count 증감코드(재사용가능코드) 수정본

import React, {useState} from 'react';

const Counter = () =>{

const [count, setCount] = useState(0);



const onIncrease = () => {
    setCount((prev)=> prev+1))
}

const onDecrease = () => {
    setCount((prev)=> prev-1))
}

return (
    <div>
        <h2>{count}</h2>
        <button onClick={onIncrease}>+</button>
        <button onClick={onDecrease}>-</button>
    </div>
)

};

export default Counter;

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