JavaScript验证在asp.net中无效 [英] JavaScript Validation is not working in asp.net

问题描述

我正在注册表单，对其进行了一些验证，但是id不起作用..无法找到错误。

I working on registering form, have some validation on it, but id doesn't work.. unable to find the error.

<%@ Page Title="" Language="C#" MasterPageFile="~/LoginMP.master" AutoEventWireup="true" CodeFile="RequestForAccount.aspx.cs" Inherits="RequestForAccount" %>

<asp:Content ID="Content1" ContentPlaceHolderID="head" runat="Server">
    <title> Request Account </title>
<script lang="'javascript">
    function ValidateFirstName()
    {
          var Firstname = document.getElementById('<%=TxtBxFirstName.ClientID%>').value;
          if(Firstname.length != 0 || Firstname.length <= 25 || isNaN(Firstname)) {
          }
          else
          {
              alert("Stop! First can only be characters,not null, maximum length 25");
              document.getElementById('<%=TxtBxFirstName.ClientID%>').value = null;
              document.getElementById('<%=TxtBxFirstName.ClientID%>').focus();
          }
      }
      
    function ValidateLastname()
    {
          var Firstname = document.getElementById('<%=TxtBxLastName.ClientID%>').value;
          if (Firstname.length != 0 || Firstname.length <= 25 || isNaN(Firstname)) {
          }
          else {
              alert("Stop! First can only be characters,not null, maximum length 25");
              document.getElementById('<%=TxtBxLastName.ClientID%>').value = null;
              document.getElementById('<%=TxtBxLastName.ClientID%>').focus();
          }
      }
      
    function ValidateCNIC()
    {
          var cnic = document.getElementById('<%=TxtBxCNIC.ClientID%>').value;
          if (isNaN(cnic) || cnic.length > 13) {
              alert("Maximum 13 Numbers and only Numbes are allowed");
              document.getElementById('<%=TxtBxCNIC.ClientID%>').value = null;
              document.getElementById('<%=TxtBxCNIC.ClientID%>').focus();
          }
      }
     
    function ValidateUsername()
    {
          var username = document.getElementById('<%=TxtBxUsername.ClientID%>').value;
          if (username.length != 0 || username.length <= 30 || isNaN(username)) {
          }
          else {
              alert("Stop! Username can only be characters, null, maximum length of 30 ");
              document.getElementById('<%=TxtBxFirstName.ClientID%>').value = null;
              document.getElementById('<%=TxtBxFirstName.ClientID%>').focus()
          }
          
      }
   
    function ValidateEmail(objEmail)
    {
              var reg = /^[a-zA-Z0-9._-]+@[a-zA-Z0-9.-]+\.[a-zA-Z]{2,4}$/;
              if (!reg.test(objEmail.value)) {
                  alert('Not a valid e-mail Address');
                  return false;
              }
      }
  </script>
</asp:Content>
<asp:Content ID="Content2" ContentPlaceHolderID="ContentPlaceHolder1" runat="Server">
    <div style="width: 100%; height: 330px; float: left; line-height: normal; text-align: justify;">
 <%--1st Row--%>
            <div style="width: 45%; height: 30px; margin-removed 1%; float: left; font-family: Calibri; font-size: medium; font-weight: bold; font-style: normal; font-variant: small-caps; text-transform: uppercase; color: #000000; text-align: right; line-height: 30px;">
                <asp:Label ID="Label2" runat="server" Text="First Name" Font-Names="Calibri" Font-Size="Medium" ForeColor="Black" Width="100%"></asp:Label></div>
            <div style="width: 45%; height: 30px; margin-removed 1%; float: left; font-family: Calibri; font-size: medium; font-weight: bold; font-style: normal; font-variant: small-caps; color: #000000; text-align: left; line-height: 30px; margin-removed 10%;">
                <asp:TextBox ID="TxtBxFirstName" runat="server" Font-Names="Calibri" ForeColor="Black" Font-Size="Medium" BackColor="White" BorderColor="Black" BorderStyle="Solid" BorderWidth="1" onBlur="ValidateFirstName();"></asp:TextBox>
                <asp:Label ID="Label7" runat="server" Text="First Name on Govt. Issued NIC" Font-Names="Calibri" Font-Size="x-Small" ForeColor="Black"></asp:Label>
            </div>

