Worker.postMessage()

myWorker.postMessage(aMessage, transferList);

var myWorker = new Worker('worker.js');

first.onchange = function() {
  myWorker.postMessage([first.value,second.value]);
  console.log('Message posted to worker');
}

second.onchange = function() {
  myWorker.postMessage([first.value,second.value]);
  console.log('Message posted to worker');
}

var myWorker = new ChromeWorker(self.path + 'myWorker.js');

function handleMessageFromWorker(msg) {
    console.log('incoming message from worker, msg:', msg);
    switch (msg.data.aTopic) {
        case 'do_sendMainArrBuff':
            sendMainArrBuff(msg.data.aBuf)
            break;
        default:
            throw 'no aTopic on incoming message to ChromeWorker';
    }
}

myWorker.addEventListener('message', handleMessageFromWorker);

// Ok lets create the buffer and send it
var arrBuf = new ArrayBuffer(8);
console.info('arrBuf.byteLength pre transfer:', arrBuf.byteLength);

myWorker.postMessage(
    {
        aTopic: 'do_sendWorkerArrBuff',
        aBuf: arrBuf // The array buffer that we passed to the transferrable section 3 lines below
    },
    [
        arrBuf // The array buffer we created 9 lines above
    ]
);

console.info('arrBuf.byteLength post transfer:', arrBuf.byteLength);

self.onmessage = function (msg) {
    switch (msg.data.aTopic) {
        case 'do_sendWorkerArrBuff':
                sendWorkerArrBuff(msg.data.aBuf)
            break;
        default:
            throw 'no aTopic on incoming message to ChromeWorker';
    }
}

function sendWorkerArrBuff(aBuf) {
    console.info('from worker, PRE send back aBuf.byteLength:', aBuf.byteLength);

    self.postMessage({aTopic:'do_sendMainArrBuff', aBuf:aBuf}, [aBuf]);

    console.info('from worker, POST send back aBuf.byteLength:', aBuf.byteLength);
}