javascript - Using web workers with chrome extension -

what trying achieve here, execute xhrhttprequest() on worker speedup extension. using worker_proxy.js here. working totally fine except unable figure out how pass string worker. here code:

manifest.json

"permissions": [     "alarms",     "activetab",     "tabs",     "webnavigation",     "http://*/*",      "https://*/*",     "cookies"    ],     "options_page": "options.html",     "background": {     "persistent": false,     "scripts": [ "worker_proxy.js","background.js"]   },   "content_scripts": [     {       "matches": ["https://*/*","http://*/*"],       "js": ["jquery-2.1.4.js","hmac-sha256.js","enc-base64-min.js","worker_proxy.js","content.js"]     }   ],   "web_accessible_resources": [ "worker_proxy.html","worker.js"], 

worker.js

var somestring=getstringfromcontentjs()  var xhr=new xmlhttprequest(); var request="getgoogle.com" xhr.open("get", request, false); xhr.send(somestring);  postmessage('result\n' + xhr.responsetext); 

content.js

  var az_worker = new worker(chrome.runtime.geturl('getazproducts.js'));   az_worker.onmessage = function(event) {     alert('message worker: ' + event.data);   }; 

i able receive data worker.js how send data it, i.e.,

var somestring=getstringfromcontentjs()

to send data worker, add following top of worker.js:

self.onmessage = function(event) {     // event.data }; 

and use az_worker.postmessage(somestring); send data it.

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but code unnecessarily complex. if goal "to speedup extension", should not using web workers make synchronous xhr, use asynchronous xhr on main thread. web workers great cpu-bound tasks, don't provide advantage i/o tasks such network requests.

see https://developer.mozilla.org/en-us/docs/ajax/getting_started , https://developer.mozilla.org/en-us/docs/web/api/xmlhttprequest/using_xmlhttprequest tutorials on using xmlhttprequest.