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    <title>Hanif Abyan Ayyasyi XI RPL 2</title>
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    <h2>JavaScript Variable</h2>
    <p>x, y and z is variable</p>
    <p id="demo"></p>

    <script>
        var x = parseInt( prompt("Masukan angka pertama ! "  ));
        var y = parseInt (prompt("Masukan angka kedua ! " ));
        var z = parseInt (prompt("Masukan angka ketiga ! " ));
        var hasil = x + y + z;
        document.getElementById("demo").innerHTML =
         "hasil dari pertambahan " + x  + " + " + y + " + " + z + " = "  + hasil;
    </script>
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