Range.startContainer是只读属性，返回Range开始的节点。要更改节点的起始位置，请使用Range.setStart（）方法。
Syntax
startRangeNode = range.startContainer;
Example
range = document.createRange();
range.setStart(startNode,startOffset);
range.setEnd(endNode,endOffset);
startRangeNode = range.startContainer;
Specifications
| Specification | Status | Comment |
|---|---|---|
| DOM Range.endContainer |
Living Standard | No change. |
| Document Object Model (DOM) Level 2 Traversal and Range Specification Range.startContainer |
Obsolete | Initial specification. |
Browser compatibility
We're converting our compatibility data into a machine-readable JSON format.
This compatibility table still uses the old format,
because we haven't yet converted the data it contains.
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| Feature | Chrome | Edge | Firefox (Gecko) | Internet Explorer | Opera | Safari |
|---|---|---|---|---|---|---|
| Basic support | (Yes) | (Yes) | 1.0 (1.7 or earlier) | 9.0 | 9.0 | (Yes) |
| Feature | Android | Edge | Firefox Mobile (Gecko) | IE Mobile | Opera Mobile | Safari Mobile |
|---|---|---|---|---|---|---|
| Basic support | (Yes) | (Yes) | 1.0 (1.0) | 9.0 | 9.0 | (Yes) |