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/DOM

element

Element is the most general base class from which all objects in a Document inherit. It only has methods and properties common to all kinds of elements. More specific classes inherit from Element. For example, the HTMLElement interface is the base interface for HTML elements, while the SVGElement interface is the basis for all SVG elements. Most functionality is specified further down the class hierarchy.

Languages outside the realm of the Web platform, like XUL through the XULElement interface, also implement Element.

Properties

Inherits properties from its parent interface, Node, and by extension that interface's parent, EventTarget. It implements the properties of ParentNode, ChildNode, NonDocumentTypeChildNode, and Animatable.

Element.attributes Read only: Returns a NamedNodeMap object containing the assigned attributes of the corresponding HTML element.
Element.classList Read only: Returns a DOMTokenList containing the list of class attributes.
Element.className: Is a DOMString representing the class of the element.
Element.clientHeight Read only: Returns a Number representing the inner height of the element.
Element.clientLeft Read only: Returns a Number representing the width of the left border of the element.
Element.clientTop Read only: Returns a Number representing the width of the top border of the element.
Element.clientWidth Read only: Returns a Number representing the inner width of the element.
Element.computedName Read only: Returns a DOMString containing the label exposed to accessibility.
Element.computedRole Read only: Returns a DOMString containing the ARIA role that has been applied to a particular element.
Element.id: Is a DOMString representing the id of the element.
Element.innerHTML: Is a DOMString representing the markup of the element's content.
Element.localName Read only: A DOMString representing the local part of the qualified name of the element.
Element.namespaceURI Read only: The namespace URI of the element, or null if it is no namespace.

Note: In Firefox 3.5 and earlier, HTML elements are in no namespace. In later versions, HTML elements are in the http://www.w3.org/1999/xhtml namespace in both HTML and XML trees.
NonDocumentTypeChildNode.nextElementSibling Read only: Is an Element, the element immediately following the given one in the tree, or null if there's no sibling node.
Element.outerHTML: Is a DOMString representing the markup of the element including its content. When used as a setter, replaces the element with nodes parsed from the given string.
Element.prefix Read only: A DOMString representing the namespace prefix of the element, or null if no prefix is specified.
NonDocumentTypeChildNode.previousElementSibling Read only: Is a Element, the element immediately preceding the given one in the tree, or null if there is no sibling element.
Element.scrollHeight Read only: Returns a Number representing the scroll view height of an element.
Element.scrollLeft: Is a Number representing the left scroll offset of the element.
Element.scrollLeftMax Read only: Returns a Number representing the maximum left scroll offset possible for the element.
Element.scrollTop: A Number representing number of pixels the top of the document is scrolled vertically.
Element.scrollTopMax Read only: Returns a Number representing the maximum top scroll offset possible for the element.
Element.scrollWidth Read only: Returns a Number representing the scroll view width of the element.
Element.shadowRootRead only: Returns the open shadow root that is hosted by the element, or null if no open shadow root is present.
Element.openOrClosedShadowRoot Read only: Returns the shadow root that is hosted by the element, regardless if its open or closed. Available only to WebExtensions.
Element.slot: Returns the name of the shadow DOM slot the element is inserted in.
Element.tabStop: Is a Boolean indicating if the element can receive input focus via the tab key.
Element.tagName Read only: Returns a String with the name of the tag for the given element.
Element.undoManager Read only: Returns the UndoManager associated with the element.
Element.undoScope: Is a Boolean indicating if the element is an undo scope host, or not.

Note: DOM Level 3 defined namespaceURI, localName and prefix on the Node interface. In DOM4 they were moved to Element.

This change is implemented in Chrome since version 46.0 and Firefox since version 48.0.

Properties included from Slotable

The Element interface includes the following property, defined on the Slotable mixin.

Slotable.assignedSlotRead only: Returns a HTMLSlotElement representing the <slot> the node is inserted in.

Event handlers

Element.onfullscreenchange: An event handler for the fullscreenchange event, which is sent when the element enters or exits full-screen mode. This can be used to watch both for successful expected transitions, but also to watch for unexpected changes, such as when your app is backgrounded.
Element.onfullscreenerror: An event handler for the fullscreenerror event, which is sent when an error occurs while attempting to change into full-screen mode.

Obsolete event handlers

Element.onwheel: Returns the event handling code for the wheel event. This is now implemented on GlobalEventHandlers.

