JSFiddle - React, Tailwind, and code Playground

HTML

<script src="https://code.jquery.com/jquery-1.12.4.min.js"></script>
<pre></pre>

JavaScript

var myData = [];

var myObj = { product: "phone", quantity: 100, color: "red", secondColor:'', imei: "43904325" };

myData.push(myObj);

$('pre').html(JSON.stringify(myData,null,4));