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JavaScript: The Definitive Guide

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Window.parent Property

Name

Window.parent Property---the parent of a frame

Availability

Navigator 2.0, Internet Explorer 3.0

Synopsis

window.parent

Description

The parent property is a read-only reference to the Window object that contains window. If window specifies a top-level window, then parent refers to the window itself. If window is a frame, then the parent property refers to the top-level window or frame that contains window.

Usage

The parent property is generally only useful for frames rather than for top-level windows. With a function like the following, you can use the property to determine whether a given Window object is a top-level window or a frame: 

function is_toplevel(w) { return (w.parent ==index.html w); }

See Also

"Window", "Window.top"

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