It’s all determined by your browser’s settings. Using window.open tells the browser to open something new, then the browser opens up what is chosen in its settings – tab or window. In the browsers you tested with, change the settings to open in a new window instead of a tab and you’ll see the others’ solutions are wrong.
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(and not a new window) – stack overflow, opeb a url in a new tab (and not a new window) – stack overflow, opem a url in a new tab (and not a new window) – stack overflow, opej a url in a new tab (and not a new window) – stack overflow, opeh a url in a new tab (and not a new window) – stack overflow, open z url in a new tab (and not a new window) – stack overflow, open s url in a new tab (and not a new window) – stack overflow, open w url in a new tab (and not a new window) – stack overflow, open q url in a new tab (and not a new window) – stack overflow, open a yrl in a new tab (and not a new window) – stack overflow, open a hrl in a new tab (and not a new window) – stack overflow, open a jrl in a new tab (and not a new window) – stack overflow, open a irl in a new tab (and not a new window) – stack overflow, open a 8rl in a new tab (and not a new window) – stack overflow, open a 7rl in a new tab (and not a new window) – stack overflow, open a uel in a new tab (and not a new window) – 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overflow, open a url in a new twb (and not a new window) – stack overflow, open a url in a new tqb (and not a new window) – stack overflow, open a url in a new tav (and not a new window) – stack overflow, open a url in a new tan (and not a new window) – stack overflow, open a url in a new tah (and not a new window) – stack overflow, open a url in a new tag (and not a new window) – stack overflow, open a url in a new tab (znd not a new window) – stack overflow, open a url in a new tab (snd not a new window) – stack overflow, open a url in a new tab (wnd not a new window) – stack overflow, open a url in a new tab (qnd not a new window) – stack overflow, open a url in a new tab (abd not a new window) – stack overflow, open a url in a new tab (amd not a new window) – stack overflow, open a url in a new tab (ajd not a new window) – stack overflow, open a url in a new tab (ahd not a new window) – stack overflow, open a url in a new tab (ans not a new window) – stack overflow, open a url in a 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