Treehouse JavaScript TODO

app.js

//element vars
var taskInput = document.getElementById("new-task"); //new-task
var addButton = document.getElementsByTagName("button")[0]; //first button
var incompleteTasksHolder = document.getElementById("incomplete-tasks"); //incomplete-tasks
var completedTasksHolder= document.getElementById("completed-tasks"); //completed-tasks

var createNewTaskElement = function(taskString) {
  var listItem = document.createElement("li");
  var checkBox = document.createElement("input");
  var label = document.createElement("label");
  var editInput = document.createElement("input"); // text
  var editButton = document.createElement("button");
  var deleteButton = document.createElement("button");

  listItem.appendChild(checkBox);
  listItem.appendChild(label);
  listItem.appendChild(editInput);
  listItem.appendChild(editButton);
  listItem.appendChild(deleteButton);

  checkBox.type = "checkbox";
  editInput.type = "text";
  editButton.className = "edit";
  editButton.innerText = "Edit";
  deleteButton.className = "delete";
  deleteButton.innerText = "Delete";
  label.innerText = taskString;

  return listItem;
}

var createTask = function() {
  console.log('Adding..........');
  var listItem = createNewTaskElement(taskInput.value);
  if (taskInput.value != "") {
    incompleteTasksHolder.appendChild(listItem);
    bindTaskEvents(listItem, taskComplete);
    taskInput.value = "";
  } else {
    taskInput.placeholder = "Enter your task here.";
  }
}
var editTask = function() {
  console.log('Editing.........');
  var listItem = this.parentNode;
  var editInput = listItem.querySelector("input[type=text]");
  var label = listItem.querySelector("label");
  var editButton = listItem.querySelector("button.edit");
  var containsClass = listItem.classList.contains("editMode");

  if (containsClass) {
    label.innerText = editInput.value;
    editButton.innerText = "Edit";
  } else {
    editInput.value = label.innerText;
    editButton.innerText = "Save";
  }

  listItem.classList.toggle("editMode");
}
var deleteTask = function() {
  console.log('Deleting........');
  var listItem = this.parentNode;
  var ul = listItem.parentNode;
  ul.removeChild(listItem);
}
var taskComplete = function() {
  console.log('Complete........');
  var listItem = this.parentNode;
  completedTasksHolder.appendChild(listItem);
  bindTaskEvents(listItem, taskIncomplete);

}
var taskIncomplete = function() {
  console.log('Incomplete......');
  var listItem = this.parentNode;
  incompleteTasksHolder.appendChild(listItem);
  bindTaskEvents(listItem, taskComplete);
;}

var bindTaskEvents = function(taskListItem, checkBoxEventHandler) {
  console.log('bindTaskEventcalled');

  var checkBox = taskListItem.querySelector("input[type=checkbox]");
  var editButton = taskListItem.querySelector("button.edit");
  var deleteButton = taskListItem.querySelector("button.delete");

  editButton.onclick = editTask;
  deleteButton.onclick = deleteTask;
  checkBox.onchange = checkBoxEventHandler;
}

//cycle over incompleteTasksHolder ul list items
for(var i = 0; i < incompleteTasksHolder.children.length; i++) {
  //bind events to list item's children (taskCompleted)
  bindTaskEvents(incompleteTasksHolder.children[i], taskComplete);
}

//cycle over completedTasksHolder ul list items
for(var i = 0; i < completedTasksHolder.children.length; i++) {
  //bind events to list item's children (taskIncomplete)
  bindTaskEvents(completedTasksHolder.children[i], taskIncomplete);
}


addButton.addEventListener("click", createTask);

gistfile1.txt

/* Basic Style */
body {
  background: #fff;
  color: #333;
  font-family: Lato, sans-serif;
}
.container {
  display: block;
  width: 400px;
  margin: 100px auto 0;
}
ul {
  margin: 0;
  padding: 0;
}
li * {
  float: left;
}
li, h3 {
  clear:both;
  list-style:none;
}
input, button {
  outline: none;
}
button {
  background: none;
  border: 0px;
  color: #888;
  font-size: 15px;
  width: 60px;
  margin: 10px 0 0;
  font-family: Lato, sans-serif;
  cursor: pointer;
}
button:hover {
  color: #333;
}
/* Heading */
h3,
label[for='new-task'] {
  color: #333;
  font-weight: 700;
  font-size: 15px;
  border-bottom: 2px solid #333;
  padding: 30px 0 10px;
  margin: 0;
  text-transform: uppercase;
}
input[type="text"] {
  margin: 0;
  font-size: 18px;
  line-height: 18px;
  height: 18px;
  padding: 10px;
  border: 1px solid #ddd;
  background: #fff;
  border-radius: 6px;
  font-family: Lato, sans-serif;
  color: #888;
}
input[type="text"]:focus {
  color: #333;
}

/* New Task */
label[for='new-task'] {
  display: block;
  margin: 0 0 20px;
}
input#new-task {
  float: left;
  width: 318px;
}
p > button:hover {
  color: #0FC57C;
}

/* Task list */
li {
  overflow: hidden;
  padding: 20px 0;
  border-bottom: 1px solid #eee;
}
li > input[type="checkbox"] {
  margin: 0 10px;
  position: relative;
  top: 15px;
}
li > label {
  font-size: 18px;
  line-height: 40px;
  width: 237px;
  padding: 0 0 0 11px;
}
li >  input[type="text"] {
  width: 226px;
}
li > .delete:hover {
  color: #CF2323;
}

/* Completed */
#completed-tasks label {
  text-decoration: line-through;
  color: #888;
}

/* Edit Task */
ul li input[type=text] {
  display:none;
}

ul li.editMode input[type=text] {
  display:block;
}

ul li.editMode label {
  display:none;
}

index.html

<!DOCTYPE html>
<html>
  <head>
    <title>Todo App</title>
    <link href='http://fonts.googleapis.com/css?family=Lato:300,400,700' rel='stylesheet' type='text/css'>
    <link rel="stylesheet" href="css/style.css" type="text/css" media="screen" charset="utf-8">
  </head>
  <body>
    <div class="container">
      <p>
        <label for="new-task">Add Item</label><input id="new-task" type="text"><button>Add</button>
      </p>

      <h3>Todo</h3>
      <ul id="incomplete-tasks">

      </ul>

      <h3>Completed</h3>
      <ul id="completed-tasks">

      </ul>
    </div>

    <script type="text/javascript" src="js/app.js"></script>

  </body>
</html>