Async Behavior API Simulation
Explore how to manage asynchronous behavior in React by simulating API calls, handling loading and error states, and using conditional rendering. Understand how to create predictable and responsive async user interfaces that represent multiple states over time.
As our applications begin to interact with real-world systems, we move beyond static data and enter the world of asynchronous behavior. Data no longer arrives instantly. It takes time, may fail, and can arrive in unpredictable ways. To build reliable user interfaces, we must learn how to simulate and manage this behavior correctly. This lesson builds a mental model for async UI, simulates API calls, and designs proper loading and error handling patterns.
What asynchronous UI means
Rendering in React is synchronous. When the component runs, it produces UI ...