JavaScript open in a new window, not tab

You don't need to use height, just make sure you use _blank, Without it, it opens in a new tab.

For a empty window:

window.open('', '_blank', 'toolbar=0,location=0,menubar=0');

For a specific URL:

window.open('http://www.google.com', '_blank', 'toolbar=0,location=0,menubar=0');

I may be wrong, but from what I understand, this is controlled by the user's browser preferences, and I do not believe that this can be overridden.

Specify window "features" to the open call:

window.open(url, windowName, "height=200,width=200");

When you specify a width/height, it will open it in a new window instead of a tab.

See https://developer.mozilla.org/en-US/docs/Web/API/Window.open#Position_and_size_features for all the possible features.

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