<!DOCTYPE html>
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8"/>
<title></title>
<script type="text/javascript">
//创建线程 work对象
var work = new Worker("work.js");
//发送消息
work.postMessage("100");
// 监听消息
work.onmessage = function(event) {
alert(event.data);
};
</script>
</head>
<body>
</body>
</html>
work.js
onmessage = function (event) {
//从1加到num
var num = event.data;
var result = 0;
for (var i = 1; i <= num; i++) {
result += i;
}
postMessage(result);
}
原文：http://www.cnblogs.com/leijuan/p/7639163.html