            <%--2nd Row--%>
            <div style="width: 45%; height: 30px; margin-removed 2%; float: left; font-family: Calibri; font-size: medium; font-weight: bold; font-style: normal; font-variant: small-caps; text-transform: uppercase; color: #000000; text-align: right; line-height: 30px;">
                <asp:Label ID="Label1" runat="server" Text="Last Name" Font-Names="Calibri" Font-Size="Medium" ForeColor="Black" Width="100%"></asp:Label></div>
            <div style="width: 45%; height: 30px; margin-removed 2%; float: left; font-family: Calibri; font-size: medium; font-weight: bold; font-style: normal; font-variant: small-caps; color: #000000; text-align: left; line-height: 30px; margin-removed 10%;">
                <asp:TextBox ID="TxtBxLastName" runat="server" Font-Names="Calibri" ForeColor="Black" Font-Size="Medium" BackColor="White" BorderColor="Black" BorderStyle="Solid" BorderWidth="1" onBlur="ValidateLastname();"></asp:TextBox>
                <asp:Label ID="Label8" runat="server" Text="Last Name on Govt. Issued NIC" Font-Names="Calibri" Font-Size="x-Small" ForeColor="Black"></asp:Label>
            </div>

            <%--3rd Row--%>
            <div style="width: 45%; height: 30px; margin-removed 2%; float: left; font-family: Calibri; font-size: medium; font-weight: bold; font-style: normal; font-variant: small-caps; text-transform: uppercase; color: #000000; text-align: right; line-height: 30px;">
                <asp:Label ID="Label3" runat="server" Text="National Identity Card No" Font-Names="Calibri" Font-Size="Medium" ForeColor="Black" Width="100%"></asp:Label></div>
            <div style="width: 45%; height: 30px; margin-removed 2%; float: left; font-family: Calibri; font-size: medium; font-weight: bold; font-style: normal; font-variant: small-caps; text-transform: uppercase; color: #000000; text-align: left; line-height: 30px; margin-removed 10%;">
                <asp:TextBox ID="TxtBxCNIC" runat="server" Font-Names="Calibri" ForeColor="Black" Font-Size="Medium" BackColor="White" BorderColor="Black" BorderStyle="Solid" BorderWidth="1" onBlur="ValidateCNIC();"></asp:TextBox>
            </div>

            <%--4th Row--%>
            <div style="width: 45%; height: 30px; margin-removed 2%; float: left; font-family: Calibri; font-size: medium; font-weight: bold; font-style: normal; font-variant: small-caps; text-transform: uppercase; color: #000000; text-align: right; line-height: 30px;">
                <asp:Label ID="Label4" runat="server" Text="User Name" Font-Names="Calibri" Font-Size="Medium" ForeColor="Black" Width="100%"></asp:Label></div>
            <div style="width: 45%; height: 30px; margin-removed 2%; float: left; font-family: Calibri; font-size: medium; font-weight: bold; font-style: normal; font-variant: small-caps; color: #000000; text-align: left; line-height: 30px; margin-removed 10%;">
                <asp:TextBox ID="TxtBxUsername" runat="server" Font-Names="Calibri" ForeColor="Black" Font-Size="Medium" BackColor="White" BorderColor="Black" BorderStyle="Solid" BorderWidth="1" onBlur="ValidateUsername();"></asp:TextBox>
                <asp:Label ID="Label9" runat="server" Text="Alphabets & Numeric Only" Font-Names="Calibri" Font-Size="x-Small" ForeColor="Black"></asp:Label>
            </div>

            <%--5th Row--%>
            <div style="width: 45%; height: 30px; margin-removed 2%; float: left; font-family: Calibri; font-size: medium; font-weight: bold; font-style: normal; font-variant: small-caps; text-transform: uppercase; color: #000000; text-align: right; line-height: 30px;">
                <asp:Label ID="Label5" runat="server" Text="Email" Font-Names="Calibri" Font-Size="Medium" ForeColor="Black" Width="100%"></asp:Label></div>
            <div style="width: 45%; height: 30px; margin-removed 2%; float: left; font-family: Calibri; font-size: medium; font-weight: bold; font-style: normal; font-variant: small-caps; text-transform: uppercase; color: #000000; text-align: left; line-height: 30px; margin-removed 10%;">
                <asp:TextBox ID="TxtBxEmail" runat="server" Font-Names="Calibri" ForeColor="Black" Font-Size="Medium" BackColor="White" BorderColor="Black" BorderStyle="Solid" BorderWidth="1" TextMode="Email"  onBlur="ValidateEmail(this);"></asp:TextBox>
            </div>

