fullstackopen/part1/1.6-1.11-unicafe/src/App.js

import React, { useState } from 'react'

const App = () => {
  // save clicks of each button to its own state
  const [good, setGood] = useState(0)
  const [neutral, setNeutral] = useState(0)
  const [bad, setBad] = useState(0)

  return (
    <div>
      <h1>Give feedback</h1>
      <button onClick={() => setGood(good + 1)}>good</button>
      <button onClick={() => setNeutral(neutral + 1)}>neutral</button>
      <button onClick={() => setBad(bad + 1)}>bad</button>
      <h1>Statistic</h1>
      <p>Good: {good}</p>
      <p>Neutral: {neutral}</p>
      <p>Bad: {bad}</p>
    </div>
  )
}

export default App