跟踪多个 window 关闭 javascript（有一个 window 的工作代码）

Question

有人知道使下面的 代码起作用的最佳解决方案 ('crosswindow') 来跟踪函数 openNew() 打开的多个 windows 吗？

它目前只能跟踪一个 window。 我尝试了一些对象，但我不是专家。欢迎所有建议。

Javascript:

 function openNew(href){

    timer = setInterval('polling()',500);
    win = window.open(href, '_blank');

    url=href;
    openTime=0;
    clickTime= (new Date()).getTime();

}

function polling(){

     if (win && win.closed) {

        var closingTime = (new Date()).getTime();
        var diff = ((closingTime-clickTime)/1000);

        clearInterval(timer);
        console.log(url+" closed after " + diff + " secs");
    }  
}

HTML

<a href="http://google.com" onClick="openNew('http://google.com'); return false;" target="_blank">google</a>
<a href="https://facebook.com" onClick="openNew('https://facebook.com'); return false;" target="_blank">facebook</a>

最终的目标是能够从父页面打开多个新的 windows 并且当子 window 关闭时，它会登录到父页面 window.

我做了一个模拟控制台的笔（以避免无限循环警报） http://codepen.io/anon/pen/EjGyQz?editors=101

Answer 1

因此，您只需将对轮询的调用包装在一个闭包中，并将所有变量传递给它，这样就不会覆盖旧变量：

http://codepen.io/anon/pen/GJPqwm?editors=101

function openNew(href){
    var current = window.open(href, '_blank');
    var clickTime= (new Date()).getTime();
    (function(win, url, clickTime) {
        var timer = setInterval(function() { polling(win, timer, url, clickTime) },500);
    })(current, href, clickTime);       
}

function polling(win, timer, url, clickTime){
     if (win && win.closed) {
        var closingTime = (new Date()).getTime();
        var diff = ((closingTime-clickTime)/1000);
        clearInterval(timer);
        //replace console with div log
        document.getElementById('log').innerHTML += url+" closed after " + diff + " secs<br>";
    }  
}

跟踪多个 window 关闭 javascript（有一个 window 的工作代码）

Track multiple window closes javascript (Have working code for one window)

javascript

window.open

window.closed