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<!DOCTYPE html> <html lang="en-US"> <body> <p>Timer: You Have <output id="point">59</output> sec</p> <button onclick="startWorker()">Start Worker</button> <button onclick="stopWorker()">Stop Worker</button> <script> var w; var x = document.getElementById("point"); function startWorker(){ if(typeof(Worker) !== "undefined"){ if(typeof(w) == "undefined"){ w = new Worker("/web-workers.js"); } w.onmessage = function(event){ x.innerHTML = event.data; }; } else{ x.innerHTML = "Sorry, your browser does not support Web Workers"; } } function stopWorker(){ w.terminate(); w = undefined; } </script> <p><strong>Note:</strong> IE 9 and earlier versions do not support Web Workers.</p> </body> </html>
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