您可以在下面找到一个快速而肮脏的解决方案，尽管我可能会为此使用。这个逻辑也是一样的。检查这一天是今天还是昨天。如果是，打印单词和时间。如果不是，只打印日期:

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function isSameDay(date1, date2) {
  return (date1.getDate() === date2.getDate() &&
    date1.getMonth() === date2.getMonth() &&
    date1.getFullYear() === date2.getFullYear())
}

function formatDate(d) {
  const today = new Date()
  const yesterday = new Date(today)
  yesterday.setDate(yesterday.getDate() - 1)
  const timeOptions = {
    hour: '2-digit',
    minute: '2-digit'
  }

  if (isSameDay(d, today)) {
    // it's today
    return `Today at ${d.toLocaleTimeString(undefined, timeOptions)}`
  }

  if (isSameDay(d, yesterday)) {
    // it was yesterday
    return `Yesterday at ${d.toLocaleTimeString(undefined, timeOptions)}`
  }

  return d.toLocaleDateString()
}

// examples
console.log({
  'Now': formatDate(new Date()),
  // geez, this yesterday date is ugly :D
  'Yesterday': formatDate(new Date(new Date().setDate(new Date().getDate() - 1))),
  'On the 5th of January': formatDate(new Date('2021-01-05 11:54'))
})