DateTimeOffset格式，并获得与moment.js相同的输出

// 获取当前的DateTimeOffset
const now = new Date();

// 获取当前的日期和时间
const year = now.getFullYear();
const month = now.getMonth() + 1;
const day = now.getDate();
const hours = now.getHours();
const minutes = now.getMinutes();
const seconds = now.getSeconds();

// 获取与UTC的偏移量（单位为分钟）
const offset = now.getTimezoneOffset();

// 构建DateTimeOffset字符串
const dateTimeOffset = `${year}-${month}-${day}T${hours}:${minutes}:${seconds}${getOffsetString(offset)}`;

// 输出结果
console.log(dateTimeOffset);

// 获取偏移量字符串
function getOffsetString(offset) {
  const sign = offset > 0 ? "-" : "+";
  const absOffset = Math.abs(offset);
  const hours = Math.floor(absOffset / 60);
  const minutes = absOffset % 60;
  return `${sign}${padZero(hours)}:${padZero(minutes)}`;
}

// 补零函数
function padZero(num) {
  return num.toString().padStart(2, "0");
}