This is an experimental technology
Because this technology's specification has not stabilized, check the compatibility table for usage 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 specification changes.

The isSecureContext read-only property of the WindowOrWorkerGlobalScope interface returns a boolean indicating whether the current context is secure (true) or not (false).


var isItSecure = self.isSecureContext; // or just isSecureContext


A Boolean.


Specification Status Comment
Secure Contexts
The definition of 'WindowOrWorkerGlobalScope.isSecureContext' in that specification.
Working Draft Initial definition.

Browser compatibility

Feature Chrome Firefox (Gecko) Internet Explorer Opera Safari
Basic support 55 52 (52) ? ? ?
Feature Android Webview Chrome for Android Firefox Mobile (Gecko) IE Mobile Opera Mobile Safari Mobile
Basic support 55 55 52.0 (52) ? ? ?

See also

Document Tags and Contributors

 Contributors to this page: chrisdavidmills, jpmedley
 Last updated by: chrisdavidmills,