how to write statefull class in react
import React, {Component} from 'react' class Pigeons extends Component { constructor() { super() this.state = { pigeons: [] } } render() { return ( <div> <p>Look at all the pigeons spotted today!</p> <ul> {this.state.pigeons.map(pigeonURL => { return <li><img src={pigeonURL} /></li> })} </ul> </div> ) } }
state with react functions
class Example extends React.Component { constructor(props) { super(props); this.state = { count: 0 }; } render() { return ( <div> <p>You clicked {this.state.count} times</p> <button onClick={() => this.setState({ count: this.state.count + 1 })}> Click me </button> </div> ); } }
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