Every React Concept Explained in 12 Minutes

React is a JavaScript library for building user interfaces using components, which are reusable JavaScript functions returning JSX, a syntax resembling HTML but written in camelCase (e.g., className instead of class). Components enable dynamic interfaces by embedding JavaScript values within curly braces. Props pass data between components, including children for composition, while the key prop ensures unique identification in lists. React renders UI by updating the virtual DOM, using diffing and reconciliation to efficiently sync changes with the real DOM. State, managed via hooks like useState and useReducer, drives dynamic updates, with controlled components tying input values to state. Hooks like useEffect handle side effects, useRef accesses DOM elements, and useContext shares data across components. Features like strict mode, portals, suspense, and error boundaries enhance development, manage component rendering, and handle errors gracefully.
Source: Code Bootcamp

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