JSFiddle - React, Tailwind, and code Playground

by Salustiano Silva

JavaScript

var win = window.open('http://www.google.com', 'google','width=200,height=200,scrollbars=no');   
var timer = setInterval(function() {   
    if(win.closed) {  
        clearInterval(timer);  
        alert('closed');  
    }  
}, 1000);