arrowscrollbox - Archive of obsolete content
ch provides scroll arrows along its edges for scrolling through the contents of the box. the user only needs to hover the mouse over the arrows to scroll the box. this element is typically used for large popup menus. hovering the mouse over one of the (active) arrows triggers a scroll event. more information is available in the xul tutorial. ...
... box. the user only needs to hover the mouse over the arrows to scroll the box. this element is typically used for large popup menus. hovering the mouse over one of the (active) arrows triggers a scroll event. more information is available in the xul tutorial. ...
...sible controls have a disabled property which, except for menus and menuitems, is normally preferred to use of the attribute, as it may need to update additional state. smoothscroll type: boolean true initially enables smooth scrolling for the corresponding arrowscrollbox, false disables it. currently, smooth scrolling supports horizontal arrowscrollboxes only. tabindex type: integer the tab order of the element. the tab order is the order in which the focus is moved when the user presses the "tab" key. elements with a higher tabindex are later in the tab sequence. properties inherited properties align, , allowevents, , boxobject, builder, , , , classname, , , , , collapsed, contextmenu, controllers, database, datasources, dir, , , flex, height, hidde...
...ng will occur when the arrowscrollbox is clicked. smoothscroll type: boolean can be set to enable or disable smooth scrolling for the corresponding arrowscrollbox. if not set explicitly, it will fall back to the smoothscroll attribute and then to the toolkit.scrollbox.smoothscroll preference. currently, smooth scrolling supports horizontal arrowscrollboxes only. tabindex type: integer gets and sets the value of the tabindex attribute. methods ensureelementisvisible( element ) return type: no return value if the specified element is not currently visible to the user, the displayed items are scrolled so that it is. if the item is already visible, no scrolling occurs. scrollbyindex( lines ) return type: no return value scr...

colorpicker - Archive of obsolete content
if this attribute is set, the element is disabled. disabled elements are usually drawn with grayed-out text. ...
...if this attribute is set, the element is disabled. disabled elements are usually drawn with grayed-out text. ...
.../* do something cool here or just say the below */ alert(e.target.nodename); } </script> <textbox id="find-text" onchange="return myfunction(event);"/> </window> preference type: id connects the element to a corresponding preference. this attribute only has any effect when used inside a prefwindow. more information is available in the preferences system article. tabindex type: integer the tab order of the element. the tab order is the order in which the focus is moved when the user presses the "tab" key. elements with a higher tabindex are later in the tab sequence. type type: string if this attribute is not present, the colorpicker is displayed inside the window. if this is set to the text button, the colorpicker is displayed as a button. when the use...
...fied when the user selects a color. you can assign a string of the form #rrggbb to this property to change the selected color. disabled type: boolean gets and sets the value of the disabled attribute. open type: boolean returns true if the popup for a button-type colorpicker is open. set this property to true to open the popup or false to close the popup. tabindex type: integer gets and sets the value of the tabindex attribute. value property gets and sets color attribute methods inherited methods addeventlistener(), appendchild(), blur, click, clonenode(), comparedocumentposition, dispatchevent(), docommand, focus, getattribute(), getattributenode(), getattributenodens(), getattributens(), getboundingclientrect(), getclientrects(), ge...

listbox - Archive of obsolete content
cted to contain listitem elements. all the rows in the listbox are the same height, which is the height of the tallest item in the list. if you wish to create a list with variable height rows, or with non-text content, you should instead use the richlistbox element. see list controls for more information. ...
...you should instead use the richlistbox element. see list controls for more information. ...
... rows are selected; however, the selection highlight appears only over the text of the primary column. for richlistbox, this is new in firefox 3.5. suppressonselect type: boolean if this attribute is not specified, a select event is fired whenever an item is selected, either by the user or by calling one of the select methods. if set to true, the select event is never fired. tabindex type: integer the tab order of the element. the tab order is the order in which the focus is moved when the user presses the "tab" key. elements with a higher tabindex are later in the tab sequence. value type: string the string attribute allows you to associate a data value with an element. it is not used for any specific purpose, but you can access it with a script for your own use. b...
...was selected) when it is changed either via this property, the selectedindex property, or changed by the user. selecteditems type: array of listitems returns an array of the selected items in the list. seltype type: string gets and sets the value of the seltype attribute. suppressonselect type: boolean gets and sets the value of the suppressonselect attribute. tabindex type: integer gets and sets the value of the tabindex attribute. value type: string gets and sets the value of the value attribute. for textbox and user editable menulist elements, the contents, as visible to the user, are read and set using the textbox.value and menulist.value syntax. methods inherited methods addeventlistener(), appendchild(), blur, click, c...

listitem - Archive of obsolete content
x. the text of the listitem is specified either using listcell elements, or by placing a label attribute directly on the listitem element. by default it contains a single listcell element of type and class appropriate to that of the listitem. more information is available in the xul tutorial. ...
...m element. by default it contains a single listcell element of type and class appropriate to that of the listitem. more information is available in the xul tutorial. attributes accesskey, checked, command, crop, current, disabled, image, label, preference, selected, tabindex, type, value properties accesskey, accessible, checked, control, crop, current, disabled, image, label, selected, tabindex, value style classes listitem-iconic examples <listbox id="thelist"> <listitem label="ruby"/> <listitem label="emerald"/> <listitem label="sapphire" selected="true"/> <listitem label="diamond"/> </listbox> attributes accesskey type: character this should be set to a character that is used as a shortcut key. this should be one of the characters that appears in the lab...
...nects the element to a corresponding preference. this attribute only has any effect when used inside a prefwindow. more information is available in the preferences system article. selected type: boolean indicates whether the element is selected or not. this value is read-only. to change the selection, set either the selectedindex or selecteditem property of the containing element. tabindex type: integer the tab order of the element. the tab order is the order in which the focus is moved when the user presses the "tab" key. elements with a higher tabindex are later in the tab sequence. type type: string you can make an item in a listbox a checkbox by setting this attribute to the value checkbox. value type: string the string attribute allows you to associate a data...
...age url gets and sets the value of the image attribute. label type: string gets and sets the value of the label attribute. selected type: boolean this property's value is true if this element is selected, or false if it is not. this property is read only. this property is available for menuitem and menuseparator elements in firefox 3. tabindex type: integer gets and sets the value of the tabindex attribute. value type: string gets and sets the value of the value attribute. for textbox and user editable menulist elements, the contents, as visible to the user, are read and set using the textbox.value and menulist.value syntax. methods inherited methods addeventlistener(), appendchild(), blur, click, c...

menuitem - Archive of obsolete content
« xul reference home [ examples | attributes | properties | methods | related ] a single choice in a menupopup element. it acts much like a button but it is rendered on a menu. more information is available in the xul tutorial. ...
...but it is rendered on a menu. more information is available in the xul tutorial. ...
...lection of the menuitem. name type: string name radio menuitems with the same name as put into a group. only one menuitem in each radio group can be checked at a time. selected type: boolean indicates whether the element is selected or not. this value is read-only. to change the selection, set either the selectedindex or selecteditem property of the containing element. tabindex type: integer the tab order of the element. the tab order is the order in which the focus is moved when the user presses the "tab" key. elements with a higher tabindex are later in the tab sequence. type type: one of the values below can be used to create checkable menuitems or for radio button menuitems. checkbox the menuitem is checked. the checked attribute determines whether...
...control. parentcontainer type: menu element read only property that returns the containing menu element, or null if there isn't a containing menu. selected type: boolean this property's value is true if this element is selected, or false if it is not. this property is read only. this property is available for menuitem and menuseparator elements in firefox 3. tabindex type: integer gets and sets the value of the tabindex attribute. value type: string gets and sets the value of the value attribute. for textbox and user editable menulist elements, the contents, as visible to the user, are read and set using the textbox.value and menulist.value syntax. inherited properties align, , allowevents, , boxobject, builder, , , , classn...

menulist - Archive of obsolete content
ist element. to create the drop-down, put a menupopup inside the menulist containing the choices as menuitem elements. the command event may be used to execute code when the menulist selection changes. more information is available in the xul tutorial. ...
...rmation is available in the xul tutorial. ...
...pup will also be this width. none the width of the popup will not be constrained to the size of the menu. pref the preferred width of the menu label or button will be the size needed for the popup contents. this is the default value for menulists. always both the preferred and minimum width of the menu label or button will be the same as that necessary for the menupopup. tabindex type: integer the tab order of the element. the tab order is the order in which the focus is moved when the user presses the "tab" key. elements with a higher tabindex are later in the tab sequence. value type: string the string attribute allows you to associate a data value with an element. it is not used for any specific purpose, but you can access it with a script for your own use. b...
...nt holds the currently selected item. if no item is currently selected, this value will be null. you can select an item by setting this value. a select event will be sent to the controlling container (i.e. the listbox, richlistbox, radiogroup, etc., not the list item that was selected) when it is changed either via this property, the selectedindex property, or changed by the user. tabindex type: integer gets and sets the value of the tabindex attribute. value type: string gets and sets the value of the value attribute. for textbox and user editable menulist elements, the contents, as visible to the user, are read and set using the textbox.value and menulist.value syntax. methods inherited methods addeventlistener(), appendchild(), blur, click, c...

menuseparator - Archive of obsolete content
« xul reference home [ examples | attributes | properties | methods | related ] used to create a separator between menu items. typically drawn as a thin line. more information is available in the xul tutorial. ...
...ethods | related ] used to create a separator between menu items. typically drawn as a thin line. more information is available in the xul tutorial. attributes acceltext, accesskey, allowevents, command, crop, disabled, image, label, selected, tabindex, value properties accessibletype, accesskey, command, control, crop, disabled, image, label, labelelement, parentcontainer, selected, tabindex, value examples <menu label="menu"> <menupopup> <menuitem label="item1"/> <menuseparator/> <menuitem label="item2"/> <menuitem label="item3"/> </menupopup> </menu> attributes acceltext type: string text that appears beside the menu label to indicate the shortcut key (accelerator key) to use to invoke the command. if this value is set, it overri...
...f this is left out, no text appears. for an editable menuitem element the value of this attribute is copied to the menulist.value property upon user selection of the menuitem. selected type: boolean indicates whether the element is selected or not. this value is read-only. to change the selection, set either the selectedindex or selecteditem property of the containing element. tabindex type: integer the tab order of the element. the tab order is the order in which the focus is moved when the user presses the "tab" key. elements with a higher tabindex are later in the tab sequence. value type: string the string attribute allows you to associate a data value with an element. it is not used for any specific purpose, but you can access it with a script for your own use. ...
...trol. parentcontainer type: menu element read only property that returns the containing menu element, or null if there isn't a containing menu. selected type: boolean this property's value is true if this element is selected, or false if it is not. this property is read only. this property is available for menuitem and menuseparator elements in firefox 3. tabindex type: integer gets and sets the value of the tabindex attribute. value type: string gets and sets the value of the value attribute. for textbox and user editable menulist elements, the contents, as visible to the user, are read and set using the textbox.value and menulist.value syntax. methods inherited methods addeventlistener(), appendchild(), blur, click, ...

radio - Archive of obsolete content
y be selected at a time. the user can switch which radio button is turned on by selecting it with the mouse or keyboard. other radio buttons in the same group are turned off. a label, specified with the label attribute may be added beside the radio button. more information is available in the xul tutorial. ...
... other radio buttons in the same group are turned off. a label, specified with the label attribute may be added beside the radio button. more information is available in the xul tutorial. attributes accesskey, command, crop, disabled, focused, group, image, label, selected, tabindex, value properties accesskey, accessibletype, control, crop, disabled, image, label, radiogroup, selected, tabindex, value examples <radiogroup> <radio id="orange" label="red" accesskey="r"/> <radio id="violet" label="green" accesskey="g" selected="true"/> <radio id="yellow" label="blue" accesskey="b" disabled="true"/> </radiogroup> attributes accesskey type: character this should be set to a character that is used as a shortcut key. this should be one of the characters that appears i...
...f this is left out, no text appears. for an editable menuitem element the value of this attribute is copied to the menulist.value property upon user selection of the menuitem. selected type: boolean indicates whether the element is selected or not. this value is read-only. to change the selection, set either the selectedindex or selecteditem property of the containing element. tabindex type: integer the tab order of the element. the tab order is the order in which the focus is moved when the user presses the "tab" key. elements with a higher tabindex are later in the tab sequence. value type: string the string attribute allows you to associate a data value with an element. it is not used for any specific purpose, but you can access it with a script for your own use. ...
... type: string gets and sets the value of the label attribute. radiogroup type: radiogroup element equivalent to the control property. selected type: boolean this property's value is true if this element is selected, or false if it is not. this property is read only. this property is available for menuitem and menuseparator elements in firefox 3. tabindex type: integer gets and sets the value of the tabindex attribute. value type: string gets and sets the value of the value attribute. for textbox and user editable menulist elements, the contents, as visible to the user, are read and set using the textbox.value and menulist.value syntax. methods inherited methods addeventlistener(), appendchild(), blur, click, ...

