Valuable Learnings

In one of my current projects, I came across a scenario to play a video based on the users downloading bandwidth. The detection should be done with javascript. There is a technique, to load an image of known size and calculating the bandwidth on basis of time taken to load that image. Though this technique is not 100% reliable, this will give an approximate estimate of bandwidth. Here is the javascript code to find users bandwidth: var userBandwidth = 0; var startTime; var endTime; var imgSize = 39842; var loadTimeInSec; function GetUserBandwidth() { var testImage = new Image(); testImage.src = "bwtest.jpg"; startTime = ( new Date()).getTime(); testImage.onload = CreateDelegate(testImage, DoneWithTest); } function DoneWithTest() { endTime = ( new Date()).getTime(); loadTimeInSec = (endTime - startTime) / 1000; userBandwidth = (imgSize / loadTimeInSec) / 1024; } Here we are loading a...