js getdate少一位

const date = new Date();
const dayOfMonth = date.getDate().toString().padStart(2, '0');
console.log(dayOfMonth); // 输出格式为 "01" 到 "31"

const date = new Date();
const formatter = new Intl.DateTimeFormat('en-US', { day: '2-digit' });
const dayOfMonth = formatter.format(date);
console.log(dayOfMonth); // 输出格式为 "01" 到 "31"

function formatDate(date) {
  const day = date.getDate();
  return day < 10 ? `0${day}` : day;
}

const date = new Date();
console.log(formatDate(date)); // 输出格式为 "01" 到 "31"