reactjsHow do I start using ReactJS?

ReactJS is a JavaScript library for building user interfaces. To start using ReactJS, you need to include the React library in your HTML page.

<script src="https://unpkg.com/react@16/umd/react.development.js" crossorigin></script>
<script src="https://unpkg.com/react-dom@16/umd/react-dom.development.js" crossorigin></script>

Next, you need to create an HTML element to render the React component. This can be done by creating a div element with an id attribute.

<div id="root"></div>

Then, you need to create a React component. This can be done by defining a JavaScript function that returns a React element.

function Hello() {
  return <h1>Hello World!</h1>;
}

Finally, you need to render the React component to the DOM. This can be done using the ReactDOM.render() method.

ReactDOM.render(<Hello />, document.getElementById('root'));

Output:

Hello World!

Code explanation

• <script>: Used to include the React library in the HTML page.
• <div>: Used to create an HTML element to render the React component.
• function: Used to define a React component.
• ReactDOM.render(): Used to render the React component to the DOM.

Helpful links

• React Documentation
• React Tutorial

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