JSFiddle - React, Tailwind, and code Playground

HTML

<script src="https://raw.github.com/douglascrockford/JSON-js/master/json.js"></script>
<form action="" method="post">first Name:
    <input type="text" name="first_name" />
    <br/>last name:
    <input type="text" name="last_name" />
    <br/>Widget URL:
    <input type="text" name="zip" />
    <br/>Support:
    <br/>span3:
    <input type="checkbox" name="name" value="bee" />
    <br/>span6:
    <input type="checkbox" name="name" value="ms" />
    <br/>span12:
    <input type="checkbox" name="name" value="edc" />
    <br/>
    <p>
        <input type="button" value='submit' onclick="process();return false;" />
    </p>
</form>

JavaScript

function process() {
    console.log($('input[name="first_name"]'));
    var data = {};
    data["first_name"] = $('input[name="first_name"]').val();
    data["last_name"] = $('input[name="last_name"]').val();
    
    console.log(data);
    alert(JSON.stringify(data));
}