Instant Dark/light mode Switcher with pure Vanilla JS & CSS

dev.to CSS2026-11-12 00:440 views

I built a lightweight, responsive Dark/Light mode toggle component using pure HTML, CSS custom properties, and Vanilla JavaScript.

Zero dependencies (no Tailwind, React, or jQuery required).
Smooth CSS color transitions.
Persistent user preference saved via localStorage. You can grab the full component files and setup instructions for free (or pay-what-you-want): https://yomna67.gumroad.com/l/dark-mode-toggle

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