JSFiddle - React, Tailwind, and code Playground

HTML

<div>
    <form id="myForm" name="myForm" method="POST">
        <fieldset>
            <legend>Register your interest</legend>
            <div id="divpopup">
            <p><label class="title" for="name">Your name:</label>
                <input type="text" name="name" id="name"><br />
                <label class="title" for="email">Your email:</label>
                <input type="text" name="email" id="email"></p>
                <label class="title" for="persons">Persons:</label>
                <input id="personsId" type="text" name="persons" id="persons"></p>
            <p><label for="location" class="title">Your closest center:</label>
                <select class="target" name="location" id="location">
                     <option value="ny">New York</option>
                     <option value="il">Chicago</option>
                     <option value="ca">San Francisco</option>
                </select></p>
            <span class="title">Are you a member?</span>
            <label><input type="radio" name="member" value="yes" /> Yes</label>
            <label><input type="radio" name="member" value="no" /> No</label></p>
            </div>
        </fieldset>
    </form>
    <div class="submit" id="myButton">
        <input type="button" id="btnclick" value="Register" />
    </div>
    <div class="quantity"></div>
</div>

JavaScript

$("document").ready(function() {
    $("#btnclick").click(function() {

               alert('Yeah!');

    });
});