotes (like "675af34563dc-tr34") and may be prefixed by w/ to indicate that the weak comparison algorithm should be used (this is useless with if-none-match as it only uses that algorithm).

If-Range - HTTP
it is a string of ascii characters placed between double quotes (like "675af34563dc-tr34") and may be prefixed by w/ to indicate that the weak comparison algorithm should be used.

Set-Cookie - HTTP
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.

Proxy Auto-Configuration (PAC) file - HTTP
if a proxy is used, the proxy will perform its dns lookup which would double the impact on the dns server.

Details of the object model - JavaScript
erson.prototype = object.create(workerbee.prototype); salesperson.prototype.constructor = salesperson; function engineer() { workerbee.call(this); this.dept = 'engineering'; this.machine = ''; } engineer.prototype = object.create(workerbee.prototype) engineer.prototype.constructor = engineer; java public class salesperson extends workerbee { public string dept = "sales"; public double quota = 100.0; } public class engineer extends workerbee { public string dept = "engineering"; public string machine = ""; } using these definitions, you can create instances of these objects that get the default values for their properties.

Indexed collections - JavaScript
t32array 0 to 4294967295 4 32-bit unsigned integer unsigned long uint32_t float32array 1.2×10-38 to 3.4×1038 4 32-bit ieee floating point number (7 significant digits e.g., 1.1234567) unrestricted float float float64array 5.0×10-324 to 1.8×10308 8 64-bit ieee floating point number (16 significant digits e.g., 1.123...15) unrestricted double double bigint64array -263 to 263-1 8 64-bit two's complement signed integer bigint int64_t (signed long long) biguint64array 0 to 264-1 8 64-bit unsigned integer bigint uint64_t (unsigned long long) for more information, see javascript typed arrays and the reference documentation for the different typedarray objects.

Numbers and dates - JavaScript
numbers in javascript, numbers are implemented in double-precision 64-bit binary format ieee 754 (i.e., a number between ±2−1022 and ±2+1023, or about ±10−308 to ±10+308, with a numeric precision of 53 bits).

SyntaxError: invalid regular expression flag "x" - JavaScript
add single or double quotes to create a string literal.

SyntaxError: missing } after function body - JavaScript
(function() { if (true) { return false; } ); oftentimes, indenting differently or double checking indentation helps to spot these errors.

SyntaxError: missing ; before statement - JavaScript
for example: var foo = 'tom's bar'; // syntaxerror: missing ; before statement you can use double quotes, or escape the apostrophe: var foo = "tom's bar"; var foo = 'tom\'s bar'; declaring properties with var you cannot declare properties of an object or array with a var declaration.

Arrow function expressions - JavaScript
var arr = [5, 6, 13, 0, 1, 18, 23]; var sum = arr.reduce((a, b) => a + b); // 66 var even = arr.filter(v => v % 2 == 0); // [6, 0, 18] var double = arr.map(v => v * 2); // [10, 12, 26, 0, 2, 36, 46] // more concise promise chains promise.then(a => { // ...

Array.prototype.reduceRight() - JavaScript
* * h(x) = f(g(x)) * * function execution happens right to left * * https://en.wikipedia.org/wiki/function_composition */ const compose = (...args) => (value) => args.reduceright((acc, fn) => fn(acc), value) // increment passed number const inc = (n) => n + 1 // doubles the passed value const double = (n) => n * 2 // using composition function console.log(compose(double, inc)(2)); // 6 // using composition function console.log(compose(inc, double)(2)); // 5 specifications specification ecmascript (ecma-262)the definition of 'array.prototype.reduceright' in that specification.

Array.prototype.length - JavaScript
the value in each element is then doubled.

Array.prototype.map() - JavaScript
let numbers = [1, 4, 9] let doubles = numbers.map(function(num) { return num * 2 }) // doubles is now [2, 8, 18] // numbers is still [1, 4, 9] using map generically this example shows how to use map on a string to get an array of bytes in the ascii encoding representing the character values: let map = array.prototype.map let a = map.call('hello world', function(x) { return x.charcodeat(0) }) // a now equals [72, 101, 10...

Boolean - JavaScript
to perform this task, instead, use boolean as a function, or a double not operator: var x = boolean(expression); // use this...

DataView.prototype.getFloat64() - JavaScript
the getfloat64() method gets a signed 64-bit float (double) at the specified byte offset from the start of the dataview.

DataView.prototype.setFloat64() - JavaScript
the setfloat64() method stores a signed 64-bit float (double) value at the specified byte offset from the start of the dataview.

Float64Array() constructor - JavaScript
the float64array() typed array constructor creates a new float64array object, which is, an array of 64-bit floating point numbers (corresponding to the c double data type) in the platform byte order.

