Question

The documentation indicates that the error: option function will make available: XHR instance, a status message string (in this case always error) and an optional exception object returned from the XHR instance (Book: JQuery in Action)

Using the following (in the $.ajax call) I was able to determine I had a ‘parsererror’ and a ‘timeout’ (since I added the timeout: option) error

error: function(request, error){} 

What are other things you evaluate in the error option? do you include the optional exception object?

EDIT: one of the answers indicates all the return errors…learning more about what is of value (for debugging) in the XHR instance and exception object would be helpful

This is a complete $.ajax call:

$.ajax({  type: 'post',  url: 'http://myServer/cgi-bin/broker' ,  dataType: 'text',  data: {  '_service' : 'myService',  '_program' : 'myProgram',  'start' : start,  'end' : end  },  beforeSend: function() {   $('#loading').removeClass('hide');  },  timeout: 5000,  error: function(request,error) {   $('#loading').addClass('hide');   if (error == 'timeout') {    $('#error').append('The request timed out, please resubmit');   }   else {    $('#error').append('ERROR: ' + error);   }   },   success: function(request) {    $('#loading').addClass('hide');    var t = eval( '(' + request + ')' ) ;   } // End success }); // End ajax method 

Thanks for the input

Answer 1

Looking at the jQuery source code, there are four returned statuses, in additon to success:

• timeout – when your specified timeout is exceeded
• error – http error, like 404
• notmodified – when requested resource was not modified since last request
• parsererror – when an xml/json response is bad