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Dram Kit

data-key

div 속성중 data-key 는 어떤 키를 눌러서 실행 시킬수 있는지 설정하는 것이다. http://keycode.info/ 에서 각 키의 키코드를 알 수 있다.
SCRIPT
HTML
CSS
function palySound(e){
// console.log(e.keyCode); 누른 key: "a" keyCode를 볼수 있음
const audio = document.querySelector(`audio[data-key="${e.keyCode}"]`);
const key = document.querySelector(`.key[data-key="${e.keyCode}"]`);
if(!audio) return; // 위에 있는 data-key가 아니더라도 null이 뜨지 않고 실행시켜주게함
audio.currentTime = 0; //새롭게 시작 할 수 있게함
audio.play();
key.classList.add('playing');
}
function removeTransition(e){
if(e.propertyName !=='transform') return; // transfrom 이아닌것은 실행되지 않게 해줌
this.classList.remove('playing') // 누르고 playing 에 설정한만큼 애니메이션이 된 후에 사라지게 해주는
}
const keys = document.querySelectorAll('.key');
keys.forEach(key => key.addEventListener('transitionend', removeTransition));
window.addEventListener('keydown',palySound);
<div class="keys">
<div data-key="65" class="key">
<kbd>A</kbd>
<span class="sound">clap</span>
</div>
<div data-key="83" class="key">
<kbd>S</kbd>
<span class="sound">hihat</span>
</div>
<div data-key="68" class="key">
<kbd>D</kbd>
<span class="sound">kick</span>
</div>
<div data-key="70" class="key">
<kbd>F</kbd>
<span class="sound">openhat</span>
</div>
<div data-key="71" class="key">
<kbd>G</kbd>
<span class="sound">boom</span>
</div>
<div data-key="72" class="key">
<kbd>H</kbd>
<span class="sound">ride</span>
</div>
<div data-key="74" class="key">
<kbd>J</kbd>
<span class="sound">snare</span>
</div>
<div data-key="75" class="key">
<kbd>K</kbd>
<span class="sound">tom</span>
</div>
<div data-key="76" class="key">
<kbd>L</kbd>
<span class="sound">tink</span>
</div>
</div>
<audio data-key="65" src="sounds/clap.wav"></audio>
<audio data-key="83" src="sounds/hihat.wav"></audio>
<audio data-key="68" src="sounds/kick.wav"></audio>
<audio data-key="70" src="sounds/openhat.wav"></audio>
<audio data-key="71" src="sounds/boom.wav"></audio>
<audio data-key="72" src="sounds/ride.wav"></audio>
<audio data-key="74" src="sounds/snare.wav"></audio>
<audio data-key="75" src="sounds/tom.wav"></audio>
<audio data-key="76" src="sounds/tink.wav"></audio>
html {
font-size: 10px;
background: url('./background.jpg') bottom center;
background-size: cover;
}
body,html {
margin: 0;
padding: 0;
font-family: sans-serif;
}
.keys {
display: flex;
flex: 1;
min-height: 100vh;
align-items: center;
justify-content: center;
}
.key {
border: .4rem solid black;
border-radius: .5rem;
margin: 1rem;
font-size: 1.5rem;
padding: 1rem .5rem;
transition: all .07s ease;
width: 10rem;
text-align: center;
color: white;
background: rgba(0,0,0,0.4);
text-shadow: 0 0 .5rem black;
}
.playing {
transform: scale(1.1);
border-color: #ffc600;
box-shadow: 0 0 1rem #ffc600;
}
kbd {
display: block;
font-size: 4rem;
}
.sound {
font-size: 1.2rem;
text-transform: uppercase;
letter-spacing: .1rem;
color: #ffc600;
}