Open a window in a new window tab

Question

I want to open a tab inside an open window. Something like that

(he should open a new window with "google.co.uk" with a new tab "google.de"

newWindow = window.open('http://www.google.co.uk', '', 'width=10');
newWindowTab = newWindow.open('http://www.google.de', '_blank');

but this opens "newWindowTab" only in the window where this code is.

I also tried this to give the window time to load until it (should) open a new tab:

newWindow = window.open('http://www.google.co.uk', '', 'width=10');
setTimeout(function() {
    newWindowTab = newWindow.open('http://www.google.de', '_blank');
}, 500);

But then I get:

Error: permission to access the "open" property

I used firefox. I heard that this is possible in Chrome, but I want to use this script in Firefox.

Answer 1

This is not possible unless the window that opens has the same origin (i.e. the same domain). MDN says this :

, .