Element

Module: JavaScript DOM API

a element in the view

#include <Element.idl>

Inherits from Node, EventTarget

Inherited by HTMLElement, SVGElement

Public Functions

Name
voidsetAttribute(DOMString qualifiedName, DOMString value)
sets the given attribute name to the specified value
voidsetAttributeNS(DOMString ns, DOMString qualifiedName, DOMString value)
sets the given attribute name to the specified value
voidremoveAttribute(DOMString qualifiedName)
removes the specified attribute
voidremoveAttributeNS(DOMString ns, DOMString qualifiedName)
removes the specified attribute
DOMStringgetAttribute(DOMString qualifiedName)
returns the attribute value for the given qualified name
DOMStringgetAttributeNS(DOMString ns, DOMString qualifiedName)
returns the attribute value for the given qualified name
booleanhasAttribute(DOMString qualifiedName)
returns whether the element has an attribute with the given qualified name
booleanhasAttributeNS(DOMString ns, DOMString qualifiedName)
returns whether the element has an attribute with the given qualified name
AttrgetAttributeNode(DOMString qualifiedName)
Returns the specified attribute of the specified element, as an Attr node.
AttrgetAttributeNodeNS(DOMString? namespace, DOMString localName)
Returns the Attr node for the attribute with the given namespace and name.
AttrsetAttributeNode(Attr attr)
Adds a new Attr node to the specified element.
AttrsetAttributeNodeNS(Attr attr)
Adds a new namespaced attribute node to an element.
AttrremoveAttributeNode(Attr attr)
Removes the specified attribute from the current element.
booleanhasAttributes()
Returns Boolean value, indicating if the current element has any attributes or not.
sequenceDOMStringgetAttributeNames()
Must return the qualified names of the attributes in context objects attribute list, in order, and a new list otherwise.
HTMLCollectiongetElementsByTagName(DOMString qualifiedName)
Returns the list of elements with qualified name qualifiedName for context object.
HTMLCollectiongetElementsByTagNameNS(DOMString? namespace, DOMString localName)
Return the list of elements with namespace namespace and local name localName for.
HTMLCollectiongetElementsByClassName(DOMString classNames)
Return the list of elements with class names classNames for context object.
ElementinsertAdjacentElement(DOMString where, Element element)
Inserts a given element node at a given position relative to the element it is invoked upon.
voidinsertAdjacentText(DOMString where, DOMString data)
Inserts a given text node at a given position relative to the element it is invoked upon.
Elementclosest(DOMString selectors)
Returns the closest ancestor of the current element (or the current element itself) which matches the selectors given in parameter. If there isn’t such an ancestor, it returns null.
booleanmatches(DOMString selectors)
Returns true if the element would be selected by the specified selector string; otherwise, returns false.
voidblur()
Removes keyboard focus from this element.
voidfocus()
Gives keyboard focus to this element.
voidinsertAdjacentHTML(DOMString position, DOMString text)
Parses the specified text as HTML or XML and inserts the resulting nodes into the DOM tree at a specified position.
ElementquerySelector(DOMString selectors)
Returns the first element that is a descendant of the element on which it is invoked that matches the specified group of selectors.
NodeListquerySelectorAll(DOMString selectors)
Returns a static (not live) NodeList of all elements descended from the element on which it is invoked that matches the specified group of CSS selectors. (The base element itself is not included, even if it matches.)
sequence< Animation >getAnimations(optional GetAnimationsOptions options)
Returns an array of all the Animation objects that the element has.
DOMRectgetBoundingClientRect()
Returns the bounding rectangle of the element.
DOMRectListgetClientRects()
Returns a collection of the bounding rectangles for each CSS border box in the element.
voidremove()
Removes node Note: This should be part of the ChildNode interface.

