state_TypeScript

• e.target = e: React.ChangeEvent
  e.target.checked = e: React.ChangeEvent
  e.target.value = e:ChangeEvent
• onClick :
  1. (e: React.MouseEvent) => void ->
     || MouseEventHandler
  2. React.MouseEvent
• e.target.innerText : (event.target as HTMLLIElement).innerText
• onSubmit : (e: React.SyntheticEvent) 으로 e.preventDefault(); 사용가능
• onChange :
• useRef(null)
• setState : Dispatch<SetStateAction < boolean > >
• string 객체의 key값으로 사용하기val.a[key as keyof typeof val.a]
• children: React.ReactNode
• 함수: onSelect: (a: string) => void

참고블로그