如何获取2天之间的值(天数

function getDaysBetweenDates(startDate, endDate) {
  // 获取时间戳
  var startTimestamp = new Date(startDate).getTime();
  var endTimestamp = new Date(endDate).getTime();

  // 计算天数差
  var timeDiff = Math.abs(endTimestamp - startTimestamp);
  var daysDiff = Math.ceil(timeDiff / (1000 * 3600 * 24));

  return daysDiff;
}

// 示例用法
var startDate = '2022-01-01';
var endDate = '2022-01-03';
var daysBetweenDates = getDaysBetweenDates(startDate, endDate);
console.log(daysBetweenDates); // 输出结果为 2