Methods

Inherits methods from its parents Node, and its own parent, EventTarget, and implements those of ParentNode, ChildNode, NonDocumentTypeChildNode, and Animatable.

EventTarget.addEventListener(): Registers an event handler to a specific event type on the element.
Element.attachShadow(): Attatches a shadow DOM tree to the specified element and returns a reference to its ShadowRoot.
Element.animate(): A shortcut method to create and run an animation on an element. Returns the created Animation object instance.
Element.closest(): Returns the Element which is the closest ancestor of the current element (or the current element itself) which matches the selectors given in parameter.
Element.createShadowRoot(): Creates a shadow DOM on on the element, turning it into a shadow host. Returns a ShadowRoot.
Element.computedStyleMap(): Returns a StylePropertyMapReadOnly interface which provides a read-only representation of a CSS declaration block that is an alternative to CSSStyleDeclaration.
EventTarget.dispatchEvent(): Dispatches an event to this node in the DOM and returns a Boolean that indicates whether no handler canceled the event.
Element.getAnimations(): Returns an array of Animation objects currently active on the element.
Element.getAttribute(): Retrieves the value of the named attribute from the current node and returns it as an Object.
Element.getAttributeNames(): Returns an array of attribute names from the current element.
Element.getAttributeNS(): Retrieves the value of the attribute with the specified name and namespace, from the current node and returns it as an Object.
Element.getAttributeNode(): Retrieves the node representation of the named attribute from the current node and returns it as an Attr.
Element.getAttributeNodeNS(): Retrieves the node representation of the attribute with the specified name and namespace, from the current node and returns it as an Attr.
Element.getBoundingClientRect(): Returns the size of an element and its position relative to the viewport.
Element.getClientRects(): Returns a collection of rectangles that indicate the bounding rectangles for each line of text in a client.
Element.getElementsByClassName(): Returns a live HTMLCollection that contains all descendants of the current element that possess the list of classes given in the parameter.
Element.getElementsByTagName(): Returns a live HTMLCollection containing all descendant elements, of a particular tag name, from the current element.
Element.getElementsByTagNameNS(): Returns a live HTMLCollection containing all descendant elements, of a particular tag name and namespace, from the current element.
Element.hasAttribute(): Returns a Boolean indicating if the element has the specified attribute or not.
Element.hasAttributeNS(): Returns a Boolean indicating if the element has the specified attribute, in the specified namespace, or not.
Element.hasAttributes(): Returns a Boolean indicating if the element has one or more HTML attributes present.
Element.hasPointerCapture(): Indicates whether the element on which it is invoked has pointer capture for the pointer identified by the given pointer ID.
Element.insertAdjacentElement(): Inserts a given element node at a given position relative to the element it is invoked upon.
Element.insertAdjacentHTML(): Parses the text as HTML or XML and inserts the resulting nodes into the tree in the position given.
Element.insertAdjacentText(): Inserts a given text node at a given position relative to the element it is invoked upon.
Element.matches(): Returns a Boolean indicating whether or not the element would be selected by the specified selector string.
Element.querySelector(): Returns the first Node which matches the specified selector string relative to the element.
Element.querySelectorAll(): Returns a NodeList of nodes which match the specified selector string relative to the element.
Element.releasePointerCapture(): Releases (stops) pointer capture that was previously set for a specific pointer event.
ChildNode.remove(): Removes the element from the children list of its parent.
Element.removeAttribute(): Removes the named attribute from the current node.
Element.removeAttributeNS(): Removes the attribute with the specified name and namespace, from the current node.
Element.removeAttributeNode(): Removes the node representation of the named attribute from the current node.
EventTarget.removeEventListener(): Removes an event listener from the element.
Element.requestFullscreen(): Asynchronously asks the browser to make the element full-screen.
Element.requestPointerLock(): Allows to asynchronously ask for the pointer to be locked on the given element.

