Michael Grace

Are you using JSONP and jQuery and trying to handle non 200 responses? Getting frustrated that your error handler isn’t firing when it gets a 403, 404, or some other response code? Take a breath and repeat after me.

“There is no error handling in JSONP”

Now that you have fallen into a great despair, let me save you.

Head over to https://github.com/jaubourg/jquery-jsonp to find a good alternative to jQuery’s implementation of JSONP.

The solution was easy to implement and helped me solve the issues I was having with getting 403 and 404 errors on JSONP requests.

jQuery-JSONP is feature rich with

• error recovery in case of network failure or ill-formed JSON responses,
• precise control over callback naming and how it is transmitted in the URL,
• multiple requests with the same callback name running concurrently,
• two caching mechanisms (browser-based and page based),
• the possibility to manually abort the request just like any other AJAX request,
• a timeout mechanism.

and compatible with all major browsers

• Internet Explorer 6+
• Firefox 2+
• Chrome 1+
• Safari 3+
• Opera 9+

Photo by janet galore