            <%--6th Row--%>
            <div style="width: 45%; height: 50px; margin-removed 2%; float: left; font-family: Calibri; font-size: medium; font-weight: bold; font-style: normal; font-variant: small-caps; text-transform: uppercase; color: #000000; text-align: right; line-height: 50px;">
                <asp:Button ID="BtnClear" runat="server" Text="Clear" BackColor="Black" BorderColor="Black" BorderStyle="Solid" BorderWidth="5px" Font-Names="Calibri" Font-Size="Medium" ForeColor="White" Height="40px" Width="100px" OnClick="BtnClear_Click"  />
            </div>
            <div style="width: 45%; height: 50px; margin-removed 2%; float: left; font-family: Calibri; font-size: medium; font-weight: bold; font-style: normal; font-variant: small-caps; text-transform: uppercase; color: #000000; text-align: left; line-height: 50px; margin-removed 10%;">
                <asp:Button ID="Button1" runat="server" Text="Submit" BackColor="Black" BorderColor="Black" BorderStyle="Solid" BorderWidth="5px" Font-Names="Calibri" Font-Size="Medium" ForeColor="White" Height="40px" Width="100px" OnClick="Button1_Click"  />
            </div>
    </div>
</asp:Content>

推荐答案

/;
if (!reg.test(objEmail.value)) {
alert('Not a valid e-mail Address');
return false;
}
}
</script>
</asp:Content>
<asp:Content ID=\"Content2\" ContentPlaceHolderID=\"ContentPlaceHolder1\" runat=\"Server\">
<div style=\"width: 100%; height: 330px;向左飘浮; line-height：normal; text-align: justify;\">
<%--1st Row--%>
<div style=\"width: 45%;身高：30px; margin-removed 1%;向左飘浮; font-family：Calibri; font-size：medium; font-weight：bold; font-style：normal; font-variant: small-caps; text-transform：大写;颜色：＃000000; text-align：right; line-height: 30px;\">
<asp:Label ID=\"Label2\" runat=\"server\" Text=\"First Name\" Font-Names=\"Calibri\" Font-Size=\"Medium\" ForeColor=\"Black\" Width=\"100%\"></asp:Label></div>
<div style=\"width: 45%;身高：30px; margin-removed 1%;向左飘浮; font-family：Calibri; font-size：medium; font-weight：bold; font-style：normal; font-variant: small-caps;颜色：＃000000; text-align：left;线高：30px; margin-removed 10%;\">
<asp:TextBox ID=\"TxtBxFirstName\" runat=\"server\" Font-Names=\"Calibri\" ForeColor=\"Black\" Font-Size=\"Medium\" BackColor=\"White\" BorderColor=\"Black\" BorderStyle=\"Solid\" BorderWidth=\"1\" onBlur=\"ValidateFirstName();\"></asp:TextBox>
<< span class=\"code-leadattribute\">asp:Label ID=\"Label7\" runat=\"server\" Text=\"First Name on Govt. Issued NIC\" Font-Names=\"Calibri\" Font-Size=\"x-Small\" ForeColor=\"Black\"></asp:Label>
</div>

<%--2nd Row--%>
<div style=\"width: 45%;身高：30px; margin-removed 2%;向左飘浮; font-family：Calibri; font-size：medium; font-weight：bold; font-style：normal; font-variant: small-caps; text-transform：大写;颜色：＃000000; text-align：right; line-height: 30px;\">
<asp:Label ID=\"Label1\" runat=\"server\" Text=\"Last Name\" Font-Names=\"Calibri\" Font-Size=\"Medium\" ForeColor=\"Black\" Width=\"100%\"></asp:Label></div>
<div style=\"width: 45%;身高：30px; margin-removed 2%;向左飘浮; font-family：Calibri; font-size：medium; font-weight：bold; font-style：normal; font-variant: small-caps;颜色：＃000000; text-align：left;线高：30px; margin-removed 10%;\">
<asp:TextBox ID=\"TxtBxLastName\" runat=\"server\" Font-Names=\"Calibri\" ForeColor=\"Black\" Font-Size=\"Medium\" BackColor=\"White\" BorderColor=\"Black\" BorderStyle=\"Solid\" BorderWidth=\"1\" onBlur=\"ValidateLastname();\"></asp:TextBox>
<asp:Label ID=\"Label8\" runat=\"server\" Text=\"Last Name on Govt. Issued NIC\" Font-Names=\"Calibri\" Font-Size=\"x-Small\" ForeColor=\"Black\"></asp:Label>
</div>