Element.scroll(): Scrolls to a particular set of coordinates inside a given element.
Element.scrollBy(): Scrolls an element by the given amount.
Element.scrollIntoView(): Scrolls the page until the element gets into the view.
Element.scrollTo(): Scrolls to a particular set of coordinates inside a given element.
Element.setAttribute(): Sets the value of a named attribute of the current node.
Element.setAttributeNS(): Sets the value of the attribute with the specified name and namespace, from the current node.
Element.setAttributeNode(): Sets the node representation of the named attribute from the current node.
Element.setAttributeNodeNS(): Sets the node representation of the attribute with the specified name and namespace, from the current node.
Element.setCapture(): Sets up mouse event capture, redirecting all mouse events to this element.
Element.setPointerCapture(): Designates a specific element as the capture target of future pointer events.
Element.toggleAttribute(): Toggles a boolean attribute, removing it if it is present and adding it if it is not present, on the specified element.

Specifications

Specification	Status	Comment
Web Animations	Working Draft	Added the `getAnimations()` method.
UndoManager and DOMTransaction The definition of 'Element' in that specification.	Editor's Draft	Added the `undoScope` and `undoManager` properties.
Pointer Events – Level 2 The definition of 'Element' in that specification.	Working Draft	Added the following event handlers: `ongotpointercapture` and `onlostpointercapture`. Added the following methods: `setPointerCapture()` and `releasePointerCapture()`.
Pointer Events The definition of 'Element' in that specification.	Recommendation	Added the following event handlers: `ongotpointercapture` and `onlostpointercapture`. Added the following methods: `setPointerCapture()` and `releasePointerCapture()`.
Selectors API Level 1 The definition of 'Element' in that specification.	Obsolete	Added the following methods: `querySelector()` and `querySelectorAll()`.
Pointer Lock The definition of 'Element' in that specification.	Candidate Recommendation	Added the `requestPointerLock()` method.
Fullscreen API The definition of 'Element' in that specification.	Living Standard	Added the `requestFullscreen()` method.
DOM Parsing and Serialization The definition of 'Element' in that specification.	Working Draft	Added the following properties: `innerHTML`, and `outerHTML`. Added the following method: `insertAdjacentHTML()`.
CSS Object Model (CSSOM) View Module The definition of 'Element' in that specification.	Working Draft	Added the following properties: `scrollTop`, `scrollLeft`, `scrollWidth`, `scrollHeight`, `clientTop`, `clientLeft`, `clientWidth`, and `clientHeight`. Added the following methods: `getClientRects()`, `getBoundingClientRect()`, `scroll()`, `scrollBy()`, `scrollTo()` and `scrollIntoView()`.
Element Traversal Specification The definition of 'Element' in that specification.	Obsolete	Added inheritance of the `ElementTraversal` interface.
DOM The definition of 'Element' in that specification.	Living Standard	Added the following methods: `closest()`, `insertAdjacentElement()` and `insertAdjacentText()`. Moved `hasAttributes()` from the `Node` interface to this one.
DOM4 The definition of 'Element' in that specification.	Obsolete	Removed the following methods: `setIdAttribute()`, `setIdAttributeNS()`, and `setIdAttributeNode()`. Modified the return value of `getElementsByTagName()` and `getElementsByTagNameNS()`. Removed the `schemaTypeInfo` property.
Document Object Model (DOM) Level 3 Core Specification The definition of 'Element' in that specification.	Obsolete	Added the following methods: `setIdAttribute()`, `setIdAttributeNS()`, and `setIdAttributeNode()`. These methods were never implemented and have been removed in later specifications. Added the `schemaTypeInfo` property. This property was never implemented and has been removed in later specifications.
Document Object Model (DOM) Level 2 Core Specification The definition of 'Element' in that specification.	Obsolete	The `normalize()` method has been moved to `Node`.
Document Object Model (DOM) Level 1 Specification The definition of 'Element' in that specification.	Obsolete	Initial definition.

