Hi,
you can call this function like
function validate() {
var TCode = document.getElementById('TBtext').value;
if (/[^a-zA-Z0-9\-\/]/.test(TCode)) {
alert('Input is not alphanumeric');
return false;
}
return true;
}
HTML Call:
<asp:textbox id="TBtext" runat="server" onblur="validate();" xmlns:asp="#unknown"></asp:textbox>