JS的Date日期增加天，月，年，星期

//create the date var myDate = new Date(); //add a day to the date myDate.setDate(myDate.getDate() + 1); //add a week myDate.setDate(myDate.getDate() + 7); //add a month myDate.setMonth(myDate.getMonth() + 1); //add a year myDate.setYear(myDate.getYear() + 1);