JSFiddle - React, Tailwind, and code Playground

HTML

<script src="http://ajax.aspnetcdn.com/ajax/jquery.validate/1.9/jquery.validate.min.js"></script>
<form id="form">
    <ul>
        <li>
    <label for="name">Name:</label>
<input type="text" name="name" id="name" />

    <span id="errorname" class="error"></span>
                </li>
        <li>
    <label for="firstname">First Name: </label>
    <input id="firstname" type="text" name="firstname" />
    <span id="errorfirstname" class="error"></span>
        </li>
</ul>
<input type="submit" />
</form>

CSS

.error { color: red; }

JavaScript

$(document).ready(function() {
    $("#form").validate({
        rules: {
            name: {
                required: true
            },
            firstname: {
                required: true
            }
        },
        messages: {
            name: {
                required: "Enter name"
            },
            firstname: {
                required: "Enter firstname"
            }
        },
        errorPlacement: function ($error, $element) {
            var name = $element.attr("name");
            
            $("#error" + name).append($error);
        }
    });
});