History.length
 The History.length read-only property returns an integer representing the number of elements in the session history, including the currently loaded page. 
 For example, for a page loaded in a new tab this property returns 1. 
Syntax
const length = history.length
Specifications
| Specification | 
|---|
| HTML Standard (HTML) # dom-history-length-dev  | 
Browser compatibility
| Desktop | Mobile | |||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Chrome | Edge | Firefox | Internet Explorer | Opera | Safari | WebView Android | Chrome Android | Firefox for Android | Opera Android | Safari on IOS | Samsung Internet | |
length | 
1  | 
12  | 
1  | 
10  | 
≤12.1  | 
1  | 
1  | 
18  | 
4  | 
≤12.1  | 
1  | 
1.0  | 
See also
- The 
Historyinterface it belongs to. 
    © 2005–2021 MDN contributors.
Licensed under the Creative Commons Attribution-ShareAlike License v2.5 or later.
    https://developer.mozilla.org/en-US/docs/Web/API/History/length