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

 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);

HTML

 <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>

CSS

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;
}