1
300<!DOCTYPE html>
<html>
<body>
<p>Count numbers: <output id="result"></output></p>
<button onclick="startWorker()">Start Worker</button>
<button onclick="stopWorker()">Stop Worker</button>
<br /><br />
<script>
var w;
function startWorker()
{
if(typeof(Worker)!=="undefined")
{
if(typeof(w)=="undefined")
{
w=new Worker("demo_workers.js");
}
w.onmessage = function (event) {
document.getElementById("result").innerHTML=event.data;
};
}
else
{
document.getElementById("result").innerHTML="Sorry, your browser does not support Web Workers...";
}
}
function stopWorker()
{
w.terminate();
}
</script>
</body>
</html>
var i=0;
function timeCount(){
i=i+1;
postMessage(i);
setTimeout("timeCount()",500);
}
timeCount();
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运行一个http服务器再试吧。