This is an experimental technology
Check the Browser compatibility table carefully before using this in production.
The crossOriginIsolated read-only property of the WindowOrWorkerGlobalScope interface returns a boolean value that indicates whether a SharedArrayBuffer can be sent via a Window.postMessage() call.
This value is dependant on any Cross-Origin-Opener-Policy and Cross-Origin-Embedder-Policy headers present in the response.
Syntax
var myCrossOriginIsolated = self.crossOriginIsolated; // or just crossOriginIsolated
Value
A boolean value
Examples
if(crossOriginIsolated) {
// Post SharedArrayBuffer
} else {
// Do something else
}
Specifications
| Specification | Status | Comment |
|---|---|---|
| HTML Living Standard | Not yet merged into the spec |
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.
Update compatibility data on GitHub
| Desktop | Mobile | |||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
crossOriginIsolated | Chrome No support No | Edge No support No | Firefox Full support 72 | IE No support No | Opera No support No | Safari No support No | WebView Android No support No | Chrome Android No support No | Firefox Android No support No | Opera Android No support No | Safari iOS No support No | Samsung Internet Android No support No |
Legend
- Full support
- Full support
- No support
- No support
- Experimental. Expect behavior to change in the future.
- Experimental. Expect behavior to change in the future.
- Non-standard. Expect poor cross-browser support.
- Non-standard. Expect poor cross-browser support.