JSFiddle - React, Tailwind, and code Playground

HTML

<script src="http://ajax.aspnetcdn.com/ajax/jquery.validate/1.9/jquery.validate.js"></script>
<form id="EditForm" action="Foo" method="post">

    <input type="password" name="password" id="password"/>

    <input type="password" name="cpassword" value="" id="cpassword"/>

    <input type="submit" value="submit"/>

</form>

JavaScript

$('#EditForm').validate({ 
    rules: {
        password: {
            required: true
        },
        cpassword: {
            required: true,
            equalTo: "#password"
        }
    }
});