Empty TextBox validation using JavaScript and jQuery in ASP.Net

pratiksh...

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User: pratikshir
Posted: on Jun 09, 2017 08:46 AM
Forum: JavaScript
Answer: 3
Views: 15665
Sample Code: Download

Dear Team,

how to set blank and input validation in asp.net 4.0 using javascript

on change event, clickevent or which bet for client and server side

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

dharmend...

0 1

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ANSWER
User: dharmendr
Replied: on Jun 09, 2017 09:03 AM
Modified: on Jun 09, 2017 09:05 AM
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Hi pratikshir,

Refer the below sample.

Using JavaScript

<html xmlns="http://www.w3.org/1999/xhtml">
<head runat="server">
    <title></title>
    <script type="text/javascript">
        function BlankCheck(ele) {
            if (document.getElementById(ele.id).value == '') {
                alert('Name can\'t be blank');
            }
        }
    </script>
</head>
<body>
    <form id="form1" runat="server">
    <div>
        <input name="txtName" type="text" id="txtName" onkeyup="BlankCheck(this);" />
    </div>
    </form>
</body>
</html>

Demo

Using jQuery

<html xmlns="http://www.w3.org/1999/xhtml">
<head runat="server">
    <title></title>
    <script type="text/javascript" src="https://ajax.googleapis.com/ajax/libs/jquery/1.8.3/jquery.min.js"></script>
    <script type="text/javascript">
        $(function () {
            $('#txtName').on('keyup', function () {
                if ($(this).val() == '') {
                    alert('Name can\'t be blank');
                }
            });
        });
    </script>
</head>
<body>
    <form id="form1" runat="server">
    <div>
        <input name="txtName" type="text" id="txtName" />
    </div>
    </form>
</body>
</html>

Demo

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

Empty TextBox validation using JavaScript and jQuery in ASP.Net

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