JS做出地址选择功能

来源：喜迪情感

这次给大家带来JS做出地址选择功能，JS做出地址选择功能的注意事项有哪些，下面就是实战案例，一起来看一下。

<!DOCTYPE html>
<html>
 <head>
 <metacharset="UTF-8">
 <title></title>
 <script>
 var shenArr = new Array(5);
 shenArr["广东"] = ["广州","深圳","韶关","汕头","茂名"];
 shenArr["湖南"] = ["长沙","张家界","株洲","岳阳","吉首"];
 shenArr["湖北"] = ["武汉","宜昌","荆州","黄冈","仙桃"];
 shenArr["安徽"] = ["合肥","黄山"];
 shenArr["河南"] = ["郑州","开封","洛阳","信阳"];
 function getShen(){
 var s = document.getElementById("shen");
 for(var v in shenArr){
 //把数组键加入到省的下拉框
 s.add(new Option(v,v),null);
 }
 }
 
 function getCity(){
 var s = document.getElementById("shen");
 var c = document.getElementById("city");
 var v = s.value;//省份的名称，也是数组中的键
 c.options.length = 0;//把城市下拉框中的项清除
 
 //循环把某一个省的城市加入到市的下拉框
 for(var i in shenArr[v] ){
 c.add(new Option(shenArr[v][i],shenArr[v][i]),null);
 }
 
 }
 
 </script>
 </head>
 <bodyonload="getShen()">
 省:<selectid="shen"onchange="getCity()">
 <optionvalue="0">--请选择--</option>
 </select>
 市:<selectid="city"></select>
 </body>
</html>

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