获取本周本年本月时间

 function getCurrentdate() {
                var startStop = new Array();
                var currentDate = new Date();
                var currentMonth = currentDate.getMonth();
                var currentYear = currentDate.getFullYear();
                var firstDay = new Date(currentYear, currentMonth, 1);
                if (currentMonth == 11) {
                    currentYear++;
                    currentMonth = 0;
                } else {
                    currentMonth++;
                }
                var week = currentDate.getDay();
                var month = currentDate.getDate();
                var minusDay = week != 0 ? week - 1 : 6;
                var millisecond = 1000 * 60 * 60 * 24;

                var nextMonthDayOne = new Date(currentYear, currentMonth, 1);
                var lastDay = new Date(nextMonthDayOne.getTime() - millisecond);

                var monday = new Date(new Date(currentDate.toLocaleDateString()).getTime() - (minusDay *
                    millisecond));
                var sunday = new Date(new Date(monday.toLocaleDateString()).getTime() + (6 * millisecond));

                var currentYearFirstDate = new Date(currentYear, 0, 1);
                var currentYearLastDate = new Date(currentYear, 11, 31);
                switch (nowTime) {
                    case 'year':
                        startStop.push(currentYearFirstDate);
                        startStop.push(currentYearLastDate);
                        break;
                    case 'month':
                        startStop.push(firstDay);
                        startStop.push(lastDay);
                        break;
                    default:
                        startStop.push(monday);
                        startStop.push(sunday);
                        break;
                }
                return startStop;
            };