Public Attributes

Name
readonly attribute DOMStringtagName
the element tag
readonly attribute DOMStringprefix
Returns the namespace prefix of the specified element, or null if no prefix is specified.
readonly attribute DOMStringnamespaceURI
Returns the namespace URI of the element, or null if the element is not in a namespace.
readonly attribute DOMStringlocalName
returns the local part of the qualified name of an element.
attribute DOMStringslot
Returns the name of the shadow DOM slot attached to the element. A slot is a placeholder inside a web component that users can fill with their own markup.
attribute DOMStringid
the id of the element
readonly attribute longclientTop
Returns the unscaled width of the top border of the element in pixels, ignoring any transforms.
readonly attribute longclientLeft
Returns the unscaled width of the left border of the element in pixels, ignoring any transforms.
readonly attribute longclientWidth
Returns the unscaled width of the padding box of the element, ignoring any transforms.
readonly attribute longclientHeight
Returns the unscaled height of the padding box of the element, ignoring any transforms.
readonly attribute NamedNodeMapattributes
Gets a list of all attributes for the Element.
readonly attribute NodeListchildren
A collection rooted at context object matching only element children. Note: This should be part of the ParentNode interface, which Element implements. Note: The return type should be HTMLCollection.
readonly attribute ElementfirstElementChild
attributes getter must return the first child that is an element, and null otherwise. Note: This should be part of the ParentNode interface, which Element
readonly attribute ElementlastElementChild
attributes getter must return the last child that is an element, and null otherwise. Note: This should be part of the ParentNode interface, which Element
readonly attribute ElementpreviousElementSibling
Returns the Element immediately prior to this node in its parent’s children list, or null if there is no Element in the list prior to this node. Note: This attribute is part of the NonDocumentTypeChildNode interface, which Element implements.
readonly attribute ElementnextElementSibling
Returns the Element immediately following this node in its parent’s children list, or null if there is no Element in the list following this node. Note: This attribute is part of the NonDocumentTypeChildNode interface, which Element implements.
readonly attribute unsigned longchildElementCount
attributes getter must return the number of children of context object that are elements. Note: This should be part of the ParentNode interface, which Element
attribute floatscrollLeft
position of the horizontal scrollbar of the element
attribute floatscrollLeftVW
scrollLeft in VW units The setter converts a given value into PX units based on viewport size
attribute floatscrollLeftVH
scrollLeft in VH units The setter converts a given value into PX units based on viewport size
attribute floatscrollTop
position of the vertical scrollbar of the element
attribute floatscrollTopVW
scrollTop in VW units The setter converts a given value into PX units based on viewport size
attribute floatscrollTopVH
scrollTop in VH units The setter converts a given value into PX units based on viewport size
readonly attribute longscrollWidth
size of the horizontal scrollbar of the element
readonly attribute longscrollWidthVW
scrollWidth converted to VW units
readonly attribute longscrollWidthVH
scrollWidth converted to VH units
readonly attribute longscrollHeight
size of the vertical scrollbar of the element
readonly attribute longscrollHeightVW
scrollHeight converted to VH units
readonly attribute longscrollHeightVH
scrollHeight converted to VH units
attribute DOMStringclassName
all of the classes of the element
readonly attribute DOMTokenListclassList
attribute DOMStringinnerHTML
Gets or sets the contents of the element as HTML.
attribute DOMStringouterHTML
Gets a fragment of HTML or XML that represents the element and its contents.
attribute EventSetterfocusin
attribute EventSetterfocusout
attribute EventSetterabort
attribute EventSetterblur
attribute EventSetterclick
attribute EventSetterauxclick
attribute EventSetterdblclick
attribute EventSettererror
attribute EventSetterfocus
attribute EventSetterkeydown
attribute EventSetterkeypress
attribute EventSetterkeyup
attribute EventSetterload
attribute EventSettermousedown
attribute EventSettermouseover
attribute EventSettermouseout
attribute EventSettermouseenter
attribute EventSettermouseleave
attribute EventSettermousemove
attribute EventSettermouseup
attribute EventSetterinput
attribute EventSetterchange
attribute EventSetterscroll
attribute EventSetterwheel
attribute EventSettertouchstart
attribute EventSettertouchend
attribute EventSettertouchmove
attribute EventSetteranimationstart
attribute EventSetteranimationend
attribute EventSetteranimationcancel
attribute EventSetteranimationiteration
attribute EventSettertransitionstart
attribute EventSettertransitionend
attribute EventSettertransitioncancel
attribute EventSettertransitionrun

Additional inherited members

Public Functions inherited from Node

Name
NoderemoveChild(Node oldChild)
remove a child node
NodeappendChild(Node newChild)
append a node as a child
voidappend((Node or DOMString)… newChildren)
append nodes and string objects as children, where the string objects are inserted as equivalent Text nodes
NodereplaceChild(Node newChild, Node oldChild)
replace oldChild with newChild
NodeinsertBefore(Node node, Node? referenceNode)
insert a node before the reference node, as a child of the current node
NodecloneNode(optional boolean deep =false)
booleanisEqualNode(Node? otherNode)
booleanisSameNode(Node? otherNode)
booleanhasChildNodes()
booleancontains(Node? other)
DOMStringlookupPrefix(DOMString? namespace)
booleanisDefaultNamespace(DOMString? namespace)
voidnormalize()
unsigned shortcompareDocumentPosition(Node other)
NodegetRootNode(optional GetRootNodeOptions options)
DOMStringlookupNamespaceURI(DOMString? prefix)

