JSFiddle - React, Tailwind, and code Playground

by Michel Plungjan

HTML

<button onclick="popuponclick()">Click</button>
<span id="my"></span>

JavaScript

var ChildWindow;
function  popuponclick() {
  ChildWindow = window.open('/js/lib/dummy.js',
    'popupWindow',
    'width=700,height=700');
 setTimeout(function() { ChildWindow.addEventListener("unload",OnChildWindowClose)},100)
}
function OnChildWindowClose() {
  this.opener.document.getElementById("my").innerHTML = "suresh";
  this.opener.ChildWindow = null;
};