Simple Piano in HTML CSS JavaScript
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JavaScript AudioSynth
C
D
E
F
G
A
B
Reference
Source Code
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<title>Simple JS Piano</title>
<style>
body { font-family: sans-serif; text-align: center; background: #222; color: white; padding-top: 50px; }
.piano { display: flex; justify-content: center; gap: 5px; }
.key {
width: 60px; height: 200px; background: white; border-radius: 0 0 5px 5px;
cursor: pointer; color: black; display: flex; align-items: flex-end;
justify-content: center; padding-bottom: 20px; font-weight: bold;
transition: background 0.1s; user-select: none;
}
.key:active { background: #ddd; transform: scale(0.98); }
.controls { margin-bottom: 20px; }
button { padding: 10px 20px; cursor: pointer; font-size: 16px; }
</style>
</head>
<body>
<h1>JavaScript AudioSynth</h1>
<div class="controls">
<label>Instrument: </label>
<select id="instrument-select">
<option value="piano">Piano</option>
<option value="organ">Organ</option>
<option value="acoustic">Acoustic Guitar</option>
<option value="edm">EDM</option>
</select>
</div>
<div class="piano">
<div class="key" onclick="playNote('C', 4)">C</div>
<div class="key" onclick="playNote('D', 4)">D</div>
<div class="key" onclick="playNote('E', 4)">E</div>
<div class="key" onclick="playNote('F', 4)">F</div>
<div class="key" onclick="playNote('G', 4)">G</div>
<div class="key" onclick="playNote('A', 4)">A</div>
<div class="key" onclick="playNote('B', 4)">B</div>
</div>
<script src="https://0fajarpurnama0.github.io/assets/js/3rdparty/audiosynth.js"></script>
<script>
// 1. Create the AudioSynth Instance
// AudioSynth is a singleton in this library, accessed via 'Synth'
function playNote(note, octave) {
// Get selected instrument ID from the dropdown
const instrumentId = document.getElementById('instrument-select').value;
// Create the instrument (0=Piano, 1=Organ, 2=Acoustic, 3=EDM)
const instrument = Synth.createInstrument(instrumentId);
// Play the note: Note Name, Octave, Duration (seconds)
instrument.play(note, octave, 2);
}
</script>
</body>
</html>