Complete JS excercises

todo_list.js

@@ -1,10 +1,79 @@
 var newTodoList = function() {
-	// ???
+  this.tasks = []
 };
 
+newTodoList.prototype.add = function(task){
+  var new_task = new Task(task)
+  this.tasks.push(new_task);
+  var index = this.tasks.indexOf(new_task);
+  new_task.id = index + 1;
+};
+
+newTodoList.prototype.list = function(){
+  for(var i = 0; i < this.tasks.length; i++){
+    console.log(this.tasks[i]);
+  }
+}
+
+newTodoList.prototype.remove = function(task){
+  var id = task.id - 1;
+  this.tasks.splice(id, 1);
+}
+
+
+var Task = function(description){
+  this.id = NaN;
+  this.description = description;
+  this.completed = false;
+};
+
+Task.prototype.complete = function(){
+  this.completed = true;
+};
+
+
+
+
+var todoList = newTodoList();
+
+// Note we are using a JavaScript constructor now.
+var groceryList = new newTodoList();
+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}
 
 
-// Driver code
+// This should remove the task from the todo list
+groceryList.remove(breadTask);
 
 
-var todoList = newTodoList();
+groceryList.list();
+//> Task {id: 2, description: 'cheese', completed: false}
+//> Task {id: 3, description: 'milk', completed: false}