javascript - window bind POPSTATE

Question

Given the following:

$(window).bind("popstate", function() {
    alert('popstate');
});

On first load, the alert fires with FireFox and Chrome but not Safari. Why is that? Anyone else seen this and know how to best solve for this?

Answer 1

See the code from pjax. pjax is fairly popular open source library now, so the below logic might be the best to avoid this issue.

var popped = ('state' in window.history), initialURL = location.href
$(window).bind('popstate', function(event) {
  // Ignore inital popstate that some browsers fire on page load
  var initialPop = !popped && location.href == initialURL
  popped = true
  if ( initialPop ) return
  ...

https://github.com/defunkt/jquery-pjax/blob/master/jquery.pjax.js