Browser compatibilityUpdate compatibility data on GitHub

	Desktop
	Chrome	Edge	Firefox	Internet Explorer	Opera	Safari
Basic support	1	Yes	1	Yes	Yes	Yes
`accessKey`	No No Implemented on HTMLElement.	?	?	?	No No Implemented on HTMLElement.	?
`animate`	36	No	48	No	23	No
`attachShadow`	53	No No Under consideration	63 63 59 Disabled See bug 1205323 Disabled From version 59: this feature is behind the `dom.webcomponents.shadowdom.enabled` preference (needs to be set to `true`). To change preferences in Firefox, visit about:config.	No	40	10
`attributes`	26	No	22	?	?	?
`classList`	8	16 16 12 Not supported for SVG elements.	3.6	10	Yes	5.1
`className`	Yes	Yes	Yes	Yes	Yes	Yes
`clientHeight`	Yes	Yes	Yes	6	Yes	Yes
`clientLeft`	Yes	?	?	?	Yes	?
`clientTop`	Yes	?	?	?	Yes	?
`clientWidth`	Yes	Yes	Yes	6	Yes	Yes
`closest`	41	15	35	No	28	9
`computedStyleMap`	66	No	No	No	53	No
`createShadowRoot`	35 35 In Chrome 45, the ability to have multiple shadow roots was deprecated. 25 — ? Prefixed Prefixed Implemented with the vendor prefix: webkit	No	59 — 61 Disabled 59 — 61 Disabled Disabled From version 59 until version 61 (exclusive): this feature is behind the `dom.webcomponents.shadowdom.enabled` preference (needs to be set to `true`). To change preferences in Firefox, visit about:config. 29 — 59 Disabled Disabled From version 29 until version 59 (exclusive): this feature is behind the `dom.webcomponents.enabled` preference (needs to be set to `true`). To change preferences in Firefox, visit about:config.	No	22 22 In Opera 32, the ability to have multiple shadow roots was deprecated. 15 — ? Prefixed Prefixed Implemented with the vendor prefix: webkit	No
`currentStyle`	No	No	No	6	No	No
`getAttribute`	29	Yes	23	Yes	Yes	6
`getAttributeNS`	Yes	Yes	Yes Yes Starting in Firefox 13, `null` is always returned instead of the empty string, as per the DOM4 specification. Previously, there were cases in which an empty string could be returned.	Yes	Yes	Yes
`getAttributeNames`	61	18	45	No	48	9
`getAttributeNode`	Yes	?	?	?	Yes	?
`getAttributeNodeNS`	Yes	?	?	?	Yes	?
`getBoundingClientRect`	Yes	Yes	3	4	Yes	4
`getClientRects`	Yes	?	?	?	Yes	?
`getElementsByClassName`	Yes	?	Yes Yes Prior to Firefox 19, this method was returning a `NodeList`; it was then changed to reflect the change in the spec.	9	Yes	Yes Yes Safari on iOS 8 and OS X 10.10 returns a `NodeList`.
`getElementsByTagName`	1 1 Initially, this method was returning a `NodeList`; it was then changed to reflect the spec change.	Yes	Yes Yes Prior to Firefox 19, this method was returning a `NodeList`; it was then changed to reflect the change in the spec.	5.5	Yes Yes Initially, this method was returning a `NodeList`; it was then changed to reflect the spec change.	Yes Yes Initially, this method was returning a `NodeList`; it was then changed to reflect the spec change.
`getElementsByTagNameNS`	1 1 Initially, this method was returning a `NodeList`; it was then changed to reflect the spec change.	Yes	Yes Yes The behavior of `element.getElementsByTagNameNS` changed between Firefox 3.5 and Firefox 3.6. In Firefox 3.5 and before, this function would automatically case-fold any queries so that a search for "foo" would match "Foo" or "foo". In Firefox 3.6 and later this function is now case-sensitive so that a query for "foo" will only match "foo" and not "Foo". For more background on this, please see the comment from Henri Sivonen about the change. You can also look at the relevant part of the standard, which states which parts of the API are case-sensitive and which parts aren't. Prior to Firefox 19, this method was returning a `NodeList`; it was then changed to reflects the spec change.	