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Codenya:
<!DOCTYPE html>
<html lang="en">
<head>
<title>Makan</title>
</head>
<body>
<script language="JavaScript" type="text/javascript">
function hitungPesan(){
var nota = document.form2;
var hargaBakso = 12000 * eval(nota.qBakso.value);
var hargaSoto = 10000 * eval(nota.qSoto.value);
var hargaMie = 15000 * eval(nota.qMie.value);
var hargaDegan = 5000 * eval(nota.qDegan.value);
var hargaCampur = 7000 * eval(nota.qCampur.value);
var jumlahTotal = hargaBakso + hargaSoto + hargaMie + hargaDegan + hargaCampur;
if (jumlahTotal > 50000){
nota.Total.value = jumlahTotal;
nota.Diskon.value = 10000;
nota.Bayar.value = jumlahTotal - eval(nota.Diskon.value);
} else {
nota.Total.value = jumlahTotal;
nota.Diskon.value = 0;
nota.Bayar.value = jumlahTotal - eval(nota.Diskon.value);
}
}
function resetForm(){
document.form2.reset();
}
</script>
<h3>Form Pemesanan Berbasis JavaScript</h3>
<form name="form2" action="#">
<table border="1px">
<tr>
<th>No</th>
<th>Makanan/Minuman</th>
<th>Harga</th>
<th>Pesan</th>
</tr>
<tr>
<td width="15px">1</td>
<td width="200px">Bakso Istimewa</td>
<td width="85px" bgcolor="gray">@ <input type="text" name="bakso" value="12000" size="6" disabled="true"/></td>
<td width="150px"><input type="text" name="qBakso" value="0" onChange="hitungPesan()"/></td>
</tr>
<tr>
<td>2</td>
<td>Soto Spesial</td>
<td bgcolor="gray">@ <input type="text" name="soto" value="10000" size="6" disabled="true"/></td>
<td><input type="text" name="qSoto" value="0" onChange="hitungPesan()"/></td>
</tr>
<tr>
<td>3</td>
<td>Mie Ayam Super</td>
<td bgcolor="gray">@ <input type="text" name="mie" value="15000" size="6" disabled="true"/></td>
<td><input type="text" name="qMie" value="0" onChange="hitungPesan()"/></td>
</tr>
<tr>
<td>4</td>
<td>Es Degan</td>
<td bgcolor="gray">@ <input type="text" name="degan" value="5000" size="6" disabled="true"/></td>
<td><input type="text" name="qDegan" value="0" onChange="hitungPesan()"/></td>
</tr>
<tr>
<td>5</td>
<td>Es Campur</td>
<td bgcolor="gray">@ <input type="text" name="campur" value="7000" size="6" disabled="true"/></td>
<td><input type="text" name="qCampur" value="0" onChange="hitungPesan()"/></td>
</tr>
<tr bgcolor="red">
<td colspan="3" align="right">Jumlah Total</td>
<td><input type="text" name="Total" disabled="true" /></td>
</tr>
<tr bgcolor="yellow">
<td colspan="3" align="right">Diskon</td>
<td><input type="text" name="Diskon" disabled="true" /></td>
</tr>
<tr bgcolor="green">
<td colspan="3" align="right">Jumlah Dibayar</td>
<td><input type="text" name="Bayar" disabled="true" align="right"/></td>
</tr>
</table>
<input type="button" value="RESET" onClick="resetForm()" />
</form>
</body>
</html>
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