jquery日历控件实现方法分享(4)

function init_day_numbers(year, month) {
            var maxday = getmaxDay(year, month),
                firstWeek,beforeNumber,
                startIndex = beforeNumber = firstWeek = getFirstWeek(year, month),
                afterNumber = 35 - maxday - beforeNumber,
                lastMonthMaxDay = getMaxDayByLastMonth(year, month),
                nextMonthMaxDay = getMaxDayByNextMonth(year, month),
                Edge = getLastAndNextDate(year, month);
            var default_html = '';
            for (var k = 0; k < 35; k++) {
                default_html += '<div><span>' + '' + '</span></div>';
            };
            $('.days').html(default_html);
            for (var s = 1; s <= maxday; s++) {
                $('.day-number').eq(startIndex).text(s);
                $('.day').eq(startIndex).attr('data-date', year + '-' + month + '-' + s);
                if (s == _date.day && year == _date.year && month == _date.month) {
                    $('.day').eq(startIndex).addClass('today');
                }
                startIndex++;
            };
            for (var k = 0; k < beforeNumber; k++) {
                var realDay = lastMonthMaxDay - beforeNumber + k + 1;
                $('.day-number').eq(k).text(realDay);
                $('.day-number').eq(k).addClass('last-month');
                $('.day').eq(k).attr('data-date', Edge.lastY + '-' + Edge.lastM + '-' + realDay);
            };
            for (var l = 1; l <= afterNumber; l++) {
                var _index = beforeNumber + maxday + (l - 1);
                $('.day-number').eq(_index).text(l);
                $('.day-number').eq(_index).addClass('next-month');
                $('.day').eq(_index).attr('data-date', Edge.nextY + '-' + Edge.nextM + '-' + l);
            }
        }

function getLastAndNextDate(year, month) {
            var lastM = month - 1 > 0 ? month - 1 : 12,
                lastY = lastM == 12 ? year - 1 : year,
                nextM = month + 1 > 12 ? 1 : month + 1,
                nextY = nextM == 1 ? year + 1 : year;
            return {
                lastM: lastM,
                lastY: lastY,
                nextM: nextM,
                nextY: nextY
            };
        }