通过js获取DropDownList的选中项
2020-12-13 06:02
标签：style blog class c code java 上面是前台代码,下面是后台代码. 不知道用jQuery怎么写。 通过js获取DropDownList的选中项,搜素材,soscw.com 通过js获取DropDownList的选中项 标签：style blog class c code java 原文地址：http://www.cnblogs.com/hshuai/p/3739424.html
1 html xmlns="http://www.w3.org/1999/xhtml">
2 head runat="server">
3 title>title>
4 script src="Scripts/jquery-1.4.1.min.js" type="text/javascript">script>
5 script type="text/javascript">
6 $(document).ready(function () {
7 //写法1
8 //var ddl = document.getElementById("");
9 //写法2
10 //var ddl=$("#");
11 alert(ddl.selectedIndex);
12 });
13
14
15 function show(obj) {
16 var v = $(obj).val();
17 alert(v);
18 }
19 script>
20 head>
21 body>
22 form id="form1" runat="server">
23 div>
24 asp:DropDownList runat="server" ID="ddlDept" onchange="show(this)" />
25 div>
26 form>
27 body>
28 html>
1 public partial class WebForm1 : System.Web.UI.Page
2 {
3 protected void Page_Load(object sender, EventArgs e)
4 {
5 Liststring> list=new Liststring>(){"aaa","bbb","ccc"};
6 ddlDept.DataSource = list;
7 ddlDept.DataBind();
8 ddlDept.SelectedIndex = 2;
9 }
10 }
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