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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, 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

Element inherits properties from its parent interface, Node, and by extension that interface's parent, EventTarget.

Element.assignedSlotRead 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: 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.firstElementChild Read only: Returns the first child element of this 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.lastElementChild Read only: Returns the last child element of this element.
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.
Element.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.openOrClosedShadowRoot Non-Standard Read only: Returns the shadow root that is hosted by the element, regardless if its open or closed. Only available to WebExtensions.
Element.part: Represents the part identifier(s) of the element (i.e. set using the part attribute), returned as a DOMTokenList.
Element.prefix Read only: A DOMString 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, 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 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.shadowRootRead 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.

Properties included from ARIA

The Element interface includes the following properties, defined on the ARIAMixin mixin.

Element.ariaAtomic: Is a DOMString 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 the aria-relevant attribute.
Element.ariaAutoComplete: Is a DOMString 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.ariaBusy: Is a DOMString 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: Is a DOMString 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: Is a DOMString reflecting the aria-colcount attribute, which defines the number of columns in a table, grid, or treegrid.
Element.ariaColIndex: Is a DOMString 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: Is a DOMString reflecting the aria-colindextext attribute, which defines a human readable text alternative of aria-colindex.
Element.ariaColSpan: Is a DOMString 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: Is a DOMString reflecting the aria-current attribute, which indicates the element that represents the current item within a container or set of related elements.
Element.ariaDescription: Is a DOMString reflecting the aria-description attribute, which defines a string value that describes or annotates the current element.
Element.ariaDisabled: Is a DOMString reflecting the aria-disabled attribute, which indicates that the element is perceivable but disabled, so it is not editable or otherwise operable.
Element.ariaExpanded: Is a DOMString reflecting the aria-expanded attribute, which indicates whether a grouping element owned or controlled by this element is expanded or collapsed.
Element.ariaHasPopup: Is a DOMString 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.
Element.ariaHidden: Is a DOMString reflecting the aria-hidden attribute, which indicates whether the element is exposed to an accessibility API.
Element.ariaKeyShortcuts: Is a DOMString reflecting the aria-keyshortcuts attribute, which indicates keyboard shortcuts that an author has implemented to activate or give focus to an element.
Element.ariaLabel: Is a DOMString reflecting the aria-label attribute, which defines a string value that labels the current element.
Element.ariaLevel: Is a DOMString reflecting the aria-level attribute, which defines the hierarchical level of an element within a structure.
Element.ariaLive: Is a DOMString 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: Is a DOMString reflecting the aria-modal attribute, which indicates whether an element is modal when displayed.
Element.ariaMultiline: Is a DOMString reflecting the aria-multiline attribute, which indicates whether a text box accepts multiple lines of input or only a single line.
Element.ariaMultiSelectable: Is a DOMString reflecting the aria-multiselectable attribute, which indicates that the user may select more than one item from the current selectable descendants.
Element.ariaOrientation: Is a DOMString reflecting the aria-orientation attribute, which indicates whether the element's orientation is horizontal, vertical, or unknown/ambiguous.
Element.ariaPlaceholder: Is a DOMString 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: Is a DOMString reflecting the aria-posinset attribute, which defines an element's number or position in the current set of listitems or treeitems.
Element.ariaPressed: Is a DOMString reflecting the aria-pressed attribute, which indicates the current "pressed" state of toggle buttons.
Element.ariaReadOnly: Is a DOMString reflecting the aria-readonly attribute, which indicates that the element is not editable, but is otherwise operable.
Element.ariaRelevant: Is a DOMString 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 an aria-live region are relevant and should be announced.
Element.ariaRequired: Is a DOMString reflecting the aria-required attribute, which indicates that user input is required on the element before a form may be submitted.
Element.ariaRoleDescription: Is a DOMString reflecting the aria-roledescription attribute, which defines a human-readable, author-localized description for the role of an element.
Element.ariaRowCount: Is a DOMString reflecting the aria-rowcount attribute, which defines the total number of rows in a table, grid, or treegrid.
Element.ariaRowIndex: Is a DOMString 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: Is a DOMString reflecting the aria-rowindextext attribute, which defines a human readable text alternative of aria-rowindex.
Element.ariaRowSpan: Is a DOMString 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: Is a DOMString reflecting the aria-selected attribute, which indicates the current "selected" state of elements that have a selected state.
Element.ariaSetSize: Is a DOMString reflecting the aria-setsize attribute, which defines the number of items in the current set of listitems or treeitems.
Element.ariaSort: Is a DOMString reflecting the aria-sort attribute, which indicates if items in a table or grid are sorted in ascending or descending order.
Element.ariaValueMax: Is a DOMString reflecting the aria-valueMax attribute, which defines the maximum allowed value for a range widget.
Element.ariaValueMin: Is a DOMString reflecting the aria-valueMin attribute, which defines the minimum allowed value for a range widget.
Element.ariaValueNow: Is a DOMString reflecting the aria-valueNow attribute, which defines the current value for a range widget.
Element.ariaValueText: Is a DOMString reflecting the aria-valuetext attribute, which defines the human readable text alternative of aria-valuenow for a range widget.

