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Detect internet speed in Javascript // ref. : http://jsfiddle.net/yahavbr/tEFpC/2/ http://stackoverflow.com/questions/5529718/how-to-detect-internet-speed-in-javascript
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var imageAddr = "http://www.tranquilmusic.ca/images/cats/Cat2.JPG" + "?n=" + Math.random(); | |
var startTime, endTime; | |
var downloadSize = 5616998; | |
var download = new Image(); | |
download.onload = function () { | |
endTime = (new Date()).getTime(); | |
showResults(); | |
} | |
startTime = (new Date()).getTime(); | |
download.src = imageAddr; | |
function showResults() { | |
var duration = (endTime - startTime) / 1000; //Math.round() | |
var bitsLoaded = downloadSize * 8; | |
var speedBps = (bitsLoaded / duration).toFixed(2); | |
var speedKbps = (speedBps / 1024).toFixed(2); | |
var speedMbps = (speedKbps / 1024).toFixed(2); | |
alert("Your connection speed is: \n" + | |
speedBps + " bps\n" + | |
speedKbps + " kbps\n" + | |
speedMbps + " Mbps\n" ); | |
} |
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