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/DOM

NamedNodeMap

The NamedNodeMap interface represents a collection of Attr objects. Objects inside a NamedNodeMap are not in any particular order, unlike NodeList, although they may be accessed by an index as in an array.

A NamedNodeMap object is live and will thus be auto-updated if changes are made to its contents internally or elsewhere.

Although called NamedNodeMap, this interface doesn't deal with Node objects but with Attr objects, which were originally a specialized class of Node, and still are in some implementations.

Properties

This interface doesn't inherit any property.

NamedNodeMap.length Read only: Returns the amount of objects in the map.

Methods

This interface doesn't inherit any method.

NamedNodeMap.getNamedItem(): Returns a Attr, corresponding to the given name.
NamedNodeMap.setNamedItem(): Replaces, or adds, the Attr identified in the map by the given name.
NamedNodeMap.removeNamedItem(): Removes the Attr identified by the given map.
NamedNodeMap.item(): Returns the Attr at the given index, or null if the index is higher or equal to the number of nodes.
NamedNodeMap.getNamedItemNS(): Returns a Attr identified by a namespace and related local name.
NamedNodeMap.setNamedItemNS(): Replaces, or adds, the Attr identified in the map by the given namespace and related local name.
NamedNodeMap.removeNamedItemNS(): Removes the Attr identified by the given namespace and related local name.

Specifications

Specification	Status	Comment
DOM The definition of 'NamedNodeMap' in that specification.	Living Standard	Deals with `Attr` instead of `Node`
Document Object Model (DOM) Level 3 Core Specification The definition of 'NamedNodeMap' in that specification.	Obsolete	No change from Document Object Model (DOM) Level 2 Core Specification
Document Object Model (DOM) Level 2 Core Specification The definition of 'NamedNodeMap' in that specification.	Obsolete	Added `getNamedItemNS()`, `setNamedItemNS()` and `removeNamedItemNS()`
Document Object Model (DOM) Level 1 Specification The definition of 'NamedNodeMap' in that specification.	Obsolete	Initial definition

Browser compatibilityUpdate compatibility data on GitHub

	Desktop
	Chrome	Edge	Firefox	Internet Explorer	Opera	Safari
Basic support	Yes	Yes	34 34 22 — 34 Uses the non-standard name: `mozNamedAttrMap` ? — 22	Yes	Yes	Yes
`getNamedItem`	?	?	34	?	?	?
`getNamedItemNS`	?	?	34	?	?	?
`item`	?	?	34	?	?	?
`length`	?	?	34	?	?	?
`removeNamedItem`	?	?	34	?	?	?
`removeNamedItemNS`	?	?	34	?	?	?
`setNamedItem`	?	?	34	?	?	?
`setNamedItemNS`	?	?	34	?	?	?

	Mobile
	Android webview	Chrome for Android	Edge Mobile	Firefox for Android	Opera for Android	iOS Safari	Samsung Internet
Basic support	Yes	Yes	Yes	34 34 22 — 34 Uses the non-standard name: `mozNamedAttrMap` ? — 22	Yes	Yes	?
`getNamedItem`	?	?	?	34	?	?	?
`getNamedItemNS`	?	?	?	34	?	?	?
`item`	?	?	?	34	?	?	?
`length`	?	?	?	34	?	?	?
`removeNamedItem`	?	?	?	34	?	?	?
`removeNamedItemNS`	?	?	?	34	?	?	?
`setNamedItem`	?	?	?	34	?	?	?
`setNamedItemNS`	?	?	?	34	?	?	?

NamedNodeMap

Properties

Methods

Specifications

Browser compatibilityUpdate compatibility data on GitHub

See also