Local Storage Todo List

Summary

Demonstrating how to use local storage to store text data with a simple todo list application.

You can add some to do items and clear them all.

Using:

• html
• css
• javascript.

HTML Code

<div class="container">
  <div class="to-do-app">
    <h2>To-do App</h2>
    <br />
    <input type="text" id="item" placeholder="Enter item..." />
    <br />
    <br />
    <button onclick="add()">Add Item <i class="fa-solid fa-plus"></i></button>
    <button onclick="del()">Clear all <i class="fa-solid fa-ban"></i></button>
  </div>
  <ul class="to-do-list"></ul>
</div>

CSS Code

@import url('https://fonts.googleapis.com/css2?family=Asap&display=swap');
* {
  padding: 0;
  margin: 0;
  box-sizing: border-box;
}
body {
  width: 100%;
  height: 100vh;
  background-color: #e0d6e9;
  font-family: 'Asap', sans-serif;
}
.container {
  max-width: 405px;
  margin: 137px auto;
  padding: 20px;
  display: flex;
  flex-direction: column;
}
.to-do-app {
  width: 100%;
  padding: 20px;
  border-radius: 5px;
  background-color: whitesmoke;
  border: 1px solid #d3d3d3;
}
.to-do-app h2 {
  padding: 10px;
}
.to-do-app input {
  width: 250px;
  padding: 5px;
  border-radius: 5px;
  border: 1px solid #d3d3d3;
}
.to-do-app button {
  width: fit-content;
  padding: 5px;
  cursor: pointer;
  border: 1px solid #d3d3d3;
  border-radius: 5px;
  background-color: whitesmoke;
}
.to-do-app button:hover {
  background-color: rgba(0, 0, 0, 0.1);
}
li {
  font-size: 1.5rem;
}
.to-do-list {
  margin-top: 20px;
  margin-right: 5px;
  padding: 0 20px 10px 25px;
  display: flex;
  flex-direction: column;
  gap: 15px;
  list-style: none;
}
.to-do-list li {
  font-size: small;
  background-color: whitesmoke;
  padding: 20px;
}

JavaScript Code

const ul = document.querySelector('ul');

const input = document.getElementById('item');

let itemsArray = localStorage.getItem('items')
  ? JSON.parse(localStorage.getItem('items'))
  : [];

itemsArray.forEach(addTask);

function addTask(text) {
  const li = document.createElement('li');
  li.textContent = text;
  ul.appendChild(li);
}

function add() {
  itemsArray.push(input.value);
  localStorage.setItem('items', JSON.stringify(itemsArray));
  addTask(input.value);
  input.value = '';
}

function del() {
  localStorage.clear();
  ul.innerHTML = '';
  itemsArray = [];
}

Demo

Here is the link to the demo on Code Pen.

Link to Demo