5.5	Yes Yes Initially, this method was returning a `NodeList`; it was then changed to reflect the spec change.	Yes Yes Initially, this method was returning a `NodeList`; it was then changed to reflect the spec change.
`hasAttribute`	Yes	Yes	Yes	Yes	Yes	Yes
`hasAttributeNS`	Yes	?	?	?	Yes	?
`hasAttributes`	Yes	?	Yes Yes [1] Before Firefox 35, it was implemented on the `Node` interface.	9	Yes	Yes
`id`	Yes	Yes	Yes	Yes	Yes	Yes
`innerHTML`	1	12	1	4	7	Yes
`insertAdjacentElement`	1	12	48	Yes	Yes	Yes
`insertAdjacentHTML`	1	12	8	4 4 Before Internet Explorer 10, throws an "Invalid target element for this operation." error when called on a `<table>`, `<tbody>`, `<thead>`, or `<tr>` element.	7	4
`insertAdjacentText`	1	12	48	Yes	Yes	Yes
`localName`	46 46 This API was previously available on the`Node` API.	?	48 48 This API was previously available on the`Node` API.	?	Yes	?
`matches`	34 34 Yes Uses the non-standard name: `webkitMatchesSelector`	Yes Yes Yes Uses the non-standard name: `webkitMatchesSelector` Yes Uses the non-standard name: `msMatchesSelector`	34 34 44 Uses the non-standard name: `webkitMatchesSelector` 3.6 Prior to Firefox 4, invalid selector strings caused false to be returned instead of throwing an exception. See bug 1119718 for removal. Uses the non-standard name: `mozMatchesSelector`	9 9 Uses the non-standard name: `msMatchesSelector`	21 21 15 Uses the non-standard name: `webkitMatchesSelector` 11.5 — 15 Uses the non-standard name: `oMatchesSelector`	7 7 5 Uses the non-standard name: `webkitMatchesSelector`
`name`	No	?	?	?	No	?
`namespaceURI`	46 46 This API was previously available on the`Node` API.	?	48 48 This API was previously available on the`Node` API.	?	Yes Yes This API was previously available on the`Node` API.	?
`openOrClosedShadowRoot`	No	No	63 63 Available only to WebExtensions.	No	No	No
`onfullscreenchange`	57	?	64	?	?	?
`onfullscreenerror`	57	?	64	?	?	?
`ongotpointercapture`	55	?	59 59 41 Disabled Disabled From version 41: this feature is behind the `dom.w3c_pointer_events.enabled` preference (needs to be set to `true`). To change preferences in Firefox, visit about:config.	11 11 10 Prefixed Prefixed Implemented with the vendor prefix: ms	42	No
`onlostpointercapture`	55	?	59 59 41 Disabled Disabled From version 41: this feature is behind the `dom.w3c_pointer_events.enabled` preference (needs to be set to `true`). To change preferences in Firefox, visit about:config.	11 11 10 Prefixed Prefixed Implemented with the vendor prefix: ms	42	No
`outerHTML`	Yes	Yes	11	4	7	1.3
`prefix`	46 46 This API was previously available on the`Node` API.	Yes	48 48 This API was previously available on the`Node` API.	?	Yes	?
`querySelector`	1	12	3.5	9 9 8 `querySelector()` is supported, but only for CSS 2.1 selectors.	Yes	Yes
`querySelectorAll`	1	Yes	3.5	9 9 8 `querySelectorAll()` is supported, but only for CSS 2.1 selectors.	10	3.2
`releasePointerCapture`	55	?	59 59 41 Disabled Disabled From version 41: this feature is behind the `dom.w3c_pointer_events.enabled` preference (needs to be set to `true`). To change preferences in Firefox, visit about:config.	11 11 10 Prefixed Prefixed Implemented with the vendor prefix: ms	42	No
