Jquery checking success of ajax post

Question

how do i define the success and failure function of an ajax $.post?

Answer 1

The documentation is here: http://docs.jquery.com/Ajax/jQuery.ajax

But, to summarize, the ajax call takes a bunch of options. the ones you are looking for are error and success.

You would call it like this:

$.ajax({   url: 'mypage.html',   success: function(){     alert('success');   },   error: function(){     alert('failure');   } }); 

I have shown the success and error function taking no arguments, but they can receive arguments.

The error function can take three arguments: XMLHttpRequest, textStatus, and errorThrown.

The success function can take two arguments: data and textStatus. The page you requested will be in the data argument.

Answer 2

If you need a failure function, you can't use the $.get or $.post functions; you will need to call the $.ajax function directly. You pass an options object that can have "success" and "error" callbacks.

Instead of this:

$.post("/post/url.php", parameters, successFunction); 

you would use this:

$.ajax({     url: "/post/url.php",     type: "POST",     data: parameters,     success: successFunction,     error: errorFunction }); 

There are lots of other options available too. The documentation lists all the options available.