Create A Todo List App in HTML CSS & JavaScript

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Create A Todo List App in HTML CSS & JavaScript

Hey friends, today in this blog, you’ll learn how to create a complete Todo List App with crud operations in HTML CSS & JavaScript. Crud operation means to create, read, update, and delete. If you’re an absolute beginner, this todo will be a little bit difficult for you to create.

For beginners, you can try to create this easy Todo List App in JavaScript. In this todo, there are no features for editing and completing tasks so, it will be easy for you to create than the current one.

If you don’t know, the todo list app is a list of things that need to be done or want to be done. This app is generally used to maintain our day-to-day tasks list. Okay, without further delay, let’s back to this project.

In this todo app, you can easily add, edit, delete or mark as complete your tasks. There are filters button too that helps you to filter the tasks accordingly. The tasks you added to this todo app will be stored in the browser’s local storage so, they won’t be removed on page refresh or tab close. You can also delete all tasks at once by clicking on the “Clear All” button.

If you’re curious to view a live demo of it, click here to view it, and for a full video tutorial of this Todo List App in JavaScript, you can watch the given YouTube video.

Video Tutorial of Todo List App in JavaScript

 
In the above video, you’ve seen the demo of the Todo App, its several features, and how I created it using HTML CSS & JavaScript. I hope you watched the video till the end and learn something new from it.

If you didn’t watch the video completely, I request you to watch it and understand the codes and logic properly else you might get confused later on while creating this todo app or implementing the codes in your projects.

If you liked this todo app and want to get source codes or files, you can easily copy or download them from the bottom of this page. You can also try to build this Notes App in JavaScript to increase your skills even more.

You might like this:

Todo List App in JavaScript [Source Codes]

To create this Todo List App in JavaScript. First, you need to create three Files: HTML, CSS & JavaScript File. After creating these files just paste the given codes into your file. You can also download the source code files of this todo app from the below download button.

First, create an HTML file with the name of index.html and paste the given codes into your HTML file. Remember, you’ve to create a file with .html extension.

<!DOCTYPE html>
<!-- Coding By CodingNepal - youtube.com/codingnepal -->
<html lang="en" dir="ltr">
  <head>
    <meta charset="utf-8">  
    <title>Todo List App in JavaScript | CodingNepal</title>
    <link rel="stylesheet" href="style.css">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <!-- Iconscout Link For Icons -->
    <link rel="stylesheet" href="https://unicons.iconscout.com/release/v4.0.0/css/line.css">
  </head>
  <body>
    <div class="wrapper">
      <div class="task-input">
        <img src="bars-icon.svg" alt="icon">
        <input type="text" placeholder="Add a new task">
      </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="script.js"></script>

  </body>
</html>

Second, create a CSS file with the name of style.css and paste the given codes in your CSS file. Remember, you’ve to create a file with .css extension.

/* Import Google Font - Poppins */
@import url('https://fonts.googleapis.com/css2?family=Poppins:wght@400;500;600;700&display=swap');
*{
  margin: 0;
  padding: 0;
  box-sizing: border-box;
  font-family: 'Poppins', sans-serif;
}
body{
  width: 100%;
  height: 100vh;
  overflow: hidden;
  background: linear-gradient(135deg, #4AB1FF, #2D5CFE);
}
::selection{
  color: #fff;
  background: #3C87FF;
}
.wrapper{
  max-width: 405px;
  padding: 28px 0 30px;
  margin: 137px auto;
  background: #fff;
  border-radius: 7px;
  box-shadow: 0 10px 30px rgba(0,0,0,0.1);
}
.task-input{
  height: 52px;
  padding: 0 25px;
  position: relative;
}
.task-input img{
  top: 50%;
  position: absolute;
  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 #3C87FF;
}
.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: #3C87FF;
}
.controls .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, #1798fb 0%, #2D5CFE 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: #f1f1f1;
  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: #3C87FF;
}
.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{
  z-index: 10;
  right: -5px;
  bottom: -65px;
  padding: 5px 0;
  background: #fff;
  position: absolute;
  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;
}
.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: #f5f5f5;
}
.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;
  }
}

Last, create a JavaScript file with the name of script.js and paste the given codes in your JavaScript file. Remember, you’ve to create a file with .js extension.

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);
    });
});

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");
}
showTodo("all");

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);
    }
});

That’s all, now you’ve successfully created a Todo List App in HTML CSS & JavaScript. If your code doesn’t work or you’ve faced any problems, please download the source code files from the given download button. It’s free and a .zip file will be downloaded then you’ve to extract it.

 

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10 COMMENTS

  1. i keep getting error on classList undefined in the console even after i changed to lastElementChild…was very challenging to follow from there. i dont know what to do. even the p.checked wont strikethrough when i click after adding it in css

    • You may have done some mistakes in HTML or JavaScript file. Please, view the above codes and try to match them with your one.

  2. Please after adding the task I’m not seeing the three dotted lines which I presume are the ellipsis…and I have rechecked your javascript with mine…

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