MEMBUAT APLIKASI KALKULATOR SEDERHANA MENGGUNAKAN JAVASCRIPT
JAVASCRIPT
function hitung(){
var myForm = document.form1;
var a=eval(myForm.a.value);
var b=eval(myForm.b.value);
var pil= myForm.opt.value;
if (pil == "tambah") {
var c = a + b;
}else if (pil == "kurang") {
var c = a - b;
} else if (pil == "kali") {
var c = a * b;
} else if (pil == "bagi") {
var c = a / b;
}
myForm.hasil.value = c;
}
function resetForm(){
document.form1.reset();
}
HTML
<!DOCTYPE html>
<html lang="en">
<head>
<title>Studi Kasus</title>
<script type="text/javascript" src="math.js"></script>
</head>
<body>
<form name="form1" action="#">
<input type="text" name="a"/>
<select name="opt">
<option value="tambah">+</option>
<option value="kurang">-</option>
<option value="kali">*</option>
<option value="bagi">/</option>
</select>
<input type="text" name="b"/>
<input type="button" value="=" onClick="hitung()"/>
<input type="text" name="hasil" disabled="true"/><br/>
<input type="button" value="clear" onClick="resetForm()"/>
</form>
</body>
</html>
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