Edit in JSFiddle

<form id="validate-me-plz">
    <div>
        Required: <input type="text" name="required" data-rule-required="true" />
    </div>
    <div>
        Required w/custom message: <input type="text" name="required-sassy" data-rule-required="true" data-msg-required="Please enter SOMETHING." />
    </div>
    <div>
        Email: <input type="text" name="email" data-rule-email="true"/>
    </div>
    <div>
        Email w/custom message: <input type="text" name="anotherEmail" data-rule-email="true" data-msg-email="Please enter a valid email address you dummy." />
    </div>
    <div>
        <input type="submit" value="Validate!" />
    </div>
</form>

$('#validate-me-plz').validate();