Element
Element
is the most general base class from which all element objects (i.e. objects that represent elements) 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. Similarly, the SVGElement
interface is the basis for all SVG elements, and the MathMLElement
interface is the base interface for MathML 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
.
Instance properties
Element
inherits properties from its parent interface, Node
, and by extension that interface's parent, EventTarget
.
Element.assignedSlot
Read only-
Returns a
HTMLSlotElement
representing the<slot>
the node is inserted in. Element.attributes
Read only-
Returns a
NamedNodeMap
object containing the assigned attributes of the corresponding HTML element. Element.childElementCount
Read only-
Returns the number of child elements of this element.
Element.children
Read only-
Returns the child elements of this element.
Element.classList
Read only-
Returns a
DOMTokenList
containing the list of class attributes. Element.className
-
A string 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.currentCSSZoom
Read only-
A number indicating the effective zoom size of the element, or 1.0 if the element is not rendered.
Element.elementTiming
Experimental-
A string reflecting the
elementtiming
attribute which marks an element for observation in thePerformanceElementTiming
API. Element.firstElementChild
Read only-
Returns the first child element of this element.
Element.id
-
A string representing the id of the element.
Element.innerHTML
-
A string representing the markup of the element's content.
Element.lastElementChild
Read only-
Returns the last child element of this element.
Element.localName
Read only-
A string 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. Element.nextElementSibling
Read only-
An
Element
, the element immediately following the given one in the tree, ornull
if there's no sibling node. Element.outerHTML
-
A string 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.part
-
Represents the part identifier(s) of the element (i.e. set using the
part
attribute), returned as aDOMTokenList
. Element.prefix
Read only-
A string representing the namespace prefix of the element, or
null
if no prefix is specified. Element.previousElementSibling
Read only-
An
Element
, the element immediately preceding the given one in the tree, ornull
if there is no sibling element. Element.scrollHeight
Read only-
Returns a number representing the scroll view height of an element.
Element.scrollLeft
-
A number representing the left scroll offset of the element.
Element.scrollLeftMax
Non-standard 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 element is scrolled vertically.
Element.scrollTopMax
Non-standard 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.shadowRoot
Read only-
Returns the open shadow root that is hosted by the element, or null if no open shadow root is present.
Element.slot
-
Returns the name of the shadow DOM slot the element is inserted in.
Element.tagName
Read only-
Returns a string with the name of the tag for the given element.
Instance properties included from ARIA
The Element
interface also includes the following properties.
Element.ariaAtomic
-
A string reflecting the
aria-atomic
attribute, which indicates whether assistive technologies will present all, or only parts of, the changed region based on the change notifications defined by thearia-relevant
attribute. Element.ariaAutoComplete
-
A string reflecting the
aria-autocomplete
attribute, which indicates whether inputting text could trigger display of one or more predictions of the user's intended value for a combobox, searchbox, or textbox and specifies how predictions would be presented if they were made. Element.ariaBrailleLabel
-
A string reflecting the
aria-braillelabel
attribute, which defines the braille label of the element. Element.ariaBrailleRoleDescription
-
A string reflecting the
aria-brailleroledescription
attribute, which defines the ARIA braille role description of the element. Element.ariaBusy
-
A string reflecting the
aria-busy
attribute, which indicates whether an element is being modified, as assistive technologies may want to wait until the modifications are complete before exposing them to the user. Element.ariaChecked
-
A string reflecting the
aria-checked
attribute, which indicates the current "checked" state of checkboxes, radio buttons, and other widgets that have a checked state. Element.ariaColCount
-
A string reflecting the
aria-colcount
attribute, which defines the number of columns in a table, grid, or treegrid. Element.ariaColIndex
-
A string reflecting the
aria-colindex
attribute, which defines an element's column index or position with respect to the total number of columns within a table, grid, or treegrid. Element.ariaColIndexText
-
A string reflecting the
aria-colindextext
attribute, which defines a human readable text alternative of aria-colindex. Element.ariaColSpan
-
A string reflecting the
aria-colspan
attribute, which defines the number of columns spanned by a cell or gridcell within a table, grid, or treegrid. Element.ariaCurrent
-
A string reflecting the
aria-current
