From 61ced0a6c38f3a3e89e26800b45771a1d23b8ac9 Mon Sep 17 00:00:00 2001
From: Edina Kurdi <edina.kurdi@gmail.com>
Date: Thu, 13 Aug 2026 08:16:43 +0100
Subject: [PATCH 1/7] add a button for delete all completed tasks

---
 Sprint-3/todo-list/index.html | 11 ++++++++---
 1 file changed, 8 insertions(+), 3 deletions(-)
diff --git a/Sprint-3/todo-list/index.html b/Sprint-3/todo-list/index.html
index 4d12c4654..d112d4e4d 100644
--- a/Sprint-3/todo-list/index.html
+++ b/Sprint-3/todo-list/index.html
@@ -1,14 +1,16 @@
 <!DOCTYPE html>
 <html lang="en">
+
 <head>
   <meta charset="UTF-8" />
-  <meta name="viewport" content="width=device-width, initial-scale=1.0"/>
+  <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>
@@ -16,9 +18,11 @@ <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>
+      <button id="delet-completed-btn">Delete completed</button>
+
     </div>
 
-    <ul id="todo-list" class="todo-list">      
+    <ul id="todo-list" class="todo-list">
     </ul>
 
     <!-- 
@@ -37,4 +41,5 @@ <h1>My ToDo List</h1>
 
   </div>
 </body>
-</html>
+
+</html>
\ No newline at end of file

From 743c0b426f0bcd4a45a7222aa25297abe1202cfc Mon Sep 17 00:00:00 2001
From: Edina Kurdi <edina.kurdi@gmail.com>
Date: Thu, 13 Aug 2026 09:44:19 +0100
Subject: [PATCH 2/7] implement deleteCompleted()

---
 Sprint-3/todo-list/todos.mjs | 12 +++++++++++-
 1 file changed, 11 insertions(+), 1 deletion(-)

diff --git a/Sprint-3/todo-list/todos.mjs b/Sprint-3/todo-list/todos.mjs
index f17ab6a25..114c9ef08 100644
--- a/Sprint-3/todo-list/todos.mjs
+++ b/Sprint-3/todo-list/todos.mjs
@@ -26,4 +26,14 @@ export function toggleCompletedOnTask(todos, taskIndex) {
   if (todos[taskIndex]) {
     todos[taskIndex].completed = !todos[taskIndex].completed;
   }
-}
\ No newline at end of file
+}
+
+// 2. In `todos.mjs`, implement a function `deleteCompleted(todoList)` that removes all completed
+//    ToDos from the given list.
+export function deleteCompleted(todoList) {
+  for (let i = todoList.length - 1; i >= 0; i--) {
+    if (todoList[i].completed === true) {
+      todoList.splice(i, 1);
+    }
+  }
+}

From 4bb8605ff9724925ad3b712618ea2b345f1ab17f Mon Sep 17 00:00:00 2001
From: Edina Kurdi <edina.kurdi@gmail.com>
Date: Thu, 13 Aug 2026 10:11:52 +0100
Subject: [PATCH 3/7] write test for  deleteCompleted()

---
 Sprint-3/todo-list/todos.test.mjs | 31 +++++++++++++++++++++----------
 1 file changed, 21 insertions(+), 10 deletions(-)

diff --git a/Sprint-3/todo-list/todos.test.mjs b/Sprint-3/todo-list/todos.test.mjs
index bae7ae491..61d4b839f 100644
--- a/Sprint-3/todo-list/todos.test.mjs
+++ b/Sprint-3/todo-list/todos.test.mjs
@@ -13,7 +13,7 @@ function createMockTodos() {
     { task: "Task 1 description", completed: true },
     { task: "Task 2 description", completed: false },
     { task: "Task 3 description", completed: true },
-    { task: "Task 4 description", completed: false },        
+    { task: "Task 4 description", completed: false },
   ];
 }
 
@@ -29,7 +29,6 @@ describe("addTask()", () => {
   });
 
   test("Should append a new task to the end of a ToDo list", () => {
-
     const todos = createMockTodos();
     const lengthBeforeAddition = todos.length;
     Todos.addTask(todos, theTask.task, theTask.completed);
@@ -42,7 +41,6 @@ describe("addTask()", () => {
 });
 
 describe("deleteTask()", () => {
-
   test("Delete the first task", () => {
     const todos = createMockTodos();
     const todosBeforeDeletion = createMockTodos();
@@ -53,7 +51,7 @@ describe("deleteTask()", () => {
 
     expect(todos[0]).toEqual(todosBeforeDeletion[1]);
     expect(todos[1]).toEqual(todosBeforeDeletion[2]);
-    expect(todos[2]).toEqual(todosBeforeDeletion[3]);        
+    expect(todos[2]).toEqual(todosBeforeDeletion[3]);
   });
 
   test("Delete the second task (a middle task)", () => {
@@ -66,7 +64,7 @@ describe("deleteTask()", () => {
 
     expect(todos[0]).toEqual(todosBeforeDeletion[0]);
     expect(todos[1]).toEqual(todosBeforeDeletion[2]);
-    expect(todos[2]).toEqual(todosBeforeDeletion[3]);        
+    expect(todos[2]).toEqual(todosBeforeDeletion[3]);
   });
 
   test("Delete the last task", () => {
@@ -79,7 +77,7 @@ describe("deleteTask()", () => {
 
     expect(todos[0]).toEqual(todosBeforeDeletion[0]);
     expect(todos[1]).toEqual(todosBeforeDeletion[1]);
-    expect(todos[2]).toEqual(todosBeforeDeletion[2]);        
+    expect(todos[2]).toEqual(todosBeforeDeletion[2]);
   });
 
   test("Delete a non-existing task", () => {
@@ -94,7 +92,6 @@ describe("deleteTask()", () => {
 });
 
 describe("toggleCompletedOnTask()", () => {
-
   test("Expect the 'completed' property to toggle on an existing task", () => {
     const todos = createMockTodos();
     const taskIndex = 1;
@@ -111,13 +108,12 @@ describe("toggleCompletedOnTask()", () => {
     const todos = createMockTodos();
     const todosBeforeToggle = createMockTodos();
     Todos.toggleCompletedOnTask(todos, 1);
-    
-    expect(todos[0]).toEqual(todosBeforeToggle[0]);    
+
+    expect(todos[0]).toEqual(todosBeforeToggle[0]);
     expect(todos[2]).toEqual(todosBeforeToggle[2]);
     expect(todos[3]).toEqual(todosBeforeToggle[3]);
   });
 
