SO - 14703374 - jquery validator

HTML

<script src="//cdnjs.cloudflare.com/ajax/libs/jquery-validate/1.11.1/jquery.validate.js"></script>
<script src="//cdnjs.cloudflare.com/ajax/libs/jquery-validate/1.11.1/additional-methods.js"></script>
<form class="validatedForm" id="commentForm" method="get" action="">
    <fieldset>
        <input name="user[password]" id="user_password" required/><br>
        <input name="user[password_confirmation]" required/>
    </fieldset>
</form>
<button>Validate</button>

JavaScript

jQuery('.validatedForm').validate({
    rules: {
        "user[password]": {
            minlength: 3
        },
        "user[password_confirmation]": {
            minlength: 3,
            equalTo : "#user_password"
        }
    }
});

$('button').click(function () {
    console.log($('.validatedForm').valid());
});