The Easiest Way to Add Dark Mode to Your Website
The ability to use websites and applications in dark mode has grown in popularity in recent years. It relieves eye strain, prolongs battery life on OLED-screening devices, and offers an aesthetically pleasing substitute for the traditional light theme. This tutorial will show you how to use JavaScript to toggle themes and CSS variables to add dark mode to your website.
Step 1: Setting Up Your HTML
First, let's start with a basic HTML structure. Create an index.html file with the following content:
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<title>Dark Mode Example</title>
<link rel="stylesheet" href="styles.css">
</head>
<body>
<header>
<h1>Welcome to Dark Mode Tutorial</h1>
<button id="theme-toggle">Toggle Dark Mode</button>
</header>
<main>
<p>This is a sample website to demonstrate dark mode implementation.</p>
</main>
<script src="script.js"></script>
</body>
</html>
This HTML file includes a header with a title and a button to toggle dark mode, a main content area with some text, and links to our CSS and JavaScript files.
Step 2: Defining CSS Variables
Now let's define the variables in our CSS. Make a styles.css file with the following content:
:root {
--background-color: #ffffff;
--text-color: #000000;
--header-background-color: #f1f1f1;
}
body {
background-color: var(--background-color);
color: var(--text-color);
font-family: Arial, sans-serif;
transition: background-color 0.3s, color 0.3s;
}
header {
background-color: var(--header-background-color);
padding: 20px;
text-align: center;
}
button {
padding: 10px 20px;
margin-top: 20px;
cursor: pointer;
}
.dark-mode {
--background-color: #181818;
--text-color: #ffffff;
--header-background-color: #242424;
}
We use :root to define a group of CSS variables in this CSS file. For the light mode, these variables determine the background color, text color, and header background color. Additionally, a .dark-mode class is defined, and its settings take precedence over these variables. A seamless transition between themes is guaranteed by the body element's transition property.
Step 3: Adding JavaScript for Theme Toggling
Now, let's add the JavaScript to handle the theme toggling. Create a script.js file with the following content:
const themeToggle = document.getElementById('theme-toggle');
const body = document.body;
// Check for saved user preference
const savedTheme = localStorage.getItem('theme');
if (savedTheme) {
body.classList.add(savedTheme);
}
// Toggle dark mode
themeToggle.addEventListener('click', () => {
body.classList.toggle('dark-mode');
// Save user preference
if (body.classList.contains('dark-mode')) {
localStorage.setItem('theme', 'dark-mode');
} else {
localStorage.removeItem('theme');
}
});
This script selects the theme toggle button and the body element. When the button is clicked, it toggles the dark-mode class on the body. The script also saves the user's theme preference in localStorage, so the theme persists across page reloads.
Step 4: Testing the Implementation
Launch your web browser and open the index.html file to test the implementation. To switch between bright and dark themes, click the "Toggle Dark Mode" button.
Remember that refreshing the page shouldn't affect the theme preference.
Conclusion
You can quickly add a dark mode toggle to your website by utilizing CSS variables and a little JavaScript. This methodology facilitates seamless theme transitions and offers an enhanced user experience. Please feel free to add more elements to your page and modify the styles in order to build upon this lesson.
Happy coding :D
The above is the detailed content of The Easiest Way to Add Dark Mode to Your Website. For more information, please follow other related articles on the PHP Chinese website!
Hot AI Tools
Undresser.AI Undress
AI-powered app for creating realistic nude photos
AI Clothes Remover
Online AI tool for removing clothes from photos.
Undress AI Tool
Undress images for free
Clothoff.io
AI clothes remover
AI Hentai Generator
Generate AI Hentai for free.
Hot Article
Hot Tools
Notepad++7.3.1
Easy-to-use and free code editor
SublimeText3 Chinese version
Chinese version, very easy to use
Zend Studio 13.0.1
Powerful PHP integrated development environment
Dreamweaver CS6
Visual web development tools
SublimeText3 Mac version
God-level code editing software (SublimeText3)
Hot Topics
1377
52
How do I create and publish my own JavaScript libraries?
Mar 18, 2025 pm 03:12 PM
Article discusses creating, publishing, and maintaining JavaScript libraries, focusing on planning, development, testing, documentation, and promotion strategies.
How do I optimize JavaScript code for performance in the browser?
Mar 18, 2025 pm 03:14 PM
The article discusses strategies for optimizing JavaScript performance in browsers, focusing on reducing execution time and minimizing impact on page load speed.
What should I do if I encounter garbled code printing for front-end thermal paper receipts?
Apr 04, 2025 pm 02:42 PM
Frequently Asked Questions and Solutions for Front-end Thermal Paper Ticket Printing In Front-end Development, Ticket Printing is a common requirement. However, many developers are implementing...
How do I debug JavaScript code effectively using browser developer tools?
Mar 18, 2025 pm 03:16 PM
The article discusses effective JavaScript debugging using browser developer tools, focusing on setting breakpoints, using the console, and analyzing performance.
How do I use source maps to debug minified JavaScript code?
Mar 18, 2025 pm 03:17 PM
The article explains how to use source maps to debug minified JavaScript by mapping it back to the original code. It discusses enabling source maps, setting breakpoints, and using tools like Chrome DevTools and Webpack.
How do I use Java's collections framework effectively?
Mar 13, 2025 pm 12:28 PM
This article explores effective use of Java's Collections Framework. It emphasizes choosing appropriate collections (List, Set, Map, Queue) based on data structure, performance needs, and thread safety. Optimizing collection usage through efficient
TypeScript for Beginners, Part 2: Basic Data Types
Mar 19, 2025 am 09:10 AM
Once you have mastered the entry-level TypeScript tutorial, you should be able to write your own code in an IDE that supports TypeScript and compile it into JavaScript. This tutorial will dive into various data types in TypeScript. JavaScript has seven data types: Null, Undefined, Boolean, Number, String, Symbol (introduced by ES6) and Object. TypeScript defines more types on this basis, and this tutorial will cover all of them in detail. Null data type Like JavaScript, null in TypeScript
Getting Started With Chart.js: Pie, Doughnut, and Bubble Charts
Mar 15, 2025 am 09:19 AM
This tutorial will explain how to create pie, ring, and bubble charts using Chart.js. Previously, we have learned four chart types of Chart.js: line chart and bar chart (tutorial 2), as well as radar chart and polar region chart (tutorial 3). Create pie and ring charts Pie charts and ring charts are ideal for showing the proportions of a whole that is divided into different parts. For example, a pie chart can be used to show the percentage of male lions, female lions and young lions in a safari, or the percentage of votes that different candidates receive in the election. Pie charts are only suitable for comparing single parameters or datasets. It should be noted that the pie chart cannot draw entities with zero value because the angle of the fan in the pie chart depends on the numerical size of the data point. This means any entity with zero proportion
