Element.getAttributeNode()

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Returns the specified attribute of the specified element, as an Attr 节点。

句法

var attrNode = element.getAttributeNode(attrName);

attrNode 是 Attr node for the attribute.
attrName is a string containing the name of the attribute.

范例

// html: <div id="top" />
let t = document.getElementById("top");
let idAttr = t.getAttributeNode("id");
alert(idAttr.value == "top")

注意事项

When called on an HTML element in a DOM flagged as an HTML document, getAttributeNode lower-cases its argument before proceeding.

Attr node inherits from 节点 , but is not considered a part of the document tree. Common 节点 attributes like parentNode , previousSibling ，和 nextSibling are null 对于 Attr node. You can, however, get the element to which the attribute belongs with the ownerElement 特性。

getAttribute is usually used instead of getAttributeNode to get the value of an element's attribute.

DOM methods dealing with element's attributes:

Not namespace-aware, most commonly used methods	Namespace-aware variants (DOM Level 2)	DOM Level 1 methods for dealing with `Attr` nodes directly (seldom used)	DOM Level 2 namespace-aware methods for dealing with `Attr` nodes directly (seldom used)
`setAttribute` (DOM 1)	`setAttributeNS`	`setAttributeNode`	`setAttributeNodeNS`
`getAttribute` (DOM 1)	`getAttributeNS`	`getAttributeNode`	`getAttributeNodeNS`
`hasAttribute` (DOM 2)	`hasAttributeNS`	-	-
`removeAttribute` (DOM 1)	`removeAttributeNS`	`removeAttributeNode`	-

规范

规范	状态	注释
DOM The definition of 'getAttributeNode()' in that specification.	实时标准

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
`getAttributeNode`	Chrome Yes	Edge 12	Firefox Yes	IE ?	Opera Yes	Safari 6	WebView Android Yes	Chrome Android Yes	Firefox Android Yes	Opera Android Yes	Safari iOS Yes	Samsung Internet Android Yes

图例

完整支持
兼容性未知 ?

元数据

最后修改： Jan 2, 2020

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句法

范例

注意事项

规范

浏览器兼容性

图例

相关话题