To-Do List In HTML CSS JavaScript

We will be creating a simple To-Do list in HTML CSS JavaScript. Features of To-Do list app are:

Add new tasks
Mark tasks as completed
Show pending tasks
Show completed tasks
Clear all tasks

We will be using HTML, CSS and JavaScript for developing To-Do List in HTML CSS JavaScript. Checkout this image for folder structure of our project.

folder structure for To-Do List in HTML CSS JavaScript

index.html contains our Html code.

style.css contains styling for our web page.

main.js contains all the logic.

If you want a single file(HTML+CSS+JavaScript), click here.

HTML code:

<html lang="en">
  <head>
    <meta charset="UTF-8" />
    <meta http-equiv="X-UA-Compatible" content="IE=edge" />
    <meta name="viewport" content="width=device-width, initial-scale=1.0" />
    <link rel='stylesheet' type='text/css' ' media="screen" href="style.css"/>
    <title>Todo List App</title>
  </head>

  <body>
    <div class="wrapper">
      <div class="task-input">
        <ion-icon name="create-outline"></ion-icon>
        <input type="text" placeholder="Add a New Task + Enter" />
      </div>
      <div class="controls">
        <div class="filters">
          <span class="active" id="all">All</span>
          <span id="pending">Pending</span>
          <span id="completed">Completed</span>
        </div>
        <button class="clear-btn">Clear All</button>
      </div>
      <ul class="task-box"></ul>
    </div>
    <script src="main.js"></script>
  </body>
</html>

JavaScript code:

const taskInput = document.querySelector(".task-input input"),
    filters = document.querySelectorAll(".filters span"),
    clearAll = document.querySelector(".clear-btn"),
    taskBox = document.querySelector(".task-box");

let editId,
    isEditTask = false,
    todos = JSON.parse(localStorage.getItem("todo-list"));

filters.forEach((btn) => {
    btn.addEventListener("click", () => {
        document.querySelector("span.active").classList.remove("active");
        btn.classList.add("active");
        showTodo(btn.id);
    });
});

showTodo("all");

function showTodo(filter) {
    let liTag = "";
    if (todos) {
        todos.forEach((todo, id) => {
            let completed = todo.status == "completed" ? "checked" : "";
            if (filter == todo.status || filter == "all") {
                liTag += `<li class="task">
                            <label for="${id}">
                                <input onclick="updateStatus(this)" type="checkbox" id="${id}" ${completed}>
                                <p class="${completed}">${todo.name}</p>
                            </label>
                            <div class="settings">
                                <i onclick="showMenu(this)" class="uil uil-ellipsis-h"></i>
                                <ul class="task-menu">
                                    <li onclick='editTask(${id}, "${todo.name}")'><i class="uil uil-pen"></i>Edit</li>
                                    <li onclick='deleteTask(${id}, "${filter}")'><i class="uil uil-trash"></i>Delete</li>
                                </ul>
                            </div>
                        </li>`;
            }
        });
    }
    taskBox.innerHTML =
        liTag || `<span>You don't have any task here</span>`;
    let checkTask = taskBox.querySelectorAll(".task");
    !checkTask.length
        ? clearAll.classList.remove("active")
        : clearAll.classList.add("active");
    taskBox.offsetHeight >= 300
        ? taskBox.classList.add("overflow")
        : taskBox.classList.remove("overflow");
}

function showMenu(selectedTask) {
    let menuDiv = selectedTask.parentElement.lastElementChild;
    menuDiv.classList.add("show");
    document.addEventListener("click", (e) => {
        if (e.target.tagName != "I" || e.target != selectedTask) {
            menuDiv.classList.remove("show");
        }
    });
}

function updateStatus(selectedTask) {
    let taskName = selectedTask.parentElement.lastElementChild;
    if (selectedTask.checked) {
        taskName.classList.add("checked");
        todos[selectedTask.id].status = "completed";
    } else {
        taskName.classList.remove("checked");
        todos[selectedTask.id].status = "pending";
    }
    localStorage.setItem("todo-list", JSON.stringify(todos));
}

function editTask(taskId, textName) {
    editId = taskId;
    isEditTask = true;
    taskInput.value = textName;
    taskInput.focus();
    taskInput.classList.add("active");
}

function deleteTask(deleteId, filter) {
    isEditTask = false;
    todos.splice(deleteId, 1);
    localStorage.setItem("todo-list", JSON.stringify(todos));
    showTodo(filter);
}

clearAll.addEventListener("click", () => {
    isEditTask = false;
    todos.splice(0, todos.length);
    localStorage.setItem("todo-list", JSON.stringify(todos));
    showTodo();
});

taskInput.addEventListener("keyup", (e) => {
    let userTask = taskInput.value.trim();
    if (e.key == "Enter" && userTask) {
        if (!isEditTask) {
            todos = !todos ? [] : todos;
            let taskInfo = { name: userTask, status: "pending" };
            todos.push(taskInfo);
        } else {
            isEditTask = false;
            todos[editId].name = userTask;
        }
        taskInput.value = "";
        localStorage.setItem("todo-list", JSON.stringify(todos));
        showTodo(document.querySelector("span.active").id);
    }
});

