JSFiddle - React, Tailwind, and code Playground

HTML

<form>
    <input name="one" type="checkbox"/>one<br/>
    <input name="two" type="checkbox"/>two<br/>
    <input type="submit"/>
</form>

JavaScript

$("form").submit(function(){return false});

$("input").change(function(){
    var formData=$('form').serialize();
    $.post('server.php',formData);
    $("body").append("<div>"+(formData?formData:"empty")+"</div>");
});