JSFiddle - React, Tailwind, and code Playground

by Chan Wu

HTML

<a id="hinet" href="#">open hinet</a>

JavaScript

console.clear();

document.querySelector('#hinet').onclick = function () {
    var popup = window.open('http://www.facebook.com/sharer/sharer.php?u=http://www.hinet.net', '', "width=400, height=400");
    
    popup.onbeforeunload = function() {
        alert('unload');
    }
   
    return false;
};