radiogroup - Archive of obsolete content
radio buttons. only one radio button inside the group can be selected at a time. the radio buttons may either direct children of the radiogroup or descendants. place the radiogroup inside a groupbox if you would like a border or caption for the group. the radiogroup defaults to vertical orientation. more information is available in the xul tutorial. ...
...direct children of the radiogroup or descendants. place the radiogroup inside a groupbox if you would like a border or caption for the group. the radiogroup defaults to vertical orientation. more information is available in the xul tutorial. attributes disabled, focused, preference, tabindex, value properties accessibletype, disabled, focuseditem, itemcount, selectedindex, selecteditem, tabindex, value methods appenditem, checkadjacentelement, getindexofitem, getitematindex, insertitemat, removeitemat examples <radiogroup> <radio id="orange" label="red"/> <radio id="violet" label="green" selected="true"/> <radio id="yellow" label="blue"/> </radiogroup> attributes disabled type: boolean indicates whether the element is disabled or not. if this attribute is set, ...
...uitems, is normally preferred to use of the attribute, as it may need to update additional state. focused type: boolean this attribute is true if the element is focused. preference type: id connects the element to a corresponding preference. this attribute only has any effect when used inside a prefwindow. more information is available in the preferences system article. tabindex type: integer the tab order of the element. the tab order is the order in which the focus is moved when the user presses the "tab" key. elements with a higher tabindex are later in the tab sequence. value type: string the string attribute allows you to associate a data value with an element. it is not used for any specific purpose, but you can access it with a script for your own use. ...
...t holds the currently selected item. if no item is currently selected, this value will be null. you can select an item by setting this value. a select event will be sent to the controlling container (i.e. the listbox, richlistbox, radiogroup, etc., not the list item that was selected) when it is changed either via this property, the selectedindex property, or changed by the user. tabindex type: integer gets and sets the value of the tabindex attribute. value type: string gets and sets the value of the value attribute. for textbox and user editable menulist elements, the contents, as visible to the user, are read and set using the textbox.value and menulist.value syntax. methods inherited methods addeventlistener(), appendchild(), blur, click, ...

richlistbox - Archive of obsolete content
t is used to create a list of listitems (richlistitems), similar to a listbox, but is designed to be used when the items do not contain simple text content. note: in versions of firefox prior to firefox 3, rich list boxes support only single selection. firefox 3 introduced multiple selection to rich list boxes. ...
...s support only single selection. firefox 3 introduced multiple selection to rich list boxes. ...
... rows are selected; however, the selection highlight appears only over the text of the primary column. for richlistbox, this is new in firefox 3.5. suppressonselect type: boolean if this attribute is not specified, a select event is fired whenever an item is selected, either by the user or by calling one of the select methods. if set to true, the select event is never fired. tabindex type: integer the tab order of the element. the tab order is the order in which the focus is moved when the user presses the "tab" key. elements with a higher tabindex are later in the tab sequence. value type: string the string attribute allows you to associate a data value with an element. it is not used for any specific purpose, but you can access it with a script for your own use. ...
...selected) when it is changed either via this property, the selectedindex property, or changed by the user. selecteditems type: array of listitems returns an array of the selected items in the list. seltype type: string gets and sets the value of the seltype attribute. suppressonselect type: boolean gets and sets the value of the suppressonselect attribute. tabindex type: integer gets and sets the value of the tabindex attribute. value type: string gets and sets the value of the value attribute. for textbox and user editable menulist elements, the contents, as visible to the user, are read and set using the textbox.value and menulist.value syntax. methods inherited methods addeventlistener(), appendchild(), blur, click, ...

richlistitem - Archive of obsolete content
if this attribute is set, the element is disabled. disabled elements are usually drawn with grayed-out text. ...
...if this attribute is set, the element is disabled. disabled elements are usually drawn with grayed-out text. ...
...uations where the search text is ambiguous or missing, searchlabel can be used to give context to fayt. if searchlabel is not present, fayt falls back to use the label property. selected type: boolean indicates whether the element is selected or not. this value is read-only. to change the selection, set either the selectedindex or selecteditem property of the containing element. tabindex type: integer the tab order of the element. the tab order is the order in which the focus is moved when the user presses the "tab" key. elements with a higher tabindex are later in the tab sequence. value type: string the string attribute allows you to associate a data value with an element. it is not used for any specific purpose, but you can access it with a script for your own use. ...
...label values. use the child elements directly to set label text. searchlabel type: string gets and sets the value of the searchlabel attribute. selected type: boolean this property's value is true if this element is selected, or false if it is not. this property is read only. this property is available for menuitem and menuseparator elements in firefox 3. tabindex type: integer gets and sets the value of the tabindex attribute. value type: string gets and sets the value of the value attribute. for textbox and user editable menulist elements, the contents, as visible to the user, are read and set using the textbox.value and menulist.value syntax. methods inherited methods addeventlistener(), appendchild(), blur, click, ...

tabs - Archive of obsolete content
tabs. a tabs element should be placed inside a tabbox and should contain tab elements. nb: you can add some other elements to tabs such as button, but they will receive an index. activating them will not change the selectedindex. more information is available in the xul tutorial. ...
...elements to tabs such as button, but they will receive an index. activating them will not change the selectedindex. more information is available in the xul tutorial. attributes closebutton, disableclose, disabled, onclosetab, onnewtab, onselect, setfocus, selectedindex, tabbox, tabindex, tooltiptextnew, value, properties accessibletype, disabled, itemcount, selectedindex, selecteditem, tabindex, value, methods advanceselectedtab, appenditem, getindexofitem, getitematindex, insertitemat, removeitemat examples (example needed) attributes closebutton obsolete since gecko 1.9.2 type: boolean if this attribute is set to true, the tabs row will have a "new tab" button and "close" button on the ends. this feature is used by the tabbrowser to provide the facil...
...his tab is changed. selectedindex type: integer gets and sets the index of the currently selected panel. the first item is at index 0. setfocus type: boolean if true or omitted, the focus will be given to the first element in the corresponding tabpanel when the tabs are navigated via the keyboard. if this attribute is false, the focus does not change during navigation. tabindex type: integer the tab order of the element. the tab order is the order in which the focus is moved when the user presses the "tab" key. elements with a higher tabindex are later in the tab sequence. tooltiptextnew not in firefox type: string used to set the text which appears in the tooltip when the user moves the mouse over the new button in the tab row. properties acce...
...value will be null. you can select an item by setting this value. a select event will be sent to the controlling container (i.e. the listbox, richlistbox, radiogroup, etc., not the list item that was selected) when it is changed either via this property, the selectedindex property, or changed by the user. tabbox type: tabbox element returns the tabbox element that contains the tabs. tabindex type: integer gets and sets the value of the tabindex attribute. value type: string gets and sets the value of the value attribute. for textbox and user editable menulist elements, the contents, as visible to the user, are read and set using the textbox.value and menulist.value syntax. methods inherited methods addeventlistener(), appendchild(), blur, click, ...

textbox - Archive of obsolete content
is displayed by default. the multiline attribute can be specified to display a field with multiple rows. more information is available in the xul tutorial. ...
... decimalplaces ty...
...put type="text" spellcheck="false" /><br /> <textarea spellcheck="false"></textarea> <div contenteditable="true" spellcheck="false">i am some content</div> you can use spellcheck on input, textarea, and contenteditable elements. thespellcheck attribute works well paired with the autocomplete, autocapitalize, and autocorrect attributes too! added from david walsh's article on spell check. tabindex type: integer the tab order of the element. the tab order is the order in which the focus is moved when the user presses the "tab" key. elements with a higher tabindex are later in the tab sequence. timeout type: integer for autocomplete textboxes, the number of milliseconds before the textbox starts searching for completions. the default is 50 milliseconds. for search textboxes, the nu...
...set the beginning of the selected portion of the field's text. use in conjuction with the selectionend property. the value specifies the index of the first selected character. size type: integer gets and sets the value of the size attribute. spinbuttons type: element the read-only property returns a reference to the spinbuttons element used by the number box. tabindex type: integer gets and sets the value of the tabindex attribute. textlength type: integer holds the length of the text entered in the textbox. this property is read-only. timeout type: integer gets and sets the value of the timeout attribute. type type: string gets and sets the value of the type attribute. value type: string ...

toolbarbutton - Archive of obsolete content
where possible, provide keyboard alternatives. where possible, duplicate functionality in a menu item or context menu. where not possible, make all toolbarbuttons focusable by -moz-user-focus: normal. ...
...focusable by -moz-user-focus: normal. ...
...rizontally or vertically. the default value depends on the element. you can also use the -moz-box-orient style property. horizontal child elements of the element are placed next to each other in a row in the order that they appear in the xul source. vertical child elements of the element are placed under each other in a column in the order that they appear in the xul source. tabindex type: integer the tab order of the element. the tab order is the order in which the focus is moved when the user presses the "tab" key. elements with a higher tabindex are later in the tab sequence. title type: string this functionality only applies when toolbarbutton is used in the customize toolbar dialog. the text that is displayed as a button's label when it's in the customize toolbar...
... of the group attribute. image type: image url gets and sets the value of the image attribute. label type: string gets and sets the value of the label attribute. open type: boolean gets and sets the value of the open attribute. orient type: string gets and sets the value of the orient attribute. tabindex type: integer gets and sets the value of the tabindex attribute. type type: string gets and sets the value of the type attribute. methods inherited methods addeventlistener(), appendchild(), blur, click, clonenode(), comparedocumentposition, dispatchevent(), docommand, focus, getattribute(), getattributenode(), getattributenodens(), getattributens(), get...

tree - Archive of obsolete content
l tutorial. also tree widget changes. relevant accessbility guidelines provide alternative access (for example, via menus) to column picker and for header behaviors like sorting (these have no default keyboard access). ...
...rd access). ...
...irefox 3.5. statedatasource type: uri chrome xul may specify an rdf datasource to use to store tree state information. this is used to hold which tree items are open and which items are collapsed. this information will be remembered for the next time the xul file is opened. if you do not specify this attribute, state information will be stored in the local store (rdf:local-store). tabindex type: integer the tab order of the element. the tab order is the order in which the focus is moved when the user presses the "tab" key. elements with a higher tabindex are later in the tab sequence. treelines type: boolean when set to true, lines are drawn connecting the lines in the tree; when false, the lines are not drawn. this is false by default. properties accessiblety...
...ype: string gets and sets the value of the seltype attribute. selstyle type: string if set to the value primary, only the label of the primary column will be highlighted when an item in the tree is selected. otherwise, the entire row will be highlighted. to see the difference, compare the selection style in the folder list and the message list in mozilla mail. tabindex type: integer gets and sets the value of the tabindex attribute. treeboxobject type: nsitreeboxobject the box object is responsible for rendering the tree on the window. this object implements the nsitreeboxobject interface and contains functions for retrieving the cells at certain coordinates, redrawing cells and scrolling the tree. this property is equivalent to the boxobjec...

HTML: A good basis for accessibility - Learn web development
ust used <button> elements, plus you don't get any of the default css styling that buttons get. building keyboard accessibility back in adding such advantages back in takes a bit of work (you can see an example in our fake-div-buttons.html example — also see the source code). ...
... css styling that buttons get. building keyboard accessibility back in adding such advantages back in takes a bit of work (you can see an example in our fake-div-buttons.html example — also see the source code). ...
...such advantages back in takes a bit of work (you can see an example in our fake-div-buttons.html example — also see the source code). here we've given our fake <div> buttons the ability to be focused (including via tab) by giving each one the attribute tabindex="0": <div data-message="this is from the first button" tabindex="0">click me!</div> <div data-message="this is from the second button" tabindex="0">click me too!</div> <div data-message="this is from the third button" tabindex="0">and me!</div> basically, the tabindex attribute is primarily intended to allow tabbable elements to have a custom tab order (specified in positive numerical order), instead of just being tabbed through in their default source order. this is nearly always a bad idea, as it can cause major confusion. use it only...
...stom tab order (specified in positive numerical order), instead of just being tabbed through in their default source order. this is nearly always a bad idea, as it can cause major confusion. use it only if you really need to, for example, if the layout shows things in a very different visual order to the source code, and you want to make things work more logically. there are two other options for tabindex: tabindex="0" — as indicated above, this value allows elements that are not normally tabbable to become tabbable. this is the most useful value of tabindex. tabindex="-1" — this allows not normally tabbable elements to receive focus programmatically, e.g., via javascript, or as the target of links. whilst the above addition allows us to tab to the buttons, it does not allow us to activ...

HTML: A good basis for accessibility - Learn web development
ust used <button> elements, plus you don't get any of the default css styling that buttons get. building keyboard accessibility back in adding such advantages back in takes a bit of work (you can see an example in our fake-div-buttons.html example — also see the source code). ...
... css styling that buttons get. building keyboard accessibility back in adding such advantages back in takes a bit of work (you can see an example in our fake-div-buttons.html example — also see the source code). ...
...such advantages back in takes a bit of work (you can see an example in our fake-div-buttons.html example — also see the source code). here we've given our fake <div> buttons the ability to be focused (including via tab) by giving each one the attribute tabindex="0": <div data-message="this is from the first button" tabindex="0">click me!</div> <div data-message="this is from the second button" tabindex="0">click me too!</div> <div data-message="this is from the third button" tabindex="0">and me!</div> basically, the tabindex attribute is primarily intended to allow tabbable elements to have a custom tab order (specified in positive numerical order), instead of just being tabbed through in their default source order. this is nearly always a bad idea, as it can cause major confusion. use it only...
...stom tab order (specified in positive numerical order), instead of just being tabbed through in their default source order. this is nearly always a bad idea, as it can cause major confusion. use it only if you really need to, for example, if the layout shows things in a very different visual order to the source code, and you want to make things work more logically. there are two other options for tabindex: tabindex="0" — as indicated above, this value allows elements that are not normally tabbable to become tabbable. this is the most useful value of tabindex. tabindex="-1" — this allows not normally tabbable elements to receive focus programmatically, e.g., via javascript, or as the target of links. whilst the above addition allows us to tab to the buttons, it does not allow us to activ...

