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    Element

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    The Element interface represents an object of a Document. This interface describes methods and properties common to all kinds of elements. Specific behaviors are described in interfaces which inherit from Element but add additional functionality. For example, the HTMLElement interface is the base interface for HTML elements, while the SVGElement interface is the basis for all SVG elements.

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

    Properties

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

    Element.attributes 只读
    Returns a NamedNodeMap that lists all attributes associated with the element.
    ParentNode.childElementCount
    Is a Number representing the number of child nodes that are elements.
    ParentNode.children
    Is a live HTMLCollection containing all child elements of the element, as a collection.
    Element.classList 只读
    Returns a DOMTokenList containing the list of class attributes.
    Element.className
    Is a DOMString representing the class of the element.
    Element.clientHeight 只读
    Returns a Number representing the inner height of the element.
    Element.clientLeft 只读
    Returns a Number representing the width of the left border of the element.
    Element.clientTop 只读
    Returns a Number representing the width of the top border of the element.
    Element.clientWidth 只读
    Returns a Number representing the inner width of the element.
    ParentNode.firstElementChild
    Is a Element, the first direct child element of an element, or null if the element has no child elements.
    Element.id
    Is a DOMString representing the id of the element.
    Element.innerHTML
    Is a DOMString representing the markup of the element's content.
    ParentNode.lastElementChild
    Is a Element, the last direct child element of an element, or null if the element has no child elements.
    NonDocumentTypeChildNode.nextElementSibling
    Is a 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.
    NonDocumentTypeChildNode.previousElementSibling
    Is a Element, the element immediately preceding the given one in the tree, or null if there is no sibling element.
    Element.scrollHeight 只读
    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 只读
    Returns a Number representing the maximum left scroll offset possible for the element.
    Element.scrollTop
    Is a Number representing the top scroll offset the an element.
    Element.scrollTopMax 只读
    Returns aNumber representing the maximum top scroll offset possible for the element.
    Element.scrollWidth 只读
    Returns a Number representing the scroll view width of the element.
    Element.shadowRoot 只读
    ...
    Element.tagName 只读
    Returns a String with the name of the tag for the given element.
    Element.undoManager 只读
    Returns the UndoManager associated with the element.
    Element.undoScope
    Is a Boolean indicating if the element is an undo scope host, or not.

    Event handlers

    Element.ongotpointercapture
    Element.onlostpointercapture
    Element.onwheel
    Returns the event handling code for the wheel event.

    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.closest()
    Returns the Element, descendant of this element (or this element itself), that is the closest ancestor of the elements selected by the selectors given in parameter.
    Element.createShadowRoot()
    EventTarget.dispatchEvent()
    Dispatches an event to this node in the DOM and returns a Boolean that indicates that at least one handler has not canceled it.
    Element.find()
    ...
    Element.findAll()
    ...
    Animatable.getAnimationPlayers()
    Element.getAttribute()
    Retrieves the value of the named attribute from the current node and returns it as an Object.
    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()
    Retrievse 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()
    ...
    Element.getClientRects() TYPE of returnvalue????
    Returns a collection of rectangles that indicate the bounding rectangles for each line of text in a client.
    Element.getDestinationInsertionPoints()
    Element.getElementsByClassName()
    Returns a live HTMLCollection that contains all descendant of the current element that posses the list of classes given in 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.insertAdjacentHTML
    Parses the text as HTML or XML and inserts the resulting nodes into the tree in the position given.
    Element.matches()
    Returns a Boolean indicating whether or not the element would be selected by the specified selector string.
    Element.querySelector()
    Returns Node...
    Element.querySelectorAll
    Returns a NodeList...
    Element.releasePointerCapture
    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.scrollIntoView()
    Scrolls the page until the element gets into the view.
    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()
    Setw 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()

    Specifications

    Specification Status Comment
    Web Animations 1.0 Working Draft Added the getAnimationPlayers() method.
    UndoManager and DOMTransaction
    Element
    Editor's Draft Added the undoScope and undoManager properties.
    Pointer Events
    Element
    Proposed Recommendation Added the following event handlers: ongotpointercapture and onlostpointercapture.
    Added the following methods: setPointerCapture() and releasePointerCapture().
    Selectors API Level 2
    Element
    Working Draft Added the following methods: matches() (implemented as mozMatchesSelector()), find(), findAll().
    Selectors API Level 1
    Element
    Recommendation Added the following methods: querySelector() and querySelectorAll().
    Pointer Lock
    Element
    Candidate Recommendation Added the requestPointerLock() method.
    Fullscreen API
    Element
    Living Standard Added the requestFullscreen() method.
    DOM Parsing and Serialization
    Element
    Living Standard Added the following properties: innerHTML, and outerHTML.
    Added the following method: insertAdjacentHTML().
    CSS Object Model (CSSOM) View Module
    Element
    Working Draft Added the following properties: scrollTop, scrollLeft, scrollWidth, scrollHeight, clientTop, clientLeft, clientWidth, and clientHeight.
    Added the following methods: getClientRects(), getBoundingClientRect(), and scrollIntoView().
    Element Traversal Specification
    Element
    Recommendation Added inheritance of the ElementTraversal interface.
    DOM
    Element
    Living Standard Removed the following methods: closest(), setIdAttribute(), setIdAttributeNS(), and setIdAttributeNode().
    Removed the schemaTypeInfo property.
    Modified the return value of getElementsByTag() and getElementsByTagNS().
    Moved hasAttributes() form the Node interface to this one.
    Document Object Model (DOM) Level 3 Core Specification
    Element
    Recommendation 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
    Element
    Recommendation The normalize() method has been moved to Node.
    Document Object Model (DOM) Level 1 Specification
    Element
    Recommendation Initial definition.

