javascript實現簡單的省市區三級聯動
編輯：關於JavaScript
當我們注冊一個網站，會看到省市區三級聯動，下面簡單介紹一下
<!doctype html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta name="Generator" content="EditPlus®">
<meta name="Author" content="">
<meta name="Keywords" content="">
<meta name="Description" content="">
<title>Document</title>
</head>
<body>
<select id="province" onChange="ck()" >
<option>--請選擇--</option>
</select>
<select id="city">
<option>--請選擇--</option>
</select>
<select id="san">
<option>--請選擇--</option>
</select>
</body>
<script type="text/javascript">
//======================================第一種方法：獲取省市二級聯菜單=============================
//獲取省的id
var prame= document.getElementById("province");
var city= document.getElementById("city");
var san= document.getElementById("san");
//創建省市數組
var cityList=new Array();
//創建另一個數組
var zushu=new Array;
cityList['江西省'] = ['南昌市','撫州市','上饒市','鷹潭市','豐城市','吉安市'];
cityList['河南省'] = ['鄭州市','洛陽市'];
cityList['湖北省'] = ['武漢市','宜昌市'];
cityList['福建省'] = ['福州市','三明市','佛山市'];
zushu['南昌市']=['南昌縣','青雲譜區','蓮塘鎮'];
zushu['撫州市']=['臨川區','雲山鎮','唱凱鎮'];
for(var i in cityList){
prame.add(new Option(i,i),null);
}
prame.onchange=function(){
var prame= document.getElementById("province").value;
var city= document.getElementById("city");
city.options.length=0;
for(var k in cityList[prame]){
city.add(new Option(cityList[prame][k],cityList[prame][k]),null);
}
}
city.onchange=function(){
var city= document.getElementById("city").value;
var san= document.getElementById("san");
san.options.length=0;
for(var k in zushu[city]){
san.add(new Option(zushu[city][k]),(zushu[city][k]),null);
}
}
</script>
<!--------------------------------第二種方法：三級聯動菜單----------------------
<script type="text/javascript">
//獲取省的id
var province=document.getElementById("province");
province.add(new Option("江西省","江西省"),null);
province.add(new Option("福建省","福建省"),null);
province.add(new Option("廣東省","廣東省"),null);
function ck(){
var city=document.getElementById("city");
var num=province.selectedIndex;
city.options.length=0;
switch(num){
case 1:
city.add(new Option("南昌市","南昌市"),null);
city.add(new Option("撫州市","撫州市"),null);
city.add(new Option("上饒市","上饒市"),null);
city.add(new Option("吉安市","吉安市"),null);
break;
case 2:
city.add(new Option("廈門市","廈門市"),null);
city.add(new Option("三明市","三明市"),null);
city.add(new Option("莆田市","莆田市"),null);
city.add(new Option("龍巖市","龍巖市"),null);
break;
case 3:
city.add(new Option("廣州市","廣州市"),null);
city.add(new Option("東莞市","東莞市"),null);
city.add(new Option("保定市","保定市"),null);
city.add(new Option("珠海市","珠海市"),null);
break;
}
var qu=document.getElementById("qu");
var num1=province.selectedIndex;
qu.options.length=0;
switch(num1){
case 1:
qu.add(new Option("臨川區","臨川區"),null);
qu.add(new Option("青雲譜區","青雲譜區"),null);
qu.add(new Option("南昌鎮","南昌鎮"),null);
qu.add(new Option("雲山鎮","雲山鎮"),null);
break;
case 2:
qu.add(new Option("保安縣","保安縣"),null);
qu.add(new Option("福田區","福田區"),null);
qu.add(new Option("將樂縣","將樂縣"),null);
qu.add(new Option("廈門區","廈門區"),null);
break;
case 3:
qu.add(new Option("廣上縣","光上縣"),null);
qu.add(new Option("西莞區","西莞區"),null);
qu.add(new Option("三海縣","三海縣"),null);
qu.add(new Option("廣島區","廣島區"),null);
break;
}
}
</script>-->
</html>
以上所述就是本文的全部內容了，希望大家能夠喜歡。
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