Element.getAttributeNames()

在此页

句法
范例
Polyfill
规范
浏览器兼容性
相关话题

getAttributeNames() 方法在 元素 interface returns the attribute names of the element as an 数组 of strings. If the element has no attributes it returns an empty array.

使用 getAttributeNames() along with getAttribute() , is a memory-efficient and performant alternative to accessing Element.attributes .

句法

let attributeNames = element.getAttributeNames();

范例

// Iterate over element's attributes
for (let name of element.getAttributeNames()) {
  let value = element.getAttribute(name);
  console.log(name, value);
}

Polyfill

if (Element.prototype.getAttributeNames == undefined) {
  Element.prototype.getAttributeNames = function () {
    var attributes = this.attributes;
    var length = attributes.length;
    var result = new Array(length);
    for (var i = 0; i < length; i++) {
      result[i] = attributes[i].name;
    }
    return result;
  };
}

规范

规范	状态	注释
DOM The definition of 'Element.getAttributeNames' in that specification.	实时标准	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
`getAttributeNames`	Chrome 61	Edge 18	Firefox 45	IE 不支持 No	Opera 48	Safari 10	WebView Android 61	Chrome Android 61	Firefox Android 45	Opera Android 45	Safari iOS Yes	Samsung Internet Android 8.0

图例

完整支持
不支持

元数据

最后修改： 2019 年 3 月 23 日

在此页

句法

范例

Polyfill

规范

浏览器兼容性

图例

相关话题