Methods

Element inherits methods from its parents Node, and its own parent, EventTarget.

EventTarget.addEventListener(): Registers an event handler to a specific event type on the element.
Element.after(): Inserts a set of Node or DOMString objects in the children list of the Element's parent, just after the Element.
Element.attachShadow(): Attaches a shadow DOM tree to the specified element and returns a reference to its ShadowRoot.
Element.animate() Experimental: 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 DOMString objects after the last child of the element.
Element.before(): Inserts a set of Node or DOMString objects in the children list of the Element's parent, just before the Element.
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() Non-Standard Deprecated: Creates a shadow DOM on the element, turning it into a shadow host. Returns a ShadowRoot.
Element.computedStyleMap() Experimental: 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 value that indicates whether no handler canceled the event.
Element.getAnimations() Experimental: 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 DOMString objects 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 pointer event.
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.
EventTarget.removeEventListener(): Removes an event listener from the element.
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 or DOMString objects.
Element.requestFullscreen() Experimental: Asynchronously asks the browser to make the element fullscreen.
Element.requestPointerLock() Experimental: 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() Experimental: 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.setHTML() Experimental: Parses and sanitizes a string of HTML and inserts into the DOM as a subtree of the 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.

Events

Listen to these events using addEventListener() or by assigning an event listener to the oneventname property of this interface.

cancel: Fires on a <dialog> when the user instructs the browser that they wish to dismiss the current open dialog. For example, the browser might fire this event when the user presses the Esc key or clicks a "Close dialog" button which is part of the browser's UI. Also available via the oncancel property.
error: Fired when a resource failed to load, or can't be used. For example, if a script has an execution error or an image can't be found or is invalid. Also available via the onerror property.
scroll: Fired when the document view or an element has been scrolled. Also available via the onscroll property.
securitypolicyviolation: Fired when a Content Security Policy is violated. Also available via the global onsecuritypolicyviolation property, which available on elements and the Document and Window objects.
select: Fired when some text has been selected. Also available via the onselect property.
show Deprecated: Fired when a contextmenu event was fired on/bubbled to an element that has a contextmenu attribute. Also available via the onshow property.
wheel: Fired when the user rotates a wheel button on a pointing device (typically a mouse). Also available via the onwheel property.

Clipboard events

copy: Fired when the user initiates a copy action through the browser's user interface. Also available via the oncopy property.
cut: Fired when the user initiates a cut action through the browser's user interface. Also available via the oncut property.
paste: Fired when the user initiates a paste action through the browser's user interface. Also available via the onpaste property.

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

blur: Fired when an element has lost focus. Also available via the onblur property.
focus: Fired when an element has gained focus. Also available via the onfocus property
focusin: Fired when an element is about to gain focus.
focusout: Fired when an element is about to lose focus.

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

keydown: Fired when a key is pressed. Also available via the onkeydown property.
keypress Deprecated: Fired when a key that produces a character value is pressed down. Also available via the onkeypress property.
keyup: Fired when a key is released. Also available via the onkeyup property.

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. Also available via the onauxclick property.
click: Fired when a pointing device button (e.g., a mouse's primary button) is pressed and released on a single element. Also available via the onclick property.
contextmenu: Fired when the user attempts to open a context menu. Also available via the oncontextmenu property.
dblclick: Fired when a pointing device button (e.g., a mouse's primary button) is clicked twice on a single element. Also available via the ondblclick property.
DOMActivate Deprecated: Occurs when an element is activated, for instance, through a mouse click or a keypress.
mousedown: Fired when a pointing device button is pressed on an element. Also available via the onmousedown property.
mouseenter: Fired when a pointing device (usually a mouse) is moved over the element that has the listener attached. Also available via the onmouseenter property.
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. Also available via the onmouseleave property.
mousemove: Fired when a pointing device (usually a mouse) is moved while over an element. Also available via the onmousemove property.
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. Also available via the onmouseout property.
mouseover: Fired when a pointing device is moved onto the element to which the listener is attached or onto one of its children. Also available via the onmouseover property.
mouseup: Fired when a pointing device button is released on an element. Also available via the onmouseup property.
webkitmouseforcechanged: Fired each time the amount of pressure changes on the trackpadtouchscreen.
webkitmouseforcedown: Fired after the mousedown event as soon as sufficient pressure has been applied to qualify as a "force click".
webkitmouseforcewillbegin: Fired before the mousedown event.
webkitmouseforceup: Fired after the webkitmouseforcedown event as soon as the pressure has been reduced sufficiently to end the "force click".

