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.
Note: 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.lengthRead 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
Attridentified in the map by the given name. NamedNodeMap.removeNamedItem()-
Removes the
Attridentified by the given map. NamedNodeMap.item()-
Returns the
Attrat the given index, ornullif the index is higher or equal to the number of nodes. NamedNodeMap.getNamedItemNS()-
Returns a
Attridentified by a namespace and related local name. NamedNodeMap.setNamedItemNS()-
Replaces, or adds, the
Attridentified in the map by the given namespace and related local name. NamedNodeMap.removeNamedItemNS()-
Removes the
Attridentified by the given namespace and related local name.
Specifications
| Specification |
|---|
| DOM Standard (DOM) # interface-namednodemap |
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 | |
NamedNodeMap |
1 |
12 |
34
22-34
1-22
|
5 |
≤12.1 |
1 |
1 |
18 |
34
22-34
4-22
|
≤12.1 |
1 |
1.0 |
getNamedItem |
1 |
12 |
1 |
6 |
≤12.1 |
1 |
1 |
18 |
4 |
≤12.1 |
1 |
1.0 |
getNamedItemNS |
1 |
12 |
1 |
9 |
≤12.1 |
1 |
1 |
18 |
4 |
≤12.1 |
1 |
1.0 |
item |
1 |
12 |
1 |
5 |
≤12.1 |
1 |
1 |
18 |
4 |
≤12.1 |
1 |
1.0 |
length |
1 |
12 |
1 |
5 |
≤12.1 |
1 |
1 |
18 |
4 |
≤12.1 |
1 |
1.0 |
removeNamedItem |
1 |
12 |
1 |
6 |
≤12.1 |
1 |
1 |
18 |
4 |
≤12.1 |
1 |
1.0 |
removeNamedItemNS |
1 |
12 |
1 |
9 |
≤12.1 |
1 |
1 |
18 |
4 |
≤12.1 |
1 |
1.0 |
setNamedItem |
1 |
12 |
1 |
6 |
≤12.1 |
1 |
1 |
18 |
4 |
≤12.1 |
1 |
1.0 |
setNamedItemNS |
1 |
12 |
1 |
9 |
≤12.1 |
1 |
1 |
18 |
4 |
≤12.1 |
1 |
1.0 |
See also
© 2005–2021 MDN contributors.
Licensed under the Creative Commons Attribution-ShareAlike License v2.5 or later.
https://developer.mozilla.org/en-US/docs/Web/API/NamedNodeMap