Add solution for project 12.

Carlos Filoteo · Carlos Filoteo · commit 2dda8579527b · 2017-03-20T10:03:13.000-06:00
diff --git a/12 - Key Sequence Detection/index-START.html b/12 - Key Sequence Detection/index-START.html
@@ -3,10 +3,22 @@
 <head>
   <meta charset="UTF-8">
   <title>Key Detection</title>
-  <script type="text/javascript" src="http://www.cornify.com/js/cornify.js"></script>
+  <!--<script type="text/javascript" src="http://www.cornify.com/js/cornify.js"></script>-->
 </head>
 <body>
 <script>
+  const pressed = []
+  const secretCode = ["ArrowUp", "ArrowUp", "ArrowDown", "ArrowDown", "ArrowLeft", "ArrowRight", "ArrowLeft", "ArrowRight", "b", "a"]
+  window.addEventListener('keyup', ($e) => {
+    while(pressed.length >= secretCode.length) {
+      pressed.shift()
+    }
+    pressed.push($e.key)
+    if(pressed === secretCode) {
+      alert('winner!')
+      pressed.length = 0
+    }
+  })
 </script>
 </body>
 </html>
