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task2.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
*/
//筛选出空气质量指数大于60的项
var goodData = aqiData.filter(function(item) {
return (item[1] > 60);
});
//降序排序
goodData.sort(function(value1, value2) {
return (value2[1] - value1[1]);
});
var chineseNum = ["一", "二", "三", "四", "五", "六", "七", "八" ,"九", "十"];
var liStr = '';
for (var i = 0, len = goodData.length; i < len; i++) {
liStr += '<li>'
+ '第' + chineseNum[i] + '名:'
+ goodData[i][0] + ',' + goodData[i][1]
+ '</li>';
}
document.getElementById("aqi-list").innerHTML = liStr;
})();
</script>
</body>
</html>