HTML form doesn't submit after successful AJAX validation - forms

Question

I have a simple HTML form that uses uses ajax in part of the validtion. the ajax works correctly and display errors correctly, but if all validation passes, the form doesn't submit. Basically, nothing happens. Nothing happens in Firebug, nothing happens on the page itself, etc. This is the Javascript that's called to validate the form:
var pass_form = $('#pass_form');
pass_form.submit( valid_pass_sett );
function valid_pass_sett() {
$('.caption_error').remove();
$('input').removeClass('error');
pass_old = $('input[name=pass_old]').val();
pass_new = $('input[name=pass_new]').val();
pass_confirm_new = $('input[name=pass_confirm_new]').val();
if (pass_old === "") {
//display error on form - snipped
return false;
} else if (pass_new === "") {
//display error on form - snipped
return false;
} else if (pass_new != pass_confirm_new) {
//display error on form - snipped
return false;
} else if (pass_new.length < 8) {
//display error on form - snipped
return false;
} else {
$.post("http://www.example.com/ajax/validate.php",{ // async validation
type: 'valid_old_change_pass',
pass_old: pass_old,
pass_new: pass_new
}, valid_pass_combo_callback);
}
return false; // cancel form submission
}
function valid_pass_combo_callback( data ) {
if (data == 'valid') {
//only if the form is valid!
pass_form[0].unbind('submit').submit();
//pass_form[0].submit();
} else if (data == "invalid_old") {
//display error on form - snipped
}
else if (data == "invalid_new") {
//display error on form - snipped
}
else {
//display error on form - snipped
}
}
and here's the basic HTML code for the form:
<form id="pass_form" class="standard" method="post" action="http://www.example.com/preferences" onsubmit="return valid_pass_sett()">
<fieldset>
<div>
<label for="pass_old">Old password:</label>
<input type="password" id="pass_old" name="pass_old" />
</div>
<div>
<label for="pass_new">New password:</label>
<input type="password" id="pass_new" name="pass_new" />
</div>
<div>
<label for="pass_confirm_new">Confirm new password:</label>
<input type="password" id="pass_confirm_new" name="pass_confirm_new" />
</div>
<div>
<label></label>
<input type="submit" id="pass_submit" name="pass_submit" value="Change password"/>
<input type="reset" id="pass_reset" name="pass_reset" value="Cancel"/>
</div>
</fieldset>
</form>
The script makes it all the way to the pass_form[0].unbind('submit').submit(); line, but then the form doesn't submit. Any help here?

Answer 1

Change the below line in your callback method valid_pass_combo_callback
//Replace this line
pass_form[0].unbind('submit').submit();
//By this
pass_form.unbind('submit').submit();

Answer 2

I decided to forgo binding this function to submit, and instead bound to an onclick event for a button on the form (which I'm using in place of a submit button) and that solved the problem. Validation is called when the button is clicked, and if client-side validation passes, then the form is submitted to the server for validation there.