Handle 500 errors in JSON (jQuery)

Question

This JSON request:

$.ajax({
    url:jSONurl+\'?orderID=\'+thisOrderID+\'&variationID=\'+thisVariationID+\'&quantity=\'+thisQuantity+\'&callback=?         


        

Answer 1

I removed the dataType:json from the ajax call and I was able to catch the error. In these situations I do not need the content of the returned jSON luckily; only to know that there is an error being returned so this will suffice for now. Firebug still has a hissy fit but I am at least able to perform some actions when there is an error

$.ajax({
            url:'http://example.com/jsonservice/LiftieWeb/reserve?token=62e52d30e1aa70831c3f09780e8593f8&orderID='+thisOrderID+'&variationID='+reserveList+'&quantity='+thisQuantity+'&callback=?',
            type: 'POST',
            success: function(data) {
                if (data.response == 'Success'){
                    //show the tick. allow the booking to go through
                    $('#loadingSML'+thisVariationID).hide();
                    $('#tick'+thisVariationID).show();
                }else{
                    //show the cross. Do not allow the booking to be made
                    $('#loadingSML'+thisVariationID).hide();
                    $('#cross'+thisVariationID).hide();
                    $('#unableToReserveError').slideDown();
                    //disable the form
                    $('#OrderForm_OrderForm input').attr('disabled','disabled');
                }
            },
            error: function(data){
                alert('error');
            }
        })