Handle 500 errors in JSON (jQuery)

Question

This JSON request:

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


        

Answer 1

Check out the jqXHR Object docs. You could use the fail method to capture any errors.

Something like the following for your case:

$.post(jSONurl+'?orderID='+thisOrderID+'&variationID='+thisVariationID+'&quantity='+thisQuantity+'&callback=?')
.done(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');
        }
      }, "json")
.fail(function(jqXHR, textStatus, errorThrown){
      alert("Got some error: " + errorThrown);
      });

I would also look into passing a json data string via post instead of attaching query variables:

$.post(jSONurl, $.toJSON({orderID: thisOrderID, variationID: thisVariationID, quantity: thisQuantity, callback: false}))