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index.html
| 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 | <!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 = null; function startWorker(){ if(typeof(Worker)!=="undefined"){ if(w==null){ w=new Worker("worker.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(){ if(w==null){ return; } w.terminate(); w = null; } </ script > </ body > </ html > |
worker.js
| 1 2 3 4 5 6 7 8 9 | var i=0; function timedCount(){ i=i+1; postMessage(i); setTimeout( "timedCount()" ,500); } timedCount(); |
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