Question

How can you send data using a Worker object?

(a) postMessage()

(b) sendMessage()

(c) Message()

(d) post()

I have been asked this question in examination.

My question is based upon Web Workers in portion Caching, Debugging and Animation of JavaScript

Answer 1

Correct answer is (a) postMessage()

The best I can explain: Once you have a Worker object, you can send data to it with postMessage(). The value you pass to postMessage() will be cloned, and the resulting copy will be delivered to the worker via a message event. postMessage() sends a message — which can consist of any JavaScript object — to the worker’s inner scope.