This is an experimental technology
Because this technology's specification has not stabilized, check the compatibility table for the proper prefixes to use in various browsers. Also note that the syntax and behavior of an experimental technology is subject to change in future versions of browsers as the spec changes.

The Screen.unlockOrientation method removes all the previous screen locks set by the page/app.

Note: This method only works for installed Web apps or for Web pages in full-screen mode.


var unlocked = window.screen.unlockOrientation();

Return value

Returns true if the orientation was successfully unlocked or false if the orientation couldn't be unlocked.


var unlockOrientation = screen.unlockOrientation || screen.mozUnlockOrientation || screen.msUnlockOrientation || (screen.orientation && screen.orientation.unlock);

if (unlockOrientation()) {
  // orientation was unlocked
} else {
  // orientation unlock failed


Specification Status Comment
Screen Orientation API
The definition of 'Screen Orientation' in that specification.
Working Draft Draft specification

Browser compatibility

Feature Chrome Firefox (Gecko) Internet Explorer Opera Safari
Basic support Not supported (Yes) moz[1] 11 ms[2] Not supported Not supported
Feature Android Chrome for Android Firefox Mobile (Gecko) IE Mobile Opera Mobile Safari Mobile
Basic support Not supported (Yes)[3] (Yes) moz[1] Not supported Not supported Not supported

[1] This API is currently in draft form. It is only implemented as a prefixed method (mozUnlockOrientation) in B2G and Firefox for Android.

[2] This API is implemented using a prefix (msUnlockOrientation) in Internet Explorer for Windows 8.1 and Windows RT 8.1. It is not supported on Windows 7.

[3] This API is implemented with the draft version that uses the window.screen.orientation.lock / window.screen.orientation.unlock syntax

See also


© 2016 Mozilla Contributors
Licensed under the Creative Commons Attribution-ShareAlike License v2.5 or later.

API CSSOM View Method NeedsMarkupWork Screen Orientation