Client State
Client state refers to data that is stored and managed locally on the user's device (client-side) within a web or mobile application, typically in memory or browser storage. It includes UI state, form inputs, user preferences, and temporary data that doesn't need to be persisted to a server. This concept is fundamental in frontend development for creating responsive, interactive user interfaces without constant server communication.
Developers should use client state when building dynamic applications that require fast UI updates, offline functionality, or reduced server load, such as single-page applications (SPAs), real-time dashboards, or form-heavy interfaces. It's essential for managing transient data like toggles, pagination, or user session details that don't require backend persistence, improving performance and user experience by minimizing network requests.