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History.length是一个只读属性，返回当前session中的history个数，包含当前页面在内。举个例子，对于新开一个tab加载的页面当前属性返回值1。
语法
length = history.length;
例子
var result = window.history.length; // 返回当前session中的history个数
说明
| 说明 | 状态 | 注释 |
|---|---|---|
| HTML Living Standard History.length |
Living Standard | No change from HTML5. |
| HTML5 History.length |
Recommendation | Initial definition. |
浏览器兼容性
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 | |||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
length | Chrome Full support Yes | Edge Full support 12 | Firefox Full support Yes | IE Full support 10 | Opera Full support Yes | Safari Full support Yes | WebView Android Full support Yes | Chrome Android Full support Yes | Firefox Android Full support Yes | Opera Android Full support Yes | Safari iOS Full support Yes | Samsung Internet Android Full support Yes |
Legend
- Full support
- Full support
参考
- The
Historyinterface it belongs to.