javascript - How to close the window on the latest version of Mozilla Firefox? -

i using mozilla firefox 30.0 , seems doesn't support window.close() anymore.

you may refer on image below or if small you, here link.

here example

i opened website of google using window.open , tried close using window.close() says undefined.

is there other option can using close window using javascript on firefox?

the firebug console unfortunately not display warning goes along it, reads (in regular firefox web console}:

scripts may not close windows not opened script.

this method allowed called windows opened script using window.open method.

so, aren't allowed call window.close() on windows explicitly opened user.

ps: isn't new behavior, around ages (even before firefox called firefox).

ps: give example, allowed this, only, i.e. close window returned window.open:

var w = window.open("http://google.com"); settimeout(function() { w.close(); }, 1000);

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