我如何创建一个JavaScript页面,将检测用户的互联网速度,并显示在页面上?比如“你的网速是??/??”Kb / s”。


当前回答

尽管这是旧的和回答,我想分享的解决方案,我做出了它2020年的基础上的影子巫师说不再战争的解决方案

我只是将它合并到一个对象中,该对象具有随时运行的灵活性,并在指定的mbps高于或低于测量结果时运行回调。

可以在包含testConnectionSpeed对象后的任何位置启动测试

/**
* @param float    mbps               - Specify a limit of mbps.
* @param function more(float result) - Called if more mbps than specified limit.
* @param function less(float result) - Called if less mbps than specified limit.
*/
testConnectionSpeed.run(mbps, more, less)

例如:

var testConnectionSpeed = { imageAddr : "https://upload.wikimedia.org/wikipedia/commons/a/a6/Brandenburger_Tor_abends.jpg", // this is just an example, you rather want an image hosted on your server downloadSize : 2707459, // Must match the file above (from your server ideally) run:function(mbps_max,cb_gt,cb_lt){ testConnectionSpeed.mbps_max = parseFloat(mbps_max) ? parseFloat(mbps_max) : 0; testConnectionSpeed.cb_gt = cb_gt; testConnectionSpeed.cb_lt = cb_lt; testConnectionSpeed.InitiateSpeedDetection(); }, InitiateSpeedDetection: function() { window.setTimeout(testConnectionSpeed.MeasureConnectionSpeed, 1); }, result:function(){ var duration = (endTime - startTime) / 1000; var bitsLoaded = testConnectionSpeed.downloadSize * 8; var speedBps = (bitsLoaded / duration).toFixed(2); var speedKbps = (speedBps / 1024).toFixed(2); var speedMbps = (speedKbps / 1024).toFixed(2); if(speedMbps >= (testConnectionSpeed.max_mbps ? testConnectionSpeed.max_mbps : 1) ){ testConnectionSpeed.cb_gt ? testConnectionSpeed.cb_gt(speedMbps) : false; }else { testConnectionSpeed.cb_lt ? testConnectionSpeed.cb_lt(speedMbps) : false; } }, MeasureConnectionSpeed:function() { var download = new Image(); download.onload = function () { endTime = (new Date()).getTime(); testConnectionSpeed.result(); } startTime = (new Date()).getTime(); var cacheBuster = "?nnn=" + startTime; download.src = testConnectionSpeed.imageAddr + cacheBuster; } } // start test immediatly, you could also call this on any event or whenever you want testConnectionSpeed.run(1.5, function(mbps){console.log(">= 1.5Mbps ("+mbps+"Mbps)")}, function(mbps){console.log("< 1.5Mbps("+mbps+"Mbps)")} )

我成功地使用它来加载低分辨率的媒体慢网络连接。你必须玩一点,因为一方面,图像越大,测试就越合理,另一方面,对于慢速连接,测试将花费更长的时间,在我的情况下,我特别不希望慢速连接的用户加载大量mb。

其他回答

我需要一个快速的方法来确定用户连接速度是否足够快,以启用/禁用我正在工作的网站中的某些功能,我做了这个小脚本,平均下载单个(小)图像所需的时间多次,它在我的测试中工作得相当准确,能够清楚地区分3G或Wi-Fi,例如,也许有人可以做一个更优雅的版本,甚至是jQuery插件。

var arrTimes = []; var i = 0; // start var timesToTest = 5; var tThreshold = 150; //ms var testImage = "http://www.google.com/images/phd/px.gif"; // small image in your server var dummyImage = new Image(); var isConnectedFast = false; testLatency(function(avg){ isConnectedFast = (avg <= tThreshold); /** output */ document.body.appendChild( document.createTextNode("Time: " + (avg.toFixed(2)) + "ms - isConnectedFast? " + isConnectedFast) ); }); /** test and average time took to download image from server, called recursively timesToTest times */ function testLatency(cb) { var tStart = new Date().getTime(); if (i<timesToTest-1) { dummyImage.src = testImage + '?t=' + tStart; dummyImage.onload = function() { var tEnd = new Date().getTime(); var tTimeTook = tEnd-tStart; arrTimes[i] = tTimeTook; testLatency(cb); i++; }; } else { /** calculate average of array items then callback */ var sum = arrTimes.reduce(function(a, b) { return a + b; }); var avg = sum / arrTimes.length; cb(avg); } }

最好使用图像来测试速度。但是如果你必须处理zip文件,下面的代码可以工作。

var fileURL = "your/url/here/testfile.zip";

var request = new XMLHttpRequest();
var avoidCache = "?avoidcache=" + (new Date()).getTime();;
request.open('GET', fileURL + avoidCache, true);
request.responseType = "application/zip";
var startTime = (new Date()).getTime();
var endTime = startTime;
request.onreadystatechange = function () {
    if (request.readyState == 2)
    {
        //ready state 2 is when the request is sent
        startTime = (new Date().getTime());
    }
    if (request.readyState == 4)
    {
        endTime = (new Date()).getTime();
        var downloadSize = request.responseText.length;
        var time = (endTime - startTime) / 1000;
        var sizeInBits = downloadSize * 8;
        var speed = ((sizeInBits / time) / (1024 * 1024)).toFixed(2);
        console.log(downloadSize, time, speed);
    }
}

request.send();

对于小于10MB的文件,这将不能很好地工作。您必须在多次下载尝试中运行聚合结果。

这在某种程度上是可能的,但并不真正准确,其思想是加载具有已知文件大小的图像,然后在其onload事件中测量直到该事件被触发所经过的时间,并将此时间除以图像文件大小。