Float64Array - JavaScript
the float64array typed array represents an array of 64-bit floating point numbers (corresponding to the c double data type) in the platform byte order.

Intl.Locale.prototype.numberingSystem - JavaScript
kali kayah li digits khmr khmer digits knda kannada digits lana tai tham hora (secular) digits lanatham tai tham tham (ecclesiastical) digits laoo lao digits latn latin digits lepc lepcha digits limb limbu digits mathbold mathematical bold digits mathdbl mathematical double-struck digits mathmono mathematical monospace digits mathsanb mathematical sans-serif bold digits mathsans mathematical sans-serif digits mlym malayalam digits modi modi digits mong mongolian digits mroo mro digits mtei meetei mayek digits mymr myanmar digits mymrshan myanmar sh...

Math.log1p() - JavaScript
the double floats used in js give you about 15 digits of precision.

Number.MAX_SAFE_INTEGER - JavaScript
the reasoning behind that number is that javascript uses double-precision floating-point format numbers as specified in ieee 754 and can only safely represent numbers between -(253 - 1) and 253 - 1.

Number.MIN_SAFE_INTEGER - JavaScript
the reasoning behind that number is that javascript uses double-precision floating-point format numbers as specified in ieee 754 and can only safely represent numbers between -(253 - 1) and 253 - 1.

Number.isSafeInteger() - JavaScript
a safe integer is an integer that can be exactly represented as an ieee-754 double precision number, and whose ieee-754 representation cannot be the result of rounding any other integer to fit the ieee-754 representation.

Number - JavaScript
the javascript number type is a double-precision 64-bit binary format ieee 754 value, like double in java or c#.

TypedArray.prototype.map() - JavaScript
const numbers = new uint8array([1, 4, 9]); const doubles = numbers.map(function(num) { return num * 2; }); // doubles is now uint8array [2, 8, 18] // numbers is still uint8array [1, 4, 9] specifications specification ecmascript (ecma-262)the definition of 'typedarray.prototype.map' in that specification.

TypedArray - JavaScript
t32array 0 to 4294967295 4 32-bit unsigned integer unsigned long uint32_t float32array 1.2×10-38 to 3.4×1038 4 32-bit ieee floating point number (7 significant digits e.g., 1.1234567) unrestricted float float float64array 5.0×10-324 to 1.8×10308 8 64-bit ieee floating point number (16 significant digits e.g., 1.123...15) unrestricted double double bigint64array -263 to 263-1 8 64-bit two's complement signed integer bigint int64_t (signed long long) biguint64array 0 to 264-1 8 64-bit unsigned integer bigint uint64_t (unsigned long long) constructor this object cannot be instantiated directly.

Logical AND (&&) - JavaScript
to explicitly convert its return value (or any expression in general) to the corresponding boolean value, use a double not operator or the boolean constructor.

Logical OR (||) - JavaScript
to explicitly convert its return value (or any expression in general) to the corresponding boolean value, use a double not operator or the boolean constructor.

Object initializer - JavaScript
the property name must be double-quoted, and the definition cannot be a shorthand.

Pipeline operator (|>) - JavaScript
const double = (n) => n * 2; const increment = (n) => n + 1; // without pipeline operator double(increment(double(double(5)))); // 42 // with pipeline operator 5 |> double |> double |> increment |> double; // 42 specifications specification pipeline operatorthe definition of 'pipeline operator' in that specification.

import - JavaScript
only single quoted and double quoted strings are allowed.

Template literals (Template strings) - JavaScript
syntax `string text` `string text line 1 string text line 2` `string text ${expression} string text` tag`string text ${expression} string text` description template literals are enclosed by the backtick (` `) (grave accent) character instead of double or single quotes.

JavaScript typed arrays - JavaScript
nt32array 0 to 4294967295 4 32-bit unsigned integer unsigned long uint32_t float32array 1.2×10-38 to 3.4×1038 4 32-bit ieee floating point number (7 significant digits e.g., 1.123456) unrestricted float float float64array 5.0×10-324 to 1.8×10308 8 64-bit ieee floating point number (16 significant digits e.g., 1.123...15) unrestricted double double bigint64array -263 to 263-1 8 64-bit two's complement signed integer bigint int64_t (signed long long) biguint64array 0 to 264-1 8 64-bit unsigned integer bigint uint64_t (unsigned long long) dataview the dataview is a low-level interface that provides a getter/setter api to read and write arbitrary data to the buffer.

<mi> - MathML
the following values are allowed: normal (default value for more than one character) ; example bold ; example italic (default value for a single character) ; example bold-italic ; example double-struck ; example bold-fraktur ; example script ; example bold-script ; example fraktur ; example sans-serif ; example bold-sans-serif ; example sans-serif-italic ; example sans-serif-bold-italic ; example monospace ; example initial ; مثال tailed ; مثال looped ; مثال stretched ; مثال examples <math> <mi> y </mi> <mi> sin </mi> <...

