Range:setStartBefore() 方法

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.setStartBefore() 方法将 Range 的起始位置设置在另一个 Node 之前。Range 起始位置的父 Node 将与 referenceNode 的父节点相同。

语法

js
setStartBefore(referenceNode)

参数

referenceNode

Range 应该在其之前开始的 Node

返回值

无(undefined)。

示例

js
const range = document.createRange();
const referenceNode = document.getElementsByTagName("div").item(0);

range.setStartBefore(referenceNode);

规范

Specification
DOM
# dom-range-setstartbefore

浏览器兼容性

Report problems with this compatibility data on GitHub
desktopmobile
Chrome
Edge
Firefox
Opera
Safari
Chrome Android
Firefox for Android
Opera Android
Safari on iOS
Samsung Internet
WebView Android
WebView on iOS
setStartBefore

Legend

Tip: you can click/tap on a cell for more information.

Full support
Full support

参见