Touch events

touchcancel: Fired when one or more touch points have been disrupted in an implementation-specific manner (for example, too many touch points are created). Also available via the ontouchcancel property.
touchend: Fired when one or more touch points are removed from the touch surface. Also available via the ontouchend property
touchmove: Fired when one or more touch points are moved along the touch surface. Also available via the ontouchmove property
touchstart: Fired when one or more touch points are placed on the touch surface. Also available via the ontouchstart property

Specifications

Specification
DOM Standard # interface-element
Pointer Events # extensions-to-the-element-interface
Pointer Lock 2.0 # extensions-to-the-element-interface
Fullscreen API Standard # api
DOM Parsing and Serialization # extensions-to-the-element-interface
CSSOM View Module # extension-to-the-element-interface

Browser compatibility

	Desktop						Mobile
	Chrome	Edge	Firefox	Internet Explorer	Opera	Safari	WebView Android	Chrome Android	Firefox for Android	Opera Android	Safari on IOS	Samsung Internet
`Element`	1	12	1	4	8	1	1	18	4	10.1	1	1.0
`DOMActivate_event`	1	79	1	No	15	1	1	18	4	14	1	1.0
`DOMMouseScroll_event`	No	No	1	No	No	No	No	No	4	No	No	No
`MozMousePixelScroll_event`	No	No	6	No	No	No	No	No	6	No	No	No
`MSGestureChange_event`	No	12-79	No	10	No	No	No	No	No	No	No	No
`MSGestureEnd_event`	No	12-79	No	10	No	No	No	No	No	No	No	No
`MSGestureHold_event`	No	12-79	No	10	No	No	No	No	No	No	No	No
`MSGestureStart_event`	No	12-79	No	10	No	No	No	No	No	No	No	No
`MSGestureTap_event`	No	12-79	No	10	No	No	No	No	No	No	No	No
`MSInertiaStart_event`	No	12-79	No	10	No	No	No	No	No	No	No	No
`MSManipulationStateChanged_event`	No	12-79	No	11	No	No	No	No	No	No	No	No
`after`	54	17	49	No	39	10	54	54	49	41	10	6.0
`afterscriptexecute_event`	No	No	2	No	No	No	No	No	4	No	No	No
`animate`	36	79	48	No	23	13.1	37	36	48	24	13.4	3.0
`assignedSlot`	53	79	63	No	40	10.1	53	53	63	41	10.3	6.0
`attachShadow`	53	79	63	No	40	10	53	53	63	41	10	6.0
`attributes`	1	12	1	5.5	8	1	1	18	4	10.1	1	1.0
`auxclick_event`	55	79	53 Starting in Firefox 68, the `auxclick` event is used to trigger the new tab on middle-click action; previously, this had been done with the `click` event. Apps can prevent middle-click from opening new tabs (or middle-click to paste, if that feature is enabled) by intercepting `auxclick` on links, and `auxclick` event handlers can now open popups without triggering the popup blocker.	No	42	No	55	55	53	42	No	6.0
`before`	54	17	49	No	39	10	54	54	49	41	10	6.0
`beforescriptexecute_event`	No	No	2	No	No	No	No	No	4	No	No	No
`blur_event`	1	12	24 6-24 The interface for this event is `Event`, not `FocusEvent`.	9	11.6	3.1	1	18	24 6-24 The interface for this event is `Event`, not `FocusEvent`.	12.1	2	1.0
`classList`	22 8-22 Not supported for SVG elements.	16 12-16 Not supported for SVG elements.	3.6	10 Not supported for SVG elements.	11.5	7 6-7 Not supported for SVG elements.	4.4 3-4.4 Not supported for SVG elements.	25 18-25 Not supported for SVG elements.	4	11.5	7 6-7 Not supported for SVG elements.	1.5 1.0-1.5 Not supported for SVG elements.
`className`	22 1-22 Only supported for `HTMLElement`, not all `Element` objects, such as `SVGElement`.	12	1	5	8	1	≤37 1-≤37 Only supported for `HTMLElement`, not all `Element` objects, such as `SVGElement`.	25 18-25 Only supported for `HTMLElement`, not all `Element` objects, such as `SVGElement`.	4	10.1	1	1.5 1.0-1.5 Only supported for `HTMLElement`, not all `Element` objects, such as `SVGElement`.
`click_event`	1	12	6 Beginning in Firefox 68, Firefox no longer incorrectly sends a `click` event for buttons other than the primary mouse button; previouly, there were circumstances in which this would occur. One example: middle-clicking a link would send a `click` to the document's `<html>` element.	9	11.6	3	1	18	6	12.1	1	1.0
`clientHeight`	1	12	1	5	8	3	1	18	4	10.1	1	1.0
`clientLeft`	1	12	3	5	8	3	1	18	4	10.1	1	1.0
`clientTop`	1	12	3	5	8	3	1	18	4	10.1	1	1.0
`clientWidth`	1	12	1	5	8	3	1	18	4	10.1	1	1.0
`closest`	41	15	35	No	28	6	41	41	35	28	9	4.0
