inlineworker.js

var createWorker = function(workerFn) {
  // Convert function to string, and get rid of the
  // wrapping `function(){}`
  var workerFnContents = workerFn.toString()
    .replace(/^\s*function[^(]*\([^)]*\)\s*{/igm, '')
    .replace(/}\s*$/, '');
  var blob = new Blob([workerFnContents], {type: 'application/javascript'});
  return new Worker(window.URL.createObjectURL(blob));
};

var myWorker = createWorker(function(){
  postMessage('Worker initialized');
  onmessage = function (message) {
    postMessage("Hi " + message.data);
  };
});

myWorker.onmessage = function (message) {
  console.log("Worker said : " + message.data);
};

myWorker.postMessage('Nadim');