示例可以在这里找到:使用javascript计算速度

应用修复建议的测试用例:

//JUST AN EXAMPLE, PLEASE USE YOUR OWN PICTURE! var imageAddr = "http://www.kenrockwell.com/contax/images/g2/examples/31120037-5mb.jpg"; var downloadSize = 4995374; //bytes function ShowProgressMessage(msg) { if (console) { if (typeof msg == "string") { console.log(msg); } else { for (var i = 0; i < msg.length; i++) { console.log(msg[i]); } } } var oProgress = document.getElementById("progress"); if (oProgress) { var actualHTML = (typeof msg == "string") ? msg : msg.join("<br />"); oProgress.innerHTML = actualHTML; } } function InitiateSpeedDetection() { ShowProgressMessage("Loading the image, please wait..."); window.setTimeout(MeasureConnectionSpeed, 1); }; if (window.addEventListener) { window.addEventListener('load', InitiateSpeedDetection, false); } else if (window.attachEvent) { window.attachEvent('onload', InitiateSpeedDetection); } function MeasureConnectionSpeed() { var startTime, endTime; var download = new Image(); download.onload = function () { endTime = (new Date()).getTime(); showResults(); } download.onerror = function (err, msg) { ShowProgressMessage("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); ShowProgressMessage([ "Your connection speed is:", speedBps + " bps", speedKbps + " kbps", speedMbps + " Mbps" ]); } } <h1 id="progress">JavaScript is turned off, or your browser is realllllly slow</h1>

快速对比“真实”速度测试服务,在使用大图时,差异很小,为0.12 Mbps。

为了确保测试的完整性,您可以在启用Chrome开发工具节流的情况下运行代码,然后查看结果是否符合限制。(credit to user284130:))

需要记住的重要事项:

The image being used should be properly optimized and compressed. If it isn't, then default compression on connections by the web server might show speed bigger than it actually is. Another option is using uncompressible file format, e.g. jpg. (thanks Rauli Rajande for pointing this out and Fluxine for reminding me) The cache buster mechanism described above might not work with some CDN servers, which can be configured to ignore query string parameters, hence better setting cache control headers on the image itself. (thanks orcaman for pointing this out)) The bigger the image size is, the better. Larger image will make the test more accurate, 5 mb is decent, but if you can use even a bigger one it would be better.

尽管这是旧的和回答,我想分享的解决方案,我做出了它2020年的基础上的影子巫师说不再战争的解决方案

我只是将它合并到一个对象中,该对象具有随时运行的灵活性,并在指定的mbps高于或低于测量结果时运行回调。

可以在包含testConnectionSpeed对象后的任何位置启动测试

/**
* @param float    mbps               - Specify a limit of mbps.
* @param function more(float result) - Called if more mbps than specified limit.
* @param function less(float result) - Called if less mbps than specified limit.
*/
testConnectionSpeed.run(mbps, more, less)

例如:

var testConnectionSpeed = { imageAddr : "https://upload.wikimedia.org/wikipedia/commons/a/a6/Brandenburger_Tor_abends.jpg", // this is just an example, you rather want an image hosted on your server downloadSize : 2707459, // Must match the file above (from your server ideally) run:function(mbps_max,cb_gt,cb_lt){ testConnectionSpeed.mbps_max = parseFloat(mbps_max) ? parseFloat(mbps_max) : 0; testConnectionSpeed.cb_gt = cb_gt; testConnectionSpeed.cb_lt = cb_lt; testConnectionSpeed.InitiateSpeedDetection(); }, InitiateSpeedDetection: function() { window.setTimeout(testConnectionSpeed.MeasureConnectionSpeed, 1); }, result:function(){ var duration = (endTime - startTime) / 1000; var bitsLoaded = testConnectionSpeed.downloadSize * 8; var speedBps = (bitsLoaded / duration).toFixed(2); var speedKbps = (speedBps / 1024).toFixed(2); var speedMbps = (speedKbps / 1024).toFixed(2); if(speedMbps >= (testConnectionSpeed.max_mbps ? testConnectionSpeed.max_mbps : 1) ){ testConnectionSpeed.cb_gt ? testConnectionSpeed.cb_gt(speedMbps) : false; }else { testConnectionSpeed.cb_lt ? testConnectionSpeed.cb_lt(speedMbps) : false; } }, MeasureConnectionSpeed:function() { var download = new Image(); download.onload = function () { endTime = (new Date()).getTime(); testConnectionSpeed.result(); } startTime = (new Date()).getTime(); var cacheBuster = "?nnn=" + startTime; download.src = testConnectionSpeed.imageAddr + cacheBuster; } } // start test immediatly, you could also call this on any event or whenever you want testConnectionSpeed.run(1.5, function(mbps){console.log(">= 1.5Mbps ("+mbps+"Mbps)")}, function(mbps){console.log("< 1.5Mbps("+mbps+"Mbps)")} )

我成功地使用它来加载低分辨率的媒体慢网络连接。你必须玩一点,因为一方面,图像越大,测试就越合理,另一方面,对于慢速连接,测试将花费更长的时间,在我的情况下,我特别不希望慢速连接的用户加载大量mb。

我需要类似的东西,所以我写了https://github.com/beradrian/jsbandwidth。这是https://code.google.com/p/jsbandwidth/的重写。

其思想是通过Ajax进行两个调用,一个用于下载,另一个用于通过POST上传。

它应该与jQuery一起工作。ajax或Angular $http。