Popups fail in JQueryMobile 1.3.2 after update chrome version 43.0.2357.65 m

Question

Has the latest chrome version "43.0.2357.65 m" broken JQueryMobile 1.3.2 for anyone else? When I click a popup now it goes to the top of the page and the scroll bar dissapears. It was fine in previous version.

The problem is affecting my applicaiton but is reproduceable on the JQueryMobile demo pages:

1. Using Chrome 43.0.2357.65 m go to http://demos.jquerymobile.com/1.3.2/
2. Click on popup
3. On the popup page click on "Sign in" button halfway down the page.
4. It will go to the top of the page and the scrollbar will have disappeared.

Note this doesn't happen every time - if you try it again it might work, but if you start the steps from a fresh tab it does appear to happen consistently.

I've raised an issue with Chrome but just wondering if anyone knows what's happening and if there's a workaround I can implement.

Thanks!

Answer 1

The popup seems to be odd it's hard to replicate - Going to the exact link below and then clicking on the said "sign in" button seems to guarantee the behaviour. http://demos.jquerymobile.com/1.3.2/widgets/popup/#&ui-state=dialog

I believe the solution below may be related it fixes other fun issues with the slide transition. (only limited test with popup) but looks promising

Overriding the offending function with code snippet below. You have to call this before you load jquerymobile js

// Override of $.fn.animationComplete muse be called before initialise jquery mobile js
   $(document).bind('mobileinit', function() {
     $.fn.animationComplete = function(callback) {
       if ($.support.cssTransitions) {
         var superfy= "WebKitTransitionEvent" in window ? "webkitAnimationEnd" : "animationend";
         return $(this).one(superfy, callback);
       } else {

         setTimeout(callback, 0);
         return $(this);
       }
     };

   })

Background: jqueryMobile 1.3.2 implements the jquery one() event handler attachment somewhat incorrectly.

.one() - "Attach a handler to an event for the elements. The handler is executed at most once per element per event type." : http://api.jquery.com/category/events/ : essentially event fires and then is removed.

However calling both ("webkitAnimationEnd and animationend") using one() would potentially mean that only 1 (depending on browser) of the two handlers is ever fired leaving the other too linger and potentially cause memory leaks.

Chrome43 handles both webkitAniationEnd and animationend - however only one at any given time. This leaves the other to linger and fire off the next time animation on the element occurs.