Dark Mode Toggle Javascript Tutorial For Website or Blog

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In today's post, I'm excited to share a simple yet powerful way to add dark mode functionality to your website or blog. This is especially useful because many web technologies still struggle to follow system themes automatically. Even though users can find dark mode plugins for browsers, not everyone has them installed.

This tutorial is part of a series where I share various widgets that I have created for blogs and websites. Today, we’ll look at how to implement a ‘Dark Mode Toggle’. This button will allow your visitors to switch your site’s theme between dark and light modes effortlessly.

The beauty of this dark mode toggle is that it is created purely using vanilla JavaScript, meaning it doesn’t require any additional libraries. This makes it incredibly easy to integrate into any website, whether you’re using Blogger, WordPress, or any other platform.

To get started, simply copy and paste the following code snippet before the closing `</body>` tag in your HTML file,  (only the<script>...</script> part):

That’s all you need to do in terms of HTML. Just save your file and reload your page.

As someone who spends a lot of time in front of a computer screen, I find dark mode indispensable. It significantly reduces eye strain and helps me focus better. Adding dark mode functionality to your website or any other application is essential in this modern age.

The way this dark mode works is by inverting colors, so instead of hardcoded colors, it dynamically changes based on the original color. For example, a color of `#FFFFFF` (white) would be inverted to `#000000` (black), and `#EEEEEE` would become `#111111`. This approach ensures a smooth transition to darker shades rather than just switching between black and white.

Moreover, I’ve included a feature to remember the user’s choice, so if they refresh the page, the theme will remain in the last state they selected.

I hope you find this widget helpful and easy to implement. Dark mode can make a significant difference in user experience, especially for those of us who spend long hours in front of a screen.

To revisit the 'Back to Top' widget and see how it complements the new dark mode feature, check out the link below:

[Add Floating Go to Top Button Into Your Website or Blog]

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