Range.compareNode()

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句法
范例
注意事项
规范
浏览器兼容性
另请参阅
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非标
此特征是非标准的，且不在标准轨道中。不要在面向 Web 的生产站点中使用它：它不适用于每个用户。实现之间可能存在大的不兼容性，且行为将来可能改变。

Obsolete since Gecko 1.9 (Firefox 3)
This feature is obsolete. Although it may still work in some browsers, its use is discouraged since it could be removed at any time. Try to avoid using it.

Range.compareNode() returns a constant indicating the position of the 节点 .

可能的值包括：

NODE_BEFORE ( 0 )
NODE_AFTER ( 1 )
NODE_BEFORE_AND_AFTER ( 2 )
NODE_INSIDE ( 3 )

警告： This method has been removed from Gecko 1.9 and will not exist in future versions of Firefox, which was the only browser implementing it; you should switch to Range.compareBoundaryPoints() as soon as possible.

The following function can be used as replacement:

function rangeCompareNode(range, node) {
  var nodeRange = node.ownerDocument.createRange();
  try {
    nodeRange.selectNode(node);
  }
  catch (e) {
    nodeRange.selectNodeContents(node);
  }
  var nodeIsBefore = range.compareBoundaryPoints(Range.START_TO_START, nodeRange) == 1;
  var nodeIsAfter = range.compareBoundaryPoints(Range.END_TO_END, nodeRange) == -1;
  if (nodeIsBefore && !nodeIsAfter)
    return 0;
  if (!nodeIsBefore && nodeIsAfter)
    return 1;
  if (nodeIsBefore && nodeIsAfter)
    return 2;
  return 3;
}

句法

returnValue = range.compareNode( referenceNode );

参数

referenceNode: 节点 to compare with the 范围 .

范例

range = document.createRange();
range.selectNode(document.getElementsByTagName("div").item(0));
returnValue = range.compareNode(document.getElementsByTagName("p").item(0));

注意事项

This method is obsolete; you should use the W3C DOM Range.compareBoundaryPoints() 方法。

规范

This method is not standard and therefore not part of any specification.

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
`compareNode` 弃用非标	Chrome No	Edge No	Firefox No	IE No	Opera No	Safari No	WebView Android No	Chrome Android No	Firefox Android No	Opera Android No	Safari iOS No	Samsung Internet Android No

图例

不支持
实验。期望将来行为有所改变。
非标。预期跨浏览器支持较差。
弃用。不要用于新网站。

另请参阅

The DOM interfaces index

元数据

最后修改： 2019 年 3 月 23 日

在此页

句法

参数

范例

注意事项

规范

浏览器兼容性

图例

另请参阅

相关话题