JSFiddle - React, Tailwind, and code Playground

HTML

<div id="specialdiv"></div>
<input type="button" value="try to change the function i to do something different" onclick="t.i = function(){alert(data.secret);}"><BR>
<input type="button" value="set function to null out of spite" onclick="t=null;">
 <script type="text/javascript">
    e = function(){var data = { };
    Object.defineProperty(data, 'secret', {
       value: "Hello world!",
       writable : false,
       enumerable : true,
       configurable : false
       });this.z=function(){window.setTimeout("try{document.getElementById('specialdiv').innerHTML =   '"+data.secret+"';t.i.z();}catch(err) {document.body.innerHTML=err;}",5000);}}
        g = function(){};
        g.prototype = new e();e=null;window.t = {}
        Object.defineProperty(window.t, 'i', {
        value: new g(),
        writable : false,
        enumerable : false,
        configurable : false });g = null;
        window.t = Object.freeze(window.t); t = Object.seal(window.t);
        t.i.z();
    </script>