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 |
|---|---|---|
| WHATWG 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. |
| Feature | Chrome | Edge | Firefox (Gecko) | Internet Explorer | Opera | Safari (WebKit) | Mozilla Servo |
|---|---|---|---|---|---|---|---|
| Basic support | (Yes) | (Yes) | (Yes) | (Yes) | (Yes) | (Yes) | implemented |
| Feature | Android | Edge | Firefox Mobile (Gecko) | IE Phone | Opera Mobile | Safari Mobile |
|---|---|---|---|---|---|---|
| Basic support | (Yes) | (Yes) | (Yes) | (Yes) | (Yes) | (Yes) |
History interface it belongs to.
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https://developer.mozilla.org/en-US/docs/Web/API/history/length