JS实现：输入某一天日期，获取该日所在周的所有日期

initShowMeetDay(day){
                this.thisWeekDay = this.getWeekDays(day)
            },
            getWeekDays(input_day){
                let oneDayTime = 1000 * 60 * 60 * 24 
                let today = new Date(input_day)
                // 若那一天是周末时，则强制赋值为7
                let todayDay = today.getDay() || 7 
                let startDate = new Date(
                    today.getTime() - oneDayTime * (todayDay - 1)
                )
                let dateList = new Array()
                for(let i = 0; i < 7; i++){
                    let temp = new Date(startDate.getTime() + i * oneDayTime)
                    let year = temp.getFullYear()
                    let month = temp.getMonth() + 1
                    let day = temp.getDate()
                    // dateList[i] = `${year}-${month}-${day}` 
                    dateList[i] = `${day}` 
                }
                return dateList;
            }