designlt Page Language34C34 AutoEventWireup34true34 CodeBehind34loginaspxcs34 Inherits34INSERTUPDATEDELETElogin34 gtltDOCTYPE html PUBLIC 34W3CDTD XHTML 10 TransitionalEN34 34httpwwww3orgTRxhtml1DTDxhtml1transitionaldtd34gtlthtml xmlns34httpwwww3org1999xhtml34gtlthead id34Head134 runat34server34gt lttitlegtUntitled Pagelttitlegt ltscript src34validationjs34

Hi smuthuProblem is with ClientID in external js file Because it is a server code You cannot run server code in a separate javascript file Thats why it is not workingChange with the below codefunction isvaliduser if documentgetElementById39TextBox139value 3434 alert34Name cannot be blank34 documentgetElementById39TextBox139focus return false

Javascript function not working with external js file in ASP.Net

smuthu

SOLVED CLOSED ACTIVE ANSWERED
User: smuthu
Posted: on Oct 12, 2016 01:34 AM
Forum: JavaScript
Answer: 1
Views: 13708

design:

<%@ Page Language="C#" AutoEventWireup="true" CodeBehind="login.aspx.cs" Inherits="INSERT_UPDATE_DELETE.login" %>

<!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>Untitled Page</title>
    <script src="../validation.js" type="text/javascript"></script>
</head>
<body>
    <form id="form1" runat="server">
    <div>
        <table align="center">
            <tr>
                <td>
                    USERNAME
                </td>
                <td>
                    <asp:TextBox ID="TextBox1" runat="server" Height="24px" Width="133px"></asp:TextBox>
                </td>
            </tr>
            <tr>
                <td>
                    PASSWORD
                </td>
                <td>
                    <asp:TextBox ID="TextBox2" runat="server" Height="22px" Width="133px"></asp:TextBox>
                </td>
            </tr>
            <tr>
                <td>
                </td>
                <td>
                    <asp:Button ID="btnSave" runat="server" Text="Insert" OnClick="btnSave_Click" OnClientClick="return isvaliduser();" />&nbsp;&nbsp;
                </td>
            </tr>
        </table>
    </div>
    </form>
</body>
</html>

validation.js

function isvaliduser() {
    if (document.getElementById("<%=TextBox1.ClientID%>").value == "") {
        alert("Name cannot be blank"); 
        document.getElementById("<%=TextBox1.ClientID%>").focus();
        return (false);
    }
}

Download FREE API for Word, Excel and PDF in ASP.Net

dharmend...

0 1

Reply
User: dharmendr
Replied: on Oct 12, 2016 01:40 AM
Report

Hi smuthu,

Check the folder structure.

If your page is in a subfolder, then use

<script src="../validation.js" type="text/javascript"/>

else

<script src="validation.js" type="text/javascript"/>

or adjust accordingly.

I agree, here is the link: https://www.e-iceblue.com/Introduce/spire-office-for-net-free.html

Javascript function not working with external js file in ASP.Net

Company

Explore

Follow us

Contact Us