react

Basic idea

A declarative JavaScript UI library: describe the UI as a function of state; React diffs the resulting virtual DOM against the previous one and applies the minimal real-DOM patches.

Key facts

• Components: functions returning JSX (sugar for React.createElement).
• State: useState, useReducer; side effects: useEffect.
• Reconciliation via virtual DOM; keys identify list items across renders.
• Unidirectional data flow (props down, events up).

Pages

• React Basics

Siblings

• llvm
• spring