note/speed.html at master · luoye10/note · GitHub

1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>speed test</title>
    <style>
        .container{
            width: 400px;
            height: 300px;
            margin: 50px auto;
            position: relative;
            background: aqua;
        }
        .line{
            width: 6px;
            height: 100px;
            background: #6cf;
            position: absolute;
            left: 197px;
            bottom: 10px;
            transform-origin: bottom;
            transform: rotate(-90deg);
            transition: all 1s;
        }
    </style>
</head>
<body>
    <div class="container">
        <div class="line"></div>
    </div>
    <script>
        var xhr = new XMLHttpRequest();
        var time = Date.now();
        xhr.open('get', 'https://gank.io/api/v2/banners')
        xhr.onreadystatechange = function() {
            if(xhr.readyState === 4 && xhr.status === 200) {
                var t = Date.now();
                var length = xhr.getResponseHeader('Content-Length');
                var s = Math.floor(length / 1024 * 1000 / (t - time));
                console.log(t - time)
                console.log('当前速度' + s + 'kb/s');
            }
        }
        xhr.send(null)
    </script>
</body>
</html>