How to build custom form controls - Learn web development
nism has already been implemented for the click event. defining the html structure and (some) semantics now that the control's basic functionality has been decided upon, it's time to start building it. the first step is to define its html structure and to give it some basic semantics. here is what we need to rebuild a <select> element: <!-- this is our main container for our control. the tabindex attribute is what allows the user to focus the control. we'll see later that it's better to set it through javascript. --> <div class="select" tabindex="0"> <!-- this container will be used to display the current value of the control --> <span class="value">cherry</span> <!-- this container will contain all the options available for our control. because it's a list, it makes s...
... handle event binding when the document is loaded. ...
...selectlist = document.queryselectorall('.select'); // each custom control needs to be initialized selectlist.foreach(function (select) { var optionlist = select.queryselectorall('.option'), selectedindex = getindex(select); // we make our custom control focusable select.tabindex = 0; // we make the native control no longer focusable select.previouselementsibling.tabindex = -1; // we make sure that the default selected value is correctly displayed updatevalue(select, selectedindex); // each time a user clicks on an option, we update the value accordingly optionlist.foreach(function (option, index) { option.addeventlistener('click', function (event) { updatevalue(select, index); }); }); // each time a user uses their k...
...using this property is necessary to ensure that the native control will never gain focus, and to make sure that our custom control gains focus when the user uses their keyboard or mouse. with that, we're done! here's the result: live example check out the source code but wait a second, are we really done? making it accessible we have built some...

ARIA: document role - Accessibility
generally used in complex composite widgets or applications, the document role can inform assistive technologies to switch context to a reading mode: the document role tells assistive technologies with reading or browse modes to use the document mode to read the content contained within this element. <div role="dialog"> ... <div id="infotext" role="document" tabindex="0"> <p>some informational text goes here.</p> </div> ... <button>close</button> </div> this example shows a dialog widget with some controls and a section with some informational text that the assistive technology user can read when tabbing to it. description by default, web pages are treated as documents; assistive technologies (at) enter browse or read mode when entering a new web page. this mode can be altered through...
...mplex composit widget that an assistive technology user should read using its browse or virtual reading mode, if available. because ats with reading mode default to that mode for all elements except for those with a widget or application role set, document role is only useful for focusable elements within a widget or application that should be read as static rich text. adding role="document" and tabindex="0" to the element containing the text within a widget enables the screen reader user to press the tab key to place focus on the document element and read the text with the screen reader's reading cursor. assistive technologies should switch context back to document mode, possibly intercepting from controls rewired for the parent's dynamic context, re-enabling the standard input events, such as ...
...y has a relationship to the containing composit widget. an article can have associated articles. associated wai-aria roles, states, and properties aria-expanded include with a value of true or false if the document element is collapsible, to indicate if the document is currently expanded or collapsed. other values include the default undefined which means the document is not collapsible. tabindex="0" used to make it focusable so the assistive technology user can tab to it and start reading right away. keyboard interactions the element should be made focusable by setting the tabindex="0" attribute / value pair on it. this way, the user can tab to it, reading mode is invoked automatically, and the content can be read right away. required javascript features none, except as required ...
... messages, expand or collapse them, and manipulate them. once focus returns to the message list either by activating the back button or pressing an asociated keystroke, direct application interaction mode is invoked again, and the user can move to a different conversation in the list with the arrow keys. best practices always make sure an item with the document role is focusable, by setting the tabindex attribute with a value of 0. that will also include it in the tab order. added benefits the document role is an easy way to indirectly control assistive technology behavior by unambiguously stating that this is content the user should read with standard screen reader commands. specifications specification status accessible rich internet applications (wai-aria) 1.1the defi...

ARIA: checkbox role - Accessibility
the checkbox role is used for checkable interactive controls. elements containing role="checkbox" must also include the aria-checked attribute to expose the checkbox's state to assistive technology. <span role="checkbox" aria-checked="false" tabindex="0" aria-labelledby="chk1-label"> </span> <label id="chk1-label">remember my preferences</label> the first rule of aria is if a native html element or attribute has the semantics and behavior you require, use it instead of re-purposing an element and adding aria. instead use the native html checkbox of <input type="checkbox">, which natively provides all the functionality required: <input type="checkbox" id="chk1-label"> <label for="chk1-label">remember my preferences</label> description the native html checkbox form control can only have two c...
...ontrol can only have two checked states ("checked" or "not checked"), with an indeterminate state settable via javascript. similarly, an element with role="checkbox" can expose three states through the aria-checked attribute: true, false, or mixed. since a checkbox is an interactive control, it must be focusable and keyboard accessible. if the role is applied to a non-focusable element, use the tabindex attribute to change this. the expected keyboard shortcut for activating a checkbox is the space key. the developer is required to change the value of the aria-checked attribute dynamically when the checkbox is activated. associated wai-aria roles, states, and properties aria-checked the value of aria-checked defines the state of a checkbox. this attribute has one of three possible valu...
...the aria-checked attribute dynamically when the checkbox is activated. associated wai-aria roles, states, and properties aria-checked the value of aria-checked defines the state of a checkbox. this attribute has one of three possible values: true the checkbox is checked false the checkbox is not checked mixed the checkbox is partially checked, or indeterminate tabindex="0" used to make it focusable so the assistive technology user can tab to it and start reading right away. keyboard interactions key function space activates the checkbox required javascript required event handlers onclick handle mouse clicks that will change the state of the checkbox by changing the value of the aria-checked attribute and the appearance of...
...ue of the aria-checked attribute and the appearance of the checkbox so it appears checked or unchecked to the sighted user examples the following example creates a simple checkbox element using css and javascript to handle the checked or unchecked status of the element. ...

Global attributes - HTML: Hypertext Markup Language
hecked for spelling errors; false, which indicates that the element should not be checked for spelling errors. style contains css styling declarations to be applied to the element. note that it is recommended for styles to be defined in a separate file or files. this attribute and the <style> element have mainly the purpose of allowing for quick styling, for example for testing purposes. tabindex an integer attribute indicating if the element can take input focus (is focusable), if it should participate to sequential keyboard navigation, and if so, at what position. it can take several values: a negative value means that the element should be focusable, but should not be reachable via sequential keyboard navigation; 0 means that the element should be focusable and reachable via seq...
... not be reachable via sequential keyboard navigation; 0 means that the element should be focusable and reachable via sequential keyboard navigation, but its relative order is defined by the platform convention; a positive value means that the element should be focusable and reachable via sequential keyboard navigation; the order in which the elements are focused is the increasing value of the tabindex. if several elements share the same tabindex, their relative order follows their relative positions in the document. title contains a text representing advisory information related to the element it belongs to. such information can typically, but not necessarily, be presented to the user as a tooltip. translate an enumerated attribute that is used to specify whether an element's attribu...
...in that specification. recommendation snapshot of html living standard. from html5, contextmenu, draggable, dropzone, and spellcheck have been added. html5the definition of 'global attributes' in that specification. recommendation snapshot of html living standard. from html 4.01 specification, the concept of global attributes is introduced and the dir, lang, style, id, class, tabindex, accesskey, and title are now true global attributes. xml:lang which was initially part of xhtml, is now also part of html. hidden, data-*, contenteditable, and translate have been added. html 4.01 specification recommendation there are no global attributes defined. several attributes that will become global attributes in subsequent specifications are defined on a subset of...
...<style>, and <title>. dir is supported on all elements but <applet>, <base>, <basefont>, <bdo>, <br>, <frame>, <frameset>, <iframe>, <param>, and <script>. id is supported on all elements but <base>, <head>, <html>, <meta>, <script>, <style>, and <title>. lang is supported on all elements but <applet>, <base>, <basefont>, <br>, <frame>, <frameset>, <iframe>, <param>, and <script>. tabindex is only supported on <a>, <area>, <button>, <object>, <select>, and <textarea>. accesskey is only supported on <a>, <area>, <button>, <input>, <label>, <legend> and <textarea>. title is supported on all elements but <base>, <basefont>, <head>, <html>, <meta>, <param>, <script>, and <title>. ...

button - Archive of obsolete content
be used to trap mouse, keyboard and other events. it is typically rendered as a grey outset rectangle. you can specify the label of the button using the label attribute or by placing content inside the button. more information is available in the xul tutorial. attributes accesskey, autocheck, checkstate, checked, command, crop, dir, disabled, dlgtype, group, icon, image, label, open, orient, tabindex, type properties accesskey, accessibletype, autocheck, checkstate, checked, command, crop, dir, disabled, dlgtype, group, image, label, open, orient, tabindex, type examples <button label="press me" oncommand="alert('you pressed me!');"/> attributes accesskey type: character this should be set to a character that is used as a shortcut key. this should be one of the ...
...izontally or vertically. the default value depends on the element. you can also use the -moz-box-orient style property. horizontal child elements of the element are placed next to each other in a row in the order that they appear in the xul source. vertical child elements of the element are placed under each other in a column in the order that they appear in the xul source. tabindex type: integer the tab order of the element. the tab order is the order in which the focus is moved when the user presses the "tab" key. elements with a higher tabindex are later in the tab sequence. type type: one of the values below the type of button. if this attribute is not present, a normal button is created. leave the attribute out for a normal button. checkbox this type ...
...he group attribute. image type: image url gets and sets the value of the image attribute. label type: string gets and sets the value of the label attribute. open type: boolean gets and sets the value of the open attribute. orient type: string gets and sets the value of the orient attribute. tabindex type: integer gets and sets the value of the tabindex attribute. type type: string gets and sets the value of the type attribute. methods inherited methods addeventlistener(), appendchild(), blur, click, clonenode(), comparedocumentposition, dispatchevent(), docommand, focus, getattribute(), getattributenode(), getattributenodens(), getattributens(), ...

caption - Archive of obsolete content
« xul reference home [ examples | attributes | properties | methods | related ] a header for a groupbox. it may contain either a text label, using the label attribute, or child elements for a more complex caption. more information is available in the xul tutorial. attributes accesskey, crop, image, label, tabindex properties accesskey, crop, image, label, tabindex examples <groupbox> <caption label="my groupbox"/> </groupbox> <groupbox flex="1"> <caption> <checkbox label="a checked groupbox"/> </caption> </groupbox> attributes accesskey type: character this should be set to a character that is used as a shortcut key. this should be one of the characters that appears in the label attribute for the element. ...
...lement. if this attribute is empty or left out, no image appears. the position of the image is determined by the dir and orient attributes. label type: string the label that will appear on the element. if this is left out, no text appears. for an editable menuitem element the value of this attribute is copied to the menulist.value property upon user selection of the menuitem. tabindex type: integer the tab order of the element. the tab order is the order in which the focus is moved when the user presses the "tab" key. elements with a higher tabindex are later in the tab sequence. properties accesskey type: character gets and sets the value of the accesskey attribute. crop type: string gets and sets the value of the crop attri...
... properties accesskey type: character gets and sets the value of the accesskey attribute. crop type: string gets and sets the value of the crop attribute. image type: image url gets and sets the value of the image attribute. label type: string gets and sets the value of the label attribute. tabindex type: integer gets and sets the value of the tabindex attribute. methods inherited methods addeventlistener(), appendchild(), blur, click, clonenode(), comparedocumentposition, dispatchevent(), docommand, focus, getattribute(), getattributenode(), getattributenodens(), getattributens(), getboundingclientrect(), getclientrects(), getelementsbyattribute, getelementsbyattributens,...

checkbox - Archive of obsolete content
s most commonly rendered as a box when the element is off and a box with a check when the element is on. the user can switch the state of the check box by selecting it with the mouse. a label, specified with the label attribute, may be added beside the check box. more information is available in the xul tutorial. attributes accesskey, checked, command, crop, disabled, src, label, preference, tabindex properties accesskey, accessibletype, checked, command, crop, disabled, src, label, tabindex examples <checkbox label="enable javascript" checked="true"/> <checkbox label="enable java" checked="false"/> attributes accesskey type: character this should be set to a character that is used as a shortcut key. this should be one of the characters that appears in the label attrib...
.... if this is left out, no text appears. for an editable menuitem element the value of this attribute is copied to the menulist.value property upon user selection of the menuitem. preference type: id connects the element to a corresponding preference. this attribute only has any effect when used inside a prefwindow. more information is available in the preferences system article. tabindex type: integer the tab order of the element. the tab order is the order in which the focus is moved when the user presses the "tab" key. elements with a higher tabindex are later in the tab sequence. properties accesskey type: character gets and sets the value of the accesskey attribute. accessibletype type: integer a value indicating the type...
...d sets the value of the command attribute. crop type: string gets and sets the value of the crop attribute. disabled type: boolean gets and sets the value of the disabled attribute. src type: url gets and sets the value of the src attribute. label type: string gets and sets the value of the label attribute. tabindex type: integer gets and sets the value of the tabindex attribute. methods inherited methods addeventlistener(), appendchild(), blur, click, clonenode(), comparedocumentposition, dispatchevent(), docommand, focus, getattribute(), getattributenode(), getattributenodens(), getattributens(), getboundingclientrect(), getclientrects(), getelementsbyattribute, getelementsbyattributen...

