JSFiddle - React, Tailwind, and code Playground

HTML

<script src="https://cdnjs.cloudflare.com/ajax/libs/js-cookie/2.1.3/js.cookie.min.js"></script>
<h1>I WANT TO ALERT: { foo: 'bar' }</h1>
<p>Not { myVar: 'bar' }</p>

JavaScript

document.onload = Do();
function Do() {
  var myvar = 'foo';
	var obj = {} ;
  obj[myvar] = 'bar';
	Cookies.set('name', obj);
	alert(Cookies.get('name'));
  
}