JSFiddle - React, Tailwind, and code Playground
HTML
<script src="http://jzaefferer.github.com/jquery-validation/jquery.validate.js"></script>
<form method="post" action="<?php echo $_SERVER['PHP_SELF']; ?>" id="contactform">
<input name="fam" type="text" class="required" id="textfield5" />
<input type="submit" value="Отправить">
</form>JavaScript
$(document).ready(function(){ $("#contactform").validate(); $.extend($.validator.messages, { required: "Поле не заполнено" }); });