CSS code:

* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
  font-family: "Poppins", sans-serif;
}

body {
  width: 100%;
  height: 100vh;
  overflow: hidden;
  background: linear-gradient(135deg, #ff00d4, #00ddff);
}

::selection {
  color: #fff;
  background: #ff00d4;
}

.wrapper {
  max-width: 405px;
  background: #fff;
  margin: 137px auto;
  border-radius: 7px;
  padding: 28px 0 30px;
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
}

.task-input {
  position: relative;
  height: 52px;
  padding: 0 25px;
}

.task-input ion-icon {
  position: absolute;
  top: 50%;
  color: #999;
  font-size: 25px;
  transform: translate(17px, -50%);
}

.task-input input {
  height: 100%;
  width: 100%;
  outline: none;
  font-size: 18px;
  border-radius: 5px;
  padding: 0 20px 0 53px;
  border: 1px solid #999;
}

.task-input input:focus,
.task-input input.active {
  padding-left: 52px;
  border: 2px solid #f12711;
}

.task-input input::placeholder {
  color: #bfbfbf;
}

.controls,
li {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.controls {
  padding: 18px 25px;
  border-bottom: 1px solid #ccc;
}

.filters span {
  margin: 0 8px;
  font-size: 17px;
  color: #444444;
  cursor: pointer;
}

.filters span:first-child {
  margin-left: 0;
}

.filters span.active {
  color: #f12711;
}

.clear-btn {
  border: none;
  opacity: 0.6;
  outline: none;
  color: #fff;
  cursor: pointer;
  font-size: 13px;
  padding: 7px 13px;
  border-radius: 4px;
  letter-spacing: 0.3px;
  pointer-events: none;
  transition: transform 0.25s ease;
  background: linear-gradient(135deg, #ff00d4 0%, #00ddff 100%);
}

.clear-btn.active {
  opacity: 0.9;
  pointer-events: auto;
}

.clear-btn:active {
  transform: scale(0.93);
}

.task-box {
  margin-top: 20px;
  margin-right: 5px;
  padding: 0 20px 10px 25px;
}

.task-box.overflow {
  overflow-y: auto;
  max-height: 300px;
}

.task-box::-webkit-scrollbar {
  width: 5px;
}

.task-box::-webkit-scrollbar-track {
  background: #f12711;
  border-radius: 25px;
}

.task-box::-webkit-scrollbar-thumb {
  background: #e6e6e6;
  border-radius: 25px;
}

.task-box .task {
  list-style: none;
  font-size: 17px;
  margin-bottom: 18px;
  padding-bottom: 16px;
  align-items: flex-start;
  border-bottom: 1px solid #ccc;
}

.task-box .task:last-child {
  margin-bottom: 0;
  border-bottom: 0;
  padding-bottom: 0;
}

.task-box .task label {
  display: flex;
  align-items: flex-start;
}

.task label input {
  margin-top: 7px;
  accent-color: #ff00d4;
}

.task label p {
  user-select: none;
  margin-left: 12px;
  word-wrap: break-word;
}

.task label p.checked {
  text-decoration: line-through;
}

.task-box .settings {
  position: relative;
}

.settings :where(i, li) {
  cursor: pointer;
}

.settings .task-menu {
  position: absolute;
  right: -5px;
  bottom: -65px;
  padding: 5px 0;
  background: #fff;
  border-radius: 4px;
  transform: scale(0);
  transform-origin: top right;
  box-shadow: 0 0 6px rgba(0, 0, 0, 0.15);
  transition: transform 0.2s ease;
  z-index: 10;
}

.task-box .task:last-child .task-menu {
  bottom: 0;
  transform-origin: bottom right;
}

.task-box .task:first-child .task-menu {
  bottom: -65px;
  transform-origin: top right;
}

.task-menu.show {
  transform: scale(1);
}

.task-menu li {
  height: 25px;
  font-size: 16px;
  margin-bottom: 2px;
  padding: 17px 15px;
  cursor: pointer;
  justify-content: flex-start;
}

