crossOriginIsolated

The global crossOriginIsolated read-only property returns a boolean value that indicates whether a SharedArrayBuffer can be sent via a Window.postMessage() call.

This value is dependent on any Cross-Origin-Opener-Policy and Cross-Origin-Embedder-Policy headers present in the response.

Value

A boolean value.

Examples

if (crossOriginIsolated) {
  // Post SharedArrayBuffer
} else {
  // Do something else
}

Specifications

Specification
HTML Standard
# dom-crossoriginisolated-dev

Browser compatibility

BCD tables only load in the browser

See also