datepicker - Archive of obsolete content
of the mouse. to avoid this, you can use the workaround described here, i.e., use window.settimeout(actual-event-handler-function, 0); to queue up your event handler to run after the rest of the picker's change event handlers. a monthchange event is fired for the grid and popup datepickers whenever a new month is navigated to or displayed. attributes disabled, firstdayofweek, readonly, type, tabindex, value properties date, dateleadingzero, datevalue, disabled, month, monthleadingzero, open, readonly, tabindex, value, year, yearleadingzero examples <datepicker type="grid" value="2007-03-26"/> attributes disabled type: boolean indicates whether the element is disabled or not. if this attribute is set, the element is disabled. disabled elements are usually drawn with grayed...
...ger which day of the week to display as the first day in the grid. the values range from 0 to 6, where 0 is sunday and 6 is saturday. the default value is determined by the locale, so only use this attribute if you want to override it. readonly type: boolean if set to true, then the user cannot change the value of the element. however, the value may still be modified by a script. tabindex type: integer the tab order of the element. the tab order is the order in which the focus is moved when the user presses the "tab" key. elements with a higher tabindex are later in the tab sequence. type type: one of the values below you can set the type attribute to one of the values below to specify the type of datepicker to use normal ...
...hould be displayed before the month when it is less than 10. open type: boolean for popup type datepickers, specifies whether the popup is open. set this property to open or close the popup. for non-popup datepickers, this property is always false. readonly type: boolean if set to true, then the user cannot modify the value of the element. tabindex type: integer gets and sets the value of the tabindex attribute. value type: string the currently selected date in the form yyyy-mm-dd. unlike the month property, months in this value range from 01 to 12. set this property to change the selected date. year type: integer the currently selected year from 1 to 9999. set this property to c...

description - Archive of obsolete content
be set either with the value attribute or by placing text inside the open and close description tags. the value attribute is used to set text that appears in a single line. if text appears as a child of the description, it will wrap to multiple lines. it may contain arbitrary markup, which can be styled as needed. more information is available in the xul tutorial. attributes crop, disabled, tabindex value properties accessibletype, crop, disabled, tabindex, value style classes header, indent, monospace, plain, small-margin examples this is a long section of text that will word wrap when displayed <description> this is a long section of text that will word wrap when displayed. </description> this is a long section of text that will not word wrap <description value="this is a l...
...s allowed only for form controls. using it with an anchor tag (an <a> link) will have no effect. the element will, however, still respond to mouse events. to enable the element, leave this attribute out entirely. visible controls have a disabled property which, except for menus and menuitems, is normally preferred to use of the attribute, as it may need to update additional state. tabindex type: integer the tab order of the element. the tab order is the order in which the focus is moved when the user presses the "tab" key. elements with a higher tabindex are later in the tab sequence. value type: string the string attribute allows you to associate a data value with an element. it is not used for any specific purpose, but you can access it with a script for your own use. ...
...do not access or affect the contents displayed to the user. properties accessibletype type: integer a value indicating the type of accessibility object for the element. crop type: string gets and sets the value of the crop attribute. disabled type: boolean gets and sets the value of the disabled attribute. tabindex type: integer gets and sets the value of the tabindex attribute. value type: string gets and sets the value of the value attribute. for textbox and user editable menulist elements, the contents, as visible to the user, are read and set using the textbox.value and menulist.value syntax. methods inherited methods addeventlistener(), appendchild(), blur, click, ...

preference - Archive of obsolete content
ferences element. each preference element corresponds to a preference which is stored in the user's preferences file. you can connect a user interface element such as a checkbox to a preference element using the user interface element's preference attribute. more information is available in the preferences system article. attributes disabled, instantapply, inverted, name, onchange, readonly, tabindex, type properties defaultvalue, disabled, hasuservalue, inverted, locked, name, preferences, readonly, tabindex, type, value, valuefrompreferences methods reset examples <preferences> <preference id="pref_id" name="preference.name" type="int"/> </preferences> see preferences system for a complete example. attributes disabled type: boolean indicates whether the element is disab...
...t type="text/javascript"> function myfunction(e){ /* do something cool here or just say the below */ alert(e.target.nodename); } </script> <textbox id="find-text" onchange="return myfunction(event);"/> </window> readonly type: boolean if set to true, then the user cannot change the value of the element. however, the value may still be modified by a script. tabindex type: integer the tab order of the element. the tab order is the order in which the focus is moved when the user presses the "tab" key. elements with a higher tabindex are later in the tab sequence. type type: one of the values below the preference type which should be one of the following values. bool a boolean set to either true or false. usually a checkbox would be connected...
...s read-only. name type: string the name of the preference to change. for example, the browser's home page is set with the preference browser.startup.homepage. preferences type: element reference to the containing preferences element. readonly type: boolean if set to true, then the user cannot modify the value of the element. tabindex type: integer gets and sets the value of the tabindex attribute. type type: string gets and sets the value of the type attribute. value gets and sets the value of the user preference specified in name. in pref dialogs with instantapply == true (default on mac os x) this value is kept in sync with the actual value stored in the preferences (see valuefrom...

scale - Archive of obsolete content
nt the value by one unit, or the page up and page down keys to increment and decrement the value by one page, as specified by the pageincrement attribute. the home and end keys set the scale's value to the minimum and maximum values, respectively. a scale will fire a change event whenever the scale's value is modified. attributes dir, disabled, increment, max, min, movetoclick, pageincrement, tabindex, value properties disabled, max, min, increment, pageincrement, tabindex, value, methods decrease, decreasepage, increase, increasepage, examples horizontal scale: <scale min="1" max="10"/> vertical scale: <scale min="1" max="10" orient="vertical"/> attributes dir type: one of the values below the direction in which the child elements of the element are placed. n...
...mb only one increment in that direction. if not specified, the default value is used, which varies for each platform. pageincrement type: integer the amount by which the value of the curpos or value attribute changes when the tray of the scroll bar (the area in which the scroll bar thumb moves) is clicked, or when the page up or page down keys are pressed. the default value is 10. tabindex type: integer the tab order of the element. the tab order is the order in which the focus is moved when the user presses the "tab" key. elements with a higher tabindex are later in the tab sequence. value type: string the string attribute allows you to associate a data value with an element. it is not used for any specific purpose, but you can access it with a script for your own use. ...
...ute. increment type: integer gets and sets the value of the increment attribute. min type: integer gets and sets the value of the min attribute. max type: integer gets and sets the value of the max attribute. pageincrement type: integer gets and sets the value of the pageincrement attribute. tabindex type: integer gets and sets the value of the tabindex attribute. value type: string gets and sets the value of the value attribute. for textbox and user editable menulist elements, the contents, as visible to the user, are read and set using the textbox.value and menulist.value syntax. methods inherited methods addeventlistener(), appendchild(), blur, click, ...

tab - Archive of obsolete content
properties | methods | related ] a single tab which should be placed inside a tabs element. the user may click a tab to bring the associated page of the tabbox to the front. more information is available in the xul tutorial. attributes accesskey, afterselected, beforeselected, command, crop, disabled, first-tab, image, label, last-tab, linkedpanel, oncommand, pending, pinned, selected, tabindex, unread, validate, value properties accesskey, accessibletype, command, control, crop, disabled, image, label, linkedpanel, selected, tabindex, value examples (example needed) attributes accesskey type: character this should be set to a character that is used as a shortcut key. this should be one of the characters that appears in the label attribute for the element. ...
...bs until selected" preference, the pending attribute is set on tabs until they get loaded. pinned type: boolean this attribute is set to true if the tab has been pinned (that is, if it's an app tab). the tabbrowser element's pintab and unpintab methods handle pinning and unpinning tabs. selected type: boolean this attribute is set to true if the tab is selected by default. tabindex type: integer the tab order of the element. the tab order is the order in which the focus is moved when the user presses the "tab" key. elements with a higher tabindex are later in the tab sequence. unread type: boolean this attribute is set to true if the tab is unread; that is, either it has not yet been selected during the current session, or has changed since the last time it was ...
...ets and sets the value of the label attribute. linkedpanel type: id of a tabpanel element gets and sets the value of the linkedpanel attribute. selected type: boolean this property's value is true if this element is selected, or false if it is not. this property is read only. this property is available for menuitem and menuseparator elements in firefox 3. tabindex type: integer gets and sets the value of the tabindex attribute. value type: string gets and sets the value of the value attribute. for textbox and user editable menulist elements, the contents, as visible to the user, are read and set using the textbox.value and menulist.value syntax. methods inherited methods addeventlistener(), appendchild(), blur, click, ...

timepicker - Archive of obsolete content
9219, a change event handler may encounter erratic behavior when the time is changed using the keyboard instead of the mouse. to avoid this, you can use the workaround described here, i.e., use window.settimeout(actual-event-handler-function, 0); to queue up your event handler to run after the rest of the picker's change event handlers. attributes disabled, hideseconds, increment, readonly, tabindex, value properties amindicator, datevalue, disabled, hideseconds, hour, hourleadingzero, increment, is24hourclock, ispm, minute, minuteleadingzero, pmindicator, readonly, second, secondleadingzero, tabindex, value examples <timepicker value="12:05"/> attributes disabled type: boolean indicates whether the element is disabled or not. if this attribute is set, the elem...
...ndicates whether to show the seconds field. readonly type: boolean if set to true, then the user cannot change the value of the element. however, the value may still be modified by a script. increment type: integer indicates the number of minutes to skip each time the arrows are pressed. this should be used in combination with setting hideseconds to true. tabindex type: integer the tab order of the element. the tab order is the order in which the focus is moved when the user presses the "tab" key. elements with a higher tabindex are later in the tab sequence. value type: string the initial value of the timepicker in either the form hh:mm:ss or hh:mm. properties amindicator type: string the string valu...
...ean if set to true, then the user cannot modify the value of the element. second type: integer the currently selected second from 0 to 59. set this property to change the selected second. secondleadingzero type: boolean a read only value indicating whether a leading zero should be displayed before the second when it is less than 10. tabindex type: integer gets and sets the value of the tabindex attribute. value type: string the currently entered time of the form hh:mm:ss. set this property to change the time. methods inherited methods addeventlistener(), appendchild(), blur, click, clonenode(), comparedocumentposition, dispatchevent(), docommand, focus, getattribute(), getattributenode(), ...

HTMLTextAreaElement - Web APIs
ment, and selectionstart as the first argument. selectionstart unsigned long: returns / sets the index of the beginning of selected text. if no text is selected, contains the index of the character that follows the input cursor. on being set, the control behaves as if setselectionrange() had been called with this as the first argument, and selectionend as the second argument. tabindex long: returns / sets the position of the element in the tabbing navigation order for the current document. textlength read only long: returns the codepoint length of the control's value. same as reading value.length type read only string: returns the string textarea. validationmessage read only string: returns a localized message that describes the valida...
...ate for constraint validation. false if any conditions bar it from constraint validation, including its readonly or disabled property is true. wrap string: returns / sets the wrap html attribute, indicating how the control wraps text. htmltextareaelement.labelsread only nodelist: returns a list of label elements associated with this element. the two properties tabindex and accesskey are inherited from htmlelement from html5 on, but were defined on htmltextareaelement in dom level 2 html and earlier specifications. methods blur() removes focus from the control; keystrokes will subsequently go nowhere. focus() gives focus to the control; keystrokes will subsequently go to this element. select() selects the contents of the con...
...press="return checkrows(this, event);" onpaste="return false;"></textarea> </p> </form> specifications specification status comment html living standardthe definition of 'htmltextareaelement' in that specification. living standard html5the definition of 'htmltextareaelement' in that specification. recommendation the attributes tabindex and accesskey, as well as the methods blur() and focus() are now defined on htmlelement. the following attributes have been added: autofocus, placeholder, dirname, wrap, maxlength, required, textlength, labels, selectionstart, selectionend, selectiondirection, validity, validationmessage, and willvalidate. the following methods have been added: checkvalidity(), setcustomvalidity(), and se...

Using the link role - Accessibility
tab can be used to change focus to the link, and enter used to execute the link. note: where possible, it is recommended that you use a native <a> element rather than the link role, as native elements are more widely supported by older user agents and assistive technology. native <a> elements also support keyboard and focus requirements by default, without need for additional customization. the tabindex attribute may optionally be used with this role to directly specify the position of the element in the tab order. possible effects on user agents and assistive technology when the link role is added to an element, or such an element becomes visible, the user agent should do the following: expose the element as having a link role in the operating system's accessibility api. fire an accessib...
... technology should handle this technique. the information provided above is one of those opinions and therefore not normative. examples this example shows how to implement a fake link using a <span> element. this includes javascript to grab the location and handle navigating to the new location using window.open() via clicking, and using keyboard, css to give the desired visuals of a link, the tabindex="0" attribute to make it keyboard-focussable, and role="link" to make it recognised as a link by assistive technology. this is a huge amount of work just to recreate something you've get for free using the <a> element, so you should really use that if possible. but this shows that it can be done. you should however note that there are still problems with this approach: it is very difficult t...
... has been visited before, and therefore use :visited styles (e.g. the default purple color for visited links). opening a page using the open() method counts as being a popup, and certain browsers may issue a warning when you try to activate it, or make you explicitly agree to allowing popups form the domain it exists on. ...

