Window self property

selfA read-only property that returns the window itself.

Syntax:

window.self

Example

if (window.parent.frames[0] != window.self) {
　　　//　This window is not the first frame in the list!
}

All browsers fully support the self property:

Property
self	Yes	Yes	Yes	Yes	Yes

Return Value:	Reference to the window object itself

Window (Window) Reference:window.parent property

Window (Window) Reference:window.top property