    Browser compatibility

    Feature Chrome Firefox (Gecko) Internet Explorer Opera Safari (WebKit)
    Basic support 1.0 1.0 (1.7 or earlier) (Yes) (Yes) 1.0
    children (Yes) 3.0 (1.9) 7.0 with a significant bug [1]
    9.0 according to the spec
    (Yes) 未实现
    childElementCount, nextElementSibling, previousElementSibling (Yes) 3.5 (1.9.1) 9.0 (Yes) (Yes)
    firstElementChild, lastElementChild (Yes) 3.0 (1.9) 9.0 (Yes) (Yes)
    classList (Yes) 3.6 (1.9.2) (Yes) (Yes)
    outerHTML (Yes) 11 (11) (Yes) (Yes) (Yes)
    clientLeft, clientTop (Yes) 3.5 (1.9.1) (Yes) (Yes) (Yes)
    getBoundingClientRect(), getClientRects() (Yes) 3.0 (1.9) (Yes) (Yes) (Yes)
    querySelector(), querySelectorAll() 1.0 3.5 (1.9.1) 8.0 10.0 3.2 (525.3)
    insertAdjacentHTML() 1.0 8 (8) 4.0 7.0 4.0 (527)
    setCapture() 未实现 4.0 (2) 未实现 未实现 未实现
    oncopy, oncut, onpaste 未实现 3.0 (1.9) (Yes) 未实现
    onwheel 未实现 17 (17) 未实现 未实现 未实现
    ongotpointercapture, onlostpointercapture, setPointerCapture(), and releasePointerCapture() 未实现 未实现 10.0 MS 未实现 未实现
    matches() (Yes) with the non-standard name webkitMatchesSelector 3.6 (1.9.2) with the non-standard name mozMatchesSelector
    34 (34) with the standard name
    9.0 with the non-standard name msMatchesSelector 11.5 with the non-standard name oMatchesSelector
    15.0 with the non-standard name webkitMatchesSelector
    5.0 with the non-standard name webkitMatchesSelector
    find() and findAll() 未实现 未实现 未实现 未实现 未实现
    requestPointerLock() 16.0 webkit, behind an about:flags
    22.0 webkit (with special cases, progressively lifted see [2])
    14 (14)moz 未实现 未实现 未实现
    requestFullscreen() 14.0 webkit 10 (10) moz 11.0 ms 12.10
    15.0 webkit
    5.1 webkit
    undoManager and undoScope 未实现 (Yes) (behind the dom.undo_manager.enabled pref) 未实现 未实现 未实现
    attributes ? 22 (22)
    Before this it was available via the Node interface that any element inherits.
    ? ? ?
    scrollTopMax() and scrollLeftMax() 未实现 16 (16) 未实现 未实现 未实现
    closest() ? 35 (35) ? ? ?
    hasAttributes() (Yes) 1.0 (1.7 or earlier) (on the Node interface)
    35 (35) (on this interface
    (Yes) (Yes) (Yes)
    Feature Android Firefox Mobile (Gecko) IE Phone Opera Mobile Safari Mobile
    Basic support 1.0 1.0 (1) (Yes) (Yes) 1.0
    scrollTopMax() and scrollLeftMax() 未实现 16.0 (16) 未实现 未实现 未实现
    closest() ? 35.0 (35) ? ? ?
    hasAttributes() (Yes) 1.0 (1.0) (on the Node interface)
    35.0 (35) (on this interface
    (Yes) (Yes) (Yes)

    [1] Internet Explorer 7 and 8 incorrectly return the comments as part of the children of an Element. This is fixed in Internet Explorer 9 and later.

    [2] Chrome 16 allowed webkitRequestPointerLock() only in fullscreen; Chrome 21 for trusted web site (permission asked); Chrome 22 allowed it by default for all same-origin document; Chrome 23 allowed it in sandboxed <iframe> if the non-standard value webkit-allow-pointer-lock is set to the sandbox attribute.

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