JS---获取前n日、后n日数组

版权声明： https://blog.csdn.net/GoldenLegs/article/details/81947821

1.后n日数组

//d->今日格式化日期  n->后多少天
var getAftertime=function(d,n){ 
                var date = new Date();
                var nd=date.getDate()
                var nm=date.getMonth()+1
                var ny=date.getFullYear()
                d = new Date(d); //当前时间戳
                
                var timearray=[]
                for (var i=0;i<n ; i++)
                {       
                        var dd=d;
                        dd = +dd + 1000*60*60*24*i;
                        dd = new Date(dd);
                        var year = dd.getFullYear();
                        var mon = dd.getMonth()+1;
                        var day = dd.getDate();
                        if(year>ny || (year==ny && mon>nm) || (year==ny && mon==nm && day>nd-1)){  //后加n天大于当前日期,结束日期为当前日期
                            s = ny+"-"+(nm<10?('0'+nm):nm)+"-"+(nd-1<10?('0'+(nd-1)):nd-1);
                            break
                        }else{
                            s = year+"-"+(mon<10?('0'+mon):mon)+"-"+(day<10?('0'+day):day);
                            
                        }
                        timearray.push(s)
                }
                
                return timearray;
            }

2.前n日数组

//d->今日格式化日期  n->前多少天
var getBeforetime=function(d,n){  
                d = new Date(d);
                var timearray=[]
                for (var i=0;i<n ;i++ )
                {   
                        var dd=d
                        dd = +dd - 1000*60*60*24*i;
                        dd = new Date(dd);
                        var year = dd.getFullYear();
                        var mon = dd.getMonth()+1;
                        var day = dd.getDate();
                        s = year+"-"+(mon<10?('0'+mon):mon)+"-"+(day<10?('0'+day):day);
                        timearray.push(s)
                }
                return timearray.reverse();
            }