<%--3rd Row--%>
<div style=\"width: 45%;身高：30px; margin-removed 2%;向左飘浮; font-family：Calibri; font-size：medium; font-weight：bold; font-style：normal; font-variant: small-caps; text-transform：大写;颜色：＃000000; text-align：right; line-height: 30px;\">
<asp:Label ID=\"Label3\" runat=\"server\" Text=\"National Identity Card No\" Font-Names=\"Calibri\" Font-Size=\"Medium\" ForeColor=\"Black\" Width=\"100%\"></asp:Label></div>
<div style=\"width: 45%;身高：30px; margin-removed 2%;向左飘浮; font-family：Calibri; font-size：medium; font-weight：bold; font-style：normal; font-variant: small-caps; text-transform：大写;颜色：＃000000; text-align：left;线高：30px; margin-removed 10%;\">
<asp:TextBox ID=\"TxtBxCNIC\" runat=\"server\" Font-Names=\"Calibri\" ForeColor=\"Black\" Font-Size=\"Medium\" BackColor=\"White\" BorderColor=\"Black\" BorderStyle=\"Solid\" BorderWidth=\"1\" onBlur=\"ValidateCNIC();\"></asp:TextBox>
</div>

<%--4th Row--%>
<div style=\"width: 45%;身高：30px; margin-removed 2%;向左飘浮; font-family：Calibri; font-size：medium; font-weight：bold; font-style：normal; font-variant: small-caps; text-transform：大写;颜色：＃000000; text-align：right; line-height: 30px;\">
<asp:Label ID=\"Label4\" runat=\"server\" Text=\"User Name\" Font-Names=\"Calibri\" Font-Size=\"Medium\" ForeColor=\"Black\" Width=\"100%\"></asp:Label></div>
<div style=\"width: 45%;身高：30px; margin-removed 2%;向左飘浮; font-family：Calibri; font-size：medium; font-weight：bold; font-style：normal; font-variant: small-caps;颜色：＃000000; text-align：left;线高：30px; margin-removed 10%;\">
<asp:TextBox ID=\"TxtBxUsername\" runat=\"server\" Font-Names=\"Calibri\" ForeColor=\"Black\" Font-Size=\"Medium\" BackColor=\"White\" BorderColor=\"Black\" BorderStyle=\"Solid\" BorderWidth=\"1\" onBlur=\"ValidateUsername();\"></asp:TextBox>
<asp:Label ID=\"Label9\" runat=\"server\" Text=\"Alphabets & Numeric Only\" Font-Names=\"Calibri\" Font-Size=\"x-Small\" ForeColor=\"Black\"></asp:Label>
</div>

<%--5th Row--%>
<div style=\"width: 45%;身高：30px; margin-removed 2%;向左飘浮; font-family：Calibri; font-size：medium; font-weight：bold; font-style：normal; font-variant: small-caps; text-transform：大写;颜色：＃000000; text-align：right; line-height: 30px;\">
<asp:Label ID=\"Label5\" runat=\"server\" Text=\"Email\" Font-Names=\"Calibri\" Font-Size=\"Medium\" ForeColor=\"Black\" Width=\"100%\"></asp:Label></div>
<div style=\"width: 45%;身高：30px; margin-removed 2%;向左飘浮; font-family：Calibri; font-size：medium; font-weight：bold; font-style：normal; font-variant: small-caps; text-transform：大写;颜色：＃000000; text-align：left;线高：30px; margin-removed 10%;\">
<asp:TextBox ID=\"TxtBxEmail\" runat=\"server\" Font-Names=\"Calibri\" ForeColor=\"Black\" Font-Size=\"Medium\" BackColor=\"White\" BorderColor=\"Black\" BorderStyle=\"Solid\" BorderWidth=\"1\" TextMode=\"Email\" onBlur=\"ValidateEmail(this);\"></asp:TextBox>
</div>

