js获取本周的时间及星期几

  getData() {
      let _that = this
      var currentFirstDate
      var formatDate = function (date) {
        var year = date.getFullYear()
        var month = date.getMonth() + 1
        var day = date.getDate() + ''
        var week = ['Sun', 'Mon', 'Tues', 'Wed', 'Thurs', 'Fri', 'Sat'][date.getDay()]
        return {
          year,
          month,
          day,
          week,
        }
      }
      var addDate = function (date, n) {
        date.setDate(date.getDate() + n)
        return date
      }
      var setDate = function (date) {
        var week = date.getDay() - 1
        date = addDate(date, week * -1)
        currentFirstDate = new Date(date)

        for (var i = 0; i < 7; i++) {
          _that.dataList.push(formatDate(i == 0 ? date : addDate(date, 1)))
        }
      }
      setDate(new Date())
    },

返回的数据结构

[{"year":2022,"month":5,"day":"16","week":"Mon"},{"year":2022,"month":5,"day":"17","week":"Tues"},{"year":2022,"month":5,"day":"18","week":"Wed"},{"year":2022,"month":5,"day":"19","week":"Thurs"},{"year":2022,"month":5,"day":"20","week":"Fri"},{"year":2022,"month":5,"day":"21","week":"Sat"},{"year":2022,"month":5,"day":"22","week":"Sun"}]

获取今天是周几

    getDataToday() {
      return ['Sun', 'Mon', 'Tues', 'Wed', 'Thurs', 'Fri', 'Sat'][new Date().getDay()]
    },