CodeYourFuture · miriamjorna · Apr 19, 2026
diff --git a/Sprint-3/todo-list/index.html b/Sprint-3/todo-list/index.html
@@ -1,40 +1,52 @@
-<!DOCTYPE html>
+<!doctype html>
 <html lang="en">
-<head>
-  <meta charset="UTF-8" />
-  <meta name="viewport" content="width=device-width, initial-scale=1.0"/>
-  <title>ToDo List</title>
-  <link rel="stylesheet" href="style.css" />
-  <link href="https://cdnjs.cloudflare.com/ajax/libs/font-awesome/6.4.0/css/all.min.css" rel="stylesheet">
+  <head>
+    <meta charset="UTF-8" />
+    <meta name="viewport" content="width=device-width, initial-scale=1.0" />
+    <title>ToDo List</title>
+    <link rel="stylesheet" href="style.css" />
+    <link
+      href="https://cdnjs.cloudflare.com/ajax/libs/font-awesome/6.4.0/css/all.min.css"
+      rel="stylesheet"
+    />
 
-  <script type="module" src="script.mjs"></script>
-</head>
-<body>
-  <div class="todo-container">
-    <h1>My ToDo List</h1>
+    <script type="module" src="script.mjs"></script>
+  </head>
+  <body>
+    <div class="todo-container">
+      <h1>My ToDo List</h1>
 
-    <div class="todo-input">
-      <input type="text" id="new-task-input" placeholder="Enter a new task..." />
-      <button id="add-task-btn">Add</button>
-    </div>
+      <div class="todo-input">
+        <input
+          type="text"
+          id="new-task-input"
+          placeholder="Enter a new task..."
+        />
+        <button id="add-task-btn">Add</button>
+      </div>
 
-    <ul id="todo-list" class="todo-list">      
-    </ul>
+      <ul id="todo-list" class="todo-list">
+        <button id="delete-completed-btn">Delete completed tasks</button>
+      </ul>
 
-    <!-- 
+      <!-- 
       This is a template for the To-do list item. 
       It can simplify the creation of list item node in JS script.
     -->
-    <template id="todo-item-template">
-      <li class="todo-item"> <!-- include class "completed" if the task completed state is true -->
-        <span class="description">Task description</span>
-        <div class="actions">
-          <button class="complete-btn"><span class="fa-solid fa-check" aria-hidden="true"></span></button>
-          <button class="delete-btn"><span class="fa-solid fa-trash" aria-hidden="true"></span></button>
-        </div>
-      </li>
-    </template>
-
-  </div>
-</body>
+      <template id="todo-item-template">
+        <li class="todo-item">
+          <!-- include class "completed" if the task completed state is true -->
+          <span class="description">Task description</span>
+          <div class="actions">
+            <button class="complete-btn">
+              <span class="fa-solid fa-check" aria-hidden="true"></span>
+            </button>
+            <button class="delete-btn">
+              <span class="fa-solid fa-trash" aria-hidden="true"></span>
+            </button>
+          </div>
+        </li>
+      </template>
+    </div>
+  </body>
 </html>
diff --git a/Sprint-3/todo-list/script.mjs b/Sprint-3/todo-list/script.mjs
@@ -1,4 +1,4 @@
-// Store everything imported from './todos.mjs' module as properties of an object named Todos 
+// Store everything imported from './todos.mjs' module as properties of an object named Todos
 import * as Todos from "./todos.mjs";
 
 // To store the todo tasks
@@ -9,14 +9,20 @@ window.addEventListener("load", () => {
   document.getElementById("add-task-btn").addEventListener("click", addNewTodo);
 
   // Populate sample data
-  Todos.addTask(todos, "Wash the dishes", false); 
+  Todos.addTask(todos, "Wash the dishes", false);
   Todos.addTask(todos, "Do the shopping", true);
 
+  document
+    .getElementById("delete-completed-btn")
+    .addEventListener("click", () => {
+      Todos.deleteCompleted(todos);
+      render();
+    });
+
   render();
 });
 
-
-// A callback that reads the task description from an input field and 
+// A callback that reads the task description from an input field and
 // append a new task to the todo list.
 function addNewTodo() {
   const taskInput = document.getElementById("new-task-input");
@@ -45,12 +51,11 @@ function render() {
   });
 }
 
-
 // Note:
 // - First child of #todo-item-template is a <li> element.
 //   We will create each ToDo list item as a clone of this node.
 // - This variable is declared here to be close to the only function that uses it.
-const todoListItemTemplate = 
+const todoListItemTemplate =
   document.getElementById("todo-item-template").content.firstElementChild;
 
 // Create a <li> element for the given todo task
@@ -62,15 +67,15 @@ function createListItem(todo, index) {
     li.classList.add("completed");
   }
 
-  li.querySelector('.complete-btn').addEventListener("click", () => {
+  li.querySelector(".complete-btn").addEventListener("click", () => {
     Todos.toggleCompletedOnTask(todos, index);
     render();
   });
-    
-  li.querySelector('.delete-btn').addEventListener("click", () => {
+
+  li.querySelector(".delete-btn").addEventListener("click", () => {
     Todos.deleteTask(todos, index);
     render();
   });
 
   return li;
-}
+}
diff --git a/Sprint-3/todo-list/todos.mjs b/Sprint-3/todo-list/todos.mjs
@@ -26,4 +26,10 @@ export function toggleCompletedOnTask(todos, taskIndex) {
   if (todos[taskIndex]) {
     todos[taskIndex].completed = !todos[taskIndex].completed;
   }
-}
+}
+
+export function deleteCompleted(todoList) {
+  const completed = todoList.filter((todo) => !todo.completed);
+  todoList.length = 0;
+  todoList.push(...completed);
+}
diff --git a/Sprint-3/todo-list/todos.test.mjs b/Sprint-3/todo-list/todos.test.mjs
@@ -130,3 +130,12 @@ describe("toggleCompletedOnTask()", () => {
   });
 });
 
+test("deleteCompleted removes all completed tasks", () => {
+  const todoList = [
+    { task: "Wash dishes", completed: true },
+    { task: "Do shopping", completed: false },
+    { task: "Read book", completed: true },
+  ];
+  Todos.deleteCompleted(todoList);
+  expect(todoList).toEqual([{ task: "Do shopping", completed: false }]);
+});