这是 实验性技术
检查 浏览器兼容性表格 要小心谨慎在生产中使用这之前。

Range.comparePoint() 方法返回 -1 , 0 ,或 1 depending on whether the referenceNode is before, the same as, or after the 范围 .

reference node 节点 类型 文本 , 注释 ,或 CDATASection , then offset is the number of characters from the start of reference node . For other 节点 types, offset is the number of child nodes between the start of the reference node .

句法

returnValue = range.comparePoint(referenceNode, offset)
					

参数

referenceNode
节点 to compare with the 范围 .
offset
An integer greater than or equal to zero representing the offset inside the referenceNode .

范例

range = document.createRange();
range.selectNode(document.getElementsByTagName('div').item(0));
returnValue = range.comparePoint(document.getElementsByTagName('p').item(0), 1);
					

规范

规范 状态 注释
DOM
The definition of 'Range.comparePoint()' in that specification.
实时标准 最初的规范。

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
comparePoint Chrome Yes Edge 17 Firefox Yes IE No Opera 15 Safari Yes WebView Android Yes Chrome Android Yes Firefox Android Yes Opera Android 14 Safari iOS Yes Samsung Internet Android Yes

图例

完整支持

完整支持

不支持

不支持

实验。期望将来行为有所改变。

实验。期望将来行为有所改变。

另请参阅

元数据

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