The opener property is a reference to the parent window's window object. You can take advantage of this property to perform any action on the opener window via a script in the new window. For example, use the following script in the destination document to change the background color of the window that opened it:

if (window.opener && !window.opener.closed)
  window.opener.document.bgColor = "beige";

Notice that we must check if the opener window still exists before attempting to access its properties.

For a live demo of an application that uses the opener property, go to Tutorial 1, Working with Windows.

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