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webworker.html
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<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<meta http-equiv="X-UA-Compatible" content="IE=edge">
<title>Web Worker</title>
<link rel="stylesheet" href="">
</head>
<body>
<h3>需要起一个服务器，同源！</h3>
<p>Count numbers: <b id="result">0</b></p>
<button onclick="startWorker()">Start Worker</button>
<button onclick="stopWorker()">Stop Worker</button>
<script>
let worker = null;
function startWorker () {
if (worker) {
console.log("Web Worker正在运行...", worker);
return worker;
} else {
console.log(worker);
worker = new Worker("./webworker.js");
}
if (typeof(Worker) === "undefinde") {
document.querySelector("#result").innerHTML = "你的浏览器不支持Web Worker...";
} else {
// worker = new Worker("./webworker.js");
console.log("开始计数");
worker.postMessage("start");
worker.onmessage = function(event) {
console.log(event);
document.querySelector("#result").innerHTML = event.data;
}
}
}
function stopWorker () {
console.log("停止计数", worker);
worker.terminate();
worker = null;
}
</script>
</body>
</html>