Using the radio role - Accessibility
nts and assistive technology note: opinons may differ on how assistive technology should handle this technique. the information provided above is one of those opinions and therefore not normative. examples example 1: example from the basic form hints mdn page. ...
...ided above is one of those opinions and therefore not normative. examples example 1: example from the basic form hints mdn page. ...
...3 id="rg1_label">lunch options</h3> <ul class="radiogroup" id="rg1" role="radiogroup" aria-labelledby="rg1_label"> <li id="r1" tabindex="-1" role="radio" aria-checked="false"> <img role="presentation" src="radio-unchecked.gif" /> thai </li> <li id="r2" tabindex="-1" role="radio" aria-checked="false"> <img role="presentation" src="radio-unchecked.gif" /> subway </li> <li id="r3" tabindex="0" role="radio" aria-checked="true"> <img role="presentation" src="radio-checked.gif" /> radio maria </li> </ul> working examples: notes aria attributes used related aria techniques compatibility tbd: add support information for common ua and at product combinations additional resources ...

<button>: The Button element - HTML: Hypertext Markup Language
criterion 1.4.3 | w3c understanding wcag 2.0 clicking and focus whether clicking on a <button> causes it to (by default) become focused varies by browser and os. the results for <input> of type="button" and type="submit" are the same. ...
...efault) become focused varies by browser and os. the results for <input> of type="button" and type="submit" are the same. ...
...x 63 chrome yes - chrome 35 yes - chrome 65 safari n/a no (even with a tabindex) safari 12 (bug 22261) internet explorer yes - internet explorer 11 n/a presto yes - opera 12 yes - opera 12 does tapping on a <button> give it focus? mobile browsers ios 7.1.2 android 4.4.4 safari mobile no (even with a tabindex) n/a chrome 35 no (even with a tabindex) yes specifications specification status comment html living standardthe definition of '<button>' in that specification. living standard html5the definition of '<button>' in that specification. recommendation html 4.01 specificationthe definition of '<button>' in that spec...

Index - Archive of obsolete content
style xul attributes, xul reference no summary! 1084 subject xul attributes, xul reference no summary! 1085 substate xul attributes, xul reference no summary! 1086 suppressonselect xul attributes, xul reference no summary! 1087 tab.selected xul, xul attributes, xul reference no summary! 1088 tabindex xul attributes, xul reference no summary! 1089 tabmodalpromptshowing xul, xul methods, xul reference no summary! 1090 tabs.onselect xul attributes, xul reference no summary! 1091 tabscrolling xul attributes, xul reference no summary! 1092 targets xul attributes, xul reference no summary! 1093 ...
... style xul properties, xul reference no summary! 1577 subject xul properties, xul reference no summary! 1578 suppressonselect xul properties, xul reference no summary! 1579 tab.control xul properties, xul reference no summary! 1580 tabcontainer xul properties, xul reference no summary! 1581 tabindex xul properties, xul reference no summary! 1582 tabscrolling xul properties, xul reference no summary! 1583 tabbox xul, xul properties, xul reference no summary! 1584 tabbox.tabs xul properties, xul reference no summary! 1585 tabbrowser.tabs xul, xul properties, xul reference no summary! 1586 t...

Index - Archive of obsolete content
52 style xul attributes, xul reference no summary! 353 subject xul attributes, xul reference no summary! 354 substate xul attributes, xul reference no summary! 355 suppressonselect xul attributes, xul reference no summary! 356 tab.selected xul, xul attributes, xul reference no summary! 357 tabindex xul attributes, xul reference no summary! 358 tabmodalpromptshowing xul, xul methods, xul reference no summary! 359 tabs.onselect xul attributes, xul reference no summary! 360 tabscrolling xul attributes, xul reference no summary! 361 targets xul attributes, xul reference no summary! 362 templ...
... 845 style xul properties, xul reference no summary! 846 subject xul properties, xul reference no summary! 847 suppressonselect xul properties, xul reference no summary! 848 tab.control xul properties, xul reference no summary! 849 tabcontainer xul properties, xul reference no summary! 850 tabindex xul properties, xul reference no summary! 851 tabscrolling xul properties, xul reference no summary! 852 tabbox xul, xul properties, xul reference no summary! 853 tabbox.tabs xul properties, xul reference no summary! 854 tabbrowser.tabs xul, xul properties, xul reference no summary! 855 tabpan...

Focus and Selection - Archive of obsolete content
y one element per window has the focus at a time. the user can change the focus by clicking an element with the mouse or by pressing the tab key. when the tab key is pressed, the next element is given the focus. to step backwards, the shift key and tab key can be pressed. rearranging the tab order you can change the order in which elements are focused when the user presses the tab key by adding a tabindex attribute to an element. this attribute should be set to a number. when the user presses tab, the focus will shift to the element with the next highest tab index. that means that you can order the elements by setting indices on elements in sequence. usually, however, you would not set the tabindex attribute. if you do not, pressing tab will set the focus to the next displayed element. you only ne...
...t with the next highest tab index. that means that you can order the elements by setting indices on elements in sequence. usually, however, you would not set the tabindex attribute. if you do not, pressing tab will set the focus to the next displayed element. you only need to set tab indices if you wish to use a different order. here is an example: example 1 : source view <button label="button 1" tabindex="2"/> <button label="button 2" tabindex="1"/> <button label="button 3" tabindex="3"/> the focus event the focus event is used to respond when the focus is given to an element. the blur event is used to respond when the focus is removed from an element. you can respond to focus changes by adding an onfocus or onblur attribute on an element. they work just like their html counterparts. you might u...

menu - Archive of obsolete content
ties | methods | related ] an element, much like a button, that is placed on a menubar. when the user clicks the menu element, the child menupopup of the menu will be displayed. this element is also used to create submenus. more information is available in the xul tutorial. ...
...ayed. this element is also used to create submenus. more information is available in the xul tutorial. ...

CSS and JavaScript accessibility best practices - Learn web development
img; the first two lines run the functions when the mouse pointer hovers over and stops hovering over the thumbnail, respectively. this won't allow us to access the zoomed view by keyboard though — to allow that, we've included the last two lines, which run the functions when the image is focused and blurred (when focus stops). ...
...mage, because we've included tabindex="0" on it. the click event is interesting — it sounds mouse-dependent, but most browsers will activate onclick event handlers after enter/return is pressed on a link or form element that has focus, or when such an element is tapped on a touchscreen device. this doesn't work by default however when you allow a non-default-focusable event to have focus using tabindex — in such cases you need to detect specifically when that exact key is pressed (see building keyboard accessibility back in). test your skills! you've reached the end of this article, but can you remember the most important information? you can find some further tests to verify that you've retained this information before you move on — see test your skills: css and javascript accessibility.

Example 3 - Learn web development
this is the third example that explain how to build custom form widgets. ...
... this is the third example that explain how to build custom form widgets. ...

Focus management with Vue refs - Learn web development
need a way to provide assistive technology users with information that confirms that an element was deleted. we're already tracking the number of elements in our list heading — the <h2> in app.vue — and it's associated with our list of to-do items. this makes it a reasonable place to move focus to when we delete a node. first, we need to add a ref to our list heading. we also need to add a tabindex="-1" to it — this makes the element programmatically focusable (i.e. it can be focused via javascript), when by default it is not. inside app.vue, update your <h2> as follows: <h2 id="list-summary" ref="listsummary" tabindex="-1">{{listsummary}}</h2> note: tabindex is a really powerful tool for handling certian accessibility problems. however, it should be used with caution. over-using tab...
...this can be confusing to users, especially those using screen readers and other assistive technology. ...

HTMLAnchorElement - Web APIs
ing that reflects the rel html attribute, specifying the relationship of the target object to the linked object. htmlanchorelement.rellist read only returns a domtokenlist that reflects the rel html attribute, as a list of tokens. htmlhyperlinkelementutils.search is a usvstring representing the search element, including leading question mark ('?'), if any, of the referenced url. htmlelement.tabindex is a long containing the position of the element in the tabbing navigation order for the current document. htmlanchorelement.target is a domstring that reflects the target html attribute, indicating where to display the linked resource. htmlanchorelement.text is a domstring being a synonym for the node.textcontent property. htmlanchorelement.type is a domstring that reflects the type html ...
...operty has been added: download. technically, the url-related properties, media, host, hostname, pathname, port, protocol, search, and hash, have been moved to the htmlhyperlinkelementutils mixin, and htmlanchorelement implements this mixin. html5the definition of 'htmlanchorelement' in that specification. recommendation the methods blur() and focus(), as well as the properties tabindex and accesskey, are now defined on htmlelement. the following properties are now obsolete: charset, coords, name, rev, and shape. the following properties have been added: hash, host, hostname, media, pathname, port, protocol, rellist, search, and text. document object model (dom) level 2 html specificationthe definition of 'htmlanchorelement' in that specification. obsolete ...

HTMLAreaElement - Web APIs
indicating relationships of the current document to the linked resource, as a list of tokens. htmlhyperlinkelementutils.search is a usvstring containing the search element (including leading question mark '?'), if any, of the referenced url. htmlareaelement.shape is a domstring that reflects the shape html attribute, indicating the shape of the hot-spot, limited to known values. htmlelement.tabindex is a long containing the element's position in the tabbing order. htmlareaelement.target is a domstring that reflects the target html attribute, indicating the browsing context in which to open the linked resource. htmlareaelement.type is a domstring that reflects the type html attribute, indicating the mime type of the linked resource. htmlhyperlinkelementutils.username is a usvstring con...
...ving standard the following property has been added: download. technically, the url-related properties, media, host, hostname, pathname, port, protocol, search, and hash, have been moving to the htmlhyperlinkelementutils mixin, and htmlareaelement implements this mixin. html5the definition of 'htmlareaelement' in that specification. recommendation technically, the properties tabindex and accesskey are now defined on htmlelement. the following property is now obsolete: nohref. the following properties have been added: rel, rellist, media, hreflang, type, host, hostname, pathname, port, protocol, search, and hash. document object model (dom) level 2 html specificationthe definition of 'htmlareaelement' in that specification. obsolete no change from docume...

HTMLButtonElement - Web APIs
elist that represents a list of <label> elements that are labels for this button. htmlbuttonelement.menu is a htmlmenuelement representing the menu element to be displayed if the button is clicked and is of type="menu". htmlbuttonelement.name is a domstring representing the name of the object when submitted with a form. html5 if specified, it must not be the empty string. htmlbuttonelement.tabindex is a long that represents this element's position in the tabbing order. htmlbuttonelement.type is a domstring indicating the behavior of the button. this is an enumerated attribute with the following possible values: submit: the button submits the form. this is the default value if the attribute is not specified, html5 or if it is dynamically changed to an empty or invalid value. reset: ...
...ation. recommendation the menu attribute and type="menu" value have been removed. html 5.1the definition of 'htmlbuttonelement' in that specification. recommendation the following attribute has been added: menu. the type attribute can take one more value, "menu". html5the definition of 'htmlbuttonelement' in that specification. recommendation the attributes tabindex and accesskey, are now defined on htmlelement. the following attributes have been added: autofocus, formaction, formenctype, formmethod, formnovalidate, formtarget, labels, validity, validationmessage, and willvalidate. the following methods have been added: checkvalidity(), setcustomvalidity(). the type attribute is no more read-only. document object model (dom) level 2 html...

HTMLElement - Web APIs
ment, relative to the layout. htmlelement.properties read only returns a htmlpropertiescollection… htmlelement.spellcheck is a boolean that controls spell-checking. it is present on all html elements, though it doesn't have an effect on all of them. htmlelement.style is a cssstyledeclaration, an object representing the declarations of an element's style attributes. htmlorforeignelement.tabindex is a long representing the position of the element in the tabbing order. htmlelement.title is a domstring containing the text that appears in a popup box when mouse is over the element. htmlelement.translate is a boolean representing the translation. event handlers most event handler properties, of the form onxyz, are defined on the documentandelementeventhandlers, globaleventhandlers o...
...following properties: translate, itemscope, itemtype, itemid, itemref, itemprop, properties, and itemvalue. added the following method: forcespellcheck(). moved the onxyz attributes to the globaleventhandlers interface and added an inheritance from it. html5the definition of 'htmlelement' in that specification. recommendation added the following properties: dataset, hidden, tabindex, accesskey, accesskeylabel, draggable, dropzone, contenteditable, iscontenteditable, contextmenu, spellcheck, commandtype, commandlabel, commandicon, commandhidden, commanddisabled, commandchecked, style, and all the onxyz properties. moved the id and classname properties to the element interface. document object model (dom) level 2 html specificationthe definition of 'htmlelement' i...

HTMLObjectElement - Web APIs
xels. htmlobjectelement.hspace is a long representing the horizontal space in pixels around the control. htmlobjectelement.name returns a domstring that reflects the name html attribute, specifying the name of the browsing context. htmlobjectelement.standby is a domstring that reflects the standby html attribute, specifying a message to display while the object loads. htmlobjectelement.tabindex is a long representing the position of the element in the tabbing navigation order for the current document. htmlobjectelement.type is a domstring that reflects the type html attribute, specifying the mime type of the resource. htmlobjectelement.typemustmatch is a boolean that reflects the typemustmatch html attribute, indicating if the resource specified by data must only be played if it ma...
...oes not validate. specifications specification status comment html living standardthe definition of 'htmlobjectelement' in that specification. living standard html5the definition of 'htmlobjectelement' in that specification. recommendation the w3c specification is a latest of a previous version of html living standard technically, the property tabindex is now defined on htmlelement. the following properties are now obsolete: align, archive, border, code, codebase, codetype, declare, hspace, standby, and vspace. the following properties have been added: typemustmatch, contentwindow, willvalidate, validity, and validationmessage. the following methods have been added: checkvalidity() and setcustomvalidity(). document object m...

