react: Other APIs

• Built-in React components
• Other React APIs

---

Built-in React components

React exposes a few built-in components that you can use in your JSX.

• <Fragment>, alternatively written as <>...</>, lets you group multiple JSX nodes together.
• <Suspense> lets you display a fallback while the child components are loading.
• <StrictMode> enables extra development-only checks that help you find bugs early.

---

Other React APIs

• createContext lets you define and provide context to the child components. Used with useContext.
• forwardRef lets your component expose a DOM node as a ref to the parent. Used with useRef.
• lazy lets you defer loading a component’s code until it’s rendered for the first time.
• memo lets your component skip re-renders with same props. Used with useMemo and useCallback.
• startTransition lets you mark a state update as non-urgent. Similar to useTransition.