Analisa Script
<p><script language="JavaScript">
function jumlah()
{
var bil1 = parseFloat(document.fform.bilangan1.value);
if (isNaN (bil1))
bil1=0.0;
var bil2 = parseFloat(document.fform.bilangan2.value);
if (isNaN (bil2))
bil2=0.0;
var hasil = bil1 + bil2;
alert ("Hasil Penjumlahan = " + hasil);
}
</script></p>
<Form Name="fform">
<h1><br>Memasukan Data Lewat Keyboard</h1>
<pre>
bilangan pertama :<input type="text" size="11" name="bilangan1">
bilangan kedua : <input type="text" size="11" name="bilangan2">
</pre>
<p>
<INPUT TYPE="button" value="Jumlahkan" onclick="jumlah()">
<INPUT TYPE="reset" value="Ulang">
</form>
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