Public Attributes inherited from Node

Name
const unsigned shortELEMENT_NODE
const unsigned shortATTRIBUTE_NODE
const unsigned shortTEXT_NODE
const unsigned shortCDATA_SECTION_NODE
const unsigned shortENTITY_REFERENCE_NODE
const unsigned shortENTITY_NODE
const unsigned shortPROCESSING_INSTRUCTION_NODE
const unsigned shortCOMMENT_NODE
const unsigned shortDOCUMENT_NODE
const unsigned shortDOCUMENT_TYPE_NODE
const unsigned shortDOCUMENT_FRAGMENT_NODE
const unsigned shortNOTATION_NODE
const unsigned shortDOCUMENT_POSITION_DISCONNECTED
const unsigned shortDOCUMENT_POSITION_PRECEDING
const unsigned shortDOCUMENT_POSITION_FOLLOWING
const unsigned shortDOCUMENT_POSITION_CONTAINS
const unsigned shortDOCUMENT_POSITION_CONTAINED_BY
const unsigned shortDOCUMENT_POSITION_IMPLEMENTATION_SPECIFIC
readonly attribute DOMStringnodeName
attribute DOMStringnodeValue
attribute DOMStringtextContent
readonly attribute unsigned shortnodeType
type of the node
readonly attribute NodeparentNode
parent of the node
readonly attribute ElementparentElement
parent element of the node. If parent is not an Element, returns null.
readonly attribute NodeListchildNodes
list of the children of this node
readonly attribute NodefirstChild
the node’s first child in the tree, or null if the node is childless
readonly attribute NodelastChild
last child of the node, or null if there are no child elements
readonly attribute NodepreviousSibling
the node immediately preceding the specified one in its parent’s children, or null if the specified node is the first in that list
readonly attribute NodenextSibling
the node immediately following the specified one in its parent’s children, or null if the specified node is the last node in that list
readonly attribute DocumentownerDocument
The Document object associated with this node. This is also the Document object used to create new nodes. When this node is a Document or a DocumentType which is not used with any Document yet, this is null.
readonly attribute USVStringbaseURI
readonly attribute booleanisConnected

Public Functions inherited from EventTarget

Name
voidaddEventListener(DOMInternedString type, EventListener listener, optional boolean useCapture)
voidremoveEventListener(DOMInternedString type, EventListener listener, optional boolean useCapture)
booleandispatchEvent(Event event)

Public Functions Documentation

function setAttribute

void setAttribute(
    DOMString qualifiedName,
    DOMString value
)

sets the given attribute name to the specified value

function setAttributeNS

void setAttributeNS(
    DOMString ns,
    DOMString qualifiedName,
    DOMString value
)

sets the given attribute name to the specified value

function removeAttribute

void removeAttribute(
    DOMString qualifiedName
)

removes the specified attribute

function removeAttributeNS

void removeAttributeNS(
    DOMString ns,
    DOMString qualifiedName
)

removes the specified attribute

function getAttribute

DOMString getAttribute(
    DOMString qualifiedName
)

returns the attribute value for the given qualified name

function getAttributeNS

DOMString getAttributeNS(
    DOMString ns,
    DOMString qualifiedName
)

returns the attribute value for the given qualified name

function hasAttribute

boolean hasAttribute(
    DOMString qualifiedName
)

returns whether the element has an attribute with the given qualified name

function hasAttributeNS

boolean hasAttributeNS(
    DOMString ns,
    DOMString qualifiedName
)

returns whether the element has an attribute with the given qualified name

function getAttributeNode

Attr getAttributeNode(
    DOMString qualifiedName
)

Returns the specified attribute of the specified element, as an Attr node.

function getAttributeNodeNS

Attr getAttributeNodeNS(
    DOMString? namespace,
    DOMString localName
)

Returns the Attr node for the attribute with the given namespace and name.

function setAttributeNode

Attr setAttributeNode(
    Attr attr
)

