JSFiddle - React, Tailwind, and code Playground

HTML

<input type="button" value="Try me!" id="input1" />

JavaScript

var popup;

$(document).ready(function() 
                  { 
                      popup = window.open("http://fiddle.jshell.net");
                      $("#input1").click(function() { 
                          try {
                                popup.document.window.alert(1);
                          }
                          catch (e) { alert(e.message); }
                      });
                  }
                 );