attribute, which indicates the element that represents the current item within a container or set of related elements. Element.ariaDescription
-
A string reflecting the
aria-description
attribute, which defines a string value that describes or annotates the current element. Element.ariaDisabled
-
A string reflecting the
aria-disabled
attribute, which indicates that the element is perceivable but disabled, so it is not editable or otherwise operable. Element.ariaExpanded
-
A string reflecting the
aria-expanded
attribute, which indicates whether a grouping element owned or controlled by this element is expanded or collapsed. Element.ariaHasPopup
-
A string reflecting the
aria-haspopup
attribute, which indicates the availability and type of interactive popup element, such as menu or dialog, that can be triggered by an element. -
A string reflecting the
aria-hidden
attribute, which indicates whether the element is exposed to an accessibility API. Element.ariaKeyShortcuts
-
A string reflecting the
aria-keyshortcuts
attribute, which indicates keyboard shortcuts that an author has implemented to activate or give focus to an element. Element.ariaLabel
-
A string reflecting the
aria-label
attribute, which defines a string value that labels the current element. Element.ariaLevel
-
A string reflecting the
aria-level
attribute, which defines the hierarchical level of an element within a structure. Element.ariaLive
-
A string reflecting the
aria-live
attribute, which indicates that an element will be updated, and describes the types of updates the user agents, assistive technologies, and user can expect from the live region. Element.ariaModal
-
A string reflecting the
aria-modal
attribute, which indicates whether an element is modal when displayed. Element.ariaMultiline
-
A string reflecting the
aria-multiline
attribute, which indicates whether a text box accepts multiple lines of input or only a single line. Element.ariaMultiSelectable
-
A string reflecting the
aria-multiselectable
attribute, which indicates that the user may select more than one item from the current selectable descendants. Element.ariaOrientation
-
A string reflecting the
aria-orientation
attribute, which indicates whether the element's orientation is horizontal, vertical, or unknown/ambiguous. Element.ariaPlaceholder
-
A string reflecting the
aria-placeholder
attribute, which defines a short hint intended to aid the user with data entry when the control has no value. Element.ariaPosInSet
-
A string reflecting the
aria-posinset
attribute, which defines an element's number or position in the current set of listitems or treeitems. Element.ariaPressed
-
A string reflecting the
aria-pressed
attribute, which indicates the current "pressed" state of toggle buttons. Element.ariaReadOnly
-
A string reflecting the
aria-readonly
attribute, which indicates that the element is not editable, but is otherwise operable. Element.ariaRelevant
Non-standard-
A string reflecting the
aria-relevant
attribute, which indicates what notifications the user agent will trigger when the accessibility tree within a live region is modified. This is used to describe what changes in anaria-live
region are relevant and should be announced. Element.ariaRequired
-
A string reflecting the
aria-required
attribute, which indicates that user input is required on the element before a form may be submitted. Element.ariaRoleDescription
-
A string reflecting the
aria-roledescription
attribute, which defines a human-readable, author-localized description for the role of an element. Element.ariaRowCount
-
A string reflecting the
aria-rowcount
attribute, which defines the total number of rows in a table, grid, or treegrid. Element.ariaRowIndex
-
A string reflecting the
aria-rowindex
attribute, which defines an element's row index or position with respect to the total number of rows within a table, grid, or treegrid. Element.ariaRowIndexText
-
A string reflecting the
aria-rowindextext
attribute, which defines a human readable text alternative of aria-rowindex. Element.ariaRowSpan
-
A string reflecting the
aria-rowspan
attribute, which defines the number of rows spanned by a cell or gridcell within a table, grid, or treegrid. Element.ariaSelected
-
A string reflecting the
aria-selected
attribute, which indicates the current "selected" state of elements that have a selected state. Element.ariaSetSize
-
A string reflecting the
aria-setsize
attribute, which defines the number of items in the current set of listitems or treeitems. Element.ariaSort
-
A string reflecting the
aria-sort
attribute, which indicates if items in a table or grid are sorted in ascending or descending order. Element.ariaValueMax
-
A string reflecting the
aria-valueMax
attribute, which defines the maximum allowed value for a range widget. Element.ariaValueMin
-
A string reflecting the
aria-valueMin
attribute, which defines the minimum allowed value for a range widget. Element.ariaValueNow
-
A string reflecting the
aria-valueNow
attribute, which defines the current value for a range widget. Element.ariaValueText
-
A string reflecting the
aria-valuetext
attribute, which defines the human-readable text alternative of aria-valuenow for a range widget.
