How to create a revealing sidebar using HTML CSS and JavaScript?

Last Updated : 19 Jun, 2024

A revealing sidebar is a hidden UI element that becomes visible upon user interaction, such as clicking or swiping, providing navigation links. The content of the page will rotate and the navigation bar will reveal itself when the menu button is clicked.

Approach

Create an HTML file with headings and a navigation bar, link the CSS file for styling, and include icons for opening and closing the navigation bar. Add <script> tags for index.js and icon usage.
Reset browser default styles using CSS, apply classes and IDs for styling and layout, and use :hover selectors for interactive effects. Implement animations for smooth transitions and ensure responsive design for various devices.
Create index.js, add event listeners to detect and handle mouse click events to manage the navigation bar, ensuring an interactive user experience.

Example: This example shows the implementation of the above-explained approach.

HTML

<!-- Filnename: index.html --> <!DOCTYPE html> <html>  <head>     <link rel="stylesheet" href="style.css"> </head>  <body>     <div class="main_box show-nav">         <div class="circle-container">             <div class="circle">                 <button class="open">                     <i class="fas fa-bars"></i>                 </button>                 <button class="close">                     <i class="fas fa-times"></i>                 </button>             </div>         </div>         <div class="content">             <h1 style="color: green;">                 GeeksforGeeks             </h1>             <small>Hello Geeks</small>             <p>                 GeeksforGeeks is a good platform to                 learn programming. It is an educational                 website. Prepare for the Recruitment drive                 of product based companies like Microsoft,                 Amazon, Adobe etc with a free                 online placement preparation course. The                 course focuses on various MCQ's and Coding                 question likely to be asked in the interviews                 and make your upcoming placement season                 efficient and successful.             </p>              <p>                 Also, any geeks can help other geeks by                 writing articles on the GeeksforGeeks,                 publishing articles follow few steps                 that are Articles that need little                 modification or improvement from reviewers                 are published first. To quickly get your                 articles reviewed, please refer existing                 articles, their formatting style, coding                 style, and try to make you are close to                 them. In case you are a beginner, you                 may refer Guidelines to write an Article.             </p>           </div>     </div>     <nav>         <ul class="nav-links">             <li>home</li>             <li>about</li>             <li>contact</li>         </ul>     </nav>     <script src="https://kit.fontawesome.com/704ff50790.js"         crossorigin="anonymous"></script>     <script src="index.js"></script> </body>  </html>

CSS

/*Filename: style.css File  */ * {     box-sizing: border-box; }  body {     overflow-x: hidden;     margin: 0;     background: #000;     color: #fff; }  .main_box {     background-color: #fafafa;     color: #000;     transform-origin: top left;     transition: transform 0.5 linear;     width: 100vw;     min-height: 100vh;     padding: 3em; }  .main_box.show-nav {     transform: rotate(-20deg); }  .circle-container {     position: fixed;     top: -6em;     left: -6em; }  .circle {     background-color: #ff7979;     height: 12em;     width: 12em;     border-radius: 50%;     position: relative;     transition: transform 0.5s linear;     cursor: pointer; }  .circle button {     position: absolute;     top: 50%;     left: 50%;     height: 6em;     background: transparent;     border: 0;     color: #fff;     cursor: pointer; }  .circle button:focus {     outline: none; }  .circle button.open {     left: 60%; }  .circle button.close {     top: 60%;     transform: rotate(90deg);     transform-origin: top left; }  .main_box.show-nav .circle {     transform: rotate(-70deg); }  nav {     position: fixed;     left: 0;     bottom: 2.5em;     z-index: 5; }  nav ul {     list-style: none;     padding-left: 2em; }  nav ul li {     text-transform: uppercase;     color: rgb(243, 243, 243);     margin: 2.5em 0;     transform: translateX(-100%);     transition: transform 0.4 ease-in; }  nav ul li+li {     margin-left: 1em;     transform: translateX(-150%); }  nav ul li+li+li {     margin-left: 2em;     transform: translateX(-200%); }  .main_box.show-nav+nav li {     transform: translateX(0);     transition-delay: 0.3s; }  .nav-links {     cursor: pointer; }

JavaScript

// Filename: index.js  document.addEventListener('DOMContentLoaded', (event) => {     const mainBox = document.querySelector('.main_box');     const circle = document.querySelector('.circle');     const openBtn = document.querySelector('.open');     const closeBtn = document.querySelector('.close');     const navLinks = document.querySelectorAll('nav ul li');      openBtn.addEventListener('click', () => {         mainBox.classList.add('show-nav');         navLinks.forEach((link, index) => {             link.style.transitionDelay = `${index * 0.1}s`;             link.style.transform = 'translateX(0)';         });     });      closeBtn.addEventListener('click', () => {         mainBox.classList.remove('show-nav');         navLinks.forEach((link) => {             link.style.transitionDelay = '0s';             link.style.transform = '';         });     }); });

Output:

How to Create a Slider using HTML and CSS?

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How to create a revealing sidebar using HTML CSS and JavaScript?

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