What is React

• A user interface Library.

1. What is a component?

• A small piece of code that fills a certain part of the user interface.

1. What is the dataflow of React?

• One way dataflow.
• Data flows down.

1. How do we make a React element a DOM element?

• By using a JavaScript function.

import React from ‘react’;
import ReactDOM from ‘react-dom’;
import Header from ‘./Header’;
import Content from ‘./Content’;
import Footer from ‘./Footer’;

Function App(){
	<div className=’app’>
		<Header />
		<Content />
		<Footer />
	</div>
}

ReactDOM.redner(
	<App />,
	document.getElementById(‘root’)
);

1. React is a User Interface _____

• Library
• Agnostic User Interface Library.

1. Which direction does data flow in React?

• Data flows downward.
  

1. Every component manages its own __

• State and pass it down to its children.

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