js 实现省市级联

来源：互联网发布：dijkstra算法c 代码编辑：程序博客网时间：2024/06/11 17:48

<!DOCTYPE html><html>    <head>        <meta charset="UTF-8">        <title></title>    </head>    <script type="text/javascript">        var shengArr =new Array();        shengArr["广东"]=["广州","深圳","珠海","汕头","韶关"] ;        shengArr["湖南"]=["长沙","张家界","株洲","怀化","常德"] ;        shengArr["湖北"]=["武汉","荆州","宜昌","黄冈","仙桃"] ;        shengArr["安徽"]=["合肥","黄山"] ;        shengArr["河南"]=["郑州","信阳","洛阳"] ;        function getSheng(){            var s =document.getElementById("sheng");            for(var v in shengArr){                s.add(new Option(v,v),null);            }        }        function getCity(){            var s =document.getElementById("sheng");            var c =document.getElementById("city");            var v=s.value;            c.options.length =0;            for(var i in shengArr[v]){                 c.add(new Option(shengArr[v][i],shengArr[v][i]),null);            }        }    </script>    <!--页面加载时获取 省名-->    <body onload="getSheng()">          <!-- 改变省时匹配该省的城市名-->        省：<select id="sheng" onchange="getCity()">             <option>--请选择</option>        </select>        市：<select id="city"></select>    </body></html>

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js 实现 省市级联

js 实现省市级联