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最近在公司忙于前端开发 主要做微信小程序跟webApp ，毕竟前面做过Android开发，相对来说难度不大，
今天晚上睡不着 起来写下js代码 想想三级联动在平时开发中经常用到，可能我们一般是网上拷贝代码，今天自己动手参考网上资料来写的
三级联动
*{margin:0;padding:0;}
请选择地区：
--请选择省--
--请选择市--
--请选择区--
//声明省
var oProc = ["安徽","上海","山东"]; //直接声明array
//声明市
var oCity = [
["合肥","淮南","芜湖"],
["浦东","闵行","浦西"],
["济南","青岛","枣庄"]
];
//声明区
var oDist = [
[
["政务区","庐阳区","蜀山区"],
["田家庵区","大通区","九龙岗区"],
["镜湖区","鸠江区","三山区"]
],
[
["浦东1","浦东2","浦东3"],
["闵行1","闵行2","闵行3"],
["浦西1","浦西","浦西3"]
],
[
["历下区","天桥区","长清区"],
["市南区","市北区","李沧区"],
["薛城区","市中区","峄城区"]
]
];
//通过id找到标签元素
var oproc = document.getElementById("proc");
var ocity = document.getElementById("city");
var odist = document.getElementById("dist");
//当页面加载完毕之后
window.onload = function(){
for(var i =0;i |