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.
Specifications
Specification | Status | Comment |
---|---|---|
HTML Living Standard The definition of 'window.top' in that specification. |
Living Standard | |
HTML5 The definition of 'window.top' in that specification. |
Recommendation | Initial definition |
Browser compatibility
The compatibility table on this page is generated from structured data. If you'd like to contribute to the data, please check out https://github.com/mdn/browser-compat-data and send us a pull request.
Desktop | Mobile | |||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|
top | Chrome Full support Yes | Edge Full support 12 | Firefox
Full support
Yes
| IE Full support Yes | Opera Full support Yes | Safari Full support Yes | WebView Android Full support Yes | Chrome Android Full support Yes | Firefox Android Full support Yes | Opera Android Full support Yes | Safari iOS Full support Yes | Samsung Internet Android Full support Yes |
Legend
- Full support
- Full support
- See implementation notes.
- See implementation notes.