Interface Attr

The Attr interface represents one of an element's attributes as an object.

MDN Reference

interface Attr {
    ATTRIBUTE_NODE: 2;
    baseURI: string;
    CDATA_SECTION_NODE: 4;
    childNodes: NodeListOf<ChildNode>;
    COMMENT_NODE: 8;
    DOCUMENT_FRAGMENT_NODE: 11;
    DOCUMENT_NODE: 9;
    DOCUMENT_POSITION_CONTAINED_BY: 16;
    DOCUMENT_POSITION_CONTAINS: 8;
    DOCUMENT_POSITION_DISCONNECTED: 1;
    DOCUMENT_POSITION_FOLLOWING: 4;
    DOCUMENT_POSITION_IMPLEMENTATION_SPECIFIC: 32;
    DOCUMENT_POSITION_PRECEDING: 2;
    DOCUMENT_TYPE_NODE: 10;
    ELEMENT_NODE: 1;
    ENTITY_NODE: 6;
    ENTITY_REFERENCE_NODE: 5;
    firstChild: ChildNode | null;
    isConnected: boolean;
    lastChild: ChildNode | null;
    localName: string;
    name: string;
    namespaceURI: string | null;
    nextSibling: ChildNode | null;
    nodeName: string;
    nodeType: number;
    nodeValue: string | null;
    NOTATION_NODE: 12;
    ownerDocument: Document;
    ownerElement: Element | null;
    parentElement: HTMLElement | null;
    parentNode: ParentNode | null;
    prefix: string | null;
    previousSibling: ChildNode | null;
    PROCESSING_INSTRUCTION_NODE: 7;
    specified: boolean;
    TEXT_NODE: 3;
    value: string;
    get textContent(): string;
    set textContent(value: string | null): void;
    addEventListener(
        type: string,
        callback: EventListenerOrEventListenerObject | null,
        options?: boolean | AddEventListenerOptions,
    ): void;
    appendChild<T extends Node>(node: T): T;
    cloneNode(subtree?: boolean): Node;
    compareDocumentPosition(other: Node): number;
    contains(other: Node | null): boolean;
    dispatchEvent(event: Event): boolean;
    getRootNode(options?: GetRootNodeOptions): Node;
    hasChildNodes(): boolean;
    insertBefore<T extends Node>(node: T, child: Node | null): T;
    isDefaultNamespace(namespace: string | null): boolean;
    isEqualNode(otherNode: Node | null): boolean;
    isSameNode(otherNode: Node | null): boolean;
    lookupNamespaceURI(prefix: string | null): string | null;
    lookupPrefix(namespace: string | null): string | null;
    normalize(): void;
    removeChild<T extends Node>(child: T): T;
    removeEventListener(
        type: string,
        callback: EventListenerOrEventListenerObject | null,
        options?: boolean | EventListenerOptions,
    ): void;
    replaceChild<T extends Node>(node: Node, child: T): T;
}
Hierarchy
Index

Properties

ATTRIBUTE_NODE baseURI CDATA_SECTION_NODE childNodes COMMENT_NODE DOCUMENT_FRAGMENT_NODE DOCUMENT_NODE DOCUMENT_POSITION_CONTAINED_BY DOCUMENT_POSITION_CONTAINS DOCUMENT_POSITION_DISCONNECTED DOCUMENT_POSITION_FOLLOWING DOCUMENT_POSITION_IMPLEMENTATION_SPECIFIC DOCUMENT_POSITION_PRECEDING DOCUMENT_TYPE_NODE ELEMENT_NODE ENTITY_NODE ENTITY_REFERENCE_NODE firstChild isConnected lastChild localName name namespaceURI nextSibling nodeName nodeType nodeValue NOTATION_NODE ownerDocument ownerElement parentElement parentNode prefix previousSibling PROCESSING_INSTRUCTION_NODE specified TEXT_NODE value

Accessors

textContent

Methods

addEventListener appendChild cloneNode compareDocumentPosition contains dispatchEvent getRootNode hasChildNodes insertBefore isDefaultNamespace isEqualNode isSameNode lookupNamespaceURI lookupPrefix normalize removeChild removeEventListener replaceChild

Properties

ATTRIBUTE_NODE: 2
baseURI: string

The read-only baseURI property of the Node interface returns the absolute base URL of the document containing the node.

MDN Reference

CDATA_SECTION_NODE: 4

node is a CDATASection node.

childNodes: NodeListOf<ChildNode>

The read-only childNodes property of the Node interface returns a live the first child node is assigned index 0.

MDN Reference

COMMENT_NODE: 8

node is a Comment node.

DOCUMENT_FRAGMENT_NODE: 11

node is a DocumentFragment node.

DOCUMENT_NODE: 9

node is a document.

DOCUMENT_POSITION_CONTAINED_BY: 16

Set when other is a descendant of node.

DOCUMENT_POSITION_CONTAINS: 8

Set when other is an ancestor of node.

DOCUMENT_POSITION_DISCONNECTED: 1

Set when node and other are not in the same tree.

DOCUMENT_POSITION_FOLLOWING: 4

Set when other is following node.

DOCUMENT_POSITION_IMPLEMENTATION_SPECIFIC: 32
DOCUMENT_POSITION_PRECEDING: 2

Set when other is preceding node.

DOCUMENT_TYPE_NODE: 10

node is a doctype.

ELEMENT_NODE: 1

node is an element.

ENTITY_NODE: 6
ENTITY_REFERENCE_NODE: 5
firstChild: ChildNode | null

The read-only firstChild property of the Node interface returns the node's first child in the tree, or null if the node has no children.

