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CongAn/获得一年的第几周（跨年的周为第一周）.js

Created May 20, 2022 03:16
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获得一年的第几周（跨年的周为第一周）.js
const date = moment()
const firstDayOfYear = moment(date.format('YYYY-01-01'))
// 获得第多少周（跨年周算第一周）
const weeks = (
// 获得第多少天
date.diff(firstDayOfYear, 'days') -
// 减去第一周天数
(7 - firstDayOfYear.weekday()) -
// 减去该时间当前周的天数
date.weekday()
) / 7 + 2
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