Selection.collapse()

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句法
范例
规范
浏览器兼容性
另请参阅
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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.collapse() method collapses the current selection to a single point. The document is not modified. If the content is focused and editable, the caret will blink there.

句法

sel.collapse(node, offset);

参数

node: The caret location will be within this node. This value can also be set to null — if null is specified, the method will behave like Selection.removeAllRanges() , i.e. all ranges will be removed from the selection.

offset 可选: The offset in node to which the selection will be collapsed. If not specified, the default value 0 被使用。

范例

/* Place the caret at the beginning of an HTML document's body. */
var body = document.getElementsByTagName("body")[0];
window.getSelection().collapse(body,0);

规范

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

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
`collapse`	Chrome Yes	Edge 12	Firefox Yes	IE 9	Opera Yes	Safari Yes	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
实验。期望将来行为有所改变。

另请参阅

Selection , the interface it belongs to.

元数据

最后修改： 2020 年 1 月 22 日

DOM (文档对象模型)
Selection
特性
方法
1. addRange()
2. collapse()
3. collapseToEnd()
4. collapseToStart()
5. containsNode()
6. deleteFromDocument()
7. extend()
8. getRangeAt()
9. modify()
10. removeAllRanges()
11. removeRange()
12. selectAllChildren()
13. setBaseAndExtent()
14. toString()
DOM 相关页面

在此页

句法

参数

范例

规范

浏览器兼容性

图例

另请参阅

相关话题