3 JavaScript Tooltips

Explore a variety of JavaScript Tooltip Examples, built around core browser events like mouseenter/focus and mouseleave/blur to ensure both mouse and keyboard accessibility. Each demo pulls tooltip content dynamically from custom data-* attributes, keeping the markup clean and semantic. The key technical challenge - positioning - is solved using element.getBoundingClientRect() to fetch the trigger’s coordinates, allowing the script to precisely calculate and apply the tooltip’s top and left styles. These examples also demonstrate best practices, including adding the correct ARIA attributes (aria-describedby) to link the tooltip to its trigger for screen readers, and using CSS classes to manage visibility and trigger smooth animations.

Last updated: December 25, 2025