TreeWalker.filter

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TreeWalker.filter 只读特性返回 NodeFilter that is the filtering object associated with the TreeWalker .

When creating the TreeWalker , the filter object is passed in as the third parameter, and its method NodeFilter.acceptNode() is called on every single node to determine whether or not to accept it.

句法

nodeFilter = treeWalker.filter;

范例

var treeWalker = document.createTreeWalker(
    document.body,
    NodeFilter.SHOW_ELEMENT,
    { acceptNode: function(node) { return NodeFilter.FILTER_ACCEPT; } },
    false
);
nodeFilter = treeWalker.filter; // document.body in this case

规范

规范	状态	注释
DOM The definition of 'TreeWalker.filter' in that specification.	实时标准	无变化自 Document Object Model (DOM) Level 2 Traversal and Range Specification
Document Object Model (DOM) Level 2 Traversal and Range Specification The definition of 'TreeWalker.filter' 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
`filter`	Chrome 1	Edge 12	Firefox 4	IE 9	Opera 9	Safari 3	WebView Android 3	Chrome Android Yes	Firefox Android 4	Opera Android 10.1	Safari iOS 3	Samsung Internet Android Yes

图例

完整支持

另请参阅

TreeWalker interface it belongs to.

元数据

最后修改： 2019 年 3 月 23 日

DOM (文档对象模型)
TreeWalker
特性
1. currentNode
2. ~~expandEntityReferences~~
3. filter
4. root
5. whatToShow
方法
DOM 相关页面

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句法

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图例

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