let weekOfday = moment(date).format(‘E’);//计算今天是这周第几天
// 1 0 -6
// 2 1 -5
// 3 2 -4
// 4 3 -3
// 5 4 -2
// 6 5 -1
// 7 6 0
let last_monday = moment(date).subtract(weekOfday-1, ‘days’).format(‘MM/DD’);//周一日期
let last_sunday = moment(date).subtract(weekOfday-7, ‘days’).format(‘MM/DD’);//周日日期