jQuery Mobile - handling JS errors on new page

Question

I encountered a never ending "Loading" dialog when moving from one page to the next, because the next page had a JS error in it.

Is there a way to avoid the loading message and instead show an error message?

Edit: To clarify, I am looking for a solution that displays an error message to the user (like "We encountered a problem. Please contact the system administrator"). It would also be great to return to the previous page, so a user can continue to use the app. As it is right now, a JS error stops them cold in their tracks.

You could just look at your browser's console output to see what the problem is. — Ryan
– Ryan, Commented Feb 15, 2012 at 21:51
possible duplicate of JQuery Mobile "Error Loading Page" message — Ryan
– Ryan, Commented Feb 15, 2012 at 21:57
I should clarify, I am looking for a solution that displays an error message to the user (like "We encountered a problem. Please contact the system administrator"). It would also be great to return to the previous page, so they can continue to use the app. I can certainly use firebug/debugger to find the issue, but I am thinking more about the end user's experience. — Steve
– Steve, Commented Feb 15, 2012 at 22:06

Ryan · Accepted Answer · 2012-02-15 22:31:38Z

1

It is possible to detect and react to page loads that failed using something like:

     $('#pagename').live('pageloadfailed', function () {
     alert('page load failed.');
     });

But a true Javascript error is handled at the browser level, and will stop execution when encountered.

Your best best would be to encapsulate the potential javscript problem in a try ... catch block and add some logic around it.

edited Feb 15, 2012 at 22:31

answered Feb 15, 2012 at 22:20

Ryan

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