Files
react/packages/react
Andrew Clark ec160f32c2 Combine ReactJSXElementValidator with main module (#28317)
There are too many layers to the JSX runtime implementation. I think
basically everything should be implemented in a single file, so that's
what I'm going to do.

As a first step, this deletes ReactJSXElementValidator and moves all the
code into ReactJSXElement. I can already see how this will help us
remove more indirections in the future.

Next I'm going to do start moving the `createElement` runtime into this
module as well, since there's a lot of duplicated code.
2024-02-19 22:14:29 -05:00
..

react

React is a JavaScript library for creating user interfaces.

The react package contains only the functionality necessary to define React components. It is typically used together with a React renderer like react-dom for the web, or react-native for the native environments.

Note: by default, React will be in development mode. The development version includes extra warnings about common mistakes, whereas the production version includes extra performance optimizations and strips all error messages. Don't forget to use the production build when deploying your application.

Usage

import { useState } from 'react';
import { createRoot } from 'react-dom/client';

function Counter() {
  const [count, setCount] = useState(0);
  return (
    <>
      <h1>{count}</h1>
      <button onClick={() => setCount(count + 1)}>
        Increment
      </button>
    </>
  );
}

const root = createRoot(document.getElementById('root'));
root.render(<Counter />);

Documentation

See https://react.dev/

API

See https://react.dev/reference/react