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.
length = history.length;
var result = window.history.length; // Returns the size of the history of the current session.
| Specification | Status | Comment |
|---|---|---|
| HTML Living Standard The definition of 'History.length' in that specification. | Living Standard | No change from HTML5. |
| HTML5 The definition of 'History.length' in that specification. | Recommendation | Initial definition. |
| Desktop | ||||||
|---|---|---|---|---|---|---|
| Chrome | Edge | Firefox | Internet Explorer | Opera | Safari | |
| Basic support | Yes | ? | Yes | ? | ? | ? |
| Mobile | |||||||
|---|---|---|---|---|---|---|---|
| Android webview | Chrome for Android | Edge Mobile | Firefox for Android | Opera for Android | iOS Safari | Samsung Internet | |
| Basic support | Yes | Yes | ? | Yes | ? | ? | ? |
History interface it belongs to.
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https://developer.mozilla.org/en-US/docs/Web/API/history/length