Completed drum exercise.

kccrs · kccrs · commit 082eb1bb084d · 2017-03-12T20:33:12.000-06:00
diff --git a/01 - JavaScript Drum Kit/index-START.html b/01 - JavaScript Drum Kit/index-START.html
@@ -59,6 +59,28 @@
 
 <script>
 
+  const playSound = (e) => {
+    const audio = document.querySelector(`audio[data-key="${e.keyCode}"]`);
+    const key = document.querySelector(`.key[data-key="${e.keyCode}"]`);
+
+    if (!audio) return; // stop the function from running if that key has no audio
+    audio.currentTime = 0; // rewind to the start of the audio
+    audio.play();
+    key.classList.add('playing');
+  }
+
+  function removeTransition(e) {
+    if (e.propertyName !== 'transform') return; // skip it if it's not a transform
+    // console.log(this); // nice cheater way to figure out what 'this' is
+    this.classList.remove('playing');
+  }
+
+  const keys = document.querySelectorAll('.key');
+
+  keys.forEach(key => key.addEventListener('transitionend', removeTransition));
+
+  window.addEventListener('keydown', playSound);
+
 </script>
 
 
