Component API

React · Methods reference

React · Methods reference

📋 Overview

React export APIs for elements, fragments, and memoization.

🔧 Methods

React exports

API	Description
`createElement(type, props, ...children)`	Create element object
`cloneElement(element, props, ...children)`	Clone with merged props
`createContext(default)`	Context object with Provider/Consumer
`forwardRef(render)`	Forward ref to child DOM/component
`memo(Component, areEqual?)`	Skip re-render if props shallow-equal
`lazy(() => import())`	Code-split component
`Suspense`	Fallback while children suspend
`Fragment` / `<>...</>`	Group without DOM node
`StrictMode`	Dev double-render checks
`startTransition(fn)`	Mark updates as transitions
`cache(fn)` (RSC)	Dedupe server fetches
`use()` (19)	Read promise/context in render

💡 Examples

See parent topic notes for runnable snippets; this page is the complete method index.

⚠️ Pitfalls

Mutating methods return None in Python — do not chain sort() / reverse() expecting a new list.
Default JS sort() compares strings — pass (a,b) => a-b for numbers.
SQL function names differ by dialect — verify Postgres vs MySQL docs.
Django QuerySet.update() skips save() signals and auto auto_now fields on models.

Class Component Methods

React · Methods reference

Hooks API

React · Methods reference

On this page

📋 Overview 🔧 Methods React exports 💡 Examples ⚠️ Pitfalls 🔗 Related