18th exercise done

samdec11 · samdec11 · commit 91d7c9ea8551 · 2017-01-16T16:20:57.000-05:00
diff --git a/18 - Adding Up Times with Reduce/index-START.html b/18 - Adding Up Times with Reduce/index-START.html
@@ -182,6 +182,23 @@
     </li>
 
 <script>
+  const timeNodes = Array.from(document.querySelectorAll('[data-time]'));
+  const seconds = timeNodes
+    .map(node => node.dataset.time)
+    .map(timeCode => {
+      const [mins, secs] = timeCode.split(':').map(parseFloat);
+      return (mins * 60) + secs;
+    })
+    .reduce((total, vidSeconds) => total + vidSeconds);
+
+  let secondsLeft = seconds;
+  const hours = Math.floor(secondsLeft / 3600);
+  secondsLeft = secondsLeft % 3600;
+
+  const mins = Math.floor(secondsLeft / 60);
+  secondsLeft = secondsLeft % 60;
+
+  console.log(hours, mins, secondsLeft);
 </script>
 </body>
 </html>
