Complete day1

Author: ChenyunZhang

01 - JavaScript Drum Kit/index-START.html

@@ -59,7 +59,23 @@
   <audio data-key="76" src="sounds/tink.wav"></audio>
 
 <script>
+  function playSound(e) {
+    const audio = document.querySelector(`audio[data-key="${e.keyCode}"]`)
+    const key = document.querySelector(`.key[data-key="${e.keyCode}"]`)
+    if(!audio) return;
+    audio.currentTime = 0;
+    audio.play();
+    key.classList.add('playing');
+  }
 
+  function removeTransition(e){
+    if(e.propertyName != 'transform') return;
+    this.classList.remove('playing');
+  }
+
+  const keys = document.querySelectorAll('.key')
+  keys.forEach(key => key.addEventListener('transitionend', removeTransition))
+  window.addEventListener('keydown', playSound);
 </script>