1 <!DOCTYPE html>
2 <html xmlns="http://www.w3.org/1999/xhtml">
3 <head>
4 <meta http-equiv="Content-Type" content="text/html; charset=utf-8"/>
5 <title>三级联动菜单</title>
6 <link href="css/demo.css" rel="stylesheet" />
7 <script src="js/jquery-1.10.2.min.js"></script>
8 <script src="js/demo.js"></script>
9 </head>
10 <body>
11 <select id="selProvince">
12 <option>---请选择---</option>
13 </select>
14 <select id="selCity">
15 <option>---请选择---</option>
16 </select>
17 <select id="selCountry">
18 <option>---请选择---</option>
19 </select>
20 </body>
21 </html>
1 /// <reference path="jquery-1.10.2.min.js" />
2 var aProvince = ["河北省", "山西省", "湖北省"];
3 var aCity = [["石家庄市", "张家口市", "承德市", "秦皇岛市"], ["太原市", "朔州市", "大同市", "阳泉市"], ["武汉市", "孝感市", "宜昌市", "襄阳市"]];
4 var aCountry = [[["无极县", "赵县", "栾城县"], ["沽源县", "尚义县", "阳原县"], ["平泉县", "滦平县", "隆化县"], ["抚宁县", "卢龙县", "昌黎县"]], [["清徐县", "阳曲县", "娄烦县"], ["山阴县", "应县", "右玉县"], ["左云县", "阳高县", "天镇县"], ["盂县", "平定县", "矿区"]],
5 [["武昌区", "洪山区", "东湖新区"], ["云梦县", "大悟县", "应城市"], ["秭归县", "远安县", "枝江市"], ["枣阳市", "老河口市", "谷城县"]]];
6 var num1 = 0;
7 var num2 = 0;
8 $(function () {
9 for (var i = 0; i < aProvince.length; i++) {
10 $("#selProvince").append("<option>" + aProvince[i] + "</option>");
11 }
12
13 $("#selProvince").change(function () {
14 $("#selCity").children("option").not(":eq(0)").remove();
15 $("#selCountry").children("option").not(":eq(0)").remove();
16 num1 = $(this).children("option:selected").index();
17 if (num1 > 0) {
18 var aC = aCity[num1 - 1];
19 for (var i = 0; i < aC.length; i++) {
20 $("#selCity").append("<option>" + aC[i] + "</option>");
21 }
22 }
23 });
24
25 $("#selCity").change(function () {
26 $("#selCountry").children("option").not(":eq(0)").remove();
27 num2 = $(this).children("option:selected").index();
28 if (num2 > 0) {
29 var aC = aCountry[num1 - 1][num2 - 1];
30 for (var i = 0; i < aC.length; i++) {
31 $("#selCountry").append("<option>" + aC[i] + "</option>");
32 }
33 }
34 });
35
36 });