Basic form hints - Accessibility
for these cases. the example below shows a radio button group implemented using an unordered list. note that on line 3, the <ul> element sets the aria-labelledby attribute to rg1_label, the id of the <h3> element on line 1, which is the label for the radio group. ...
...nt sets the aria-labelledby attribute to rg1_label, the id of the <h3> element on line 1, which is the label for the radio group. <h3 id="rg1_label">lunch options</h3> <ul class="radiogroup" id="rg1" role="radiogroup" aria-labelledby="rg1_label"> <li id="r1" tabindex="-1" role="radio" aria-checked="false"> <img role="presentation" src="radio-unchecked.gif" /> thai </li> <li id="r2" tabindex="-1" role="radio" aria-checked="false"> <img role="presentation" src="radio-unchecked.gif" /> subway </li> <li id="r3" tabindex="0" role="radio" aria-checked="true"> <img role="presentation" src="radio-checked.gif" /> radio maria </li> </ul> describing with aria form controls sometimes have a description associated with them, in addition to the label. aria provides the aria-de...

::after (:after) - CSS: Cascading Style Sheets
#5bc8f7; } .ribbon::after { content: "this is a fancy orange box."; background-color: #ffba10; border-color: black; border-style: dotted; } result tooltips this example uses ::after, in conjunction with the attr() css expression and a data-descr custom data attribute, to create tooltips. ...
...rt keyboard users with this technique, by adding a tabindex of 0 to make each span keyboard focusable, and using a css :focus selector. this shows how flexible ::before and ::after can be, though for the most accessible experience a semantic disclosure widget created in some other way (such as with details and summary elements) is likely to be more appropriate. html <p>here we have some <span tabindex="0" data-descr="collection of words and punctuation">text</span> with a few <span tabindex="0" data-descr="small popups that appear when hovering">tooltips</span>. </p> css span[data-descr] { position: relative; text-decoration: underline; color: #00f; cursor: help; } span[data-descr]:hover::after, span[data-descr]:focus::after { content: attr(data-descr); position: absolute; ...

SVG Core Attributes - SVG: Scalable Vector Graphics
its purpose is to identify the element when linking (using a fragment identifier), scripting, or styling (with css). value: any valid id string; animatable: no lang participates in defining the language of the element, the language that non-editable elements are written in or the language that editable elements should be written in. ...
...at non-editable elements are written in or the language that editable elements should be written in. the tag contains one single entry value in the format defined in the tags for identifying languages (bcp47) ietf document. svg 2 introduce the new lang attributes. if both lang and xml:lang attribute are used, xml:lang has priority over lang. value: any valid language id; animatable: no tabindex the tabindex svg attribute allows you to control whether an element is focusable and to define the relative order of the element for the purposes of sequential focus navigation. value type: <integer>; animatable: no xml:base specifies a base iri other than the base iri of the document. value type: <iri>; animatable: no xml:lang it is a universal attribute allowed in all xml dialects to m...

SVG Attribute reference - SVG: Scalable Vector Graphics
d shape-rendering slope spacing specularconstant specularexponent speed spreadmethod startoffset stddeviation stemh stemv stitchtiles stop-color stop-opacity strikethrough-position strikethrough-thickness string stroke stroke-dasharray stroke-dashoffset stroke-linecap stroke-linejoin stroke-miterlimit stroke-opacity stroke-width style surfacescale systemlanguage t tabindex tablevalues target targetx targety text-anchor text-decoration text-rendering textlength to transform transform-origin type u u1 u2 underline-position underline-thickness unicode unicode-bidi unicode-range units-per-em v v-alphabetic v-hanging v-ideographic v-mathematical values vector-effect version vert-adv-y vert-origin-x vert-origin-y viewbox viewtarget...
... xlink attributes xlink:href, xlink:type, xlink:role, xlink:arcrole, xlink:title, xlink:show, xlink:actuate presentation attributes note that all svg presentation attributes can be used as css properties. alignment-...

SVG 2 support in Mozilla - SVG: Scalable Vector Graphics
never implemented svgelement.viewportelement and svgelement.ownersvgelement nullable implementation status unknown svgelement.getpresentationattribute() removed never implemented (prototype removed in bug 921456) svgcolor and svgicccolor removed never implemented svgelement.focus(), svgelement.blur() not implemented (bug 778654) svgelement.tabindex implemented (bug 778654) document.activeelement implementation status unknown globaleventhandlers on svgelement implementation status unknown options dictionary attribute for svggraphicselement.getbbox() implemented behind the preference svg.new-getbbox.enabled (bug 999964, bug 1019326) allow leading and trailing whitespace in <length>, <angle>, <nu...
... <hatchpath> (renamed hatchpath) not implemented (bug 1239147) display behavior of paint server elements defined by ua style sheet not implemented clipping, masking, and compositing change notes overflow respected on outermost <svg> elements inline in html implementation status unknown interactivity change notes tabindex attribute implemented (bug 778654) bounding-box on pointer-events not implemented (bug 945187) load, abort, error, and unload instead of svgload, svgabort, svgerror, and svgunload not implemented (bug 620002) only structurally external elements and outermost <svg> element fire load events implementation status unknown resize and scroll instead of sv...

Adding windows and dialogs - Archive of obsolete content
press moves you to the next control in the window, giving it focus. in general, there's nothing you need to do in order to have good keyboard focus management. firefox will automatically focus the first input control in your window, and tab focus advances in the order the items are found in the xul document. if you have a very complex layout, or need customized tabbing behavior, you can set the tabindex attribute in the controls. you can also use the focus function to focus an element depending on events such as window load. you should do this carefully, to avoid having inaccessible controls. you can also use the -moz-user-focus css property to enable focusing of elements that typically wouldn't receive focus. again, this should be used sparingly. « previousnext » this tutorial was ki...

jspage - Archive of obsolete content
faultvalue:"defaultvalue",text:(browser.engine.trident||(browser.engine.webkit&&browser.engine.version<420))?"innertext":"textcontent"}; var b=["compact","nowrap","ismap","declare","noshade","checked","disabled","readonly","multiple","selected","noresize","defer"];var k=["value","type","defaultvalue","accesskey","cellpadding","cellspacing","colspan","frameborder","maxlength","readonly","rowspan","tabindex","usemap"]; b=b.associate(b);hash.extend(e,b);hash.extend(e,k.associate(k.map(string.tolowercase)));var a={before:function(m,l){if(l.parentnode){l.parentnode.insertbefore(m,l); }},after:function(m,l){if(!l.parentnode){return;}var n=l.nextsibling;(n)?l.parentnode.insertbefore(m,n):l.parentnode.appendchild(m);},bottom:function(m,l){l.appendchild(m); },top:function(m,l){var n=l.firstchild;(n)?l.inse...

Anonymous Content - Archive of obsolete content
focus events are both stopped. as far as the bound element is concerned, it retains focus throughout the two events. anonymous content can receive focus when the user tabs through the document. the same rules apply. if the anonymous content is focusable, it can be tabbed into, but if the bound element is not focusable, the event will be stopped before it reaches the bound element. in html4 the tabindex attribute can be used to specify the tab order for focusable elements. this attribute can be specified on anonymous content. each scope has a unique tab order. the tabindex values used in one scope are ignored by other scopes. as an example, consider the html file upload control. it is a focusable element that in turn is made up of two focusable anonymous elements: a textfield and a button. tab ...

Attribute (XUL) - Archive of obsolete content
lement resizeafter resizebefore rows screenx screeny searchbutton searchsessions searchlabel selected selectedindex seltype setfocus showcaret showcommentcolumn showpopup size sizemode sizetopopup smoothscroll sort sortactive sortdirection sortresource sortresource2 spellcheck src state statedatasource statusbar statustext style subject substate suppressonselect tabindex tabscrolling targets template timeout title toolbarname tooltip tooltiptext tooltiptextnew top type uri useraction validate value var visuallyselected wait-cursor width windowtype wrap wraparound ...

Building accessible custom components in XUL - Archive of obsolete content
ces and assign the appropriate role attributes, and firefox handles exposing the elements properly to the underlying assistive technology. further reading table of supported roles and states in firefox focus issues download stage-3.zip install stage-3.xpi the next step on the road to an accessible spreadsheet is the focus problem. in html documents, you can make any element focusable with the tabindex attribute. in xul, there is no tabindex attribute; to make a xul element focusable, you need to use a mozilla-specific css property, -moz-user-focus: normal. <code> grid.spreadsheet { border: thin solid; -moz-user-focus: normal; } </code> in html documents, firefox draws a focus rectangle around the currently focused element. in xul, we will need to handle this ourselves, again with css rules...

Property - Archive of obsolete content
rityui selected selectedbrowser selectedcount selectedindex selecteditem selecteditems selectedpanel selectedtab selectionend selectionstart selstyle seltype sessioncount sessionhistory showcommentcolumn showpopup size smoothscroll spinbuttons src state statusbar statustext stringbundle strings style subject suppressonselect tabcontainer tabindex tabs tabscrolling tabpanels tag textlength textvalue timeout title toolbarname toolbarset tooltip tooltiptext top treeboxobject type uri useraction value valuenumber view webbrowserefind webnavigation webprogress width wizardpages wraparound year yearleadingzero related dom element properties dom:element.attributes dom:element.baseuri ...

XUL Changes for Firefox 1.5 - Archive of obsolete content
rmation, see preferences system. bfcache mozilla now caches the page's dom, so that navigating back and forward does not reload the page, making navigation much more efficient. the pageshow and pagehide events are used when switching from a page in the cache, while the load and unload events are used only when the page is loaded or unloaded. for more information see using firefox 1.5 caching. tabindex the tabindex property is now applied to most elements. <radiogroup> setting the value property on the <radiogroup> element selects the <radio> element in the group with the corresponding value. dialog: defaultbutton property the <dialog> binding now supports the defaultbutton property. setting this property changes the default button of the dialog. it can be set either to one of the buttons ...

XUL accessibility guidelines - Archive of obsolete content
se with physical disabilities rely on the keyboard as their primary input tool. these users require easy, predictable, and well-documented keyboard control. tab order provide a logical tab order and ensure that users can navigate all content using a keyboard. by default, the tab order is determined by the order of the elements in the underlying code. it can also be set programmatically with the tabindex attribute if needed, but this should be done sparingly and thoroughly tested whenever it is used. the navigation order should be logical, generally left to right, top to bottom. navigation order may vary depending on the nature of the application or the reading direction of the language. ensure that tab order is logical and all interactive elements can be accessed simply without the use of a mou...

Mozilla XForms User Interface - Archive of obsolete content
e user interface presentation in a form. appearance - the value provided by the form author gives a hint to the processor as to which widget to use to represent the xforms control. three possible values are available to the author: minimal, compact and full. generally speaking, the main purpose for these values is to reflect how much space (screen real estate) the displayed widget will take. tabindex - defines the keyboard navigation sequence between controls. accesskey - keyboard shortcut for moving focus to an xforms element. binding attributes single-node (see the spec) and node-set (see the spec) attributes are used to bind xforms elements to instance nodes. these attributes are: ref, nodeset, model and bind. xforms elements almost every xforms element can be presented as one of server...

What HTML features promote accessibility? - Learn web development
the following content describes specific features of html that can be used to make a web page more accessible to people with different disabilities. tabbing users who do not or cannot use pointing devices can tab through links and, as such, links should be in a logical tabbing order. the tabindex attribute allows you to define this order. if the html is linear, as it should be, a logical tabbing order should automatically fall into place. <ul> <li><a href="here.html" tabindex="1">here</a></li> <li><a href="there.html" tabindex="3">there</a></li> <li><a href="anywhere.html" tabindex="2">anywhere</a></li> </ul> in this example (which is used purely as a demonstration—do not do this), tabbing would jump from “here” to “anywhere” to “there”. link titles if you have a link ...

Example 4 - Learn web development
eselect(select, selectlist); }); select.addeventlistener('blur', function (event) { deactivateselect(select); }); }); }); window.addeventlistener('load', function () { var selectlist = document.queryselectorall('.select'); selectlist.foreach(function (select) { var optionlist = select.queryselectorall('.option'), selectedindex = getindex(select); select.tabindex = 0; select.previouselementsibling.tabindex = -1; updatevalue(select, selectedindex); optionlist.foreach(function (option, index) { option.addeventlistener('click', function (event) { updatevalue(select, index); }); }); select.addeventlistener('keyup', function (event) { var length = optionlist.length, index = getindex(select); if...

Example 5 - Learn web development
("load", function () { var form = document.queryselector('form'); form.classlist.remove("no-widget"); form.classlist.add("widget"); }); window.addeventlistener('load', function () { var selectlist = document.queryselectorall('.select'); selectlist.foreach(function (select) { var optionlist = select.queryselectorall('.option'), selectedindex = getindex(select); select.tabindex = 0; select.previouselementsibling.tabindex = -1; updatevalue(select, selectedindex); optionlist.foreach(function (option, index) { option.addeventlistener('mouseover', function () { highlightoption(select, option); }); option.addeventlistener('click', function (event) { updatevalue(select, index); }); }); select.addeventlistener('cl...

TypeScript support in Svelte - Learn web development
e of the <script> section with the following: import type { todotype } from '../types/todo.type' export let todos: todotype[] we will also specify the headingel, which we used to bind to the heading tag, as an htmlelement. update the let headingel line with the following: let headingel: htmlelement finally, you'll notice the following error reported, related to where we set the tabindex attribute. that's because typescript is type-checking the <h2> element and expects tabindex to be of type number. to fix it, replace tabindex="-1" with tabindex={-1}, like this: <h2 id="list-heading" bind:this={headingel} tabindex={-1}>{completedtodos} out of {totaltodos} items completed</h2> this way typescript can prevent us from incorrectly assigning it to a string variable. n...

