text: const message = "Hello World"
  
  const newMessage = message.padStart(15, "*").padEnd(20, "-")
  console.log(newMessage)
  
  // 案例
  const cardNumber = "321324234242342342341312"
  const lastFourCard = cardNumber.slice(-4)
  const finalCard = lastFourCard.padStart(cardNumber.length, "*")
  console.log(finalCard)
  