Javascript: Need to detect when a user revisits the page with a changed hash tag

Question

Problem is (at least with my current browser), changing the hash tag and entering the new url doesn't trigger a refresh of the page, and thus I'm not aware offhand how to detect when this hash tag change has been made.

Is there an elegant way to do this?

score 1 · Answer 1 · answered May 15 '11 at 05:23

1

Check for a new location.hash

answered May 15 '11 at 05:23

mVChr

49,587
11
107
104

Every 100 milliseconds or something? – Hamster May 15 '11 at 05:24
Lol, that's *exactly* what I set my interval to! – Blender May 15 '11 at 05:25

score 0 · Accepted Answer · answered May 15 '11 at 05:25

0

This is a nasty-ish solution, but you can poll the URL for a change every so often:

var hash = window.location.hash;

function poll() {
  if (window.location.hash != hash) {
    hash = window.location.hash;

    // Hash has changed. Do stuff here.
  }
}

setInterval(poll, 100);

answered May 15 '11 at 05:25

Blender

289,723
53
439
496

Sadly, afaict. There might be an event, but I doubt it's supported by IE. – Blender May 15 '11 at 05:30
See this question: http://stackoverflow.com/questions/680785/on-window-location-hash-change – Blender May 15 '11 at 05:31

Javascript: Need to detect when a user revisits the page with a changed hash tag

2 Answers2