Advanced Svelte: Reactivity, lifecycle, accessibility - Learn web development
headingel.focus(). update the contents of todosstatus.svelte like so: <script> export let todos $: totaltodos = todos.length $: completedtodos = todos.filter(todo => todo.completed).length let headingel export function focus() { // shorter version: export const focus = () => headingel.focus() headingel.focus() } </script> <h2 id="list-heading" bind:this={headingel} tabindex="-1">{completedtodos} out of {totaltodos} items completed</h2> note that we've added a tabindex attribute to the <h2> to allow the element to receive focus programmatically. as we saw earlier, using the bind:this={headingel} directive gives us a reference to the dom node in the variable headingel. then we use export function focus() to expose a function that gives focus to the <h2> heading.

Handling common accessibility problems - Learn web development
d when you press certain keys on the keyboard. see desktop mouse and keyboard controls for some game-related examples that can be adapted for any purpose. use some interesting tactics to fake button behaviour. take for example our fake-div-buttons.html example (see source code). here we've given our fake <div> buttons the ability to be focused (including via tab) by giving each one the attribute tabindex="0" (see webaim's tabindex article for more really useful details). this allows us to tab to the buttons, but not to activate them via the enter/return key. to do that, we had to add the following bit of javascript trickery: document.onkeydown = function(e) { if(e.keycode === 13) { // the enter/return key document.activeelement.onclick(e); } }; here we add a listener to the document o...

Accessibility API cross-reference
echniques available n/a n/a aria-flowto indicates the availability and type of interactive popup element, such as menu or dialog, that can be triggered by an element. supported for anything that's not a menu is poor n/a n/a aria-haspopup the item can get the keyboard focus focusable focusable focusable tabindex attribute with value of 0 or more the item has focus for text input. for other kinds of keyboard operation, e.g. ui controls, see armed focused focused focused available to javascript as document.activeelement appearance has changed for mouseover hottracked n/a n/a especially used for sliders, scrollbars, ...

Mozilla’s UAAG evaluation report
able): available through dom, can be styled using css? html: colgroup element (table): available through dom, can be styled using css? html: col element (table): available through dom, can be styled using css? html: scope attribute (table): available through dom html: headers attribute (table): available through dom html: axis attribute (table): available through dom html: tabindex attribute: yes, can be used to order sequential navigation html: accesskey attribute: supported with alt-{key}, menu key conflict favor the accesskey? html: alt for img: yes html: longdesc for img: yes, available in context menu properties html: alt for area: ? html: alt for input: ? css: text-indent: yes css: text-align: yes css: word-spacing: yes css: letter-...

XForms Accessibility
or 1.1 specs) but rich schwerdtfeger (distinguished engineer, swg accessibility architect/strategist chair, ibm accessibility architecture review board) gave some clarification about navindex. he wrote: navindex was in xforms - it was stripped out as it was believed the focus model was dependent on the content which used it. so, yes we don't care about navindex in xforms. if you use xhtml1.x use tabindex. if you use xhtml2 use nextfocus. therefore since mozilla xforms works in xhtml (1.x) or xul documents only then we use tabindex instead. note, we support -moz-user-focus style neither for xhtml or xul. at api accessible properties this section describes common rules how accessibility properties are formed for forms control elements. name it is formed from value of child xforms label elemen...

nsIAccessibleHyperLink
ext, so the endindex should be startindex + 1. exceptions thrown ns_error_failure indicates that the accessible is unattached from the accessible tree. selected boolean determines whether the element currently has the focus, for example after returning from the destination page. read only. note: aria links can only be focused if they have the tabindex attribute set. also, state_focused should then be set on the accessible for this link. exceptions thrown ns_error_failure indicates that the accessible is unattached from the accessible tree. startindex long the offset of the hyperlink accessible within the parent accessible. the returned value is related to the nsiaccessiblehyperlink interface of...

nsIDOMXULControlElement
...

Hit regions and accessibility - Web APIs
eath.</p> </canvas> see the video how nvda reads this example by steve faulkner. aria rules accessible rich internet applications (aria) defines ways to make web content and web applications more accessible to people with disabilities. you can use aria attributes to describe the behavior and purpose of the canvas element. see aria and aria techniques for more information. <canvas id="button" tabindex="0" role="button" aria-pressed="false" aria-label="start game"></canvas> hit regions whether the mouse coordinates are within a particular area on the canvas, is a common problem to solve. the hit region api allows you to define an area of your canvas and provides another possibility to expose interactive content on a canvas to accessibility tools. it allows you to make hit detection easier an...

CustomElementRegistry.define() - Web APIs
ds htmlelement { constructor() { // always call super first in constructor super(); // create a shadow root var shadow = this.attachshadow({mode: 'open'}); // create spans var wrapper = document.createelement('span'); wrapper.setattribute('class','wrapper'); var icon = document.createelement('span'); icon.setattribute('class','icon'); icon.setattribute('tabindex', 0); var info = document.createelement('span'); info.setattribute('class','info'); // take attribute content and put it inside the info span var text = this.getattribute('text'); info.textcontent = text; // insert icon var imgurl; if(this.hasattribute('img')) { imgurl = this.getattribute('img'); } else { imgurl = 'img/default.png'; } var ...

Element: keydown event - Web APIs
the keydown and keyup events provide a code indicating which key is pressed, while keypress indicates which character was entered. for example, a lowercase "a" will be reported as 65 by keydown and keyup, but as 97 by keypress. an uppercase "a" is reported as 65 by all events. keyboard events are only generated by <inputs>, <textarea> and anything with the contenteditable attribute or with tabindex="-1". since firefox 65, the keydown and keyup events are now fired during ime composition, to improve cross-browser compatibility for cjkt users (bug 354358, also see keydown and keyup events are now fired during ime composition for more useful details). to ignore all keydown events that are part of composition, do something like this (229 is a special value set for a keycode relating to an even...

Element.tabStop - Web APIs
the tabstop property of the element interface returns a boolean indicating if the element can receive input focus via the tab key. if the specified element is a shadow host tab navigation is delegated to its children. this property was proposed to add tab functionality for custom elements. while with the existing tabindex property, it is required to specify an order for the element to become tabbable. the tabstop property would decouple the tabbable property from the tab index. after feedback, this property was removed from the design doc and replaced by shadowroot.delegatesfocus. syntax var istabstop = element.tabstop; element.tabstop = (true|false); example // tbd ...

GlobalEventHandlers.onfocus - Web APIs
note: the opposite of onfocus is onblur. syntax target.onfocus = functionref; value functionref is a function name or a function expression. ...

HTMLInputElement - Web APIs
search is initiated on an <input> of type="search". also available via the onsearch event handler property. specifications specification status comment html living standardthe definition of 'htmlinputelement' in that specification. living standard html5the definition of 'htmlinputelement' in that specification. recommendation technically, the tabindex and accesskey properties, as well as the blur(), click(), and focus() methods, are now defined on htmlelement. the following properties are now obsolete: align and usemap. the following properties have been added: autocomplete, autofocus, dirname, files, formaction, formenctype, formmethod, formnovalidate, formtarget, height, indeterminate, labels, list, max, min, multiple, pattern, placeho...

HTMLElement.focus() - Web APIs
us' in that specification. obsolete document object model (dom) level 1 specificationthe definition of 'focus' in that specification. obsolete notes if you call htmlelement.focus() from a mousedown event handler, you must call event.preventdefault() to keep the focus from leaving the htmlelement behaviour of the focus in relation to different html features like tabindex or shadow dom, which previously remained under-specified, were recently updated (as october of 2019). checkout whatwg blog for more info. ...

HTMLOrForeignElement - Web APIs
t. propertiesdataset read only the dataset read-only property of the htmlorforeignelement interface provides read/write access to all the custom data attributes (data-*) set on the element.nonce the nonce property of the htmlorforeignelement interface returns the cryptographic number used once that is used by content security policy to determine whether a given fetch will be allowed to proceed.tabindexthe tabindex property of the htmlorforeignelement interface represents the tab order of the current element.methodsblur()the htmlelement.blur() method removes keyboard focus from the current element.focus()the htmlelement.focus() method sets focus on the specified element, if it can be focused. the focused element is the element which will receive keyboard and similar events by default. specifica...

HTMLSelectElement - Web APIs
ication. living standard since the latest snapshot, html5, it adds the autocomplete property and the reportvalidity() method. html5the definition of 'htmlselectelement' in that specification. recommendation is a snapshot of html living standard. it adds the autofocus, form, required, labels, selectedoptions, willvalidate, validity and validationmessage properties. the tabindex property and the blur() and focus() methods have been moved to htmlelement. the methods item(), nameditem(), checkvalidity() and setcustomvalidity(). document object model (dom) level 2 html specificationthe definition of 'htmlselectelement' in that specification. obsolete options now returns an htmloptionscollection. length now returns an unsigned long. document o...

Index - Web APIs
keyboard and similar events by default. 1864 htmlelement.nonce api, content security policy, experimental, html dom, htmlelement, property, reference, nonce the nonce property of the htmlelement interface returns the cryptographic number used once that is used by content security policy to determine whether a given fetch will be allowed to proceed. 1865 htmlelement.tabindex api, html dom, htmlelement, property, reference the tabindex property of the htmlelement interface represents the tab order of the current element. 1866 htmloutputelement api, html dom, interface, reference the htmloutputelement interface provides properties and methods (beyond those inherited from htmlelement) for manipulating the layout and presentation of <output...

SVGGraphicsElement: paste event - Web APIs
t, but this will not affect the document's contents. ...

ARIA guides - Accessibility
accessible rich internet applications (aria) defines ways to make the web more accessible to people with disabilities. a few guidelines to follow that ensure better accessibility, like using drag and drop for placement of the widgets. error handling in forms labeling widgets labeling composite widgets and regions managing focus in composite widgets (aria-activedescendant vs roving tabindex) using landmark roles handling dynamic updates & live regions virtual vs. non virtual mode in at products using drag & drop notifying users of non-aria screen readers fixing structure with presentation role hiding layout tables managing modal and non modal dialogs using aria with html5 how to test aria aria on mobile devices ...

Using the alertdialog role - Accessibility
w assistive technology should handle this technique. the information provided above is one of those opinions and therefore not normative. examples example 1: a basic alert dialog the code snippet below shows how to mark up an alert dialog that only provides a message and an ok button. ...

x-ms-aria-flowfrom - Accessibility
e order. the property serves to define element relationships utilizing aria relationship attributes and the aria-flowto property. this proprietary property is specific to internet explorer and microsoft edge. ...

ARIA: tabpanel role - Accessibility
n, instead of re-purposing an element and adding an aria role, state or property to make it accessible, then do so. then post full details in best practices section below. examples fill in a simple example that nicely shows a typical usage of the property, then perhaps some more complex examples. <div role="tablist"> <div role="tab" aria-selected="true" aria-controls="tabpanel-id" id="tab-id" tabindex="0">tab label</div> accessibility concerns optionally, warn of any potential accessibility concerns that exist with using this property, and how to work around them. remove this section if there are none to list. best practices optionally, here list any best practices that exist for this role. remove the section if none exist. added benefits any additional benefits this feature has for non...

ARIA: feed role - Accessibility
list of related products on an ecommerce page. these streams can be limited or infinite, loading more content as the user scrolls. implementing the feed pattern allows a screen reader to reliably read and trigger the loading of feed content while in reading mode. a feed is a container element whose children are <article>s or have role article. each article within a feed should be focusable, with tabindex of 0 or -1. an article should be scrolled into view when it, or a descendant element, receives focus. if the addition of articles occupies the main browser thread, make sure to set aria-busy="true" on the feed itself, and make sure to set it back to false when processing ends, or the user may not see the updates. to ensure good user experience, avoid inserting or removing articles in the middle ...

ARIA: Region role - Accessibility
e>region</code> role with discretion</h3> <!-- content --> </div> ... <div role="region" aria-labelledby="please-reconsider"> <h3 id="please-reconsider">please reconsider your document structure</h3> <!-- content --> </div> in this example, the region's label is being generated by the aria-labelledby attribute. scrolling content areas with overflow text if there is a content area with tabindex="0", add role="region" to convey to screen reader users that is a generic region. this is done to allow keyboard-only users to scroll regions with overflow text. svg role="region" can be declared on areas of svg along with an aria-label to allow individual sections of the svg to be described. added benefits certain technologies such as browser extensions can generate lists of all landmark rol...

ARIA: switch role - Accessibility
lue mixed for the aria-checked attribute; assigning a value of mixed to a switch instead sets the value to false. assistive technologies may choose to represent switch widgets with a specialized presentation to reflect the notion of an on/off switch. since a switch is an interactive control, it must be focusable and keyboard accessible. if the role is applied to a non-focusable element, use the tabindex attribute to change this. the expected keyboard shortcut for toggling the value of a switch is the space key. the developer is required to change the value of the aria-checked attribute dynamically when the switch is toggled. associated aria roles, states, and properties aria-checked attribute the aria-checked attribute is required when using the switch role, as it represents the current sta...

ARIA: listbox role - Accessibility
tate or property to make it accessible, then do so. the <select> element with descendant <option> elements handles all the needed interactions natively. examples example 1: a single select listbox that uses aria-activedescendant the snippet below shows how the listbox role is added directly into the html source code. ...

