This is an experimental technology
Check the Browser compatibility table carefully before using this in production.
The window.isSecureContext read-only property indicates whether a context is capable of using features that require secure contexts.
Syntax
var isSecure = window.isSecureContext
Examples
Feature detection
You can use feature detection to check whether they are in a secure context or not by using the isSecureContext boolean which is exposed on the global scope.
if (window.isSecureContext) {
// Page is a secure context so service workers are now available
navigator.serviceWorker.register("/offline-worker.js").then(function () {
...
});
}
Specifications
| Specification | Status | Comment |
|---|---|---|
| Secure Contexts | Candidate Recommendation | Initial definition. |
Browser compatibility
We're converting our compatibility data into a machine-readable JSON format. This compatibility table still uses the old format, because we haven't yet converted the data it contains. Find out how you can help!
| Feature | Chrome | Edge | Firefox (Gecko) | Internet Explorer | Opera | Safari (WebKit) |
|---|---|---|---|---|---|---|
| Basic support | (Yes) | (Yes) | 49 (49) | ? | ? | ? |
| Considers window.opener | No support | No support | 49 (49) | ? | ? | ? |
| Feature | Android | Android Webview | Edge | Firefox Mobile (Gecko) | IE Mobile | Opera Mobile | Safari Mobile | Chrome for Android |
|---|---|---|---|---|---|---|---|---|
| Basic support | No support | (Yes) | (Yes) | 49.0 (49) | ? | ? | ? | (Yes) |
| Considers window.opener | No support | (Yes) | No support | 49.0 (49) | ? | ? | ? | ? |
See also
Document Tags and Contributors
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Contributors to this page:
erikadoyle,
mnoorenberghe,
Šime Vidas,
fscholz,
jonathanKingston,
rolfedh,
jpmedley
Last updated by:
erikadoyle,