contentWindow属性返回<iframe>元素的Window对象。你可以使用这个Window对象来访问iframe的文档及其内部DOM。contentWindow为只读，但是可以像操作全局Window对象一样操作其属性。
Example of contentWindow
var x = document.getElementsByTagName("iframe")[0].contentWindow;
//x = window.frames[0];
x.document.getElementsByTagName("body")[0].style.backgroundColor = "blue";
// this would turn the 1st iframe in document blue.
Specifications
| Specification | Status | Comment |
|---|---|---|
| HTML Living Standard HTMLIFrameElement: contentWindow |
Living Standard |
Browser compatibility
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.
Update compatibility data on GitHub
| Desktop | Mobile | ||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
contentWindow | Chrome Full support 43 | Edge Full support 12 | Firefox Full support Yes | IE Full support Yes | Opera Full support Yes | Safari Full support 6 | WebView Android Full support Yes | Chrome Android Full support Yes | Edge Mobile Full support Yes | Firefox Android Full support Yes | Opera Android Full support Yes | Safari iOS Full support Yes | Samsung Internet Android ? |
Legend
- Full support
- Full support
- Compatibility unknown
- Compatibility unknown