JSFiddle - React, Tailwind, and code Playground

HTML

<form action="">
  <input type="text" name="test1">
  <input type="text" name="test2">
  <input type="text" name="test3">
</form>
<div></div>
<button>toJson</button>

JavaScript

$("div").text(JSON.stringify($("form").serializeArray()));
$("button").click(function() {
  $("div").text(JSON.stringify($("form").serializeArray()));
})