VALIDASI HURUF DENGAN JAVASCRIP

<html>
<head>
<title> Falidasi angka
</title>
<link rel=stylesheet href="style.css" type="text/css">
</head>
<body>
<script language="JavaScript" type="text/javascript">


function cekuser(a) {
re = /^[A-Za-z]{1,}$/;<!--nama harus berupa huruf,--!>
return re.test(a);
}
function checkForm(b) {
if (!cekuser(b.nama.value)) {
alert("Nama harus berupa HURUF semua......!! ");
b.nama.focus();
return false;
}
alert("selamat bergabung");
return true;
}
</script>

     <form name="form"  method="post" onSubmit="return checkForm(this)">
        
        <table borderColor="#666666" height="29" cellSpacing="0" cellPadding="6" width="285" border="1" align="center">                  
        <td width="426" bgColor="cyan" height="29" align="center">
           
            <table height="1" cellSpacing="0" cellPadding="0" width="336" border="0">
                 <tr>
                     <td class="isi" width="139" height="9" align="left">
                     <b>Nama Anda &nbsp;&nbsp;:</b>
                     </td>
                     <td width="220" height="9" align="left">
                     <input type ="text" name ="nama" size="25" />
                     </td>
                 </tr>
                    
                 <tr>
                     <td vAlign="center" width="335" colSpan="2" height="1" align="justify">
                     <p align="center">
                     </td>
                 </tr>
                 <tr>
                     <td width="335" colSpan="2" height="1" align="justify">
                      <p align="center"><font face="Verdana">
                      <input type="submit" value="SUBMIT" name="Submit">
                      <input type="reset" value="RESET" name="reset" >
                      </font>
                     </td>
                 </tr>
            </table>
        </td>   
        </table> 
                      
    </form>
</body>
</html>

VALIDASI ANGKA DENGAN JAVASCRIP

<html>
    <head>
        <title>Validasi Menggunakan Java Script</title>
      
        <script type="text/javascript">
            function Validasi(){

                var angka = "0123456789";
                var x = 0;
                var kodepos=document.getElementById('kodepos').value;
                if (kodepos==""){
                  alert("form belum terisi");
                  return false;
             }
                if (kodepos.length!=5) {
                    alert("kode pos harus 5 karakter");
                    return false;
                }
                for (var i=0; i < kodepos.length; i++) {
                    digita = "" + kodepos.substring(i, i+1);
                    if (angka.indexOf(digita) == "-1") {
                        window.alert("Karakter pada Kode POs yang dimasukkan salah (harus angka semua)");
                        return false;
                    }
                }
                return true;

            }

        </script>
    </head>
    <body>

        <div id="kotak">

            <div id="form">
                <form method="post" onsubmit="return Validasi();">
                    <table align="center">
                    

                        <tr>
                            <td align="left"><p><b>Kode Pos</b></p></td>
                            <td><p><b>:</b></p></td>
                            <td align="left"><input type="text" id="kodepos"></td>

                        </tr>
                        <tr>
                            <td></td>
                            <td></td>
                            <td><input type="submit" name="submit" value="Kirim"></td>

                        </tr>
                </form>
                </table>

            </div>
        </div>

    </body>

</html>