`removeAttribute`	Yes	?	?	?	Yes	?
`removeAttributeNS`	Yes	?	?	?	Yes	?
`removeAttributeNode`	Yes	?	?	?	Yes	?
`requestFullscreen`	15 Prefixed 15 Prefixed Prefixed Implemented with the vendor prefix: webkit	Yes Prefixed Yes Prefixed Prefixed Implemented with the vendor prefix: webkit	64 64 47 Disabled Disabled From version 47: this feature is behind the `full-screen-api.unprefix.enabled` preference (needs to be set to `true`). To change preferences in Firefox, visit about:config. 9 Before Firefox 44, Firefox incorrectly allowed elements inside a `<frame>` or an `<object>` to request, and to be granted, fullscreen. In Firefox 44 and onwards this has been fixed: only elements in the top-level document or in an `<iframe>` with the `allowfullscreen` attribute can be displayed fullscreen. Uses the non-standard name: `mozRequestFullScreen`	11 Prefixed 11 Prefixed Prefixed Implemented with the vendor prefix: ms	15 Prefixed 15 Prefixed Prefixed Implemented with the vendor prefix: webkit 12 — 15 Prefixed Prefixed Implemented with the vendor prefix: o	Yes Prefixed Yes Prefixed Prefixed Implemented with the vendor prefix: webkit
`requestPointerLock`	Yes Yes Yes Prefixed Prefixed Implemented with the vendor prefix: webkit	Yes	50 50 Yes Prefixed Prefixed Implemented with the vendor prefix: moz	?	?	?
`runtimeStyle`	No	No	No	6	No	No
`scrollIntoView`	29	12 12 No support for `smooth` behavior.	1	8 8 No support for `smooth` behavior or `center` options.	38	5 5 No support for `smooth` behavior or `center` options.
`scrollIntoViewIfNeeded`	Yes	No	No	No	Yes	Yes
`scrollHeight`	4	Yes	21 21 3 — 21 In Firefox versions prior to 21, when an element's content does not generate a vertical scrollbar, then its `scrollHeight` property is equal to its `clientHeight` property. This can mean either the content is too short to require a scrollbar or that the element has a CSS style `overflow` value of `visible` (non-scrollable).	8	Yes	4
`scrollLeft`	Yes	Yes	Yes	Yes	Yes	Yes
`scrollLeftMax`	No	No	16	No	No	No
`scrollTop`	Yes	Yes	Yes	Yes	Yes	Yes
`scrollTopMax`	No	No	16	No	No	No
`scrollWidth`	Yes	?	?	?	Yes	?
`setAttribute`	Yes	?	?	?	Yes	?
`setAttributeNS`	Yes	?	?	?	Yes	?
`setAttributeNode`	Yes	?	?	?	Yes	?
`setAttributeNodeNS`	?	Yes Yes Returns a `ClientRectList` with ClientRect objects (which do not contain `x` and `y` properties) instead of `DOMRect` objects.	Yes	Yes Yes Returns a `ClientRectList` with ClientRect objects (which do not contain `x` and `y` properties) instead of `DOMRect` objects.	?	?
`setCapture`	No	?	?	?	No	?
`setPointerCapture`	55	?	59 59 41 Disabled Disabled From version 41: this feature is behind the `dom.w3c_pointer_events.enabled` preference (needs to be set to `true`). To change preferences in Firefox, visit about:config.	11 11 10 Prefixed Prefixed Implemented with the vendor prefix: ms	42	No
`shadowRoot`	53	No No Under consideration	63 63 59 Disabled See bug 1205323 Disabled From version 59: this feature is behind the `dom.webcomponents.shadowdom.enabled` preference (needs to be set to `true`). To change preferences in Firefox, visit about:config.	No	40	Yes
`slot`	53	?	?	?	?	?
`tabStop`	43	?	?	?	?	?
`tagName`	Yes	Yes	Yes	Yes	Yes	Yes
`toggleAttribute`	69	18	63	?	56	?

