JQuery Parsed Ajax Errors

A very cool code fragment I ran into while looking for something else — funny how that happens.

jQuery Deferreds and the jQuery Promise Method

JQXHR AND THE PROMISE INTERFACE

1. $.ajaxPrefilter(function( options, originalOptions, jqXHR ) {
2.   if ( options.parseError ) {
3.     jqXHR.pipe( null, function( jqXHR, statusText, errorMsg ) {
4.         var parsed = $.parseJSON( jqXHR.responseText );
5.         return $.Deferred().rejectWith( this, [ jqXHR, statusText, parsed ] );
6.     }).promise( jqXHR );
7.     jqXHR.success = jqXHR.done;
8.     jqXHR.error = jqXHR.fail;
9.   }
10. });

http://lithostech.com/2011/04/jquery-deferreds-and-the-jquery-promise-method/

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