JS时间增加问题，求解啊

Question

if(newIntendingFinishTime.getHours()>17)
        {
           //周日的情况
           if(newIntendingFinishTime.getDay()==0)
           {
                //得到时间差值     得到超出的时间
                newHours = newIntendingFinishTime.getHours() - 9;
                //因为是18:00以后并且是周日所以天数+2
                finallyDD = newIntendingFinishTime.getDate()+2;
                finallyMM = newIntendingFinishTime.getMonth() + 1;
                //显示
                IntendingFinishTime = newIntendingFinishTime.getFullYear()+"-"+finallyMM+"-"+finallyDD+" "+newHours+":"+newIntendingFinishTime.getMinutes()+":"+newIntendingFinishTime.getSeconds(); 
            }
            //周六的情况
            else if(newIntendingFinishTime.getDay()==6)
            {
                
                //得到时间差值
                newHours = newIntendingFinishTime.getHours() - 9;
                //因为是18:00以后并且是周六所以天数+3
                finallyDD = newIntendingFinishTime.getDate() + 3;
                    
                finallyMM = newIntendingFinishTime.getMonth() + 1;
                //显示
                IntendingFinishTime = newIntendingFinishTime.getFullYear()+"-"+finallyMM+"-"+finallyDD+" "+newHours+":"+newIntendingFinishTime.getMinutes()+":"+newIntendingFinishTime.getSeconds(); 
            }
            //周一到周五的情况
            else
            {
                //得到时间差值
                newHours = newIntendingFinishTime.getHours() - 9;
                alert(newHours);
                //因为是18:00以后
                finallyDD = newIntendingFinishTime.getDate() + 1;
                alert(finallyDD);    
                finallyMM = newIntendingFinishTime.getMonth() + 1;
                //显示
                IntendingFinishTime = newIntendingFinishTime.getFullYear()+"-"+finallyMM+"-"+finallyDD+" "+newHours+":"+newIntendingFinishTime.getMinutes()+":"+newIntendingFinishTime.getSeconds(); 
            }
        }例如：今天是月末（包括闰年，平年一类的）我输入 小时 的时候可以让 年月日 正确的随着变化，我现在输入日的时候年月日可以正确的变化，比如 2月28日，1月31日 我输入+1天的时候会变成3月1日，2月1日，但是我现在输入小时的时候 要是1月31日会变成1月32日，请问怎么修改...

Answer 1

直接用Date类啊，
如果自己来算，那要什么闰年什么的搞死你

Answer 2

干嘛放着本身就有的东西不用.你自己写的东西,指不定又有什么莫名其妙的bug

Answer 3

同意三楼说的,楼主那样的判断容易出Bug的

Answer 4

这个真是，我都晕死了，我现在想改成你说的那样，给我个思路吧
我把else if(newIntendingFinishTime.getHours()>17)
        {
            debugger;
           //周日的情况
           if(newIntendingFinishTime.getDay()==0)
           {
                //得到时间差值     得到超出的时间
                newHours = newIntendingFinishTime.getHours() - 9;
                //因为是18:00以后并且是周日所以天数+2
                finallyDD = newIntendingFinishTime.getDate()+2;
                finallyMM = newIntendingFinishTime.getMonth() + 1;
                //显示
                IntendingFinishTimes = new Date(newIntendingFinishTime.getFullYear(),finallyMM,finallyDD,newHours,newIntendingFinishTime.getMinutes(),newIntendingFinishTime.getSeconds()); 
                IntendingFinishTime = IntendingFinishTimes.getFullYear()+"-"+IntendingFinishTimes.getMonth()+"-"+IntendingFinishTimes.getDate()+" "+IntendingFinishTimes.getHours()+":"+IntendingFinishTimes.getMinutes()+":"+IntendingFinishTimes.getSeconds();
            }
            //周六的情况
            else if(newIntendingFinishTime.getDay()==6)
            {
                
                //得到时间差值
                newHours = newIntendingFinishTime.getHours() - 9;
                //因为是18:00以后并且是周六所以天数+3
                finallyDD = newIntendingFinishTime.getDate() + 3;
                    
                finallyMM = newIntendingFinishTime.getMonth() + 1;
                //显示
                IntendingFinishTimes = new Date(newIntendingFinishTime.getFullYear(),finallyMM,finallyDD,newHours,newIntendingFinishTime.getMinutes(),newIntendingFinishTime.getSeconds()); 
                IntendingFinishTime = IntendingFinishTimes.getFullYear()+"-"+IntendingFinishTimes.getMonth()+"-"+IntendingFinishTimes.getDate()+" "+IntendingFinishTimes.getHours()+":"+IntendingFinishTimes.getMinutes()+":"+IntendingFinishTimes.getSeconds();
            }
            //周一到周五的情况
            else
            {
                //得到时间差值
                newHours = newIntendingFinishTime.getHours() - 9;
                //因为是18:00以后
                finallyDD = newIntendingFinishTime.getDate() + 1; 
                finallyMM = newIntendingFinishTime.getMonth() + 1;
                //显示
                IntendingFinishTimes = new Date(newIntendingFinishTime.getFullYear(),finallyMM,finallyDD,newHours,newIntendingFinishTime.getMinutes(),newIntendingFinishTime.getSeconds()); 
                IntendingFinishTime = IntendingFinishTimes.getFullYear()+"-"+IntendingFinishTimes.getMonth()+"-"+IntendingFinishTimes.getDate()+" "+IntendingFinishTimes.getHours()+":"+IntendingFinishTimes.getMinutes()+":"+IntendingFinishTimes.getSeconds();
            }
        }给他格式化成 日期类型，再给他显示 这样他显示的还有问题，应该怎么弄，貌似我有点跳不出来了

Answer 5

给个URL，自己看
http://www.jb51.net/article/16517.htm

Answer 6

Microsoft JScript 运行时错误: 对象不支持此属性或方法var yy = myDate.getFullYear();//获取完整的年份(4位,1970-????) 
var mm = myDate.getMonth()+1; //获取当前月份(0-11,0代表1月) 
var dd = myDate.getDate(); //获取当前日(1-31) 
var hh = myDate.getHours(); //获取当前小时数(0-23) 
var mi = myDate.getMinutes(); //获取当前分钟数(0-59) 
var ss = myDate.getSeconds(); //获取当前秒数(0-59) 
var newIntendingFinishTime = new Date(yy,mm-1,ddd,hhh,mi,ss);
aa = newIntendingFinishTime.dateAdd("d",1);
alert(aa);我这样写的 为什么报对象不知道这个方法，get的方法我都可以拿到

Answer 7

aa = newIntendingFinishTime.dateAdd("d",1);=>
aa = newIntendingFinishTime.setDate(+newIntendingFinishTime.getDate()+1);

Answer 8

dateAdd   这个方法我怎么没见过

Answer 9

我也纠结这个，那个一堆小船的教我了一个这个方法 让我去学习，我弄出一个
aa = newIntendingFinishTime.dateAdd("d",1);
玩意，他报错。

Answer 10

aa = newIntendingFinishTime.setDate(+newIntendingFinishTime.getDate()+1);
alert((new Date(aa)).toDateString());
你这样setDate当然是毫秒数。其实是对象的valueOf
其实setDate修改了本身对象
你直接newIntendingFinishTime.toDateString()就可以了