The Popover API shifts tooltip responsibility from JavaScript libraries to browser primitives¶
Insight: According to Smashing Magazine, the browser's native Popover API eliminates "entire categories of accessibility bugs" by automating ARIA state management, keyboard handling, and focus restoration. The old approach required approximately 60 lines of JavaScript with five event listeners; the native implementation uses roughly 10 lines of declarative HTML with zero event listeners. The browser "now understands what the tooltip is supposed to be."
Detail: The Popover API represents a "lowering of the baseline" for design systems: simpler tooltip/popover implementations become secure and accessible by default. Libraries remain valuable for large design systems requiring centralized behavior, complex collision-detection positioning, and teams lacking accessibility expertise. JavaScript still serves a purpose for refined behavior (hover delays, intent detection) but now operates atop stable platform primitives rather than compensating for missing ones. For design system teams, this means simpler components can drop library dependencies while complex patterns continue to benefit from abstraction.