	Mobile
	Android webview	Chrome for Android	Edge Mobile	Firefox for Android	Opera for Android	iOS Safari	Samsung Internet
Basic support	Yes	18	Yes	4	Yes	Yes	Yes
`accessKey`	No No Implemented on HTMLElement.	No No Implemented on HTMLElement.	?	?	No No Implemented on HTMLElement.	?	?
`animate`	37	36	?	48	23	?	?
`attachShadow`	53	53	No No Under consideration	63 63 59 Disabled See bug 1205323 Disabled From version 59: this feature is behind the `dom.webcomponents.shadowdom.enabled` preference (needs to be set to `true`). To change preferences in Firefox, visit about:config.	40	10	?
`attributes`	Yes	Yes	?	22	?	?	?
`classList`	Yes	Yes	12	Yes	?	5	?
`className`	Yes	Yes	Yes	Yes	Yes	Yes	Yes
`clientHeight`	Yes	Yes	Yes	Yes	Yes	Yes	Yes
`clientLeft`	Yes	Yes	?	?	Yes	?	?
`clientTop`	Yes	Yes	?	?	Yes	?	?
`clientWidth`	Yes	Yes	Yes	Yes	Yes	Yes	Yes
`closest`	?	?	?	35	?	9	?
`computedStyleMap`	66	66	No	No	53	No	?
`createShadowRoot`	37 37 In version 45, the ability to have multiple shadow roots was deprecated. ? — ? Prefixed Prefixed Implemented with the vendor prefix: webkit	35 35 In Chrome 45, the ability to have multiple shadow roots was deprecated. 25 — ? Prefixed Prefixed Implemented with the vendor prefix: webkit	No	59 — 61 Disabled 59 — 61 Disabled Disabled From version 59 until version 61 (exclusive): this feature is behind the `dom.webcomponents.shadowdom.enabled` preference (needs to be set to `true`). To change preferences in Firefox, visit about:config. 29 — 59 Disabled Disabled From version 29 until version 59 (exclusive): this feature is behind the `dom.webcomponents.enabled` preference (needs to be set to `true`). To change preferences in Firefox, visit about:config.	22 22 In Opera 32, the ability to have multiple shadow roots was deprecated. 14 — ? Prefixed Prefixed Implemented with the vendor prefix: webkit	No	5.0 5.0 4.0 — ? Prefixed Prefixed Implemented with the vendor prefix: webkit
`currentStyle`	No	No	No	No	No	No	No
`getAttribute`	?	?	?	23	?	?	?
`getAttributeNS`	Yes	Yes	Yes	Yes	Yes	Yes	Yes
`getAttributeNames`	61	61	?	45	48	?	?
`getAttributeNode`	Yes	Yes	?	?	Yes	?	?
`getAttributeNodeNS`	Yes	Yes	?	?	Yes	?	?
`getBoundingClientRect`	Yes	Yes	Yes	4	Yes	4 4 Safari for iOS will modify the effective viewport based on the user zoom. This results in incorrect values whenever the user has zoomed.	?
`getClientRects`	Yes	Yes	?	?	Yes	?	?
`getElementsByClassName`	?	?	?	?	?	?	?
`getElementsByTagName`	Yes	?	Yes	Yes Yes Prior to Firefox 19, this method was returning a `NodeList`; it was then changed to reflect the change in the spec.	Yes	Yes	Yes
`getElementsByTagNameNS`	Yes	?	Yes	Yes Yes The behavior of `element.getElementsByTagNameNS` changed between Firefox 3.5 and Firefox 3.6. In Firefox 3.5 and before, this function would automatically case-fold any queries so that a search for "foo" would match "Foo" or "foo". In Firefox 3.6 and later this function is now case-sensitive so that a query for "foo" will only match "foo" and not "Foo". For more background on this, please see the comment from Henri Sivonen about the change. You can also look at the relevant part of the standard, which states which parts of the API are case-sensitive and which parts aren't. Prior to Firefox 19, this method was returning a `NodeList`; it was then changed to reflects the spec change.	Yes	Yes	?
`hasAttribute`	Yes	Yes	Yes	Yes	Yes	Yes	Yes
`hasAttributeNS`	Yes	Yes	?	?	Yes	?	?
`hasAttributes`	?	?	?	?	?	?	?
`id`	Yes	Yes	Yes	Yes	Yes	Yes	Yes
`innerHTML`	Yes	18	12	4	Yes	1	1.0
`insertAdjacentElement`	2.3	18	12	48	Yes	Yes	Yes
`insertAdjacentHTML`	2.3	18	12	8	Yes	4	Yes
`insertAdjacentText`	2.3	18	12	48	Yes	Yes	Yes
`localName`	?	?	?	48 48 This API was previously available on the`Node` API.	?	?	?
`matches`	Yes Yes Yes Uses the non-standard name: `webkitMatchesSelector`	34 34 Yes Uses the non-standard name: `webkitMatchesSelector`	Yes Yes Yes Uses the non-standard name: `webkitMatchesSelector` Yes Uses the non-standard name: `msMatchesSelector`	34 34 44 Uses the non-standard name: `webkitMatchesSelector` 4 See bug 1119718 for removal. Uses the non-standard name: `mozMatchesSelector`	21 21 15 Uses the non-standard name: `webkitMatchesSelector` 11.5 — 15 Uses the non-standard name: `oMatchesSelector`	8 8 Yes Uses the non-standard name: `webkitMatchesSelector`	Yes Yes Yes Uses the non-standard name: `webkitMatchesSelector`
