Why is validationEngine() not working?

Question

I am trying to make this contact form work with validation engine.

I am not able to understand why validation is not fired when pressing the Submit button. I have already spent over one hour doing debugging and so on.

You can notice that my form's input elements have class="validate[required]" and I also bound the form to validation engine:

<script type="text/javascript">
    $(document).ready(function(){
        // binds form submission and fields to the validation engine
        $("#registerForm").validationEngine();
    });
</script>

Do you see anything that I am doing wrong? A demo working page for this jQuery plugin is here.

Answer 1

Its mandatory to use an ID attribute for the input tags. So write an ID attribute to the input tag that you need to provide validation using validation engine plugin.