window.open to center of screen

Question

I am using window.open to open a popup window like so:

Answer 1

Also you can try:

$('a.popup-window').on('click', function(){
    var w = 880, h = 600,
        left = Number((screen.width/2)-(w/2)), tops = Number((screen.height/2)-(h/2)),
        popupWindow = window.open(this.href, '', 'toolbar=no, location=no, directories=no, status=no, menubar=no, scrollbars=no, resizable=1, copyhistory=no, width='+w+', height='+h+', top='+tops+', left='+left);
    popupWindow.focus(); return false;
});

And call:

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