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ReactSimpleDestroyComponent.js

import React, { useState } from 'react'
import Overlay from './Overlay'

function App () {
  const [showOverlay, setOverlay] = useState(false)

  function triggerOverlay (event) {
    event.preventDefault()
    showOverlay ? setOverlay(false) : setOverlay(true)
  }
  return (
    <div className="App">
      <button onClick={triggerOverlay.bind(this)}>Munculkan overlay!</button>
      {showOverlay ? <Overlay /> : null}
    </div>
  )
}

export default App