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index.html
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<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<title>IFE JavaScript Task 01</title>
</head>
<body>
<h3>污染城市列表</h3>
<ul id="aqi-list">
<!--
<li>第一名:福州(样例),10</li>
<li>第二名:福州(样例),10</li> -->
</ul>
<script type="text/javascript">
var aqiData = [
["北京", 90],
["上海", 50],
["福州", 10],
["广州", 50],
["成都", 90],
["西安", 100]
];
(function () {
/*
在注释下方编写代码
遍历读取aqiData中各个城市的数据
将空气质量指数大于60的城市显示到aqi-list的列表中
*/
var li = '';
var grade = ["一","二","三","四","五","六"];
var arr = aqiData.filter(function (x) {
return x[1] > 60;
});
arr = arr.sort(function (x, y) {
return y[1] - x[1];
});
for (var i = 0; i < arr.length; i++) {
li += '<li>'+ '第' + grade[i] + '名' + arr[i][0] + '(样例),' + arr[i][1] + '</li>';
}
document.getElementById('aqi-list').innerHTML = li;
// for (var i= 0; i < aqiData.length; i++) {
// if (aqiData[i][1] > 60) {
// li += '<li>'+ aqiData[i][0] + '(样例),' + aqiData[i][1] + '</li>';
// }
// }
// document.getElementById('aqi-list').innerHTML = li;
})();
</script>
</body>
</html>