Accessibility Information for Web Authors - Accessibility
cessibility guidelines (wcag) 1.0 another important set of guidelines from the w3c web accessibility initiative (wai). the european union is looking to base their upcoming accessibility regulations on these guidelines. these guidelines are discussed on the wai interest group discussion list. how-to's key-navigable custom dhtml widgets in mozilla & ie this document discusses how to use tabindex, element.focus() and onkeypress to make custom dhtml widgets such as menus or tree views keyboard accessible. accessible web page authoring ibm has put together a simple, practical resource for web authors to learn accessibility the fast and painless way. highly recommended, an excellent resource. dive into accessibility by mark pilgrim an excellent, easy-to-understand resource (availab...

:focus-visible - CSS: Cascading Style Sheets
n: 10px; } .focus-only:focus { outline: 2px solid black; } .focus-visible-only:focus-visible { outline: 4px dashed darkorange; } selectively showing the focus indicator a custom control, such as a custom element button, can use :focus-visible to selectively apply a focus indicator only on keyboard-focus. this matches the native focus behavior for controls like <button>. ...

CSS Grid Layout and Accessibility - CSS: Cascading Style Sheets
ives authors great powers of rearrangement over the document. however, these are not a substitute for correct ordering of the document source. the order property and grid placement do not affect ordering in non-visual media (such as speech). likewise, rearranging grid items visually does not affect the default traversal order of sequential navigation modes (such as cycling through links, see e.g. tabindex html5). if you reorder things visually using grid layout, this will not change how the items are ordered if the content is being read out by a screen reader, or other text to speech user agent. in addition, the reordering will not change tab order. this means that someone navigating using the keyboard could be tabbing through links on your site and suddenly find themselves jumping from the top ...

justify-items - CSS: Cascading Style Sheets
he grid container is given a justify-items value of stretch (the default), which causes the grid items to stretch across the entire width of their cells. if you hover or tab onto the grid container however, it is given a justify-items value of center, which causes the grid items to span only as wide as their content width, and align in the center of their cells. ...

matrix3d() - CSS: Cascading Style Sheets
eric 3d affine transformation can't be represented using a cartesian-coordinate matrix, as translations are not linear transformations. a1a2a3a4b1b2b3b4c1c2c3c4d1d2d3d4 examples cube squashing example the following example shows a 3d cube created from dom elements and transforms, which can be hovered/focused to apply a matrix3d() transform to it. ...

HTML attribute reference - HTML: Hypertext Markup Language
mbeddable content. srcdoc <iframe> srclang <track> srcset <img>, <source> one or more responsive image candidates. start <ol> defines the first number if other than 1. step <input> style global attribute defines css styles which will override styles previously set. summary <table> tabindex global attribute overrides the browser's default tab order and follows the one specified instead. target <a>, <area>, <base>, <form> specifies where to open the linked document (in the case of an <a> element) or where to display the response recieved (in the case of a <form> element) title global attribute text to be displayed in a tooltip when hovering over th...

<area> - HTML: Hypertext Markup Language
ions (e.g. firefox 79+) setting target="_blank" on <area> elements implicitly provides the same rel behavior as setting rel="noopener". deprecated attributes name define a names for the clickable area so that it can be scripted by older browsers. nohref indicates that no hyperlink exists for the associated area. note: since html5, omitting the href attribute is sufficient. tabindex a numeric value specifying the position of the defined area in the browser tabbing order. this attribute is global in html5. type no effect. browsers ignore it. (the w3c 5.3 fork of the html specification defines it as valid, but the canonical html specification doesn’t, and it has no effect in any user agents.) examples <map name="primary"> <area shape="circle" coords="75,75,75" hr...

<dialog>: The Dialog element - HTML: Hypertext Markup Language
tioning root permitted content flow content tag omission none, both the starting and ending tag are mandatory. permitted parents any element that accepts flow content implicit aria role dialog permitted aria roles alertdialog dom interface htmldialogelement attributes this element includes the global attributes. the tabindex attribute must not be used on the <dialog> element. open indicates that the dialog is active and can be interacted with. when the open attribute is not set, the dialog shouldn't be shown to the user. usage notes <form> elements can close a dialog if they have the attribute method="dialog". when such a form is submitted, the dialog closes with its returnvalue property set to the value of...

<input>: The Input (Form Input) element - HTML: Hypertext Markup Language
by the user doesn't adhere to the stepping configuration, the value is considered invalid in contraint validation and will match the :invalid pseudoclass. the step attribute is expressed in seconds. the step scale factor is 1000 (which converts the seconds to milliseconds, as used in the other algorithms). the default step is 60 seconds. see client-side validation for more information. tabindex global attribute valid for all elements, including all the input types, an integer attribute indicating if the element can take input focus (is focusable), if it should participate to sequential keyboard navigation. as all input types except for input of type hidden are focusable, this attribute should not be used on form controls, because doing so would require the management of the focus ord...

<object> - HTML: Hypertext Markup Language
alue of the attribute must be an id of a <form> element in the same document. height the height of the displayed resource, in css pixels. -- (absolute values only. no percentages) name the name of valid browsing context (html5), or the name of the control (html 4). standbyhtml 4 onlyobsolete since html5 a message that the browser can show while loading the object's implementation and data. tabindexhtml 4 onlyobsolete since html5 the position of the element in the tabbing navigation order for the current document. type the content type of the resource specified by data. at least one of data and type must be defined. typemustmatchhtml5 this boolean attribute indicates if the type attribute and the actual content type of the resource must match to be used. usemap a hash-name reference t...

HTML documentation index - HTML: Hypertext Markup Language
or spelling errors. 30 style global attributes, html, reference the style global attribute contains css styling declarations to be applied to the element. note that it is recommended for styles to be defined in a separate file or files. this attribute and the <style> element have mainly the purpose of allowing for quick styling, for example for testing purposes. 31 tabindex global attributes, html, reference the tabindex global attribute indicates that its element can be focused, and where it participates in sequential keyboard navigation (usually with the tab key, hence the name). 32 title global attributes, html, reference, title the title global attribute contains text representing advisory information related to the element it belo...

visibility - SVG: Scalable Vector Graphics
value visible | hidden | collapse default value visible animatable yes visible this value indicates that the element will be painted. hidden this value indicates that the element will not be painted. though it is still part of the rendering tree, i.e. it may receive pointer events depending on the pointer-events attribute, may receive focus depending on the tabindex attribute, contributes to bounding box calculations and clipping paths, and does affect text layout. collapse this value is equal to hidden. example the following example toggles the css visibility of the svg image path. html <button id="nav-toggle-button" > <svg xmlns="http://www.w3.org/2000/svg" width="24" height="24" viewbox="0 0 24 24" class="button-icon"> <path d="m16.59 8.59l12...

<a> - SVG: Scalable Vector Graphics
_self; animatable: yes type a mime type for the linked url. value type: <string> ; default value: none; animatable: yes xlink:href deprecated since svg 2 the url or url fragment that the hyperlink points to. may be required for backwards compatibility for older browsers. ...

<circle> - SVG: Scalable Vector Graphics
value type: <length> ; default value: 0; animatable: yes pathlength the total length for the circle's circumference, in user units. value type: <number> ; default value: none; animatable: yes note: starting with svg2, cx, cy, and r are geometry properties, meaning those attributes can also be used as css properties for that element. ...

<ellipse> - SVG: Scalable Vector Graphics
tage> ; default value: auto; animatable: yes pathlength this attribute lets specify the total length for the path, in user units. value type: <number> ; default value: none; animatable: yes note: starting with svg2 cx, cy, rx and ry are geometry properties, meaning those attributes can also be used as css properties for that element. ...

<foreignObject> - SVG: Scalable Vector Graphics
value type: <length>|<percentage> ; default value: 0; animatable: yes y the y coordinate of the foreignobject. value type: <length>|<percentage> ; default value: 0; animatable: yes note: starting with svg2, x, y, width, and height are geometry properties, meaning those attributes can also be used as css properties for that element. ...

<g> - SVG: Scalable Vector Graphics
y,svg { height:100% } <svg viewbox="0 0 100 100" xmlns="http://www.w3.org/2000/svg"> <!-- using g to inherit presentation attributes --> <g fill="white" stroke="green" stroke-width="5"> <circle cx="40" cy="40" r="25" /> <circle cx="60" cy="60" r="25" /> </g> </svg> attributes this element only includes global attributes global attributes core attributes most notably: id, tabindex styling attributes class, style conditional processing attributes most notably: requiredextensions, systemlanguage event attributes global event attributes, graphical event attributes presentation attributes most notably: clip-path, clip-rule, color, color-interpolation, color-rendering, cursor, display, fill, fill-opacity, fill-rule, filter, mask, opacity, pointer-events, shape-rendering...

<line> - SVG: Scalable Vector Graphics
. value type: <length>|<percentage>|<number> ; default value: 0; animatable: yes y2 defines the y-axis coordinate of the line ending point. value type: <length>|<percentage>|<number> ; default value: 0; animatable: yes pathlength defines the total path length in user units. ...

<marker> - SVG: Scalable Vector Graphics
matable: yes refy this attribute defines the y coordinate for the reference point of the marker. value type: top|center|bottom|<coordinate> ; default value: 0; animatable: yes viewbox this attribute defines the bound of the svg viewport for the current svg fragment. ...

<path> - SVG: Scalable Vector Graphics
q 90,60 50,90 q 10,60 10,30 z"/> </svg> attributes d this attribute defines the shape of the path. value type: <string> ; default value: ''; animatable: yes pathlength this attribute lets authors specify the total length for the path, in user units. ...

<pattern> - SVG: Scalable Vector Graphics
butes. value type: <url>; default value: none; animatable: yes note: for browsers implementing href, if both href and xlink:href are set, xlink:href will be ignored and only href will be used. y this attribute determines the y coordinate shift of the pattern tile. ...

<polygon> - SVG: Scalable Vector Graphics
attributes points this attribute defines the list of points (pairs of x,y absolute coordinates) required to draw the polygon. value type: <number>+ ; default value: ""; animatable: yes pathlength this attribute lets specify the total length for the path, in user units. ...

<polyline> - SVG: Scalable Vector Graphics
attributes points this attribute defines the list of points (pairs of x,y absolute coordinates) required to draw the polyline value type: <number>+ ; default value: ""; animatable: yes pathlength this attribute lets specify the total length for the path, in user units. ...

<rect> - SVG: Scalable Vector Graphics
ge> ; default value: auto; animatable: yes pathlength the total length of the rectangle's perimeter, in user units. value type: <number> ; default value: none; animatable: yes note: starting with svg2, x, y, width, height, rx and ry are geometry properties, meaning those attributes can also be used as css properties for that element. ...

<svg> - SVG: Scalable Vector Graphics
tage> ; default value: 0; animatable: yes y the displayed y coordinate of the svg container. no effect on outermost svg elements. value type: <length>|<percentage> ; default value: 0; animatable: yes note: starting with svg2, x, y, width, and height are geometry properties, meaning these attributes can also be used as css properties. ...

<text> - SVG: Scalable Vector Graphics
ne; animatable: yes lengthadjust how the text is stretched or compressed to fit the width defined by the textlength attribute. value type: spacing|spacingandglyphs; default value: spacing; animatable: yes textlength a width that the text should be scaled to fit. ...

<textPath> - SVG: Scalable Vector Graphics
matable: yes startoffset how far the beginning of the text should be offset from the beginning of the path. value type: <length>|<percentage>|<number> ; default value: 0; animatable: yes textlength the width of the space into which the text will render. ...

<tspan> - SVG: Scalable Vector Graphics
ne; animatable: yes lengthadjust how the text is stretched or compressed to fit the width defined by the textlength attribute. value type: spacing|spacingandglyphs; default value: spacing; animatable: yes textlength a width that the text should be scaled to fit. ...

<use> - SVG: Scalable Vector Graphics
: yes note: width, and height have no effect on use elements, unless the element referenced has a viewbox - i.e. they only have an effect when use refers to a svg or symbol element. note: starting with svg2, x, y, width, and height are geometry properties, meaning those attributes can also be used as css properties for that element. ...

SVG documentation index - SVG: Scalable Vector Graphics
211 surfacescale filters, needscompattable, svg, svg attribute the surfacescale attribute represents the height of the surface for a light filter primitive. 212 systemlanguage svg, svg attribute the systemlanguage attribute represents a list of supported language tags. this list is matched against the language defined in the user preferences. 213 tabindex svg, svg attribute the tabindex attribute allows you to control whether an element is focusable and to define the relative order of the element for the purposes of sequential focus navigation. 214 tablevalues svg, svg attribute the tablevalues attribute defines a list of numbers defining a lookup table of values for a for a color component transfer function. ...

Using custom elements - Web Components
nd finally attach some css to the shadow root to style it. ...

Using shadow DOM - Web Components
/ create a shadow root let shadow = this.attachshadow({mode: 'open'}); creating the shadow dom structure next, we use some dom manipulation to create the element's internal shadow dom structure: // create spans let wrapper = document.createelement('span'); wrapper.setattribute('class', 'wrapper'); let icon = document.createelement('span'); icon.setattribute('class', 'icon'); icon.setattribute('tabindex', 0); let info = document.createelement('span'); info.setattribute('class', 'info'); // take attribute content and put it inside the info span let text = this.getattribute('data-text'); info.textcontent = text; // insert icon let imgurl; if(this.hasattribute('img')) { imgurl = this.getattribute('img'); } else { imgurl = 'img/default.png'; } let img = document.createelement('img'); img.src =...