<html>
<head>
<title>javascript</title>
<script>
function tambah(){
var
nilai_a = Number(document.getElementById("a").value);
var
nilai_b = Number(document.getElementById("b").value);
var
nilai_c;
nilai_c
= nilai_a + nilai_b;
document.getElementById("c").value
= nilai_c;
}
function kurang(){
var
nilai_a = Number(document.getElementById("a").value);
var
nilai_b = Number(document.getElementById("b").value);
var
nilai_c;
nilai_d
= nilai_a - nilai_b;
document.getElementById("c").value
= nilai_d;
}
function bagi(){
var
nilai_a = Number(document.getElementById("a").value);
var
nilai_b = Number(document.getElementById("b").value);
var
nilai_c;
nilai_e
= nilai_a / nilai_b;
document.getElementById("c").value
= nilai_e;
}
function kali(){
var
nilai_a = Number(document.getElementById("a").value);
var
nilai_b = Number(document.getElementById("b").value);
var
nilai_c;
nilai_f
= nilai_a * nilai_b;
document.getElementById("c").value
= nilai_f;
}
</script>
</head>
<body>
<h1>Javascript</h1>
<hr>
<div
id="judul">Kalkulator Sederhana</div>
<input type="text"
name="a" id="a" size="2">
<input type="text"
name="b" id="b" size="2">
=
<input type="text"
name="c" id="c" size="2">
<br>
<input
type="button" name="tombol" id="tombol"
value="+" onClick="tambah()"/>
<input
type="button" name="tombol" id="tombol"
value="-" onClick="kurang()"/>
<input
type="button" name="tombol" id="tombol"
value="/" onClick="bagi()"/>
<input
type="button" name="tombol" id="tombol"
value="*" onClick="kali()"/>
</body>
</html>
Hasilnya sebagai berikut:
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