.task-menu li:last-child {
  margin-bottom: 0;
}

.settings li:hover {
  background: #000;
}

.settings li i {
  padding-right: 8px;
}

@media (max-width: 400px) {
  body {
    padding: 0 10px;
  }
  .wrapper {
    padding: 20px 0;
  }
  .filters span {
    margin: 0 5px;
  }
  .task-input {
    padding: 0 20px;
  }
  .controls {
    padding: 18px 20px;
  }
  .task-box {
    margin-top: 20px;
    margin-right: 5px;
    padding: 0 15px 10px 20px;
  }
  .task label input {
    margin-top: 4px;
  }
}

Complete code for To-Do List in HTML CSS JavaScript

<html lang="en">

<head>
  <meta charset="UTF-8">
  <meta http-equiv="X-UA-Compatible" content="IE=edge">
  <meta name="viewport" content="width=device-width, initial-scale=1.0">
  <title>Todo List App</title>
</head>

<body>
  <div class="wrapper">
    <div class="task-input">
      <ion-icon name="create-outline"></ion-icon>
      <input type="text" placeholder="Add a New Task + Enter">
    </div>
    <div class="controls">
      <div class="filters">
        <span class="active" id="all">All</span>
        <span id="pending">Pending</span>
        <span id="completed">Completed</span>
      </div>
      <button class="clear-btn">Clear All</button>
    </div>
    <ul class="task-box"></ul>
  </div>
  <style>
  * {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
  font-family: "Poppins", sans-serif;
}

body {
  width: 100%;
  height: 100vh;
  overflow: hidden;
  background: linear-gradient(135deg, #ff00d4, #00ddff);
}

::selection {
  color: #fff;
  background: #ff00d4;
}

.wrapper {
  max-width: 405px;
  background: #fff;
  margin: 137px auto;
  border-radius: 7px;
  padding: 28px 0 30px;
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
}

.task-input {
  position: relative;
  height: 52px;
  padding: 0 25px;
}

.task-input ion-icon {
  position: absolute;
  top: 50%;
  color: #999;
  font-size: 25px;
  transform: translate(17px, -50%);
}

.task-input input {
  height: 100%;
  width: 100%;
  outline: none;
  font-size: 18px;
  border-radius: 5px;
  padding: 0 20px 0 53px;
  border: 1px solid #999;
}

.task-input input:focus,
.task-input input.active {
  padding-left: 52px;
  border: 2px solid #f12711;
}

.task-input input::placeholder {
  color: #bfbfbf;
}

.controls,
li {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.controls {
  padding: 18px 25px;
  border-bottom: 1px solid #ccc;
}

.filters span {
  margin: 0 8px;
  font-size: 17px;
  color: #444444;
  cursor: pointer;
}

.filters span:first-child {
  margin-left: 0;
}

.filters span.active {
  color: #f12711;
}

.clear-btn {
  border: none;
  opacity: 0.6;
  outline: none;
  color: #fff;
  cursor: pointer;
  font-size: 13px;
  padding: 7px 13px;
  border-radius: 4px;
  letter-spacing: 0.3px;
  pointer-events: none;
  transition: transform 0.25s ease;
  background: linear-gradient(135deg, #ff00d4 0%, #00ddff 100%);
}

.clear-btn.active {
  opacity: 0.9;
  pointer-events: auto;
}

.clear-btn:active {
  transform: scale(0.93);
}

.task-box {
  margin-top: 20px;
  margin-right: 5px;
  padding: 0 20px 10px 25px;
}

.task-box.overflow {
  overflow-y: auto;
  max-height: 300px;
}

.task-box::-webkit-scrollbar {
  width: 5px;
}

.task-box::-webkit-scrollbar-track {
  background: #f12711;
  border-radius: 25px;
}

.task-box::-webkit-scrollbar-thumb {
  background: #e6e6e6;
  border-radius: 25px;
}

.task-box .task {
  list-style: none;
  font-size: 17px;
  margin-bottom: 18px;
  padding-bottom: 16px;
  align-items: flex-start;
  border-bottom: 1px solid #ccc;
}

.task-box .task:last-child {
  margin-bottom: 0;
  border-bottom: 0;
  padding-bottom: 0;
}

.task-box .task label {
  display: flex;
  align-items: flex-start;
}

.task label input {
  margin-top: 7px;
  accent-color: #ff00d4;
}

.task label p {
  user-select: none;
  margin-left: 12px;
  word-wrap: break-word;
}

.task label p.checked {
  text-decoration: line-through;
}

.task-box .settings {
  position: relative;
}

.settings :where(i, li) {
  cursor: pointer;
}

.settings .task-menu {
  position: absolute;
  right: -5px;
  bottom: -65px;
  padding: 5px 0;
  background: #fff;
  border-radius: 4px;
  transform: scale(0);
  transform-origin: top right;
  box-shadow: 0 0 6px rgba(0, 0, 0, 0.15);
  transition: transform 0.2s ease;
  z-index: 10;
}

.task-box .task:last-child .task-menu {
  bottom: 0;
  transform-origin: bottom right;
}

