<!DOCTYPE html> <html lang="en"> <head> <meta charset="UTF-8"> <meta name="viewport" content="width=device-width, initial-scale=1.0"> <meta http-equiv="X-UA-Compatible" content="ie=edge"> <title>Document</title> </head> <body> 城市：<input type="text" id="city" name="city"><br> 空气质量：<p id="aqi"></p> <script> var arry = [["北京",100],["上海",90],["大连",50],["沈阳",90]]; var ocity = document.getElementById("city"); var oaqi = document.getElementById("aqi"); ocity.onblur = function(){ for(i=0;i<arry.length;i++){ if(arry[i][0] == ocity.value){ oaqi.innerHTML= arry[i][1]; break; }else{oaqi.innerHTML = "请输入城市名称！";} } } </script> </body> </html>
实现城市空气指数查询（不包括自动获取数据）
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转载自www.cnblogs.com/wangbingblog/p/11343675.html
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