`compositionend_event`	15	12	9	11	≤15	5	≤37	18	9	≤14	5	1.0
`compositionstart_event`	15	12	9	11	≤15	5	≤37	18	9	≤14	5	1.0
`compositionupdate_event`	18	12	9	11	15	5	≤37	18	9	14	5	1.0
`computedStyleMap`	66	79	No	No	53	No	66	66	No	47	No	9.0
`contextmenu_event`	1	12	6	9	10.5	3	1	18	6	11.1	No See bug 213953.	1.0
`copy_event`	1	12	22	9 Before Internet Explorer 9, this event is not supported via `addEventListener`; however, the event handler is supported since IE 5.5. The event can be listened to via `element.oncopy`.	15	3	1	18	22	14	3	1.0
`createShadowRoot`	35 In Chrome 45, the ability to have multiple shadow roots was deprecated. 25-36	79	No	No	22 In Opera 32, the ability to have multiple shadow roots was deprecated. 15-23	No	37 In version 45, the ability to have multiple shadow roots was deprecated. 4.4-37	35 In Chrome 45, the ability to have multiple shadow roots was deprecated. 25-36	No	22 In Opera 32, the ability to have multiple shadow roots was deprecated. 14-24	No	3.0 In Samsung Internet 5.0, the ability to have multiple shadow roots was deprecated. 1.5-3.0
`cut_event`	1	12	22	9 Before Internet Explorer 9, this event is not supported via `addEventListener`; however, the event handler is supported since IE 5.5. The event can be listened to via `element.oncopy`.	15	3	1	18	22	14	3	1.0
`dblclick_event`	1	12	6 Starting in Firefox 68, `dblclick` events are only sent for the primary mouse button, per the specification.	8	11.6	3	No	No	6	12.1	1	No
`elementTiming`	77	79	No	No	64	No	77	77	No	55	No	12.0
`error_event`	1	12	1	9	≤12.1	1	1	18	4	≤12.1	1	1.0
`focus_event`	1	12	24 6-24 The interface for this event is `Event`, not `FocusEvent`.	9	11.6	3.1	1	18	24 6-24 The interface for this event is `Event`, not `FocusEvent`.	12.1	2	1.0
`focusin_event`	1	12	52	9	11.6	5	≤37	18	52	12.1	4.2	1.0
`focusout_event`	1	12	52	9	11.6	5	≤37	18	52	12.1	4.2	1.0
`fullscreenchange_event`	71 15	79 12 12-14	64 10	No	58 15 12.1-15	5.1	71 ≤37	71 18	64 10	50 14 12.1-14	12 Only available on iPad, not on iPhone.	10.0 1.0
`fullscreenerror_event`	71 18	79 12 12-14	64 10	No	58 15 12.1-15	6	71 ≤37	71 18	64 10	50 14 12.1-14	12 Only available on iPad, not on iPhone.	10.0 1.0
`gesturechange_event`	No	No	No	No	No	9.1	No	No	No	No	2	No
`gestureend_event`	No	No	No	No	No	9.1	No	No	No	No	2	No
`gesturestart_event`	No	No	No	No	No	9.1	No	No	No	No	2	No
`getAnimations`	84	84	75	No	70	13.1	84	84	79	60	13.4	14.0
`getAttribute`	1	12	1	5	8	1	1	18	4	10.1	1	1.0
`getAttributeNames`	61	18	45	No	48	10.1	61	61	45	45	10.3	8.0
`getAttributeNode`	1	12	1	6	≤12.1	1	1	18	4	≤12.1	1	1.0
`getAttributeNodeNS`	1	12	1	9	≤12.1	1	1	18	4	≤12.1	1	1.0
`getAttributeNS`	1	12	1 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.	9	≤12.1	1	1	18	4 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.	≤12.1	1	1.0
`getBoundingClientRect`	2	12	3	4	9.5	4	2	18	4	10.1	3.2 Safari for iOS will modify the effective viewport based on the user zoom. This results in incorrect values whenever the user has zoomed.	1.0
`getClientRects`	2	12	3	5	9.5	4	2	18	4	10.1	3.2	1.0
`getElementsByClassName`	1	16 12-16 Only supported for `HTMLElement`, not all `Element` objects, such as `SVGElement`.	3 Before Firefox 19, this method was returning a `NodeList`; it was then changed to reflect the change in the spec.	9 Only supported for `HTMLElement`, not all `Element` objects, such as `SVGElement`.	9.5	6	1	18	4	10.1	6	1.0
`getElementsByTagName`	1 Initially, this method was returning a `NodeList`; it was then changed to reflect the spec change.	12	1 Before Firefox 19, this method was returning a `NodeList`; it was then changed to reflect the change in the spec.	5.5	8 Initially, this method was returning a `NodeList`; it was then changed to reflect the spec change.	1 Initially, this method was returning a `NodeList`; it was then changed to reflect the spec change.	1 Initially, this method was returning a `NodeList`; it was then changed to reflect the spec change.	18 Initially, this method was returning a `NodeList`; it was then changed to reflect the spec change.	4 Before Firefox 19, this method was returning a `NodeList`; it was then changed to reflect the change in the spec.	10.1	1 Initially, this method was returning a `NodeList`; it was then changed to reflect the spec change.	1.0 Initially, this method was returning a `NodeList`; it was then changed to reflect the spec change.
