JS 日期加多少天，减多少天

日期加天数

 function AddDayToDate(Time, days) {
        var a = new Date(Time)
        a = a.valueOf()
        a = a + days * 24 * 60 * 60 * 1000
        a = new Date(a)
        return a;
    }

日期减天数

function AddDayToDate(Time, days) {
var a = new Date(Time)
a = a.valueOf()
a = a - days * 24 * 60 * 60 * 1000
a = new Date(a)
return a;
}