Class components code example
Example 1: class in react
class App extends Component {
constructor() {
super()
this.state = {
name: "Sally",
age: 13
}
}
render() {
return (
<div>
<h1>{this.state.name}</h1>
<h3>{this.state.age} years old</h3>
</div>
)
}
}
Example 2: create react component class
class MyComponent extends React.Component{
constructor(props){
super(props);
};
render(){
return(
<div>
<h1>
My First React Component!
</h1>
</div>
);
}
};
Example 3: class app extends component syntax
class Welcome extends React.Component {
render() {
return <h1>Hello, {this.props.name}</h1>;
}
}
Example 4: functional component react
function Welcome(props) {
return <h1>Hello, {props.name}</h1>;
}
function App() {
return (
<div>
<Welcome name="Sara" /> <Welcome name="Cahal" /> <Welcome name="Edite" /> </div>
);
}
ReactDOM.render(
<App />,
document.getElementById('root')
);
Example 5: class to functional component react
class MyComponent extends React.Component {
state: {
name: 'Bob'
}
render() {
return (
<p>Hello, my name is {this.state.name}</p>
);
}
}
const MyComponent = () => {
const [name, setName] = React.useState('Bob');
return (<p>Hello, my name is {name}</p>);
}