MessageEvent: ports property
Note: This feature is available in Web Workers.
The ports read-only property of the
MessageEvent interface is an array of MessagePort objects
containing all MessagePort objects sent with the message, in order.
Value
An array of MessagePort objects.
Examples
js
onconnect = (e) => {
const port = e.ports[0];
port.addEventListener("message", (e) => {
const workerResult = `Result: ${e.data[0] * e.data[1]}`;
port.postMessage(workerResult);
});
port.start(); // Required when using addEventListener. Otherwise called implicitly by onmessage setter.
};
Specifications
Browser compatibility
See also
ExtendableMessageEvent— similar to this interface but used in interfaces that needs to give more flexibility to authors.