MDN Reference

isConnected: boolean

The read-only isConnected property of the Node interface returns a boolean indicating whether the node is connected (directly or indirectly) to a Document object.

MDN Reference

lastChild: ChildNode | null

The read-only lastChild property of the Node interface returns the last child of the node, or null if there are no child nodes.

MDN Reference

localName: string

The read-only localName property of the Attr interface returns the local part of the qualified name of an attribute, that is the name of the attribute, stripped from any namespace in front of it.

MDN Reference

name: string

The read-only name property of the Attr interface returns the qualified name of an attribute, that is the name of the attribute, with the namespace prefix, if any, in front of it.

MDN Reference

namespaceURI: string | null

The read-only namespaceURI property of the Attr interface returns the namespace URI of the attribute, or null if the element is not in a namespace.

MDN Reference

nextSibling: ChildNode | null

The read-only nextSibling property of the Node interface returns the node immediately following the specified one in their parent's Node.childNodes, or returns null if the specified node is the last child in the parent element.

MDN Reference

nodeName: string

The read-only nodeName property of Node returns the name of the current node as a string.

MDN Reference

nodeType: number

The read-only nodeType property of a Node interface is an integer that identifies what the node is.

MDN Reference

nodeValue: string | null

The nodeValue property of the Node interface returns or sets the value of the current node.

MDN Reference

NOTATION_NODE: 12
ownerDocument: Document

The read-only ownerDocument property of the Node interface returns the top-level document object of the node.

MDN Reference

ownerElement: Element | null

The read-only ownerElement property of the Attr interface returns the Element the attribute belongs to.

MDN Reference

parentElement: HTMLElement | null

The read-only parentElement property of Node interface returns the DOM node's parent Element, or null if the node either has no parent, or its parent isn't a DOM Element.

MDN Reference

parentNode: ParentNode | null

The read-only parentNode property of the Node interface returns the parent of the specified node in the DOM tree.

MDN Reference

prefix: string | null

The read-only prefix property of the Attr returns the namespace prefix of the attribute, or null if no prefix is specified.

MDN Reference

previousSibling: ChildNode | null

The read-only previousSibling property of the Node interface returns the node immediately preceding the specified one in its parent's or null if the specified node is the first in that list.

MDN Reference

PROCESSING_INSTRUCTION_NODE: 7

node is a ProcessingInstruction node.

specified: boolean

The read-only specified property of the Attr interface always returns true.

MDN Reference

ReadonlyTEXT_NODE

TEXT_NODE: 3

node is a Text node.

value: string

The value property of the Attr interface contains the value of the attribute.

MDN Reference

Accessors

  • get textContent(): string

    MDN Reference

    Returns string

  • set textContent(value: string | null): void

    The textContent property of the Node interface represents the text content of the node and its descendants.

    MDN Reference

    Parameters

    • value: string | null

    Returns void

Methods

  • The appendChild() method of the Node interface adds a node to the end of the list of children of a specified parent node.

    MDN Reference

    Type Parameters

    Parameters

    • node: T

    Returns T

  • The cloneNode() method of the Node interface returns a duplicate of the node on which this method was called.

    MDN Reference

    Parameters

    • Optionalsubtree: boolean

    Returns Node

  • The compareDocumentPosition() method of the Node interface reports the position of its argument node relative to the node on which it is called.

    MDN Reference

    Parameters

    Returns number

  • The contains() method of the Node interface returns a boolean value indicating whether a node is a descendant of a given node, that is the node itself, one of its direct children (Node.childNodes), one of the children's direct children, and so on.

    MDN Reference

    Parameters

    Returns boolean

  • The dispatchEvent() method of the EventTarget sends an Event to the object, (synchronously) invoking the affected event listeners in the appropriate order.

    MDN Reference

    Parameters

    • event: Event

    Returns boolean

  • The hasChildNodes() method of the Node interface returns a boolean value indicating whether the given Node has child nodes or not.

    MDN Reference

    Returns boolean

  • The insertBefore() method of the Node interface inserts a node before a reference node as a child of a specified parent node.

    MDN Reference

    Type Parameters

    Parameters

    • node: T
    • child: Node | null

    Returns T

  • The isDefaultNamespace() method of the Node interface accepts a namespace URI as an argument.

    MDN Reference

    Parameters

    • namespace: string | null

    Returns boolean

  • The isEqualNode() method of the Node interface tests whether two nodes are equal.

    MDN Reference

    Parameters

    • otherNode: Node | null

    Returns boolean

  • The isSameNode() method of the Node interface is a legacy alias the for the === strict equality operator.

    MDN Reference

    Parameters

    • otherNode: Node | null

    Returns boolean

  • The lookupNamespaceURI() method of the Node interface takes a prefix as parameter and returns the namespace URI associated with it on the given node if found (and null if not).

    MDN Reference

    Parameters

    • prefix: string | null

    Returns string | null

  • The lookupPrefix() method of the Node interface returns a string containing the prefix for a given namespace URI, if present, and null if not.

    MDN Reference

    Parameters

    • namespace: string | null

    Returns string | null

  • The normalize() method of the Node interface puts the specified node and all of its sub-tree into a normalized form.

    MDN Reference

    Returns void

  • The removeChild() method of the Node interface removes a child node from the DOM and returns the removed node.

    MDN Reference

    Type Parameters

    Parameters

    • child: T

    Returns T

  • The removeEventListener() method of the EventTarget interface removes an event listener previously registered with EventTarget.addEventListener() from the target.

    MDN Reference

    Parameters

    Returns void

  • The replaceChild() method of the Node interface replaces a child node within the given (parent) node.

    MDN Reference

    Type Parameters

    Parameters

    Returns T

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