Range:collapsed 属性
Baseline Widely available
This feature is well established and works across many devices and browser versions. It’s been available across browsers since March 2017.
Range.collapsed
只读属性返回一个表示 Range
的开始和结束节点是否重合的布尔标志。如果 Range
的开始和结束节点在 DOM 中是同一个位置,则该属性返回 true
;反之返回 false
。
折叠后的 Range
是空的(不含任何内容),并指向 DOM 树中的单个位置点。若要折叠一个范围,请参考 Range.collapse()
方法。
值
一个布尔值。
示例
js
let range = document.createRange();
range.setStart(startNode, startOffset);
range.setEnd(endNode, endOffset);
isCollapsed = range.collapsed;
规范
Specification |
---|
DOM # ref-for-dom-range-collapsed① |
浏览器兼容性
Report problems with this compatibility data on GitHubdesktop | mobile | |||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|
collapsed |
Legend
Tip: you can click/tap on a cell for more information.
- Full support
- Full support
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.