preserving browser “back” button functionality usi

问题:

I'd like to preserve the back button functionality when loading pages via AJAX (jQuery load method) and pushing the URL to the browser bar via the history.pushState method. The problem occurs when one clicks on the browser back button and the 1st click only restores the previous URL but does not load the previous page.

Here's my code so far:

$(function(){
  var profile_url= "/profile";
   $('#click_button').click(function(){
      $('#main_content').load(profile_url);
      history.pushState({profile:profile_info}, "profile", profile_url);
   });
});

My question is is there any way to do an AJAX load of the previous page into the #main_content div on the 1st click of the back button?

Any help/advice would be greatly appreciated.

回答1:

I'd like to direct everyone to a jQuery plugin called PJAX which accomplishes what I was ultimately interested in asking this question. Pjax() combines jQuery AJAX and pushState for page loading and preserving browser history.

Here's the code, and here's a nice demo of pjax() in action.

It is really great and easy to use, in the demo, just remember to click the checkbox which is there to help demonstrate pjax()'s functionality.

回答2:

For this you need to subscribe to the 'popstate' event.

The popstate event is fired in certain cases when navigating to a session history entry. HTML5 spec

You could do this like this:

window.onpopstate = function() {
  $('#main_content').load(location.href)
};

回答3:

You can use the popstate event for this purpose. See https://developer.mozilla.org/en/DOM/window.onpopstate for details.

Also have a look at History.js which provides a wrapper and can fallback to url hashtags in case the browser does not support the history api.