-
   test("Expect no change when toggling on a non-existing task", () => {
     const todos = createMockTodos();
     const todosBeforeToggle = createMockTodos();
@@ -130,3 +126,18 @@ describe("toggleCompletedOnTask()", () => {
   });
 });
 
+// 3. In `todos.test.mjs`, write a Jest test that verifies `deleteCompleted()` works correctly.
+describe("deleteCompleted()", () => {
+  test("should delete all the tasks that are marked completed", () => {
+    let myTodos = [
+      { task: "Description of task 1", completed: false },
+      { task: "Description of task 2", completed: true },
+    ];
+
+    deleteCompleted(myTodos);
+
+    expect(
+      myTodos.toEqual([{ task: "Description of task 1", completed: false }])
+    );
+  });
+});

From 202d0cd798a37faf487b0c8fd0a10ec3e69b41bf Mon Sep 17 00:00:00 2001
From: Edina Kurdi <edina.kurdi@gmail.com>
Date: Thu, 13 Aug 2026 10:22:06 +0100
Subject: [PATCH 4/7] correct test code

---
 Sprint-3/todo-list/todos.test.mjs | 8 ++++----
 1 file changed, 4 insertions(+), 4 deletions(-)

diff --git a/Sprint-3/todo-list/todos.test.mjs b/Sprint-3/todo-list/todos.test.mjs
index 61d4b839f..23a721c1d 100644
--- a/Sprint-3/todo-list/todos.test.mjs
+++ b/Sprint-3/todo-list/todos.test.mjs
@@ -134,10 +134,10 @@ describe("deleteCompleted()", () => {
       { task: "Description of task 2", completed: true },
     ];
 
-    deleteCompleted(myTodos);
+    Todos.deleteCompleted(myTodos);
 
-    expect(
-      myTodos.toEqual([{ task: "Description of task 1", completed: false }])
-    );
+    expect(myTodos).toEqual([
+      { task: "Description of task 1", completed: false },
+    ]);
   });
 });

From 552de1363ffc852e5cc4ca8e8136ff5143b9f708 Mon Sep 17 00:00:00 2001
From: Edina Kurdi <edina.kurdi@gmail.com>
Date: Thu, 13 Aug 2026 10:23:46 +0100
Subject: [PATCH 5/7] add another line to test

---
 Sprint-3/todo-list/todos.test.mjs | 1 +
 1 file changed, 1 insertion(+)

diff --git a/Sprint-3/todo-list/todos.test.mjs b/Sprint-3/todo-list/todos.test.mjs
index 23a721c1d..91363fdce 100644
--- a/Sprint-3/todo-list/todos.test.mjs
+++ b/Sprint-3/todo-list/todos.test.mjs
@@ -132,6 +132,7 @@ describe("deleteCompleted()", () => {
     let myTodos = [
       { task: "Description of task 1", completed: false },
       { task: "Description of task 2", completed: true },
+      { task: "Description of task 2", completed: true },
     ];
 
     Todos.deleteCompleted(myTodos);

From cd1380a59a827610cd604464e5b1ed251aae93a5 Mon Sep 17 00:00:00 2001
From: Edina Kurdi <edina.kurdi@gmail.com>
Date: Thu, 13 Aug 2026 10:27:08 +0100
Subject: [PATCH 6/7] correct typo

---
 Sprint-3/todo-list/index.html | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/Sprint-3/todo-list/index.html b/Sprint-3/todo-list/index.html
index d112d4e4d..974978fa4 100644
--- a/Sprint-3/todo-list/index.html
+++ b/Sprint-3/todo-list/index.html
@@ -18,7 +18,7 @@ <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>
-      <button id="delet-completed-btn">Delete completed</button>
+      <button id="delete-completed-btn">Delete completed</button>
 
     </div>
 

From 2b5e0c4a95a4d7bb85f1b134fbfbf2fae3599fb6 Mon Sep 17 00:00:00 2001
From: Edina Kurdi <edina.kurdi@gmail.com>
Date: Thu, 13 Aug 2026 10:39:08 +0100
Subject: [PATCH 7/7] add eventListener

---
 Sprint-3/todo-list/script.mjs | 27 +++++++++++++++++----------
 1 file changed, 17 insertions(+), 10 deletions(-)

diff --git a/Sprint-3/todo-list/script.mjs b/Sprint-3/todo-list/script.mjs
index ba0b2ceae..f40d31335 100644
--- 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 +9,13 @@ 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);
 
   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 +44,11 @@ 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 +60,24 @@ 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;
-}
\ No newline at end of file
+}
+
+// 4. In `script.js`, call `deleteCompleted()` whenever the new button is clicked.
+//     - ⚠️ You should not need to modify the `render()` function.
+document
+  .getElementById("delete-completed-btn")
+  .addEventListener("click", () => {
+    Todos.deleteCompleted(todos);
+    render();
+  });
