HTML5-Web Worker API에 대한 자세한 코드 설명

 function loadDemo() 
   { 
      
if
 (typeof(Worker) !== "undefined") 
      { 
         
document
.getElementById("support").innerHTML =  
            "Excellent! Your browser supports HTML5 Web Workers"; 
      } 
   }

    // -------------由页面向worker
发送消息
------------------
      document.getElementById("helloButton").
onclick
 = function() { 
         worker.postMessage("Here's a message 
for
 you"); 
      }
      // -------------页面接收来自worker的消息----------------      
      worker.addEvent
List
ener("message", messageHan
dl
er, true); 
      function messageHandler(e) { 
         // process message from worker 
      } 
      // -------------JavaScript
文件处理
来自页面的消息----------------
      addEventListener("message", messageHandler, true);
      function messageHandler(e) { 
         postMessage("worker says: " + e.data + " too"); 
      }

 // -------------在页面处理来自worker的消息----------------
   worker.addEventListener("error", errorHandler, true);
   function errorHandler(e) { 
      console.log(e.message, e); 
   }

  var t = 
set
Time
out(postMessage, 2000, "delayed message");