从文本框中获取文本 [英] Get text from textbox

问题描述

我想从文本框中检索值以进行验证.

但是，当我尝试从文本框中获取值时，会得到未定义的值.

我的按钮代码是:

I want to retrieve value from text boxes to do validation.

However when I am trying to get value from a text box I get undefined value.

my code for button is :

<asp:LinkButton ID="lbLogin" runat="server" OnClientClick="Validation()" OnClick="btnLogin_Click" ValidationGroup="Submit">Login</asp:LinkButton>

文本框是:

text box is:

<asp:TextBox ID="tbPassword" runat="server" TextMode="Password" Width="124px"
CssClass="textbox"></asp:TextBox>

功能是:

And function is :

function Validation() {
           var password = $("#tbPassword").val();
           alert(password);
       }

警报始终显示未定义".

Alert always show "undefined". Is there anything wrong in my function?

推荐答案

(#tbPassword").val(); 警报(密码); }

("#tbPassword").val(); alert(password); }

警报始终显示未定义".我的函数有什么问题吗?

Alert always show "undefined". Is there anything wrong in my function?

嘿，请尝试这个

如果您使用母版页，那么

Hey Try This

if u used master page then

function Validation() {
                  
           var pwd = document.getElementById('cntPlcHolder_tbPassword').value;
           alert(pwd);
       }

其他明智的

other wise

<pre lang="cs">function Validation() {

           var pwd = document.getElementById('tbPassword').value;
           alert(pwd);
       }</pre>

祝你好运

best luck

尝试一下

try this

//jquery

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