simple counter react
import React, { useState } from 'react';
import ReactDOM from 'react-dom';
export const Counter = (props) => {
const [count, setCount ] = useState(0)
return (
<div id="mainArea">
button count: <span>{count}</span>
<button id="mainButton" onClick={() => {setCount(count + 1)}}>Increase</button>
</div>
);
}
ReactDOM.render(
<Counter />,
document.getElementById('root')
);simple counter react
import React from 'react';
import ReactDOM from 'react-dom';
class Counter extends React.Component {
constructor(props) {
super(props);
this.state = {
count : 0
}
this.increment = this.increment.bind(this);
}
increment() {
this.setState({count:this.state.count+1});
}
render() {
return (
<div id="mainArea">
button count: <span>{this.state.count}</span>
<button onClick={this.increment} id="mainButton">Increase</button>
</div>
);
}
}
ReactDOM.render(
<Counter />,
document.getElementById('root')
);Copyright © 2021 Codeinu
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