.task-box .task:first-child .task-menu {
  bottom: -65px;
  transform-origin: top right;
}

.task-menu.show {
  transform: scale(1);
}

.task-menu li {
  height: 25px;
  font-size: 16px;
  margin-bottom: 2px;
  padding: 17px 15px;
  cursor: pointer;
  justify-content: flex-start;
}

.task-menu li:last-child {
  margin-bottom: 0;
}

.settings li:hover {
  background: #000;
}

.settings li i {
  padding-right: 8px;
}

@media (max-width: 400px) {
  body {
    padding: 0 10px;
  }
  .wrapper {
    padding: 20px 0;
  }
  .filters span {
    margin: 0 5px;
  }
  .task-input {
    padding: 0 20px;
  }
  .controls {
    padding: 18px 20px;
  }
  .task-box {
    margin-top: 20px;
    margin-right: 5px;
    padding: 0 15px 10px 20px;
  }
  .task label input {
    margin-top: 4px;
  }
}

  </style>
  <script>
  const taskInput = document.querySelector(".task-input input"),
  filters = document.querySelectorAll(".filters span"),
  clearAll = document.querySelector(".clear-btn"),
  taskBox = document.querySelector(".task-box");

let editId,
  isEditTask = false,
  todos = JSON.parse(localStorage.getItem("todo-list"));

filters.forEach((btn) => {
  btn.addEventListener("click", () => {
    document.querySelector("span.active").classList.remove("active");
    btn.classList.add("active");
    showTodo(btn.id);
  });
});

showTodo("all");

function showTodo(filter) {
  let liTag = "";
  if (todos) {
    todos.forEach((todo, id) => {
      let completed = todo.status == "completed" ? "checked" : "";
      if (filter == todo.status || filter == "all") {
        liTag += `<li class="task">
                            <label for="${id}">
                                <input onclick="updateStatus(this)" type="checkbox" id="${id}" ${completed}>
                                <p class="${completed}">${todo.name}</p>
                            </label>
                            <div class="settings">
                                <i onclick="showMenu(this)" class="uil uil-ellipsis-h"></i>
                                <ul class="task-menu">
                                    <li onclick='editTask(${id}, "${todo.name}")'><i class="uil uil-pen"></i>Edit</li>
                                    <li onclick='deleteTask(${id}, "${filter}")'><i class="uil uil-trash"></i>Delete</li>
                                </ul>
                            </div>
                        </li>`;
      }
    });
  }
  taskBox.innerHTML = liTag || `<span>You don't have any task here</span>`;
  let checkTask = taskBox.querySelectorAll(".task");
  !checkTask.length
    ? clearAll.classList.remove("active")
    : clearAll.classList.add("active");
  taskBox.offsetHeight >= 300
    ? taskBox.classList.add("overflow")
    : taskBox.classList.remove("overflow");
}

function showMenu(selectedTask) {
  let menuDiv = selectedTask.parentElement.lastElementChild;
  menuDiv.classList.add("show");
  document.addEventListener("click", (e) => {
    if (e.target.tagName != "I" || e.target != selectedTask) {
      menuDiv.classList.remove("show");
    }
  });
}

function updateStatus(selectedTask) {
  let taskName = selectedTask.parentElement.lastElementChild;
  if (selectedTask.checked) {
    taskName.classList.add("checked");
    todos[selectedTask.id].status = "completed";
  } else {
    taskName.classList.remove("checked");
    todos[selectedTask.id].status = "pending";
  }
  localStorage.setItem("todo-list", JSON.stringify(todos));
}

function editTask(taskId, textName) {
  editId = taskId;
  isEditTask = true;
  taskInput.value = textName;
  taskInput.focus();
  taskInput.classList.add("active");
}

function deleteTask(deleteId, filter) {
  isEditTask = false;
  todos.splice(deleteId, 1);
  localStorage.setItem("todo-list", JSON.stringify(todos));
  showTodo(filter);
}

clearAll.addEventListener("click", () => {
  isEditTask = false;
  todos.splice(0, todos.length);
  localStorage.setItem("todo-list", JSON.stringify(todos));
  showTodo();
});

taskInput.addEventListener("keyup", (e) => {
  let userTask = taskInput.value.trim();
  if (e.key == "Enter" && userTask) {
    if (!isEditTask) {
      todos = !todos ? [] : todos;
      let taskInfo = { name: userTask, status: "pending" };
      todos.push(taskInfo);
    } else {
      isEditTask = false;
      todos[editId].name = userTask;
    }
    taskInput.value = "";
    localStorage.setItem("todo-list", JSON.stringify(todos));
    showTodo(document.querySelector("span.active").id);
  }
});

  </script>
</body>

</html>