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。

Selection.extend() method moves the focus of the selection to a specified point. The anchor of the selection does not move. The selection will be from the anchor to the new focus, regardless of direction.

句法

sel.extend(node, offset)
					

参数

node

The node within which the focus will be moved.

offset 可选
The offset position within node where the focus will be moved to. If not specified, the default value 0 被使用。

规范

规范 状态 注释
选定 API
The definition of 'Selection.extend()' in that specification.
工作草案 Current

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
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Chrome Edge Firefox Internet Explorer Opera Safari Android webview Chrome for Android Firefox for Android Opera for Android Safari on iOS Samsung Internet
extend Chrome Yes Edge 12 Firefox Yes IE No Opera Yes Safari Yes WebView Android No Chrome Android Yes Firefox Android Yes Opera Android Yes Safari iOS Yes Samsung Internet Android Yes
offset parameter is optional Chrome Yes Edge ≤79 Firefox 55 IE No Opera Yes Safari Yes WebView Android No Chrome Android Yes Firefox Android 55 Opera Android Yes 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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