<%--6th Row--%>
<div style=\"width: 45%;身高：50px; margin-removed 2%;向左飘浮; font-family：Calibri; font-size：medium; font-weight：bold; font-style：normal; font-variant: small-caps; text-transform：大写;颜色：＃000000; text-align：right; line-height: 50px;\">
<asp:Button ID=\"BtnClear\" runat=\"server\" Text=\"Clear\" BackColor=\"Black\" BorderColor=\"Black\" BorderStyle=\"Solid\" BorderWidth=\"5px\" Font-Names=\"Calibri\" Font-Size=\"Medium\" ForeColor=\"White\" Height=\"40px\" Width=\"100px\" OnClick=\"BtnClear_Click\" />
</div>
<div style=\"width: 45%;身高：50px; margin-removed 2%;向左飘浮; font-family：Calibri; font-size：medium; font-weight：bold; font-style：normal; font-variant: small-caps; text-transform：大写;颜色：＃000000; text-align：left; line-height：50px; margin-removed 10%;\">
<asp:Button ID=\"Button1\" runat=\"server\" Text=\"Submit\" BackColor=\"Black\" BorderColor=\"Black\" BorderStyle=\"Solid\" BorderWidth=\"5px\" Font-Names=\"Calibri\" Font-Size=\"Medium\" ForeColor=\"White\" Height=\"40px\" Width=\"100px\" OnClick=\"Button1_Click\" />
</div>
</div>
</asp:Content>