`getElementsByTagNameNS`	1 Initially, this method was returning a `NodeList`; it was then changed to reflect the spec change.	12	1 ["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.", "Before Firefox 19, this method was returning a `NodeList`; it was then changed to reflects the spec change."]	9	≤12.1 Initially, this method was returning a `NodeList`; it was then changed to reflect the spec change.	1 Initially, this method was returning a `NodeList`; it was then changed to reflect the spec change.	1 Initially, this method was returning a `NodeList`; it was then changed to reflect the spec change.	18 Initially, this method was returning a `NodeList`; it was then changed to reflect the spec change.	4 Before Firefox 19, this method was returning a `NodeList`; it was then changed to reflects the spec change.	≤12.1 Initially, this method was returning a `NodeList`; it was then changed to reflect the spec change.	1 Initially, this method was returning a `NodeList`; it was then changed to reflect the spec change.	1.0 Initially, this method was returning a `NodeList`; it was then changed to reflect the spec change.
`hasAttribute`	1	12	1	8	8	1	1	18	4	10.1	1	1.0
`hasAttributeNS`	1	12	1	9	≤12.1	1	1	18	4	≤12.1	1	1.0
`hasAttributes`	1	12	1 Before Firefox 35, it was implemented on the `Node` interface.	8	≤12.1	1	1	18	4 Before Firefox 35, it was implemented on the `Node` interface.	≤12.1	1	1.0
`hasPointerCapture`	55	79	59	No	42	13	55	55	79	42	13	6.0
`id`	23 1-23 Only supported for `HTMLElement`, not all `Element` objects, such as `SVGElement`.	12	1	5	≤12.1	1	≤37 1-≤37 Only supported for `HTMLElement`, not all `Element` objects, such as `SVGElement`.	25 18-25 Only supported for `HTMLElement`, not all `Element` objects, such as `SVGElement`.	4	≤12.1	1	1.5 1.0-1.5 Only supported for `HTMLElement`, not all `Element` objects, such as `SVGElement`.
`innerHTML`	33 This API was previously available on the `Node` API.	12	1	4	8	9 This API was previously available on the `Node` API.	4.4 This API was previously available on the `Node` API.	33 This API was previously available on the `Node` API.	4	10.1	9 This API was previously available on the `Node` API.	2.0 This API was previously available on the `Node` API.
`insertAdjacentElement`	1	17 12-17 Only supported for `HTMLElement`, not all `Element` objects, such as `SVGElement`.	48	5 Only supported for `HTMLElement`, not all `Element` objects, such as `SVGElement`.	8	3	1	18	48	10.1	1	1.0
`insertAdjacentHTML`	1	17 12-17 Only supported for `HTMLElement`, not all `Element` objects, such as `SVGElement`.	8	4 ["Before Internet Explorer 10, throws an \"Invalid target element for this operation.\" error when called on a `<table>`, `<tbody>`, `<thead>`, or `<tr>` element.", "Only supported for `HTMLElement`, not all `Element` objects, such as `SVGElement`."]	8	4	≤37	18	8	10.1	4	1.0
`insertAdjacentText`	1	17 12-17 Only supported for `HTMLElement`, not all `Element` objects, such as `SVGElement`.	48	5 Only supported for `HTMLElement`, not all `Element` objects, such as `SVGElement`.	≤12.1	4	2.2	18	48	≤12.1	4	1.0
`keydown_event`	1	12	6	9	≤12.1	1.2	1	18	6	≤12.1	1	1.0
`keypress_event`	1 Chrome does not fire the `keypress` event for known keyboard shortcuts. Which keyboard shortcuts are known depends on the user's system. Use the `keydown` event to implement keyboard shortcuts.	12	6 As of Firefox 65, the `keypress` event is no longer fired for non-printable keys, except for the Enter key, and the Shift + Enter and Ctrl + Enter key combinations (these were kept for cross-browser compatibility purposes).	9	≤12.1 Opera does not fire the `keypress` event for known keyboard shortcuts. Which keyboard shortcuts are known depends on the user's system. Use the `keydown` event to implement keyboard shortcuts.	1.3	1 Chrome does not fire the `keypress` event for known keyboard shortcuts. Which keyboard shortcuts are known depends on the user's system. Use the `keydown` event to implement keyboard shortcuts.	