<mn> - MathML
the following values are allowed: normal (default value) ; example bold ; example italic ; example bold-italic ; example double-struck ; example bold-fraktur ; example script ; example bold-script ; example fraktur ; example sans-serif ; example bold-sans-serif ; example sans-serif-italic ; example sans-serif-bold-italic ; example monospace ; example initial ; مثال tailed ; مثال looped ; مثال stretched ; مثال examples <math> <mn> 0 </mn> <mn> 1.337 </mn> ...

<mo> - MathML
the following values are allowed: normal (default value) ; example bold ; example italic ; example bold-italic ; example double-struck ; example bold-fraktur ; example script ; example bold-script ; example fraktur ; example sans-serif ; example bold-sans-serif ; example sans-serif-italic ; example sans-serif-bold-italic ; example monospace ; example initial ; مثال tailed ; مثال looped ; مثال stretched ; مثال maxsize if stretchy is true, this attribute specifies th...

<mtext> - MathML
the following values are allowed: normal (default value) ; example bold ; example italic ; example bold-italic ; example double-struck ; example bold-fraktur ; example script ; example bold-script ; example fraktur ; example sans-serif ; example bold-sans-serif ; example sans-serif-italic ; example sans-serif-bold-italic ; example monospace ; example normal (default) ; مثال initial ; مثال tailed ; مثال looped ; مثال stretched ; مثال examples <math> <mtext...

MathML documentation index - MathML
by default, string literals are displayed as enclosed by double quotes (&quot;); by using the lquote and rquote attributes, you can set custom characters to display.

CSS and JavaScript animation performance - Web Performance
double-click the entry to set the value to true.

Populating the page: how browsers work - Web Performance
in tcp slow start, after receipt of the initial packet, the server doubles the size of the next packet to around 28kb.

Media - Progressive web apps (PWAs)
for double-sided printing, you can specify the margins separately for @page:left and @page:right.

name - SVG: Scalable Vector Graphics
unlike the syntax allowed between the parentheses of the local(…) clause in an @font-face rule src descriptor, the font name specified in this attribute is not surrounded in single or double quotes.

<view> - SVG: Scalable Vector Graphics
xmlns:xlink="http://www.w3.org/1999/xlink"> <defs> <radialgradient id="gradient"> <stop offset="0%" stop-color="#8cffa0" /> <stop offset="100%" stop-color="#8ca0ff" /> </radialgradient> </defs> <circle r="50" cx="180" cy="50" style="fill:url(#gradient)"/> <view id="halfsizeview" viewbox="0 0 1200 400"/> <view id="normalsizeview" viewbox="0 0 600 200"/> <view id="doublesizeview" viewbox="0 0 300 100"/> <a xlink:href="#halfsizeview"> <text x="5" y="20" font-size="20">half size</text> </a> <a xlink:href="#normalsizeview"> <text x="5" y="40" font-size="20">normal size</text> </a> <a xlink:href="#doublesizeview"> <text x="5" y="60" font-size="20">double size</text> </a> </svg> result dom interface this element implements the svgviewelem...

Clipping and masking - SVG: Scalable Vector Graphics
the yellow stroke is set to 50% opacity, which leads effectively to a double-color stroke.

Positions - SVG: Scalable Vector Graphics
this effectively zooms in on the 100x100 unit area and enlarges the image to double size.

Same-origin policy - Web security
(a "tuple" is a set of items that together comprise a whole — a generic form for double/triple/quadruple/quintuple/etc.) the following table gives examples of origin comparisons with the url http://store.company.com/dir/page.html: url outcome reason http://store.company.com/dir2/other.html same origin only the path differs http://store.company.com/dir/inner/another.html same origin only the path differs https://store.company.co...

XML introduction - XML: Extensible Markup Language
there are five of these characters that you should know: entity character description &lt; < less than sign &gt; > greater than sign &amp; & ampersand &quot; " one double-quotation mark &apos; ' one apostrophe (or single-quotation mark) even though there are only 5 declared entities, more can be added using the document's document type definition.

Introduction to using XPath in JavaScript - XPath
simple types when the desired result type in resulttype is specified as either: number_type - a double string_type - a string boolean_type - a boolean we obtain the returned value of the expression by accessing the following properties respectively of the xpathresult object.

Understanding WebAssembly text format - WebAssembly
our final wasm module looks like this: (module (import "console" "log" (func $log (param i32 i32))) (import "js" "mem" (memory 1)) (data (i32.const 0) "hi") (func (export "writehi") i32.const 0 ;; pass offset 0 to log i32.const 2 ;; pass length 2 to log call $log)) note: above, note the double semi-colon syntax (;;) for allowing comments in webassembly files.