JavaScript workers

Web workers

// Client code

var worker = new Worker('worker.js');
worker.onmessage = function(message) {
  alert(message.data);
});
worker.postMessage("");

Worker code

// worker.js

self.onmessage = function(message) {
  alert(message.data);
}
self.postMessage("");

Message data

// [MessageEvent]
bubbles: false
cancelBubble: false
cancelable: false
clipboardData: undefined
currentTarget: Worker
data: "Hello"
defaultPrevented: false
eventPhase: 0
lastEventId: ""
origin: ""
ports: Array[0]
returnValue: true
source: null
srcElement: Worker
target: Worker
timeStamp: 1344821022383
type: "message"