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    Window.top

    Summary

    Returns a reference to the topmost window in the window hierarchy.

    Syntax

    var topWindow = window.top;
    

    Notes

    Where the window.parent property returns the immediate parent of the current window, window.top returns the topmost window in the hierarchy of window objects.

    This property is especially useful when you are dealing with a window that is in a subframe of a parent or parents, and you want to get to the top-level frameset.

    Specification

    HTML5

    Browser compatibility

    Feature Chrome Firefox (Gecko) Internet Explorer Opera Safari
    Basic support ? ? ? ? ?
    Feature Android Firefox Mobile (Gecko) IE Mobile Opera Mobile Safari Mobile
    Basic support ? ? ? ? ?

    Gecko notes

    Note: Starting in Gecko 6.0, this property is correctly read only.

    Document Tags and Contributors

    Last updated by: trevorh,
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