简单的js日期处理方法

adddate是抄的网上的

var curFirstDay = new Date(inputDate.getYear(), inputDate.getMonth());

            //下月开始的第一天   

            var nextFirstDay = addDate('5', '1', curFirstDay);

            //本月最后一天   

            var curEndDay = new Date(nextFirstDay.getTime() - 1);

            var obj = curEndDay.getYear() + '-' + (curEndDay.getMonth() + 1) + '-' + curEndDay.getDate();



function addDate(type, NumDay, vdate) {

                var date = new Date(vdate);

                type = parseInt(type) //类型    

                var lIntval = parseInt(NumDay)//间隔   

                switch (type) {

                    case 6: //年   

                        date.setYear(date.getYear() + lIntval)

                        break;

                    case 7: //季度   

                        date.setMonth(date.getMonth() + (lIntval * 3))

                        break;

                    case 5: //月   

                        date.setMonth(date.getMonth() + lIntval)

                        break;

                    case 4: //天                    

                        date.setDate(date.getDate() + lIntval)

                        break;

                    case 3: //时   

                        date.setHours(date.getHours() + lIntval)

                        break;

                    case 2: //分   

                        date.setMinutes(date.getMinutes() + lIntval)

                        break;

                    case 1: //秒   

                        date.setSeconds(date.getSeconds() + lIntval)

                        break;

                    default:



                }

                return date;

            }