获取当月周六周日日期

getWeeks() {

            const date = new Date()

            const currentYear = date.getFullYear()

            let currentMonth = date.getMonth() + 1

            if (currentMonth < 10) currentMonth = '0' + currentMonth

            const firstDate = new Date(`${currentYear}-${currentMonth}-01`)

            const day = parseInt(firstDate.getDay() === 0 ? 7 : firstDate.getDay())

            const days = new Date(currentYear, currentMonth, 0).getDate()

            // 计算当月周数

            let weeks

            const temp = days % 7

            if (7 - day >= temp) {

                weeks = parseInt(days / 7) + 1

            } else {

                weeks = parseInt(days / 7) + 2

            }

            const lastDay = new Date(`${currentYear}-${currentMonth}-${days}`).getDay()

            if (lastDay === 0) {

                weeks--

            }

            // 提取本月的周六和周末

            let freeDays = []

            if (day <= 6) {

                freeDays.push(7 - day)

                freeDays.push(1 + (7 - day))

            }

            for (let i = 1, j = weeks - 1; i < j; i++) {

                const last = freeDays[freeDays.length - 1]

                freeDays.push(last + 6)

                freeDays.push(last + 7)

            }

            if (lastDay === 0) {

                const last = freeDays[freeDays.length - 1]

                freeDays.push(last + 6)

                freeDays.push(last + 7)

            }

            let result = []

            freeDays.forEach(m => {

                result.push(`${currentYear}-${currentMonth}-${m < 10 ? ('0' + m) : m}`)

            })

            return result

        }