crossOriginIsolated

Experimental: This is an experimental technology
Check the Browser compatibility table carefully before using this in production.

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 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
HTML Standard (HTML) # dom-crossoriginisolated-dev

Browser compatibility

	Desktop						Mobile
	Chrome	Edge	Firefox	Internet Explorer	Opera	Safari	WebView Android	Chrome Android	Firefox for Android	Opera Android	Safari on IOS	Samsung Internet
`crossOriginIsolated`	87	87	72	No	73	No	No	87	No	No	No	14.0
`worker_support`	87	87	72	No	73	No	No	87	No	No	No	14.0