restructure solution

app.js

@@ -1,35 +1,44 @@
-var changeGreetingAndAddGif = function(){
+window.onload = function() {
+
+  // change greeting
   var greeting_div = document.getElementById("greeting");
   greeting_div.innerHTML = "Hello, World!";
-  var img = document.createElement('img');
-  img.src = "http://49.media.tumblr.com/tumblr_m6qt1rjPSz1rxjzkho1_500.gif";
-  greeting_div.appendChild(img);
-};
 
-var styleListElements = function(){
+  // set background on lis and add event listener
-  var list_items = document.querySelectorAll("div#essentials > ul > li");
+  var list_items = document.querySelectorAll("li");
   for (var i = list_items.length - 1; i >= 0; i--) {
     list_items[i].style.backgroundColor = "yellow";
     list_items[i].addEventListener("click", selectItem);
   }
-};
 
-var selectItem = function(event){
+  // create and add image
-  var list_items = document.querySelectorAll("div#essentials > ul > li");
+  var img = document.createElement('img');
-  for (var i = list_items.length - 1; i >= 0; i--) {
+  img.src = "http://49.media.tumblr.com/tumblr_m6qt1rjPSz1rxjzkho1_500.gif";
-    list_items[i].classList.remove("selected");
+  greeting_div.appendChild(img);
-  }
+
-  this.classList.add("selected");
+  // add more event listeners
-  document.querySelectorAll("img")[1].setAttribute("src","./images/" + this.innerHTML + ".jpeg");
+  document.querySelector("#reset").addEventListener("click",resetButtonHandler);
+  document.querySelector("#ghosting").addEventListener("mouseover", function() { this.remove(); });
+  document.querySelector("#resize").addEventListener("mouseenter", doubleWidth);
+  document.querySelector("#resize").addEventListener("mouseleave", resetWidth);
+  document.querySelector("body").addEventListener("keyup", noDigits);
+
+  // BONUS
+  document.querySelector("body").addEventListener("keyup", konamiCheck);
 };
 
-var resetButtonHandler = function() {
+function selectItem() {
-  var list_items = document.querySelectorAll("li");
+  var curSelected = document.querySelector(".selected");
-  for (var i = list_items.length - 1; i >= 0; i--) {
+  if (curSelected) { curSelected.className = ""; }
-    list_items[i].className = "";
+  this.className = "selected";
-  }
+  document.querySelectorAll("img")[1].src = "./images/" + this.innerHTML + ".jpeg";
+}
+
+function resetButtonHandler() {
+  var curSelected = document.querySelector(".selected");
+  if (curSelected) { curSelected.className = ""; }
   document.querySelectorAll("img")[1].setAttribute("src","./images/panic.jpeg");
-};
+}
 
 var doubleWidth = function() {
   this.style.width = '400px';
@@ -45,6 +54,8 @@ var noDigits = function(e) {
   }
 };
 
+// BONUS
+
 var idx = 0;
 
 var konamiCheck = function(e) {
@@ -53,21 +64,9 @@ var konamiCheck = function(e) {
     idx++;
     if (idx === konamiCodeKeyCodes.length) {
       alert("YOU ARE AN EVENT HANDLER GURUUUUUUUUU!");
+      idx = 0;
     }
   } else {
     idx = 0;
   }
-};
+};
-
-var initialize = function(){
-  changeGreetingAndAddGif();
-  styleListElements();
-  document.querySelector("#reset").addEventListener("click",resetButtonHandler);
-  document.querySelector("#ghosting").addEventListener("mouseover", function() { this.remove(); });
-  document.querySelector("#resize").addEventListener("mouseenter", doubleWidth);
-  document.querySelector("#resize").addEventListener("mouseleave", resetWidth);
-  document.querySelector("body").addEventListener("keyup", noDigits);
-  document.querySelector("body").addEventListener("keyup", konamiCheck);
-};
-
-window.onload=initialize;