1 <!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
2 <html>
3 <head>
4 <meta http-equiv="content-type" content="text/html; charset=UTF-8">
5 <script type="text/javascript" src="../js/jquery-1.9.1.js"></script>
6 </head>
7 <body>
8 <input type="button" value="选中1号"/>
9 <input type="button" value="选中2号"/>
10 <select>
11 <option>0号</option>
12 <option>1号</option>
13 <option>2号</option>
14 <option>3号</option>
15 </select>
16 <hr>
17 <input type="button" value="选中北京和重庆"/>
18 <select multiple size="4">
19 <option>北京</option>
20 <option>上海</option>
21 <option>广州</option>
22 <option>重庆</option>
23 </select>
24 <script type="text/javascript">
25 $("input[value='选中1号']").click(function(){
26 //alert("选中1号");
27 $("select").val("1号");
28 });
29 $("input[value='选中2号']").click(function(){
30 //alert("选中2号");
31 $("select").val("2号");
32 });
33 $("input[value='选中北京和重庆']").click(function(){ //这里有疑问
34 $("select:eq(1)").val(["北京","重庆"]);
35 });
36 </script>
37 </body>
38 </html>
by hacket