Adds a new Attr node to the specified element.

function setAttributeNodeNS

Attr setAttributeNodeNS(
    Attr attr
)

Adds a new namespaced attribute node to an element.

function removeAttributeNode

Attr removeAttributeNode(
    Attr attr
)

Removes the specified attribute from the current element.

function hasAttributes

boolean hasAttributes()

Returns Boolean value, indicating if the current element has any attributes or not.

function getAttributeNames

sequenceDOMString getAttributeNames()

Must return the qualified names of the attributes in context objects attribute list, in order, and a new list otherwise.

function getElementsByTagName

HTMLCollection getElementsByTagName(
    DOMString qualifiedName
)

Returns the list of elements with qualified name qualifiedName for context object.

function getElementsByTagNameNS

HTMLCollection getElementsByTagNameNS(
    DOMString? namespace,
    DOMString localName
)

Return the list of elements with namespace namespace and local name localName for.

function getElementsByClassName

HTMLCollection getElementsByClassName(
    DOMString classNames
)

Return the list of elements with class names classNames for context object.

function insertAdjacentElement

Element insertAdjacentElement(
    DOMString where,
    Element element
)

Inserts a given element node at a given position relative to the element it is invoked upon.

function insertAdjacentText

void insertAdjacentText(
    DOMString where,
    DOMString data
)

Inserts a given text node at a given position relative to the element it is invoked upon.

function closest

Element closest(
    DOMString selectors
)

Returns the closest ancestor of the current element (or the current element itself) which matches the selectors given in parameter. If there isn’t such an ancestor, it returns null.

function matches

boolean matches(
    DOMString selectors
)

Returns true if the element would be selected by the specified selector string; otherwise, returns false.

function blur

void blur()

Removes keyboard focus from this element.

function focus

void focus()

Gives keyboard focus to this element.

function insertAdjacentHTML

void insertAdjacentHTML(
    DOMString position,
    DOMString text
)

Parses the specified text as HTML or XML and inserts the resulting nodes into the DOM tree at a specified position.

function querySelector

Element querySelector(
    DOMString selectors
)

Returns the first element that is a descendant of the element on which it is invoked that matches the specified group of selectors.

function querySelectorAll

NodeList querySelectorAll(
    DOMString selectors
)

Returns a static (not live) NodeList of all elements descended from the element on which it is invoked that matches the specified group of CSS selectors. (The base element itself is not included, even if it matches.)

function getAnimations

sequence< Animation > getAnimations(
    optional GetAnimationsOptions options
)

Returns an array of all the Animation objects that the element has.

Parameters:

  • options options for Animations retrieval

function getBoundingClientRect

DOMRect getBoundingClientRect()

Returns the bounding rectangle of the element.

function getClientRects

DOMRectList getClientRects()

Returns a collection of the bounding rectangles for each CSS border box in the element.

function remove

void remove()

Removes node Note: This should be part of the ChildNode interface.

Public Attributes Documentation

variable tagName

readonly attribute DOMString tagName;

the element tag

variable prefix

readonly attribute DOMString prefix;

Returns the namespace prefix of the specified element, or null if no prefix is specified.

variable namespaceURI

readonly attribute DOMString namespaceURI;

Returns the namespace URI of the element, or null if the element is not in a namespace.

variable localName

readonly attribute DOMString localName;

returns the local part of the qualified name of an element.

variable slot

attribute DOMString slot;

Returns the name of the shadow DOM slot attached to the element. A slot is a placeholder inside a web component that users can fill with their own markup.

variable id

attribute DOMString id;

the id of the element

variable clientTop

readonly attribute long clientTop;

Returns the unscaled width of the top border of the element in pixels, ignoring any transforms.

variable clientLeft

readonly attribute long clientLeft;

Returns the unscaled width of the left border of the element in pixels, ignoring any transforms.

variable clientWidth

readonly attribute long clientWidth;

Returns the unscaled width of the padding box of the element, ignoring any transforms.

variable clientHeight

readonly attribute long clientHeight;

Returns the unscaled height of the padding box of the element, ignoring any transforms.

variable attributes

readonly attribute NamedNodeMap attributes;

Gets a list of all attributes for the Element.

variable children

readonly attribute NodeList children;

A collection rooted at context object matching only element children. Note: This should be part of the ParentNode interface, which Element implements. Note: The return type should be HTMLCollection.

