如何使用javascript在asp.net中获得互联网带宽速度？ [英] How to get internet bandwidth speed in asp.net using javascript?

问题描述

如何使用javascript在asp.net中获得互联网带宽速度？

解决方案

参考



http://codecanyon.net/item/javascript-bandwidth-tester/531891 [ ^ ]

试一试：

  var  imageAddr =   http://www.testapplication.com/images/31120037-5mb.jpg; 
  var  downloadSize =  4995374 ;  //   bytes  
 
 window.onload = function（）{
  var  oProgress = document.getElementById（  progress< /跨度>）; 
 oProgress.innerHTML =  正在加载图片，请稍候...; 
 window.setTimeout（MeasureConnectionSpeed， 1 ）; 
}; 
 
函数MeasureConnectionSpeed（）{
  var  oProgress = document.getElementById（  progress）; 
  var  startTime，endTime; 
  var  download =  new  Image（）; 
 download.onload = function（）{
 endTime =（ new  Date（））。getTime（）; 
 showResults（）; 
} 
 
 download.onerror = function（err，msg）{
 oProgress.innerHTML =  图片无效或下载错误; 
} 
 
 startTime =（ new  Date（））。getTime（）; 
  var  cacheBuster =  ？nnn =  + startTime; 
 download.src = imageAddr + cacheBuster; 
 
函数showResults（）{
  var  duration =（endTime  -  startTime）/  1000 ; 
  var  bitsLoaded = downloadSize *  8 ; 
  var  speedBps =（bitsLoaded / duration）.toFixed（ 2 ）; 
  var  speedKbps =（speedBps /  1024 ）。toFixed（ 2 ）; 
  var  speedMbps =（speedKbps /  1024 ）。toFixed（ 2 ）; 
 oProgress.innerHTML =  您的连接速度为：< br /> + 
 speedBps +   bps< br /> + 
 speedKbps + < span class =code-string>  kbps< br /> + 
 speedMbps +   Mbps< br />; 
} 
} 

想法是带有已知文件大小的加载图像，然后在其onload事件中测量在触发该事件之前经过的时间，并将此时间除以图像文件大小。

参考：如何在Javascript中检测互联网速度？

How to get internet bandwidth speed in asp.net using javascript?

解决方案

Refer

http://codecanyon.net/item/javascript-bandwidth-tester/531891[^]

Try this :

var imageAddr = "http://www.testapplication.com/images/31120037-5mb.jpg"; 
var downloadSize = 4995374; //bytes

window.onload = function() {
    var oProgress = document.getElementById("progress");
    oProgress.innerHTML = "Loading the image, please wait...";
    window.setTimeout(MeasureConnectionSpeed, 1);
};

function MeasureConnectionSpeed() {
    var oProgress = document.getElementById("progress");
    var startTime, endTime;
    var download = new Image();
    download.onload = function () {
        endTime = (new Date()).getTime();
        showResults();
    }
    
    download.onerror = function (err, msg) {
        oProgress.innerHTML = "Invalid image, or error downloading";
    }
    
    startTime = (new Date()).getTime();
    var cacheBuster = "?nnn=" + startTime;
    download.src = imageAddr + cacheBuster;
    
    function showResults() {
        var duration = (endTime - startTime) / 1000;
        var bitsLoaded = downloadSize * 8;
        var speedBps = (bitsLoaded / duration).toFixed(2);
        var speedKbps = (speedBps / 1024).toFixed(2);
        var speedMbps = (speedKbps / 1024).toFixed(2);
        oProgress.innerHTML = "Your connection speed is: <br />" + 
           speedBps + " bps<br />"   + 
           speedKbps + " kbps<br />" + 
           speedMbps + " Mbps<br />";
    }
}

the idea is load image with a known file size then in its onload event measure how much time passed until that event was triggered, and divide this time in the image file size.

Hi,

Ref : How to detect internet speed in Javascript?

这篇关于如何使用javascript在asp.net中获得互联网带宽速度？的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！