7 JavaScript Theme Switches
This collection demonstrates the modern standard for implementing a JavaScript theme switches. At its core is a simple yet powerful combination: JavaScript toggles a data-attribute on the <html> element, and CSS picks up the changes via selectors ([data-theme="dark"]). A key aspect is persisting the user’s choice between sessions using localStorage, and the examples also show how to read system preferences via the prefers-color-scheme media query.
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Animated Sign-In Form with Theme Switcher
An interactive login form that performs a 360-degree 3D flip animation to seamlessly transition between vibrant, gradient-based color themes triggered by a JavaScript state manager.
Tri-State Theme Toggle with light-dark()
A practical example of the new light-dark() CSS function combined with native Web Components to create a flexible theme switcher. The entire system is controlled via data-attributes and includes an additional high-contrast mode for better accessibility.
