studi kasus kalkulator modul 5

1. javascript

function itung(){
var operasi = document.kalkulator;
var bil1 = parseInt(operasi.bil1.value);
var bil2 = parseInt(operasi.bil2.value);
var ope = operasi.ope.value;
var hasil;
if(ope == "tambah"){
hasil = bil1 + bil2;}
else if(ope == "kurang"){
hasil = bil1 - bil2;}
else if(ope == "kali"){
hasil = bil1 * bil2;}
else{
hasil = bil1 / bil2;}
operasi.hasil.value = hasil;
}

2. script html

< !DOCTYPE html >
< html lang="en" >
< head >
< title > Tugas Buat Kalkulator < /title >
< script language="JavaScript" type="text/javascript" src="itungan.js" > < /script >
< /head >
< body bgcolor="brown" >
< h3 > < font color="Yellow" > Kalkulator Sederhana < /font > < /h3 >
< form name="kalkulator" action="#" >
< input type="text" size="5" name="bil1" >
< select name="ope" >
< option value="tambah" > + < /option >
< option value="kurang" > - < /option >
< option value="kali" > * < /option >
< option value="bagi" > / < /option >
< /select >
< input type="text" size="5" name="bil2" >
< input type="button" value="=" onclick="itung()"/ >
< input type="text" size="10" name="hasil" readonly >
< /form >
< /body >
< /html >

3. printscreen