History.length

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。

 

Syntax

 

length = history.length;

Examples

var result = window.history.length; // 返回当前session中的history个数

Specifications

Specification	Status	Comment
HTML Living Standard History.length	Living Standard	No change from HTML5.
HTML5 History.length	Recommendation	Initial definition.

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.

• Desktop
• Mobile

Feature	Chrome	Edge	Firefox	Internet Explorer	Opera	Safari
Basic support	Yes	?	Yes	?	?	?

Feature	Android webview	Chrome for Android	Edge mobile	Firefox for Android	Opera Android	iOS Safari	Samsung Internet
Basic support	Yes	Yes	?	Yes	?	?	?

	Desktop						Mobile
	Chrome	Edge	Firefox	Internet Explorer	Opera	Safari	Android webview	Chrome for Android	Edge Mobile	Firefox for Android	Opera for Android	iOS Safari	Samsung Internet
Basic support	Chrome Full support Yes	Edge ?	Firefox Full support Yes	IE ?	Opera ?	Safari ?	WebView Android Full support Yes	Chrome Android Full support Yes	Edge Mobile ?	Firefox Android Full support Yes	Opera Android ?	Safari iOS ?	Samsung Internet Android ?

Legend

Full support  

Full support

Compatibility unknown  

Compatibility unknown

See also

• The History interface it belongs to.