jQuery Form Validator, example

form-example.html

<form action="" onsubmit="return $(this).validate()">
  <p>
    Name (4 characters minimum):
    <input name="user" data-validation="validate_min_length length4" />
  </p>
  <p>
    Birthdate (yyyy-mm-dd): 
    <input name="birth" data-validation="validate_birthdate" />
  </p>
  <p>
    Website: 
    <input name="website" data-validation="validate_url" />
  </p>
  <p>
    <input type="submit" />
  </p>
</form>