Range.setStartBefore()
Range.setStartBefore()
方法相对另一个 Node
来设置一个Range
的开始位置. Range
的开始节点(focusNode)的父节点,和 referenceNode
的父节点是同一个.
Syntax
range.setStartBefore(referenceNode);
Parameters
Example
var range = document.createRange();
var referenceNode = document.getElementsByTagName("div").item(0);
range.setStartBefore(referenceNode);
Specifications
Specification | Status | Comment |
---|---|---|
DOM Range.setStartBefore() |
Living Standard | No change. |
Document Object Model (DOM) Level 2 Traversal and Range Specification Range.setStartBefore() |
Obsolete | Initial specification. |
Browser compatibility
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