So I have a form that I'm trying to submit via AJAX:
This is how I set it up to test my php script that handles the login.

```
<form  class="login_form" method="post" action="login_ajax.php">
  Email: <input name="email" type="text" /> <br />
  Password: <input name="pass" type="password" /> <br />
  <input type="submit" />
</form>

```

This seems to work; correct credentials give a good return, json object with a "success" attribute, incorrect credentials gives a "failed" json object.

But then when I try to set up the script, nothing works.

```
$(document).ready(function() {
    $(".login_form").submit(function () {
       try {
        $.post("login_ajax.php", {'email':this.email.value, 'pass':this.pass.value},
          function (data) {
              alert("Back from AJAX");
          }, 'json');
       alert("Sent to AJAX");
       }
       catch(e) {
        alert(e);
       }
       return false;
   });
});

```

I'm not getting any exceptions, but nor am I getting the "BACK" alert. I just get the "Sent to AJAX" and then nothing. Is there something I misunderstand about the callback function passed to jQuery.post, that it would never be called?

EDIT: I replaced my .post line with the one below, and it worked correctly, the success function gets called and I've got the data that I want. I was under the impression that these were essentially equivalent.

```
$.ajax("login_ajax.php", 
     {'type':'POST', 
      'data':{'email':this.email.value, 'pass':this.pass.value},
      'error':function(thingy,status,em) {alert("ERROR: "+em);}, 
      'success':function(data, status) {alert(JSON.stringify(data));} 
      });

```