如何利用时刻获取最近3周的日期范围?

你可以使用 .startOf('week') .

var currentWeek = getWeekRange(0);
var lastWeek = getWeekRange(-1);
var weekBeforeLast = getWeekRange(-2);

var currentWeek2 = getWeekRange2(0);

console.log(currentWeek, lastWeek, weekBeforeLast, currentWeek2);

function getWeekRange(week = 0) {
  var weekStart = moment().add(week, 'weeks').startOf('week');
  
  return [...Array(7)].map((_, i) => 
    weekStart.clone().add(i, 'day').format('DD/MM/YYYY')
  );
}

function getWeekRange2(week = 0) {
 var weekStart = moment().add(week, 'weeks').startOf('week');
 var days = [];
 for (var i = 0; i < 7; i++) {
   days.push(weekStart.clone().add(i, 'day').format('DD/MM/YYYY'));
 }
 return days;
}

<script src="https://cdnjs.cloudflare.com/ajax/libs/moment.js/2.22.2/moment.js"></script>

澄清:

[...Array(7)] Array undefined 项目,即。 [undefined, undefined, ...] .map() .

未定义 ,我使用项目的 index 在数组中增加星期几--换句话说,数组的第一项, [undefined] ,将有一个 属于 0 ,所以我们要加上 0 天,并添加到一周结束。

你也可以这样做:

function getWeekRange(week = 0) {
  var weekStart = moment().add(week, 'weeks').startOf('week');
  var days = [];
  for (var i = 0; i < 7; i++) {
    days.push(weekStart.clone().add(i, 'day').format('DD/MM/YYYY'));
  }
  return days;
}

试试这个

moment().range(moment().subtract(3, 'weeks'), moment());

moment().subtract(3, 'weeks') this line will return the time before 3 weeks, moment() will return time now and range() will take the range from those two.

 let startOfWeek = moment().subtract(1, 'weeks').startOf('week').toDate().toISOString();
 let endOfWeek = moment().subtract(1, 'weeks').endOf('week').toDate().toISOString();
 console.log(startOfWeek, endOfWeek)