variable firstElementChild

readonly attribute Element firstElementChild;

attributes getter must return the first child that is an element, and null otherwise. Note: This should be part of the ParentNode interface, which Element

variable lastElementChild

readonly attribute Element lastElementChild;

attributes getter must return the last child that is an element, and null otherwise. Note: This should be part of the ParentNode interface, which Element

variable previousElementSibling

readonly attribute Element previousElementSibling;

Returns the Element immediately prior to this node in its parent’s children list, or null if there is no Element in the list prior to this node. Note: This attribute is part of the NonDocumentTypeChildNode interface, which Element implements.

variable nextElementSibling

readonly attribute Element nextElementSibling;

Returns the Element immediately following this node in its parent’s children list, or null if there is no Element in the list following this node. Note: This attribute is part of the NonDocumentTypeChildNode interface, which Element implements.

variable childElementCount

readonly attribute unsigned long childElementCount;

attributes getter must return the number of children of context object that are elements. Note: This should be part of the ParentNode interface, which Element

variable scrollLeft

attribute float scrollLeft;

position of the horizontal scrollbar of the element

variable scrollLeftVW

attribute float scrollLeftVW;

scrollLeft in VW units The setter converts a given value into PX units based on viewport size

variable scrollLeftVH

attribute float scrollLeftVH;

scrollLeft in VH units The setter converts a given value into PX units based on viewport size

variable scrollTop

attribute float scrollTop;

position of the vertical scrollbar of the element

variable scrollTopVW

attribute float scrollTopVW;

scrollTop in VW units The setter converts a given value into PX units based on viewport size

variable scrollTopVH

attribute float scrollTopVH;

scrollTop in VH units The setter converts a given value into PX units based on viewport size

variable scrollWidth

readonly attribute long scrollWidth;

size of the horizontal scrollbar of the element

variable scrollWidthVW

readonly attribute long scrollWidthVW;

scrollWidth converted to VW units

variable scrollWidthVH

readonly attribute long scrollWidthVH;

scrollWidth converted to VH units

variable scrollHeight

readonly attribute long scrollHeight;

size of the vertical scrollbar of the element

variable scrollHeightVW

readonly attribute long scrollHeightVW;

scrollHeight converted to VH units

variable scrollHeightVH

readonly attribute long scrollHeightVH;

scrollHeight converted to VH units

variable className

attribute DOMString className;

all of the classes of the element

variable classList

readonly attribute DOMTokenList classList;

variable innerHTML

attribute DOMString innerHTML;

Gets or sets the contents of the element as HTML.

variable outerHTML

attribute DOMString outerHTML;

Gets a fragment of HTML or XML that represents the element and its contents.

variable focusin

attribute EventSetter focusin;

variable focusout

attribute EventSetter focusout;

variable abort

attribute EventSetter abort;

variable blur

attribute EventSetter blur;

variable click

attribute EventSetter click;

variable auxclick

attribute EventSetter auxclick;

variable dblclick

attribute EventSetter dblclick;

variable error

attribute EventSetter error;

variable focus

attribute EventSetter focus;

variable keydown

attribute EventSetter keydown;

variable keypress

attribute EventSetter keypress;

variable keyup

attribute EventSetter keyup;

variable load

attribute EventSetter load;

variable mousedown

attribute EventSetter mousedown;

variable mouseover

attribute EventSetter mouseover;

variable mouseout

attribute EventSetter mouseout;

variable mouseenter

attribute EventSetter mouseenter;

variable mouseleave

attribute EventSetter mouseleave;

variable mousemove

attribute EventSetter mousemove;

variable mouseup

attribute EventSetter mouseup;

variable input

attribute EventSetter input;

variable change

attribute EventSetter change;

variable scroll

attribute EventSetter scroll;

variable wheel

attribute EventSetter wheel;

variable touchstart

attribute EventSetter touchstart;

variable touchend

attribute EventSetter touchend;

variable touchmove

attribute EventSetter touchmove;

variable animationstart

attribute EventSetter animationstart;

variable animationend

attribute EventSetter animationend;

variable animationcancel

attribute EventSetter animationcancel;

variable animationiteration

attribute EventSetter animationiteration;

variable transitionstart

attribute EventSetter transitionstart;

variable transitionend

attribute EventSetter transitionend;

variable transitioncancel

attribute EventSetter transitioncancel;

variable transitionrun

attribute EventSetter transitionrun;