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编辑您的代码：
<!DOCTYPE html> <html> <body> <p>计数: <output id="result"></output></p> <button onclick="startWorker()">开始 Worker</button> <button onclick="stopWorker()">停止 Worker</button> <br /><br /> <script> var w; function startWorker() { if(typeof(Worker)!=="undefined") { if(typeof(w)=="undefined") { w=new Worker("/example/html5/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>
查看结果: