本文實例講述了js簡單網速測試方法。分享給大家供大家參考，具體如下：
運行效果截圖如下：
具體代碼如下：
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN""http://www.w3.org/TR/html4/loose.dtd"><html> <head> <title> New Document </title> <meta http-equiv="Content-Type" content="text/html; charset=gbk"/> <meta name="Generator" content="EditPlus"> <meta name="Author" content="xinmingyang"> <meta name="Keywords" content=""> <meta name="Description" content=""> </head> <body> <SCRIPT language=JavaScript> var st = new Date();</SCRIPT><IMG alt="測試圖片" src="http://www.49028c.com/images/logo.gif" onload="showspeed();"><div id='showtxt'></div><script> var arr=["網速低于50KB","網速在50-100KB之間","網速在100-200KB之間","網速在200-300KB之間","視頻通訊"]; function showspeed() { var filesize =35.4; //measured in KB var et = new Date(); var speed = Math.round(filesize*1000)/(et - st); document.title=speed; var scope=(speed>0 && speed<=50)?0:(speed>50 && speed<=100)?1:(speed>=100 && speed<200)?2:(speed>=200 && speed<300)?3:4; alert(scope) document.getElementById("showtxt").innerHTML = ("您的下載速度為：" + arr[scope] + " (K/秒)") } </script> </body></html>希望本文所述對大家JavaScript程序設計有所幫助。
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