diff --git a/todo_list.js b/todo_list.js
index 110fce6..e87110b 100644
--- a/todo_list.js
+++ b/todo_list.js
@@ -1,10 +1,80 @@
-var newTodoList = function() {
-	// ???
+var TodoList = function() {
+  this.tasks = [];
 };
 
+TodoList.prototype.add = function(description){
+  this.tasks.push(new Task(description))
 
+};
+
+var task_id = 1
+var Task = function(description){
+  this.description = description;
+  this.completed = false;
+  this.id = task_id
+  task_id += 1
+};
+
+TodoList.prototype.list = function(){
+  for (var i = 0; i < this.tasks.length; i++){
+    console.log(this.tasks[i]);
+  }
+};
+
+Task.prototype.complete = function(){
+  this.completed = true;
+};
+
+TodoList.prototype.complete_item = function(item_index){
+  this.tasks[item_index].complete();
+};
+
+TodoList.prototype.remove = function(task_object){
+  this.tasks.splice(this.tasks.indexOf(task_object),1)
+}
 
 // Driver code
+//////////////////////////////////////////////////////////////////////////
+// Note we are using a JavaScript constructor now.
+var groceryList = new TodoList();
+groceryList.add('bread');
+groceryList.add('cheese');
+groceryList.add('milk');
+
+// tasks is now an array of Task objects
+groceryList.tasks //-> [Task, Task, Task]
+
+groceryList.list();
+//> Task {id: 1, description: 'bread', completed: false}
+//> Task {id: 2, description: 'cheese', completed: false}
+//> Task {id: 3, description: 'milk', completed: false}
+
+// getting a task object
+var breadTask = groceryList.tasks[0];
+
+breadTask.id //-> 1 (some unique numerical ID)
+breadTask.description //-> 'bread'
+breadTask.completed //-> false
+
+
+// This should complete the task
+breadTask.complete();
+
+breadTask.completed //-> true
+
+groceryList.list();
+//> Task {id: 1, description: 'bread', completed: true}
+//> Task {id: 2, description: 'cheese', completed: false}
+//> Task {id: 3, description: 'milk', completed: false}
+
+groceryList.complete_item(1)
 
+// This should remove the task from the todo list
+console.log("@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@")
+groceryList.list();
+groceryList.remove(breadTask);
+console.log("@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@")
 
-var todoList = newTodoList();
\ No newline at end of file
+groceryList.list();
+//> Task {id: 2, description: 'cheese', completed: false}
+//> Task {id: 3, description: 'milk', completed: false}