The maximum value of 'window.history.length'

Question

The value of window.history.length is very important in our project to detect the back button is clicked in the browser. However, I realized that window.history.length does not pass 50. How can I solve this?

This may well be a browser-specific limit anyway, and I'd think it'd keep the latest values and just remove the oldest at the head of the list. Are you monitoring the count specifically or the contents? — Rup, May 03 '13 at 09:27
@Qantas94Heavy length is used to detect back button is clicked or not — kml_ckr, May 03 '13 at 10:57
@kml_ckr, This will not work. It could say 10 if you have "foward" entries, [even while the backward entries are 0](http://stackoverflow.com/a/9757655/632951). — Pacerier, Apr 06 '15 at 07:31

score 5 · Answer 1 · edited Mar 15 '23 at 15:51

5

Depending on whether you need it to be persistent across sessions and surviving a clean of the user information (cache, localStorage, etc.), you might want to adopt different solutions.

One of the solutions could be to do something like this:

window.onpopstate = function(event) {
  var count = parseInt(localStorage.getItem('history-changes-count'), 10);
  localStorage.setItem('history-changes-count', ++count);
};

Note that onpopstate gets invoked only after a user action. It doesn't work if you modify the history programmatically.

More on the subject: Window: popstate event

edited Mar 15 '23 at 15:51

Peter Mortensen

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answered May 03 '13 at 12:14

Alberto Zaccagni

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Thanks. It looks clean solution – kml_ckr May 06 '13 at 08:13
1

this seems like a clean and simple solution. – ricosrealm Jun 14 '13 at 05:13
Caveat: localStorage is shared between tabs, so opening the same page in multiple tabs will mess up this solution. – andraaspar Sep 03 '19 at 14:19
Instead of localStorage, keep the count in the history state using `replaceState({count}, title, href)`. That will tie it to the browser history and keep it as long as the history is kept. – andraaspar Sep 04 '19 at 12:23
In addition to down voting my 6 years old answer consider adding an updated answer. – Alberto Zaccagni Sep 10 '19 at 15:12

score 1 · Accepted Answer · edited Mar 15 '23 at 15:42

1

It is possible to detect "Back Button Clicked" via iFrames. You can find the answer at Browser Back Button Detection.

edited Mar 15 '23 at 15:42

Peter Mortensen

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answered May 17 '13 at 07:27

Sedat Polat

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Yes I used that library. Thx for that. – kml_ckr May 17 '13 at 07:41

The maximum value of 'window.history.length'

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