效果如下：
image.png
需要先 npm i moment
再import moment from 'moment'
- 获取当前年
const curYear = new Date().getFullYear()
2.获取当前周
const curWeek = moment().format("W")
3.获取当前周的开始日期和结束日期
let weekOfDay = parseInt(moment().format('E'));//计算今天是这周第几天
let last_monday = moment().startOf('day').subtract(weekOfDay - 1, 'days').toDate();//周一日期
let last_sunday = moment().startOf('day').subtract(weekOfDay - 7, 'days').toDate();//周日日期
4.获取某年某周的开始日期和结束日期
const year = 2022
const week = 29
let weekdays = []
weekdays[0] = moment(`${year}-${week}`,'GGGG-WW').format('YYYY.MM.DD')
weekdays[1] = moment(`${year}-${week}`,'GGGG-WW').weekday(7).format('YYYY.MM.DD')
5.上周下周日期变化
// 日期格式获取
const getLastWeek = (i) => {
let weekOfDay = parseInt(moment().format('E'));//计算今天是这周第几天
let last_monday = moment().startOf('day').subtract(weekOfDay + 7 * i - 1, 'days').toDate();//周一日期
let last_sunday = moment().startOf('day').subtract(weekOfDay + 7 * (i - 1), 'days').toDate();//周日日期
week = moment(last_monday).format('W') //获取此日期所在周
year = moment(last_monday).format('Y') //获得此日期所在年
return [moment(last_monday).format('YYYY.MM.DD'), moment(last_sunday).format('YYYY.MM.DD')]
}
// 上周
const beforeWeek = () => {
weekCount++
weekdays = getLastWeek(weekCount.value)
}
// 下周
const nextWeek = () => {
weekCount--
weekdays = getLastWeek(weekCount.value)
}
