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Asked: 2026-05-10T20:32:52+00:00

Is it possible to catch an error when using JSONP with jQuery? I’ve tried

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Is it possible to catch an error when using JSONP with jQuery? I’ve tried both the $.getJSON and $.ajax methods but neither will catch the 404 error I’m testing. Here is what I’ve tried (keep in mind that these all work successfully, but I want to handle the case when it fails):

jQuery.ajax({     type: "GET",     url: handlerURL,     dataType: "jsonp",     success: function(results){         alert("Success!");     },     error: function(XMLHttpRequest, textStatus, errorThrown){         alert("Error");     } });

And also:

jQuery.getJSON(handlerURL + "&callback=?",      function(jsonResult){         alert("Success!");     });

I’ve also tried adding the $.ajaxError but that didn’t work either:

jQuery(document).ajaxError(function(event, request, settings){    alert("Error"); });
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1 Answer

  1. It seems that JSONP requests that don’t return a successful result never trigger any event, success or failure, and for better or worse that’s apparently by design.

    After searching their bug tracker, there’s a patch which may be a possible solution using a timeout callback. See bug report #3442. If you can’t capture the error, you can at least timeout after waiting a reasonable amount of time for success.

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