18 Chrome does not fire the `keypress` event for known keyboard shortcuts. Which keyboard shortcuts are known depends on the user's system. Use the `keydown` event to implement keyboard shortcuts.	6 As of Firefox 65, the `keypress` event is no longer fired for non-printable keys, except for the Enter key, and the Shift + Enter and Ctrl + Enter key combinations (these were kept for cross-browser compatibility purposes).	≤12.1 Opera does not fire the `keypress` event for known keyboard shortcuts. Which keyboard shortcuts are known depends on the user's system. Use the `keydown` event to implement keyboard shortcuts.	1	1.0 Samsung Internet does not fire the `keypress` event for known keyboard shortcuts. Which keyboard shortcuts are known depends on the user's system. Use the `keydown` event to implement keyboard shortcuts.
`keyup_event`	1	12	6	9	≤12.1	1.2	1	18	6	≤12.1	1	1.0
`localName`	1	12	1	9	≤12.1	1	1	18	4	≤12.1	1	1.0
`matches`	33 4	15 12 12	44 34 3.6 ["Before Firefox 4, invalid selector strings caused false to be returned instead of throwing an exception.", "See bug 1119718 for removal."]	9	21 15 11.5-15	7 5	≤37 4.4	33 18	44 34 4 See bug 1119718 for removal.	21 14 11.5-14	8 4.2	2.0 1.0
`mousedown_event`	2	12	6	9	11.6	4	≤37	18	6	12.1	3.2	1.0
`mouseenter_event`	30	12	10	5.5	17	7	≤37	30	10	18	7	2.0
`mouseleave_event`	30	12	10	5.5	17	7	≤37	30	10	18	7	2.0
`mousemove_event`	2	12	6	9	11.6	4	≤37	18	6	12.1	3.2	1.0
`mouseout_event`	1	12	6	9	≤12.1	1	≤37	18	6	≤12.1	1	1.0
`mouseover_event`	2	12	6	9	9.5	4	≤37	18	6	10.1	3.2	1.0
`mouseup_event`	2	12	6	9	11.6	4	≤37	18	6	12.1	3.2	1.0
`mousewheel_event`	1	12	No	9	≤15	3	1	18	No	≤14	1	1.0
`msContentZoom_event`	No	12-79	No	11	No	No	No	No	No	No	No	No
`namespaceURI`	1	12	1	9	≤12.1	1	1	18	4	≤12.1	1	1.0
`nextElementSibling`	1	12	3.5	9	10	4	≤37	18	4	10.1	3	1.0
`openOrClosedShadowRoot`	No	No	63 Available only to WebExtensions.	No	No	No	No	No	63 Available only to WebExtensions.	No	No	No
`outerHTML`	33 This API was previously available on the `Node` API.	12	11	4	8	9	4.4 This API was previously available on the `Node` API.	33 This API was previously available on the `Node` API.	14	10.1	9	2.0 This API was previously available on the `Node` API.
`part`	73	79	72 71	No	60	13.1	73	73	79	52	13.4	11.0
`paste_event`	1	12	22	9 ["Before Internet Explorer 11, copying files does not trigger the `paste` event.", "Before Internet Explorer 9, this event is not supported via `addEventListener`; however, the event handler is supported since IE 5.5. The event can be listened to via `element.oncopy`."]	15	3	≤37	18	22	14	3	1.0
`prefix`	1	12	1	9	≤12.1	1	1	18	4	≤12.1	1	1.0
`previousElementSibling`	1	12	3.5	9	10	4	≤37	18	4	10.1	3	1.0
`releasePointerCapture`	55	12	59	11 10	42	13	55	55	79	42	13	6.0
`remove`	24	12	23	No	15	7	4.4	25	23	14	7	1.5
`removeAttribute`	1	12 This function doesn't respect boolean attributes' default values. See bug 12087679.	1	5	8	1	1	18	4	10.1	1	1.0
`removeAttributeNode`	1	12	1	6	≤12.1	1	1	18	4	≤12.1	1	1.0
`removeAttributeNS`	1	12	1	9	≤12.1	1	1	18	4	≤12.1	1	1.0
`replaceWith`	54	17	49	No	39	10	54	54	49	41	10	6.0
`requestFullscreen`	71 15	79 12 12-14	64 9 Before Firefox 44, Firefox incorrectly allowed elements inside a `<frame>` or `<object>` element 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>` element with the `allowfullscreen` attribute can be displayed fullscreen.	11	58 15 12.1-15	5.1	71 ≤37	71 18	64 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.	50 14 12.1-14	12 Only available on iPad, not on iPhone. Shows an overlay button which can not be disabled.	10.0 1.0
`requestPointerLock`	37 From version 92, returns a promise instead of `undefined`. The behavior reflects a proposed specification change. 22-38	13 From version 92, returns a promise instead of `undefined`. The behavior reflects a proposed specification change.	50 14-50	No	24 From version 78, returns a promise instead of `undefined`. The behavior reflects a proposed specification change. 15-25	10.1	37 From version 92, returns a promise instead of `undefined`. The behavior reflects a proposed specification change. ≤37-38	37 From version 92, returns a promise instead of `undefined`. The behavior reflects a proposed specification change. 25-38	50 14-50	24 From version 65, returns a promise instead of `undefined`. The behavior reflects a proposed specification change. 14-25	No	3.0 From version 16, returns a promise instead of `undefined`. The behavior reflects a proposed specification change. 1.5-3.0
