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Editorial Team
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Asked: 2026-05-29T09:04:49+00:00

<asp:TextBox ID=CommentBox runat=server TextMode=multiLine CssClass=commentTbx onKeyDown=limitText(this,200); onKeyUp=limitText(this,200);valid(this);></asp:TextBox>&nbsp; function valid(f) { !(/^[A-zÑñ0-9-\s]*$/i).test(f.value)?f.value = f.value.replace(/[^A-zÑñ0-9-\s]/ig,”):null; }

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<asp:TextBox ID="CommentBox" runat="server" TextMode="multiLine" CssClass="commentTbx" onKeyDown="limitText(this,200);" onKeyUp="limitText(this,200);valid(this);"></asp:TextBox>&nbsp;

 function valid(f) {
!(/^[A-zÑñ0-9-\s]*$/i).test(f.value)?f.value = f.value.replace(/[^A-zÑñ0-9-\s]/ig,''):null;
}

Hi above is my javascript function, but i want to allow commas, space and fullstop ONLY! How is it possible?

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1 Answer

  1. Editorial Team
    <script language="javascript" type="text/javascript">
function check(e) {
var keynum
var keychar
var numcheck
// For Internet Explorer
if (window.event)
{
keynum = e.keyCode
}
// For Netscape/Firefox/Opera
else if (e.which)
{
keynum = e.which
}
keychar = String.fromCharCode(keynum)
//List of special characters you want to restrict
if (keychar == "'" || keychar == "`")
{

return false;
}
else {
return true;
}
}
</script>

<asp:TextBox ID="txtName" runat="server" onkeypress="return check(event)" ></asp:TextBox>

    hope this helps

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