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 compatibility

Update compatibility data on GitHub
DesktopMobile
ChromeEdgeFirefoxInternet ExplorerOperaSafariAndroid webviewChrome for AndroidEdge MobileFirefox for AndroidOpera for AndroidiOS SafariSamsung Internet
Basic supportChrome Full support YesEdge Full support YesFirefox Full support 34
Full support 34
No support 22 — 34
Alternate Name
Alternate Name Uses the non-standard name: mozNamedAttrMap
No support ? — 22
IE Full support YesOpera Full support YesSafari Full support YesWebView Android Full support YesChrome Android Full support YesEdge Mobile Full support YesFirefox Android Full support 34
Full support 34
No support 22 — 34
Alternate Name
Alternate Name Uses the non-standard name: mozNamedAttrMap
No support ? — 22
Opera Android Full support YesSafari iOS Full support YesSamsung Internet Android ?
getNamedItemChrome ? Edge ? Firefox Full support 34IE ? Opera ? Safari ? WebView Android ? Chrome Android ? Edge Mobile ? Firefox Android Full support 34Opera Android ? Safari iOS ? Samsung Internet Android ?
getNamedItemNSChrome ? Edge ? Firefox Full support 34IE ? Opera ? Safari ? WebView Android ? Chrome Android ? Edge Mobile ? Firefox Android Full support 34Opera Android ? Safari iOS ? Samsung Internet Android ?
itemChrome ? Edge ? Firefox Full support 34IE ? Opera ? Safari ? WebView Android ? Chrome Android ? Edge Mobile ? Firefox Android Full support 34Opera Android ? Safari iOS ? Samsung Internet Android ?
lengthChrome ? Edge ? Firefox Full support 34IE ? Opera ? Safari ? WebView Android ? Chrome Android ? Edge Mobile ? Firefox Android Full support 34Opera Android ? Safari iOS ? Samsung Internet Android ?
removeNamedItemChrome ? Edge ? Firefox Full support 34IE ? Opera ? Safari ? WebView Android ? Chrome Android ? Edge Mobile ? Firefox Android Full support 34Opera Android ? Safari iOS ? Samsung Internet Android ?
removeNamedItemNSChrome ? Edge ? Firefox Full support 34IE ? Opera ? Safari ? WebView Android ? Chrome Android ? Edge Mobile ? Firefox Android Full support 34Opera Android ? Safari iOS ? Samsung Internet Android ?
setNamedItemChrome ? Edge ? Firefox Full support 34IE ? Opera ? Safari ? WebView Android ? Chrome Android ? Edge Mobile ? Firefox Android Full support 34Opera Android ? Safari iOS ? Samsung Internet Android ?
setNamedItemNSChrome ? Edge ? Firefox Full support 34IE ? Opera ? Safari ? WebView Android ? Chrome Android ? Edge Mobile ? Firefox Android Full support 34Opera Android ? Safari iOS ? Samsung Internet Android ?

Legend

Full support  
Full support
Compatibility unknown  
Compatibility unknown
Uses a non-standard name.
Uses a non-standard name.

See also

Document Tags and Contributors

Last updated by: fscholz,