ife-js-task/task14.html at master · glt18/ife-js-task · 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
<!DOCTYPE html>
<html>
<head>
      <title>Task 14</title>
      <meta charset="utf-8">
</head>
<body>
    <h3>污染城市列表：</h3>
    <ul id="ul"></ul>
    <script type="text/javascript">
        var aqiData = [
            ["北京",80],
            ["南京",40],
            ["西安",90],
            ["海南",50],
            ["上海",75],
            ["重庆",82]
        ];
        var ul = document.getElementById('ul');
        (function() {
            for(var i = 0 ; i < aqiData.length-1 ; i++ ) {
                for(var j = 0 ; j < aqiData.length-i-1 ; j++ ) {
                    var t;
                    if(aqiData[j][1] < aqiData[j+1][1]) {
                        t = aqiData[j] ;
                        aqiData[j] = aqiData[j+1] ;
                        aqiData[j+1] = t ;
                    }
                }
            }
        })();
        for(var i = 0 ; i < 3 ; i++ ) {
            var count = i+1 ;
            if (aqiData[i][1] > 60) {
                var cli = document.createElement("li");
                var li = ul.appendChild(cli);
                li.innerHTML = ("第" + count + "名：" + aqiData[i]);
            }
        }
    </script>
</body>
</html>