如何获取时差时刻js？

function getTimezoneOffset() {
  var d = new Date();
  var timezoneOffset = d.getTimezoneOffset();
  var hours = Math.abs(Math.floor(timezoneOffset / 60));
  var minutes = Math.abs(timezoneOffset % 60);
  
  // 判断正负时区
  var sign = timezoneOffset > 0 ? '-' : '+';
  
  // 格式化时区差异
  var formattedOffset = sign + addLeadingZero(hours) + ':' + addLeadingZero(minutes);
  
  return formattedOffset;
}

function addLeadingZero(number) {
  return number < 10 ? '0' + number : number;
}

var timezoneOffset = getTimezoneOffset();
console.log('当前时区偏移：' + timezoneOffset);