React Native notes
Lifecycle
constructor(props) {
super(props);
}
render (){}
componentDidMount() {}
componentDidUpdate() {}
componentWillUnmount() {}
React with typoscript
# Make a new directory
$ mkdir react-typescript
# Change to this directory within the terminal
$ cd react-typescript
# Initialise a new npm project with defaults
$ npm init -y
# Install React dependencies
$ npm install react react-dom
# Make index.html and App.tsx in src folder
$ mkdir src
$ cd src
$ touch index.html
$ touch App.tsx
# Open the directory in your favorite editor
$ code .
then index.html
<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8" />
<meta http-equiv="X-UA-Compatible" content="IE=edge">
<title>React + TypeScript</title>
<meta name="viewport" content="width=device-width, initial-scale=1">
</head>
<body>
<div id="main"></div>
<script src="./App.tsx"></script>
</body>
</html># Install Parcel to our DevDependencies
$ npm i parcel-bundler -D
# Install TypeScript
$ npm i typescript -D
# Install types for React and ReactDOM
$ npm i -D @types/react @types/react-dom
add to pack.json
"scripts": {
"dev": "parcel src/index.html"
},
create Counter.tsx
import * as React from 'react';
export default class Counter extends React.Component {
state = {
count: 0
};
increment = () => {
this.setState({
count: (this.state.count += 1)
});
};
decrement = () => {
this.setState({
count: (this.state.count -= 1)
});
};
render () {
return (
<div>
<h1>{this.state.count}</h1>
<button onClick={this.increment}>Increment</button>
<button onClick={this.decrement}>Decrement</button>
</div>
);
}
}app.tsx
import * as React from 'react';
import { render } from 'react-dom';
import Counter from './Components/Counter';
render(<Counter />, document.getElementById('main'));run:
$ npm run dev