`scroll`	61	79	36	No	48	10.1	61	61	36	45	10.3	8.0
`scroll_event`	1	12	6	9	≤12.1	1.3	1	18	6	≤12.1	1	1.0
`scrollBy`	61	79	36	No	48	10.1	61	61	36	45	10.3	8.0
`scrollHeight`	1	12	21 3-21 Before Firefox 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).	5 In Internet Explorer 5 through 7, if padding is set, the value of `scrollHeight` is equal to the sum of the top and bottom padding. This behavior was fixed in Internet Explorer 8.	8	1	1	18	21 4-21 Before Firefox 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).	10.1	1	1.0
`scrollIntoView`	1	79 17-79 The only parameter supported is `alignToTop`. 12-17 ["Only supported for `HTMLElement`, not all `Element` objects, such as `SVGElement`.", "No support for `smooth` behavior."]	1	5 ["Only supported for `HTMLElement`, not all `Element` objects, such as `SVGElement`.", "No support for `smooth` behavior or `center` options."]	≤12.1	3 ["No support for `center` option.", "Before Safari 15.4, there was no support for the `smooth` behavior."]	1	18	4	≤12.1	1 ["No support for `center` option.", "Before iOS 15.4, there was no support for the `smooth` behavior."]	1.0
`scrollIntoViewIfNeeded`	1	79	No	No	15	3	1	18	No	14	1	1.0
`scrollLeft`	1 For right-to-left elements, this property uses 0-100 (most left to most right) instead of negative values. See bug 721759.	12 ["From Edge 79, for right-to-left elements, this property uses 0-100 (most left to most right) instead of negative values. See bug 721759.", "Before Edge 79, for right-to-left elements, this property uses 100-0 (most left to most right) instead of negative values."]	1	5 For right-to-left elements, this property uses 100-0 (most left to most right) instead of negative values.	8	1	1 For right-to-left elements, this property uses 0-100 (most left to most right) instead of negative values. See bug 721759.	18 For right-to-left elements, this property uses 0-100 (most left to most right) instead of negative values. See bug 721759.	4	10.1	1	1.0 For right-to-left elements, this property uses 0-100 (most left to most right) instead of negative values. See bug 721759.
`scrollLeftMax`	No	No	16	No	No	No	No	No	16	No	No	No
`scrollTo`	61	79	36	No	48	10.1	61	61	36	45	10.3	8.0
`scrollTop`	1	12	1	5	8	1	1	18	4	10.1	1	1.0
`scrollTopMax`	No	No	16	No	No	No	No	No	16	No	No	No
`scrollWidth`	1	12	1	5 In Internet Explorer 5 through 7, if padding is set, the value of `scrollWidth` is equal to the sum of the left and right padding. This behavior was fixed in Internet Explorer 8.	≤12.1	1	1	18	4	≤12.1	1	1.0
`securitypolicyviolation_event`	41	15	63	No	28	10	41	41	63	28	10	4.0
`select_event`	1	12	6	9	≤12.1	1	1	18	6	≤12.1	1	1.0
`setAttribute`	1	12	1	5 In Internet Explorer 7 and earlier, `setAttribute` doesn't set styles and removes events when you try to set them.	8	1	1	18	4	10.1	1	1.0
`setAttributeNode`	1	12	1	6	≤12.1	1	1	18	4	≤12.1	1	1.0
`setAttributeNodeNS`	1	12 Returns a `ClientRectList` with ClientRect objects (which do not contain `x` and `y` properties) instead of `DOMRect` objects.	1	9 Returns a `ClientRectList` with ClientRect objects (which do not contain `x` and `y` properties) instead of `DOMRect` objects.	≤12.1	1	1	18	4	≤12.1	1	1.0
`setAttributeNS`	1	12	1	9	≤12.1	1	1	18	4	≤12.1	1	1.0
`setCapture`	No	12-79	4	5 The `retargetToElement` parameter to `Element.setCapture()` was introduced in Internet Explorer 5.5.	No	No	No	No	4	No	No	No
`setHTML`	93	93	94	No	79	No	No	No	No	No	No	No
`setPointerCapture`	55	12	59 Before Firefox 82, `setPointerCapture()` throws `InvalidPointerId` for an invalid `pointerId` argument. From Firefox 82, it throws the specified `NotFoundError` exception. See bug 1662124.	11 10	42	13	55	55	79 Before Firefox 82, `setPointerCapture()` throws `InvalidPointerId` for an invalid `pointerId` argument. From Firefox 82, it throws the specified `NotFoundError` exception. See bug 1662124.	42	13	6.0
