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React 19+ · Type Alias

Usable

React components are JavaScript functions that return UI markup. Combine them into reusable, nested parts of an interface.

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Syntax

function ComponentName(props) { return <Element />; }

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  • JSX
  • props
  • Hooks
  • Components
  • React DOM

Source: Describing the UI – React. Checked 2026-11-03.