intercept form submit with jQuery
<p>I wanna intercept a submit via jQuery and first check if a file is present on the server. If it's present continue with the request, if not display a message and dont send the request. This is what I have:</p>

<pre><code>$("#methodForm").submit(function(e){

              checkIndex('upload/segments.gen').done(function() {
                  return true;
                }).fail(function () {
                  e.preventDefault();
                  alert("No index present!");
                  return false;
              });
});
</code></pre>

<p>this is the checkIndex()</p>

<pre><code>function checkIndex(file){
    return $.ajax({
        url : file,
        type:'HEAD'
    });
}
</code></pre>

<p>What happens is this: The file is present on the server, but the checkIndex returns with fail. First I see the alert popup and then it continues and sends the post request to the server.</p>

<p>I use the checkIndex() for other purposes as well where it works like expected so I'm pretty sure the error is somewhere in the submit routine. But I can't find out what's wrong with it.</p>
