<!DOCTYPE html> <html> <head> <meta charset="utf-8"> <title>HTML5-WebWorker</title> </head> <body> web worker实时时间：<div id="workerTime"></div> <br /> 主线程获取当前时间：<div id="curTime"></div> <button onclick="mainthread()">主线程获取时间</button> <script type="text/javascript"> /* * Web worker的运行原理和两种线程的详细说明 : http://www.ibm.com/developerworks/cn/web/1112_sunch_webworker/ */ var interval; if (typeof Worker != undefined) { var worker = new Worker("js/webworker.js"); worker.onmessage = function (event) { document.getElementById("workerTime").textContent = event.data; } interval = setInterval('worker.postMessage("1000000")', 1000); } function mainthread() { document.getElementById("curTime").textContent = new Date(); } function stop() { clearInterval(interval); worker.terminate(); } setTimeout(stop, 60000);//60秒之后清理interval </script> </body> </html>
webworker.js
onmessage = function(event) { var msg = event.data; for (var i = 0; i < msg; i++) { if (!!console && i % 500 == 0) { console.info(i); } } var d = new Date(); postMessage(d); }