Instance methods
Element
inherits methods from its parents Node
, and its own parent, EventTarget
.
Element.after()
-
Inserts a set of
Node
objects or strings in the children list of theElement
's parent, just after theElement
. Element.animate()
-
A shortcut method to create and run an animation on an element. Returns the created Animation object instance.
Element.append()
-
Inserts a set of
Node
objects or strings after the last child of the element. Element.attachShadow()
-
Attaches a shadow DOM tree to the specified element and returns a reference to its
ShadowRoot
. Element.before()
-
Inserts a set of
Node
objects or strings in the children list of theElement
's parent, just before theElement
. Element.checkVisibility()
-
Returns whether an element is expected to be visible or not based on configurable checks.
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.computedStyleMap()
-
Returns a
StylePropertyMapReadOnly
interface which provides a read-only representation of a CSS declaration block that is an alternative toCSSStyleDeclaration
. 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 a string.
Element.getAttributeNames()
-
Returns an array of attribute names from the current element.
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.getAttributeNS()
-
Retrieves the value of the attribute with the specified namespace and name from the current node and returns it as a string.
Element.getBoundingClientRect()
-
Returns the size of an element and its position relative to the viewport.
Element.getBoxQuads()
Experimental-
Returns a list of
DOMQuad
objects representing the CSS fragments of the node. 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 value indicating if the element has the specified attribute or not.
Element.hasAttributeNS()
-
Returns a boolean value indicating if the element has the specified attribute, in the specified namespace, or not.
Element.hasAttributes()
-
Returns a boolean value 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 value indicating whether or not the element would be selected by the specified selector string.
Element.prepend()
-
Inserts a set of
Node
objects or strings before the first child of the element. 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
PointerEvent
. Element.remove()
-
Removes the element from the children list of its parent.
Element.removeAttribute()
-
Removes the named attribute from the current node.
Element.removeAttributeNode()
-
Removes the node representation of the named attribute from the current node.
Element.removeAttributeNS()
-
Removes the attribute with the specified name and namespace, from the current node.
Element.replaceChildren()
-
Replaces the existing children of a
Node
with a specified new set of children. Element.replaceWith()
-
Replaces the element in the children list of its parent with a set of
Node
objects or strings. Element.requestFullscreen()
-
Asynchronously asks the browser to make the element fullscreen.
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.scrollIntoViewIfNeeded()
Non-standard-
Scrolls the current element into the visible area of the browser window if it's not already within the visible area of the browser window. Use the standard
Element.scrollIntoView()
instead. 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.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.setAttributeNS()
-
Sets the value of the attribute with the specified name and namespace, from the current node.
Element.setCapture()
Non-standard Deprecated-
Sets up mouse event capture, redirecting all mouse events to this element.
Element.setHTMLUnsafe()
-
Parses a string of HTML into a document fragment, without sanitization, which then replaces the element's original subtree in the DOM. The HTML string may include declarative shadow roots, which would be parsed as template elements if the HTML was set using
Element.innerHTML
. 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.
Events
Listen to these events using addEventListener()
or by assigning an event listener to the oneventname
property of this interface.
afterscriptexecute
Non-standard-
Fired when a script has been executed.
beforematch
Experimental-
Fires on an element that is in the hidden until found state, when the browser is about to reveal its content because the user has found the content through the "find in page" feature or through fragment navigation.
beforescriptexecute
Non-standard-
Fired when a script is about to be executed.
contentvisibilityautostatechange
-
Fires on any element with
content-visibility: auto
set on it when it starts or stops being relevant to the user and skipping its contents. scroll
-
Fired when the document view or an element has been scrolled.
scrollend
-
Fires when the document view has completed scrolling.
securitypolicyviolation
-
Fired when a Content Security Policy is violated.
wheel
-
Fired when the user rotates a wheel button on a pointing device (typically a mouse).
Animation events
animationcancel
-
Fired when an animation unexpectedly aborts.
animationend
-
Fired when an animation has completed normally.
animationiteration
-
Fired when an animation iteration has completed.
animationstart
-
Fired when an animation starts.
Clipboard events
Composition events
compositionend
-
Fired when a text composition system such as an input method editor completes or cancels the current composition session.
compositionstart
-
Fired when a text composition system such as an input method editor starts a new composition session.
compositionupdate
-
Fired when a new character is received in the context of a text composition session controlled by a text composition system such as an input method editor.