`shadowRoot`	35	79	63	No	22	10	37	35	63	22	10	3.0
`show_event`	No	No	85 8-85	No	No	No	No	No	8-85	No	No	No
`slot`	53	79	63	No	40	10	53	53	63	41	10	6.0
`tagName`	1	12	1	5	8	1	1	18	4	10.1	1	1.0
`toggleAttribute`	69	18	63	No	56	12	69	69	63	48	12	10.0
`touchcancel_event`	22	12	52	No	No	No	≤37	25	6	14	≤3	1.5
`touchend_event`	22	12	52	No	No	No	≤37	25	6	14	≤3	1.5
`touchmove_event`	22	12	52	No	No	No	≤37	25	6	14	≤3	1.5
`touchstart_event`	22	12	52	No	No	No	≤37	25	6	14	≤3	1.5
`webkitmouseforcechanged_event`	No	No	No	No	No	9	No	No	No	No	No	No
`webkitmouseforcedown_event`	No	No	No	No	No	9	No	No	No	No	No	No
`webkitmouseforceup_event`	No	No	No	No	No	9	No	No	No	No	No	No
`webkitmouseforcewillbegin_event`	No	No	No	No	No	9	No	No	No	No	No	No
`wheel_event`	61	12	17	9 Internet Explorer only exposes the wheel event via `addEventListener`; there is no `onwheel` attribute on DOM objects. See IE bug 782835.	48	7	61	61	17	45	7	8.0
`ariaAtomic`	81	81	No	No	68	12.1	81	81	No	58	12.2	13.0
`ariaAutoComplete`	81	81	No	No	68	12.1	81	81	No	58	12.2	13.0
`ariaBusy`	81	81	No	No	68	12.1	81	81	No	58	12.2	13.0
`ariaChecked`	81	81	No	No	68	12.1	81	81	No	58	12.2	13.0
`ariaColCount`	81	81	No	No	68	12.1	81	81	No	58	12.2	13.0
`ariaColIndex`	81	81	No	No	68	12.1	81	81	No	58	12.2	13.0
`ariaColSpan`	81	81	No	No	68	12.1	81	81	No	58	12.2	13.0
`ariaCurrent`	81	81	No	No	68	12.1	81	81	No	58	12.2	13.0
`ariaDescription`	83	83	No	No	69	No	83	83	No	59	No	13.0
`ariaDisabled`	81	81	No	No	68	12.1	81	81	No	58	12.2	13.0
`ariaExpanded`	81	81	No	No	68	12.1	81	81	No	58	12.2	13.0
`ariaHasPopup`	81	81	No	No	68	12.1	81	81	No	58	12.2	13.0
`ariaHidden`	81	81	No	No	68	12.1	81	81	No	58	12.2	13.0
`ariaInvalid`	No	No	No	No	No	12.1	No	No	No	No	12.2	No
`ariaKeyShortcuts`	81	81	No	No	68	12.1	81	81	No	58	12.2	13.0
`ariaLabel`	81	81	No	No	68	12.1	81	81	No	58	12.2	13.0
`ariaLevel`	81	81	No	No	68	12.1	81	81	No	58	12.2	13.0
`ariaLive`	81	81	No	No	68	12.1	81	81	No	58	12.2	13.0
`ariaModal`	81	81	No	No	68	12.1	81	81	No	58	12.2	13.0
`ariaMultiLine`	81	81	No	No	68	12.1	81	81	No	58	12.2	13.0
`ariaMultiSelectable`	81	81	No	No	68	12.1	81	81	No	58	12.2	13.0
`ariaOrientation`	81	81	No	No	68	12.1	81	81	No	58	12.2	13.0
`ariaPlaceholder`	81	81	No	No	68	12.1	81	81	No	58	12.2	13.0
`ariaPosInSet`	81	81	No	No	68	12.1	81	81	No	58	12.2	13.0
`ariaPressed`	81	81	No	No	68	12.1	81	81	No	58	12.2	13.0
`ariaReadOnly`	81	81	No	No	68	12.1	81	81	No	58	12.2	13.0
`ariaRelevant`	81	81	No	No	68	12.1	81	81	No	58	12.2	13.0
`ariaRequired`	81	81	No	No	68	12.1	81	81	No	58	12.2	13.0
`ariaRoleDescription`	81	81	No	No	68	12.1	81	81	No	58	12.2	13.0
`ariaRowCount`	81	81	No	No	68	12.1	81	81	No	58	12.2	13.0
`ariaRowIndex`	81	81	No	No	68	12.1	81	81	No	58	12.2	13.0
`ariaRowSpan`	81	81	No	No	68	12.1	81	81	No	58	12.2	13.0
`ariaSelected`	81	81	No	No	68	12.1	81	81	No	58	12.2	13.0
`ariaSetSize`	84	84	No	No	70	12.1	84	84	No	60	12.2	14.0
`ariaSort`	81	81	No	No	68	12.1	81	81	No	58	12.2	13.0
`ariaValueMax`	81	81	No	No	68	12.1	81	81	No	58	12.2	13.0
`ariaValueMin`	81	81	No	No	68	12.1	81	81	No	58	12.2	13.0
`ariaValueNow`	81	81	No	No	68	12.1	81	81	No	58	12.2	13.0
`ariaValueText`	81	81	No	No	68	12.1	81	81	No	58	12.2	13.0
`role`	No	No	No	No	No	12.1	No	No	No	No	12.2	No
`getBoxQuads`	No	No	31	No	No	No	No	No	No	No	No	No
`append`	54	17	49	No	41	10	54	54	49	41	10	6.0
`childElementCount`	1	12	3.5	9	10	4	≤37	18	4	10.1	3	1.0
`children`	1	12	3.5	9 6-9 Also includes non-standard `HTMLCommentElement` nodes.	10	4	4.4	18	4	10.1	3	1.0
`firstElementChild`	1	12	3.5	9	10	4	≤37	18	4	10.1	3	1.0
`lastElementChild`	1	12	3.5	9	10	4	≤37	18	4	10.1	3	1.0
`prepend`	54	17	49	No	41	10	54	54	49	41	10	6.0
`querySelector`	1	12	3.5	9 8 `querySelector()` is supported, but only for CSS 2.1 selectors.	10	3.1	1	18	4	10.1	2	1.0
`querySelectorAll`	1	12	3.5	9 8 `querySelectorAll()` is supported, but only for CSS 2.1 selectors.	10	3.1	1	18	4	10.1	2	1.0
`replaceChildren`	86	86	78	No	72	14	86	86	79	61	14	14.0

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https://developer.mozilla.org/en-US/docs/Web/API/Element