Element.attributes

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句法
范例
规范
浏览器兼容性
另请参阅
相关话题

Element.attributes property returns a live collection of all attribute nodes registered to the specified node. It is a NamedNodeMap , not an 数组 , so it has no 数组 methods and the Attr nodes' indexes may differ among browsers. To be more specific, 属性 is a key/value pair of strings that represents any information regarding that attribute.

句法

var attr = element.attributes;

范例

Basic examples

// Get the first <p> element in the document
var para = document.getElementsByTagName("p")[0];
var atts = para.attributes;

Enumerating elements attributes

Numerical indexing is useful for going through all of an element's attributes.
The following example runs through the attribute nodes for the element in the document with id "paragraph", and prints each attribute's value.

<!DOCTYPE html>
<html>
 <head>
  <title>Attributes example</title>
  <script type="text/javascript">
   function listAttributes() {
     var paragraph = document.getElementById("paragraph");
     var result = document.getElementById("result");
     // First, let's verify that the paragraph has some attributes
     if (paragraph.hasAttributes()) {
       var attrs = paragraph.attributes;
       var output = "";
       for(var i = attrs.length - 1; i >= 0; i--) {
         output += attrs[i].name + "->" + attrs[i].value;
       }
       result.value = output;
     } else {
       result.value = "No attributes to show";
     }
   }
  </script>
 </head>
<body>
 <p id="paragraph" style="color: green;">Sample Paragraph</p>
 <form action="">
  <p>
    <input type="button" value="Show first attribute name and value"
      onclick="listAttributes();">
    <input id="result" type="text" value="">
  </p>
 </form>
</body>
</html>

规范

规范	状态	注释
DOM The definition of 'Element.attributes' in that specification.	实时标准	从 DOM (文档对象模型) 3 级核心规范 , moved from `节点` to `元素`
DOM (文档对象模型) 3 级核心规范 The definition of 'Element.attributes' 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 'Element.attributes' in that specification.	过时	无变化自 DOM (文档对象模型) 1 级规范
DOM (文档对象模型) 1 级规范 The definition of 'Element.attributes' 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
`属性`	Chrome 26	Edge 12	Firefox 22	IE 5.5	Opera 8	Safari 6	WebView Android ≤37	Chrome Android 26	Firefox Android 22	Opera Android 10.1	Safari iOS 6	Samsung Internet Android 1.5

图例

完整支持

另请参阅

NamedNodeMap , the interface of the returned object
Cross-browser compatibility considerations: on quirksmode

元数据

最后修改： 2019 年 3 月 23 日

在此页

句法

范例

Basic examples

Enumerating elements attributes

规范

浏览器兼容性

图例

另请参阅

相关话题