Removing an Special Characters in the Textbox using JavaScript.

Sometime we might come into a situation to remove the specials characters in the textbox while users feed the
input.Below JavaScript code will help us to remove those special characters from textbox.

<script language = "javascript" type = "text/javascript">
        function RemoveSpecialChar(txtVal) 
        {
            if (txtVal.value != '' && txtVal.value.match(/^[\w ]+$/) == null) 
            {
                txtVal.value = txtVal.value.replace(/[\W]/g, '');
            }
        }
    </script>
<asp:TextBox ID = "txtName" onkeyup = "javascript:RemoveSpecialChar(this)" runat = "server">