Question

Opera failed with this code:

var w;

$('button').on('click', function () {
  if (w && !w.closed && window.focus) {
    w.focus();
  } else {
    w = window.open('http://google.com', 'google');
  }
});

After we open new window and go back to parent window, we could not set focus back to child window in Opera. But other browsers work correct. Even IE. Any thoughts?

You could try this code on jsbin

Answer 1

Have a look at the option

Preferences > Advanced > Content > JavaScript options > Allow raising
of windows

There is a screenshot of this preferences dialog near the bottom of this page:
http://www.javascripter.net/faq/windowresizeto.htm