<!doctype html>
<html>
<head>
<title></title>
<meta charset = "utf-8"/>
</head>
<style>
</style>
<body>
<select id="one">
<option value="">请选择省份</option>
</select>
<select id="two">
<option value="">请选择城市</option>
</select>
<select id="three">
<option value="">请选择区域</option>
</select>
<script type="text/javascript" src="js/jquery-1.12.0.js"></script>
<script type="text/javascript">
/*
1.搭建框架
2.给省份和城市绑定change事件
*/
$(function(){
var province = [
{"name" : "广东省" ,
"city" : [
{
"name" : "广州市" ,
"area" : ["越秀区","荔湾区","海珠区","天河区,白云区"]
},
{
"name" : "深圳市" ,
"area" : ["福田区","罗湖区","南山区","宝安区","龙岗区"]
}
]
},
{"name" : "浙江省" ,
"city" : [
{
"name" : "杭州市" ,
"area" : ["上城区","下城区","江干区","西湖区"]
},
{
"name" : "丽水" ,
"area" : ["莲都区","松阳县","遂昌县","云和县"]
}
]
},
{"name" : "江西省" ,
"city" : [
{
"name" : "南昌市" ,
"area" : ["东湖区","西湖区","青云谱区","湾里区"]
},
{
"name" : "九江市" ,
"area" : ["浔阳区","庐山区","瑞昌市","九江县"]
},
{
"name" : "赣州市" ,
"area" : ["章贡区","南康区","上犹县","赣县"]
}
]
},
]
// 二级联动
$("#two").change(function(){
var one_index = $("#one option:selected").index()
var two_index = $("#two option:selected").index()
var three = $("#three")
three.empty().append("<option>请选择区域</option>")
if(two_index > 0){
var area = province[one_index-1].city[two_index-1].area
for(var i = 0 i < area.length i++){
three.append("<option>"+area[i]+"</option>")
}
}
})
// 一级联动
$("#one").change(function(){
var one_index = $("#one option:selected").index()
var two = $("#two")
console.log(one_index)
two.empty().append("<option>请选择城市</option>")
$("#three").empty().append("<option>请选择区域</option>")//清除
if(one_index > 0){
var city = province[one_index-1].city
console.log(province[one_index-1].city)
for(var i = 0 i < city.length i++){
two.append("<option>"+city[i].name+"</option>")
}
}
})
init()
function init(){
for(var i = 0 i < province.length i++){
$("#one").append("<option>"+province[i].name+"</option>")
}
}
})
</script>
</body>
</html>
<!doctype html><html><head><meta charset="utf-8"><title>联动</title></head><body><select id="s1" onChange="move()"><!-- 根据id获取value，onchange（）触发函数move（）修改二级select的text值实现联动 --><option selected value="s1">-- 请选择 --</option>
<!--默认选中-->
<option value="SC">SC</option>
<option value="BJ">BJ</option>
<option value="TJ">TJ</option></select><select id="s2">
<option selected>-- 请选择 --</option>
<!--默认选中，动态生成option --></select><script>
function move()
{
var s1=document.getElementById("s1")var s2=document.getElementById("s2")<!-- 获取一级和二级的属性-->
var add
if(s1.value=="SC")
{
add=new Array("CD","DZ","MY","NC")<!--比对value值，实现对应二级text值的动态生成-->
}else if(s1.value=="BJ")
{
add=new Array("HD","CY","WFJ")<!--比对value值，实现对应二级text值的动态生成-->
}else if(s1.value=="TJ")
{
add=new Array("TJG","TJ","TJY")<!--比对value值，实现对应二级text值的动态生成-->
}else if(s1.value=="s1")
{
add=new Array("请选择")
}
else
{
add=null<!--若没有就为空，当然不可能出现的-->
}
s2.length=0
for(var i=0i<add.lengthi++) { var ss=new Option() ss.text=add[i].split()[0]
s2.add(ss)
<!--把text值添加到二级select中，显示出来-->
}
}</script></body></html>