`name`	No	No	?	?	No	?	?
`namespaceURI`	?	?	?	Yes	?	?	?
`openOrClosedShadowRoot`	No	No	No	63 63 Available only to WebExtensions.	No	No	No
`onfullscreenchange`	57	57	?	64	?	?	?
`onfullscreenerror`	57	57	?	64	?	?	?
`ongotpointercapture`	55	55	?	No No 41 Disabled Disabled From version 41: this feature is behind the `dom.w3c_pointer_events.enabled` preference (needs to be set to `true`). To change preferences in Firefox, visit about:config.	42	No	?
`onlostpointercapture`	55	55	?	No No 41 Disabled Disabled From version 41: this feature is behind the `dom.w3c_pointer_events.enabled` preference (needs to be set to `true`). To change preferences in Firefox, visit about:config.	42	No	?
`outerHTML`	Yes	Yes	Yes	Yes	Yes	Yes	Yes
`prefix`	?	?	Yes	48 48 This API was previously available on the`Node` API.	?	?	?
`querySelector`	Yes	Yes	Yes	Yes	Yes	Yes	Yes
`querySelectorAll`	Yes	Yes	Yes	Yes	?	Yes	Yes
`releasePointerCapture`	55	55	?	No No 41 Disabled Disabled From version 41: this feature is behind the `dom.w3c_pointer_events.enabled` preference (needs to be set to `true`). To change preferences in Firefox, visit about:config.	42	No	?
`removeAttribute`	Yes	Yes	?	?	Yes	?	?
`removeAttributeNS`	Yes	Yes	?	?	Yes	?	?
`removeAttributeNode`	Yes	Yes	?	?	Yes	?	?
`requestFullscreen`	Yes Prefixed Yes Prefixed Prefixed Implemented with the vendor prefix: webkit	Yes Prefixed Yes Prefixed Prefixed Implemented with the vendor prefix: webkit	Yes Prefixed Yes Prefixed Prefixed Implemented with the vendor prefix: webkit	64 64 47 Disabled Disabled From version 47: this feature is behind the `full-screen-api.unprefix.enabled` preference (needs to be set to `true`). To change preferences in Firefox, visit about:config. 9 Before Firefox 44, Firefox incorrectly allowed elements inside a `<frame>` or an `<object>` to request, and to be granted, fullscreen. In Firefox 44 and onwards this has been fixed: only elements in the top-level document or in an `<iframe>` with the `allowfullscreen` attribute can be displayed fullscreen. Uses the non-standard name: `mozRequestFullScreen`	14 Prefixed 14 Prefixed Prefixed Implemented with the vendor prefix: webkit 12 — 14 Prefixed Prefixed Implemented with the vendor prefix: o	Yes Prefixed Yes Prefixed Prefixed Implemented with the vendor prefix: webkit	Yes Prefixed Yes Prefixed Prefixed Implemented with the vendor prefix: webkit
`requestPointerLock`	Yes Yes Yes Prefixed Prefixed Implemented with the vendor prefix: webkit	?	Yes	?	?	?	?
`runtimeStyle`	No	No	No	No	No	No	No
`scrollIntoView`	Yes	Yes	?	4	Yes	5 5 No support for `smooth` behavior or `center` options.	?
`scrollIntoViewIfNeeded`	Yes	Yes	No	No	Yes	Yes	?
`scrollHeight`	Yes	Yes	Yes	Yes	Yes	4	Yes
`scrollLeft`	Yes	Yes	Yes	Yes	Yes	Yes	Yes
`scrollLeftMax`	No	No	No	16	No	No	No
`scrollTop`	Yes	Yes	Yes	Yes	Yes	Yes	Yes
`scrollTopMax`	No	No	No	16	No	No	No
`scrollWidth`	Yes	Yes	?	?	Yes	?	?
`setAttribute`	Yes	Yes	?	?	Yes	?	?
`setAttributeNS`	Yes	Yes	?	?	Yes	?	?
`setAttributeNode`	Yes	Yes	?	?	Yes	?	?
`setAttributeNodeNS`	?	?	?	?	?	?	?
`setCapture`	No	No	?	?	No	?	?
`setPointerCapture`	55	55	?	No No 41 Disabled Disabled From version 41: this feature is behind the `dom.w3c_pointer_events.enabled` preference (needs to be set to `true`). To change preferences in Firefox, visit about:config.	42	No	?
`shadowRoot`	53	53	No No Under consideration	63 63 59 Disabled See bug 1205323 Disabled From version 59: this feature is behind the `dom.webcomponents.shadowdom.enabled` preference (needs to be set to `true`). To change preferences in Firefox, visit about:config.	40	Yes	?
`slot`	53	53	?	?	?	?	?
`tabStop`	?	43	?	?	?	?	?
`tagName`	?	?	Yes	Yes	?	?	?
`toggleAttribute`	69	69	?	63	56	?	?

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