MessageEvent.origin

The origin read-only property of the MessageEvent interface is a USVString representing the origin of the message emitter.

Syntax

var origin = messageEvent.origin;

Value

A USVString representing the origin.

Example

myWorker.onmessage = function(e) {
  result.textContent = e.data;
  console.log('Message received from worker');
  console.log(e.origin);
};

Specifications

Specification Status Comment
HTML Living Standard
The definition of 'MessageEvent: origin' in that specification. 		Living Standard

Browser compatibility

BCD tables only load in the browser

See also

  • ExtendableMessageEvent — similar to this interface but used in interfaces that needs to give more flexibility to authors.