Avoid special characters and space to enter in textbox using Jquery

As before we learned about how  Validate strong password usingRegularExpressionValidator  where we choose characters,numbers,1 upper case letter and special character but suppose someone wants that restrict to special character and space in password validation so that time this code is very helpful .Mainly we need to avoid special characters and space to validate  password and username .


Source Code:-

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

<!DOCTYPE html>

<html xmlns="http://www.w3.org/1999/xhtml">
<head runat="server">
    <script src="http://ajax.googleapis.com/ajax/libs/jquery/1.11.1/jquery.min.js"></script>
            <script type="text/javascript">
                $(document).ready(function () {
                    $('#txtusername').keypress(function (key) {
                        var regexpns = new RegExp("^[a-zA-Z0-9]+$");
                        var key = String.fromCharCode(event.charCode ? event.which : event.charCode);
                        if (!regexpns.test(key)) {
                            event.preventDefault();
                            document.getElementById("lbresult").style.display = 'block';
                            return false;                      
                        }
                        else
                        {
                            document.getElementById("lbresult").style.display = 'none';

                        }
                    });
                });
            </script>
</head>
<body>
    <form id="form1" runat="server">

    <div>
        <fieldset style="width:450px;">
            <legend>Vaildate textbox with special characters and space using Jquery</legend>
            Username: <asp:TextBox ID="txtusername" runat="server"></asp:TextBox>
            <label id="lbresult" style="color: Red; display: none" >Space and Special characters not allowed</label>
        </fieldset>      
    </div>
    </form>
</body>
</html>


 Out-Put:-



Avoid special characters and space to enter in textbox using Jquery Avoid special characters and space to enter in textbox using Jquery Reviewed by NEERAJ SRIVASTAVA on 4:08:00 PM Rating: 5

No comments:

Powered by Blogger.