wesbos · wcski · Oct 3, 2017 · Oct 4, 2017 · Oct 6, 2017 · Oct 6, 2017
diff --git a/01 - JavaScript Drum Kit/index-FINISHED.html b/01 - JavaScript Drum Kit/index-FINISHED.html
diff --git a/01 - JavaScript Drum Kit/index-START.html b/01 - JavaScript Drum Kit/index-START.html
@@ -58,7 +58,24 @@
   <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>
 
 

diff --git a/02 - JS and CSS Clock/index-FINISHED.html b/02 - JS and CSS Clock/index-FINISHED.html
diff --git a/02 - JS and CSS Clock/index-START.html b/02 - JS and CSS Clock/index-START.html
@@ -62,12 +62,41 @@
       background:black;
       position: absolute;
       top:50%;
+      transform-origin: 100%;
+      transform: rotate(90deg);
+      transition: all 0.5s;
     }
 
-  </style>
+    .hour-hand {
+      background: red;
+    }
 
+  </style>
+
   <script>
 
+  const secondHand  = document.querySelector('.second-hand');
+  const minuteHand = document.querySelector('.min-hand');
+  const hourHand = document.querySelector('hour-hand');
+
+  function setDate() {
+    const now = new Date();
+
+    const seconds = now.getSeconds();
+    const secondsDegrees = ((seconds / 60) * 360) + 90;
+    secondHand.style.transform = `rotate(${secondsDegrees}deg)`;
+
+    const minutes = now.getMinutes();
+    const minutesDegrees = ((minutes / 60) * 360) + 90;
+    minuteHand.style.transform = `rotate(${minutesDegrees}deg)`;
+
+    const hours = now.getHours();
+    const hoursDegrees = ((hours / 12) * 360) + 90;
+    hourHand.style.transform = `rotate(${hoursDegrees}deg`;
+
+  }
+
+  setInterval(setDate, 1000);
 
   </script>
 </body>

diff --git a/03 - CSS Variables/index-FINISHED.html b/03 - CSS Variables/index-FINISHED.html
diff --git a/03 - CSS Variables/index-START.html b/03 - CSS Variables/index-START.html
@@ -22,6 +22,21 @@ <h2>Update CSS Variables with <span class='hl'>JS</span></h2>
 
   <style>
 
+    :root {
+      --base: #ffc600;
+      --spacing: 10px;
+      --blur: 10px;
+    }
+
+    img {
+      padding: var(--spacing);
+      background: var(--base);
+      filter: blur(var(--blur));
+    }
+
+    .hl {
+      color: var(--base);
+    }
     /*
       misc styles, nothing to do with CSS variables
     */
@@ -45,6 +60,17 @@ <h2>Update CSS Variables with <span class='hl'>JS</span></h2>
   </style>
 
   <script>
+
+    const inputs = document.querySelectorAll('.controls input');
+
+    function handleUpdate() {
+      const suffix = this.dataset.sizing || '';
+      document.documentElement.style.setProperty(`--${this.name}`, this.value + suffix);
+    }
+
+    inputs.forEach(input => input.addEventListener('change', handleUpdate));
+    inputs.forEach(input => input.addEventListener('mousemove', handleUpdate));
+
   </script>
 
 </body>