Question

I have a JavaScript that deals with with detection whether the page is in frames or not. I used top.frames[] etc. and everything works fine.

In this script I noticed that I can use “window” or “self” interchangeably and everything still works. Is “window” same as “self” when used in HTML page?

Answer 1

From Javascript: The Definitive Guide:

The Window object defines a number of
properties and methods that allow you
to manipulate the web browser window.
It also defines properties that refer
to other important objects, such as
the document property for the
Document object. Finally, the Window
object has two self-referential
properties, window and self. You
can use either global variable to
refer directly to the Window object.

In short, both window and self are references to the Window object, which is the global object of client-side javascript.