Focus events
Fullscreen events
fullscreenchange
-
Sent to an
Element
when it transitions into or out of fullscreen mode. fullscreenerror
-
Sent to an
Element
if an error occurs while attempting to switch it into or out of fullscreen mode.
Keyboard events
Mouse events
auxclick
-
Fired when a non-primary pointing device button (e.g., any mouse button other than the left button) has been pressed and released on an element.
click
-
Fired when a pointing device button (e.g., a mouse's primary button) is pressed and released on a single element.
-
Fired when the user attempts to open a context menu.
dblclick
-
Fired when a pointing device button (e.g., a mouse's primary button) is clicked twice on a single element.
DOMActivate
Deprecated-
Occurs when an element is activated, for instance, through a mouse click or a keypress.
DOMMouseScroll
Deprecated Non-standard-
Occurs when mouse wheel or similar device is operated and the accumulated scroll amount is over 1 line or 1 page since last event.
mousedown
-
Fired when a pointing device button is pressed on an element.
mouseenter
-
Fired when a pointing device (usually a mouse) is moved over the element that has the listener attached.
mouseleave
-
Fired when the pointer of a pointing device (usually a mouse) is moved out of an element that has the listener attached to it.
mousemove
-
Fired when a pointing device (usually a mouse) is moved while over an element.
mouseout
-
Fired when a pointing device (usually a mouse) is moved off the element to which the listener is attached or off one of its children.
mouseover
-
Fired when a pointing device is moved onto the element to which the listener is attached or onto one of its children.
mouseup
-
Fired when a pointing device button is released on an element.
mousewheel
Deprecated Non-standard-
Fired when a mouse wheel or similar device is operated.
MozMousePixelScroll
Deprecated Non-standard-
Fired when a mouse wheel or similar device is operated.
webkitmouseforcechanged
Non-standard-
Fired each time the amount of pressure changes on the trackpadtouchscreen.
webkitmouseforcedown
Non-standard-
Fired after the mousedown event as soon as sufficient pressure has been applied to qualify as a "force click".
webkitmouseforcewillbegin
Non-standard-
Fired before the
mousedown
event. webkitmouseforceup
Non-standard-
Fired after the
webkitmouseforcedown
event as soon as the pressure has been reduced sufficiently to end the "force click".
Pointer events
gotpointercapture
-
Fired when an element captures a pointer using
setPointerCapture()
. lostpointercapture
-
Fired when a captured pointer is released.
pointercancel
-
Fired when a pointer event is canceled.
pointerdown
-
Fired when a pointer becomes active.
pointerenter
-
Fired when a pointer is moved into the hit test boundaries of an element or one of its descendants.
pointerleave
-
Fired when a pointer is moved out of the hit test boundaries of an element.
pointermove
-
Fired when a pointer changes coordinates.
pointerout
-
Fired when a pointer is moved out of the hit test boundaries of an element (among other reasons).
pointerover
-
Fired when a pointer is moved into an element's hit test boundaries.
pointerrawupdate
Experimental-
Fired when a pointer changes any properties that don't fire
pointerdown
orpointerup
events. pointerup
-
Fired when a pointer is no longer active.
Touch events
gesturechange
Non-standard-
Fired when digits move during a touch gesture.
gestureend
Non-standard-
Fired when there are no longer multiple fingers contacting the touch surface, thus ending the gesture.
gesturestart
Non-standard-
Fired when multiple fingers contact the touch surface, thus starting a new gesture.
touchcancel
-
Fired when one or more touch points have been disrupted in an implementation-specific manner (for example, too many touch points are created).
touchend
-
Fired when one or more touch points are removed from the touch surface.
touchmove
-
Fired when one or more touch points are moved along the touch surface.
touchstart
-
Fired when one or more touch points are placed on the touch surface.
Transition events
transitioncancel
-
An
Event
fired when a CSS transition has been cancelled. transitionend
-
An
Event
fired when a CSS transition has finished playing. transitionrun
-
An
Event
fired when a CSS transition is created (i.e., when it is added to a set of running transitions), though not necessarily started. transitionstart
-
An
Event
fired when a CSS transition has started transitioning.
Specifications
Browser compatibility
BCD tables only load in the browser