Question

98

How to detect popup window close event

rated 0 times [ 100] [ 2] / answers: 1 / hits: 35058 / 9 Years ago, mon, july 20, 2015, 12:00:00

javascript

document.querySelector('#share').onclick = function () {

    var popup = window.open('http://www.facebook.com/sharer/sharer.php?u=http://www.google.com', '', width=400, height=400);



    popup.onbeforeunload = function() {

        alert('unload');

    }



    return false;

};

HTML

<a id=share href=#>share</a>

Two things:

I want to do something after user finish the facebook share thing, if I share the page by open window the window will be auto close after everything is done, so I want to use beforeload event to imitate after sharing callback, but I can't get it when popup is closed.

If user just turn off the window or cancel sharing will also trigger the event, so it's not the best solution, is there any facebook sharing successful callback api?

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3 Years ago

answered 9 Years ago devlin · Accepted Answer

It does not work due to cross domain calls. To get the unload event you need to call a popup instead, which has the wanted url in an iframe.

document.querySelector('#share').onclick = function(){

    var popup = window.open('popup.html', '', width=400, height=400);



    popup.onbeforeunload = function(){

        console.log('unload');

    }

};

popup.html

<iframe src = 'http://www.facebook.com/sharer/sharer.php?u=http://www.google.com'></iframe>