/; if (!reg.test(objEmail.value)) { alert('Not a valid e-mail Address'); return false; } } </script> </asp:Content> <asp:Content ID="Content2" ContentPlaceHolderID="ContentPlaceHolder1" runat="Server"> <div style="width: 100%; height: 330px; float: left; line-height: normal; text-align: justify;"> <%--1st Row--%> <div style="width: 45%; height: 30px; margin-removed 1%; float: left; font-family: Calibri; font-size: medium; font-weight: bold; font-style: normal; font-variant: small-caps; text-transform: uppercase; color: #000000; text-align: right; line-height: 30px;"> <asp:Label ID="Label2" runat="server" Text="First Name" Font-Names="Calibri" Font-Size="Medium" ForeColor="Black" Width="100%"></asp:Label></div> <div style="width: 45%; height: 30px; margin-removed 1%; float: left; font-family: Calibri; font-size: medium; font-weight: bold; font-style: normal; font-variant: small-caps; color: #000000; text-align: left; line-height: 30px; margin-removed 10%;"> <asp:TextBox ID="TxtBxFirstName" runat="server" Font-Names="Calibri" ForeColor="Black" Font-Size="Medium" BackColor="White" BorderColor="Black" BorderStyle="Solid" BorderWidth="1" onBlur="ValidateFirstName();"></asp:TextBox> <asp:Label ID="Label7" runat="server" Text="First Name on Govt. Issued NIC" Font-Names="Calibri" Font-Size="x-Small" ForeColor="Black"></asp:Label> </div> <%--2nd Row--%> <div style="width: 45%; height: 30px; margin-removed 2%; float: left; font-family: Calibri; font-size: medium; font-weight: bold; font-style: normal; font-variant: small-caps; text-transform: uppercase; color: #000000; text-align: right; line-height: 30px;"> <asp:Label ID="Label1" runat="server" Text="Last Name" Font-Names="Calibri" Font-Size="Medium" ForeColor="Black" Width="100%"></asp:Label></div> <div style="width: 45%; height: 30px; margin-removed 2%; float: left; font-family: Calibri; font-size: medium; font-weight: bold; font-style: normal; font-variant: small-caps; color: #000000; text-align: left; line-height: 30px; margin-removed 10%;"> <asp:TextBox ID="TxtBxLastName" runat="server" Font-Names="Calibri" ForeColor="Black" Font-Size="Medium" BackColor="White" BorderColor="Black" BorderStyle="Solid" BorderWidth="1" onBlur="ValidateLastname();"></asp:TextBox> <asp:Label ID="Label8" runat="server" Text="Last Name on Govt. Issued NIC" Font-Names="Calibri" Font-Size="x-Small" ForeColor="Black"></asp:Label> </div> <%--3rd Row--%> <div style="width: 45%; height: 30px; margin-removed 2%; float: left; font-family: Calibri; font-size: medium; font-weight: bold; font-style: normal; font-variant: small-caps; text-transform: uppercase; color: #000000; text-align: right; line-height: 30px;"> <asp:Label ID="Label3" runat="server" Text="National Identity Card No" Font-Names="Calibri" Font-Size="Medium" ForeColor="Black" Width="100%"></asp:Label></div> <div style="width: 45%; height: 30px; margin-removed 2%; float: left; font-family: Calibri; font-size: medium; font-weight: bold; font-style: normal; font-variant: small-caps; text-transform: uppercase; color: #000000; text-align: left; line-height: 30px; margin-removed 10%;"> <asp:TextBox ID="TxtBxCNIC" runat="server" Font-Names="Calibri" ForeColor="Black" Font-Size="Medium" BackColor="White" BorderColor="Black" BorderStyle="Solid" BorderWidth="1" onBlur="ValidateCNIC();"></asp:TextBox> </div> <%--4th Row--%> <div style="width: 45%; height: 30px; margin-removed 2%; float: left; font-family: Calibri; font-size: medium; font-weight: bold; font-style: normal; font-variant: small-caps; text-transform: uppercase; color: #000000; text-align: right; line-height: 30px;"> <asp:Label ID="Label4" runat="server" Text="User Name" Font-Names="Calibri" Font-Size="Medium" ForeColor="Black" Width="100%"></asp:Label></div> <div style="width: 45%; height: 30px; margin-removed 2%; float: left; font-family: Calibri; font-size: medium; font-weight: bold; font-style: normal; font-variant: small-caps; color: #000000; text-align: left; line-height: 30px; margin-removed 10%;"> <asp:TextBox ID="TxtBxUsername" runat="server" Font-Names="Calibri" ForeColor="Black" Font-Size="Medium" BackColor="White" BorderColor="Black" BorderStyle="Solid" BorderWidth="1" onBlur="ValidateUsername();"></asp:TextBox> <asp:Label ID="Label9" runat="server" Text="Alphabets & Numeric Only" Font-Names="Calibri" Font-Size="x-Small" ForeColor="Black"></asp:Label> </div> <%--5th Row--%> <div style="width: 45%; height: 30px; margin-removed 2%; float: left; font-family: Calibri; font-size: medium; font-weight: bold; font-style: normal; font-variant: small-caps; text-transform: uppercase; color: #000000; text-align: right; line-height: 30px;"> <asp:Label ID="Label5" runat="server" Text="Email" Font-Names="Calibri" Font-Size="Medium" ForeColor="Black" Width="100%"></asp:Label></div> <div style="width: 45%; height: 30px; margin-removed 2%; float: left; font-family: Calibri; font-size: medium; font-weight: bold; font-style: normal; font-variant: small-caps; text-transform: uppercase; color: #000000; text-align: left; line-height: 30px; margin-removed 10%;"> <asp:TextBox ID="TxtBxEmail" runat="server" Font-Names="Calibri" ForeColor="Black" Font-Size="Medium" BackColor="White" BorderColor="Black" BorderStyle="Solid" BorderWidth="1" TextMode="Email" onBlur="ValidateEmail(this);"></asp:TextBox> </div> <%--6th Row--%> <div style="width: 45%; height: 50px; margin-removed 2%; float: left; font-family: Calibri; font-size: medium; font-weight: bold; font-style: normal; font-variant: small-caps; text-transform: uppercase; color: #000000; text-align: right; line-height: 50px;"> <asp:Button ID="BtnClear" runat="server" Text="Clear" BackColor="Black" BorderColor="Black" BorderStyle="Solid" BorderWidth="5px" Font-Names="Calibri" Font-Size="Medium" ForeColor="White" Height="40px" Width="100px" OnClick="BtnClear_Click" /> </div> <div style="width: 45%; height: 50px; margin-removed 2%; float: left; font-family: Calibri; font-size: medium; font-weight: bold; font-style: normal; font-variant: small-caps; text-transform: uppercase; color: #000000; text-align: left; line-height: 50px; margin-removed 10%;"> <asp:Button ID="Button1" runat="server" Text="Submit" BackColor="Black" BorderColor="Black" BorderStyle="Solid" BorderWidth="5px" Font-Names="Calibri" Font-Size="Medium" ForeColor="White" Height="40px" Width="100px" OnClick="Button1_Click" /> </div> </div> </asp:Content>

remove isNaN(value)f you need to validate character limit try as

remove isNaN(value)f you need to validate character limit try as

if (Firstname.length >= 1 && Firstname.length <= 25 ) {

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