Your React app doesn’t need all that JavaScript

React interfaces can often be simplified by using modern browser capabilities instead of custom state, event handlers, contexts, and third-party components for behaviors the platform already supports. The discussed alternatives include using a checkbox with CSS :has() and color-scheme for dark mode, while retaining minimal JavaScript only for persistence and system-preference detection; using <details> and <summary> for accessible accordions; choosing <dialog> for blocking modals and the Popover API for lightweight dismissible overlays; building carousels with scroll snapping and emerging scroll-control pseudo-elements; styling richer native select controls through appearance: base-select; and creating viewport-based animations with scroll-driven CSS timelines rather than scroll listeners or IntersectionObserver. Some newer features require progressive enhancement because browser support is still developing, but the central recommendation is to begin with the least complex native HTML and CSS primitive that meets a requirement, adding JavaScript or React state only where application-specific behavior genuinely needs it.

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