下拉列表选择默认提交 [英] Dropdownlist selects to default on submit

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本文介绍了下拉列表选择默认提交的处理方法,对大家解决问题具有一定的参考价值,需要的朋友们下面随着小编来一起学习吧!

问题描述





我有一个下拉列表,我绑定数据,点击提交按钮,下拉列表选择默认,有什么问题我的代码?



这是在validation.js文件中保存的jQuery验证:



Hi,

I have a dropdownlist , i'm binding the data, on click of a submit button the dropdownlist selects to default, what is the wrong with my code?

This is the jQuery validation kept in validation.js file:

$(document).ready(function () {

     $('#btnsubmit').click(function () {

         debugger;
         var str = $('#ddl').val();
         if (str == '--Select--') {
             alert('Plz select Country');
             return;
         }


     });


 });

< br $>




我的设计页面是:






And my design page is :

<%@ Page Language="C#" AutoEventWireup="true" CodeFile="Debugging.aspx.cs" Inherits="Debugging" %>

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">

<html xmlns="http://www.w3.org/1999/xhtml">
<head id="Head1" runat="server">
   <title></title>

    <script src="Scripts/jquery-2.0.2.js" type="text/javascript"></script>
    <script src="Scripts/Validations.js" type="text/javascript"></script>

</head>
<body>
   <form id="form1" runat="server">
   <div>

       <asp:DropDownList runat="server" ID="ddl"  ></asp:DropDownList>
       <asp:Button  runat="server" ID="btnsubmit" Text="Submit"/>
   </div>
   </form>
</body>
</html>

推荐答案

(document).ready(function(){
(document).ready(function () {


(< span class =code-string>' #btnsubmit')。click(function(){

debugger;
var str =
('#btnsubmit').click(function () { debugger; var str =


' #DDL')VAL();
if (str == ' - 选择 - '){
alert(' Plz select Country') ;
return ;
}


});


});
('#ddl').val(); if (str == '--Select--') { alert('Plz select Country'); return; } }); });







和我的设计页面是:






And my design page is :

<%@ Page Language="C#" AutoEventWireup="true" CodeFile="Debugging.aspx.cs" Inherits="Debugging" %>

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">

<html xmlns="http://www.w3.org/1999/xhtml">
<head id="Head1" runat="server">
   <title></title>

    <script src="Scripts/jquery-2.0.2.js" type="text/javascript"></script>
    <script src="Scripts/Validations.js" type="text/javascript"></script>

</head>
<body>
   <form id="form1" runat="server">
   <div>

       <asp:DropDownList runat="server" ID="ddl"  ></asp:DropDownList>
       <asp:Button  runat="server" ID="btnsubmit" Text="Submit"/>
   </div>
   </form>
</body>
</html>


这篇关于下拉列表选择默认提交的文章就介绍到这了,希望我们推荐的答案对大家有所帮助,也希望大家多多支持IT屋!

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