Dropdown Menu
A dropdown menu is a user interface component that displays a list of options when activated, typically by clicking or hovering over a trigger element like a button or link. It is commonly used in web and application design to organize navigation items, form selections, or actions in a space-efficient manner. Dropdowns help reduce visual clutter by hiding secondary content until needed.
Developers should learn dropdown menus for creating intuitive and responsive user interfaces, especially in navigation bars, form inputs, and settings panels. They are essential for mobile-first design where screen space is limited, and for improving accessibility by structuring hierarchical content. Use cases include e-commerce filters, language selectors, and user profile menus.