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• 特性
• 方法
• 规范
• 浏览器兼容性
• 另请参阅
• 相关话题

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 节点 objects but with Attr objects, which were originally a specialized class of 节点 , and still are in some implementations.

特性

此接口未继承任何特性。

NamedNodeMap.length 只读

Returns the amount of objects in the map.

方法

This interface doesn't inherit any method.

NamedNodeMap.getNamedItem()

返回 Attr , corresponding to the given name.

NamedNodeMap.setNamedItem()

Replaces, or adds, the Attr identified in the map by the given name.

NamedNodeMap.removeNamedItem()

移除 Attr identified by the given map.

NamedNodeMap.item()

返回 Attr at the given index, or null if the index is higher or equal to the number of nodes.

NamedNodeMap.getNamedItemNS()

返回 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()

移除 Attr identified by the given namespace and related local name.

规范

规范	状态	注释
DOM The definition of 'NamedNodeMap' in that specification.	实时标准	Deals with Attr 而不是 节点
DOM (文档对象模型) 3 级核心规范 The definition of 'NamedNodeMap' in that specification.	过时	无变化自 DOM (文档对象模型) 级别 2 核心规范
DOM (文档对象模型) 级别 2 核心规范 The definition of 'NamedNodeMap' in that specification.	过时	添加 getNamedItemNS() , setNamedItemNS() and removeNamedItemNS()
DOM (文档对象模型) 1 级规范 The definition of 'NamedNodeMap' in that specification.	过时	初始定义

浏览器兼容性

The compatibility table on this page is generated from structured data. If you'd like to contribute to the data, please check out https://github.com/mdn/browser-compat-data and send us a pull request. 更新 GitHub 上的兼容性数据

	桌面						移动
	Chrome	Edge	Firefox	Internet Explorer	Opera	Safari	Android webview	Chrome for Android	Firefox for Android	Opera for Android	Safari on iOS	Samsung Internet
NamedNodeMap	Chrome Yes	Edge 12	Firefox 34 34 不支持 22 — 34 Alternate Name Alternate Name Uses the non-standard name: mozNamedAttrMap 不支持 ? — 22	IE Yes	Opera Yes	Safari Yes	WebView Android Yes	Chrome Android Yes	Firefox Android 34 34 不支持 22 — 34 Alternate Name Alternate Name Uses the non-standard name: mozNamedAttrMap 不支持 ? — 22	Opera Android Yes	Safari iOS Yes	Samsung Internet Android Yes
getNamedItem	Chrome Yes	Edge 12	Firefox 34	IE ?	Opera Yes	Safari Yes	WebView Android Yes	Chrome Android Yes	Firefox Android 34	Opera Android Yes	Safari iOS Yes	Samsung Internet Android Yes
getNamedItemNS	Chrome Yes	Edge 12	Firefox 34	IE ?	Opera Yes	Safari Yes	WebView Android Yes	Chrome Android Yes	Firefox Android 34	Opera Android Yes	Safari iOS Yes	Samsung Internet Android Yes
item	Chrome Yes	Edge 12	Firefox 34	IE ?	Opera Yes	Safari Yes	WebView Android Yes	Chrome Android Yes	Firefox Android 34	Opera Android Yes	Safari iOS Yes	Samsung Internet Android Yes
length	Chrome Yes	Edge 12	Firefox 34	IE ?	Opera Yes	Safari Yes	WebView Android Yes	Chrome Android Yes	Firefox Android 34	Opera Android Yes	Safari iOS Yes	Samsung Internet Android Yes
removeNamedItem	Chrome Yes	Edge 12	Firefox 34	IE ?	Opera Yes	Safari Yes	WebView Android Yes	Chrome Android Yes	Firefox Android 34	Opera Android Yes	Safari iOS Yes	Samsung Internet Android Yes
removeNamedItemNS	Chrome Yes	Edge 12	Firefox 34	IE ?	Opera Yes	Safari Yes	WebView Android Yes	Chrome Android Yes	Firefox Android 34	Opera Android Yes	Safari iOS Yes	Samsung Internet Android Yes
setNamedItem	Chrome Yes	Edge 12	Firefox 34	IE ?	Opera Yes	Safari Yes	WebView Android Yes	Chrome Android Yes	Firefox Android 34	Opera Android Yes	Safari iOS Yes	Samsung Internet Android Yes
setNamedItemNS	Chrome Yes	Edge 12	Firefox 34	IE ?	Opera Yes	Safari Yes	WebView Android Yes	Chrome Android Yes	Firefox Android 34	Opera Android Yes	Safari iOS Yes	Samsung Internet Android Yes

图例

完整支持

完整支持

兼容性未知 ?

兼容性未知

使用非标名称。

另请参阅

• Element.attributes

元数据

• 最后修改： 2019 年 3 月 23 日

相关话题

1. DOM (文档对象模型)
2. NamedNodeMap
3. 方法

   1. getNamedItem()
4. DOM 相关页面

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