JSFiddle - React, Tailwind, and code Playground

HTML

<input type="button" value="Click me" id="btn"/>

JavaScript

$('#btn').click(function(){
     var popup = window.open('http://www.google.com', '_blank','width=500,height=500');
        var dom = popup.document.body;
        for(i in dom){
            console.log(dom[i]);
        }
});