[jQuery] Re: HowTo: Trigger error callback in ajax request

[Andy Matthews]

Have you tried 'throw' yet?

http://www.w3schools.com/js/js_throw.asp 


andy


-----Original Message-----
From: jquery-en@googlegroups.com [mailto:jquery...@googlegroups.com] On
Behalf Of Rob Wilkerson
Sent: Wednesday, December 17, 2008 8:26 AM
To: jQuery (English)
Subject: [jQuery] HowTo: Trigger error callback in ajax request


I have an ajax request being sent to a PHP script. If that script captures
an error, I'd like it to echo that error and return whatever it needs to
return to trigger the error callback in my ajax call. I can't seem to find
what that is.  Is it a non-200 status code?  Simply throwing an error (throw
new Exception()) just triggers the success callback with the error text (not
unexpectedly, of course).

I'm using the jQuery form plugin and using the .ajaxSubmit() method, but I
suspect the answer would be the same for a core .ajax() call.
My simplified case looks like this:

$(document).ready ( function() {
        $( '#CommercialVendorAddForm' ).submit (
                function() {
                        $(this).block();

                        $(this).ajaxSubmit ({
                                beforeSubmit: function() {
                                        alert ( 'validating' );
                                },
                                success: function ( responseText,
responseCode ) {
                                        alert ( 'success' );
                                        alert ( responseText );
                                },
                                error: function() {
                                        alert ( 'An error has occured. Your
application could not be submitted.' );
                                },
                                complete: function() {
                                        $( '#CommercialVendorAddForm'
).unblock();
                                }
                        });

                        return false;
                }
        );
});

I can't believe that there's not a way to force the error callback to
receive the response if the server page returns an error, but what is that
way?

Thanks.

Rob