The Book of JavaScript, 2nd Edition

Opening Windows

To open a window, use the open() method, which opens a window that has the characteristics you specify as parameters inside its parentheses:

var window_name =
    window.open("some_url", "html_name", "feature1,
feature2,feature3,...");

In this example, I've set up a variable called window_name to refer to the window we're opening. When I want to use JavaScript to change or manipulate what's inside the window, I'll refer to this window as window_name. Here window_name is just a variable—you could use any valid JavaScript variable name, such as fido, in its place if you so desired (see Chapter 2 for variable naming rules).

Manipulating the Appearance of New Windows

The three parameters of the window.open() command control the new window's ...