js判断yyyy-mm-dd

function isValidDate(dateString) {
  const regex = /^\d{4}-\d{2}-\d{2}$/;
  if (!regex.test(dateString)) {
    return false;
  }
  const dateParts = dateString.split('-');
  const year = parseInt(dateParts[0], 10);
  const month = parseInt(dateParts[1], 10);
  const day = parseInt(dateParts[2], 10);
  if (month < 1 || month > 12) {
    return false;
  }
  const daysInMonth = new Date(year, month, 0).getDate();
  if (day < 1 || day > daysInMonth) {
    return false;
  }
  return true;
}

// 示例用法
console.log(isValidDate('2023-10-05')); // true
console.log(isValidDate('2023-13-05')); // false
console.log(isValidDate('2023-10-32')); // false
console.log(isValidDate('2023/10/05')); // false