React DOM Methods

React · Methods reference

React · Methods reference

📋 Overview

react-dom/client and react-dom APIs for mounting and portals.

🔧 Methods

Client root (React 18+)

API	Description
`createRoot(domNode)`	Create concurrent root
`root.render(element)`	Render into root
`root.unmount()`	Unmount tree
`hydrateRoot(domNode, element)`	Hydrate SSR markup

DOM helpers

API	Description
`createPortal(children, domNode)`	Render subtree elsewhere in DOM
`flushSync(fn)`	Force synchronous render inside fn

💡 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.

Root
Portals

Hooks API

React · Methods reference

On this page

📋 Overview 🔧 Methods Client root (React 18+)DOM helpers 💡 Examples ⚠️ Pitfalls 🔗 Related