window.frameElement

Summary

Returns the element (such as  <iframe>   or  <object> ) in which the window is embedded, or  null   if the window is top-level.

Syntax

var frameEl
 = window.frameElement;

• frameEl   is the element which the window is embedded into, or  null   if the window is top-level.

Example

var frameEl = window.frameElement;

// if we are inside a frame, then change it's URL to 'http://mozilla.org/'

if (frameEl)

  frameEl.src = 'http://mozilla.org/';

Notes

Note that despite its name, the property also works for documents inside  <object>   and other embedding points.