<script language="JavaScript">
<!--

function PowerDate(timeString)
{
this.date=null;
if(timeString!="") this.date=new Date(timeString);
else this.date=new Date();
this.isFmtZero=false;
this.weekArr=[["星期日","星期一","星期二","星期三","星期四","星期五","星期六"],
["SUN","MON","TUR","WED","THU","FRI","SAT"]];
this.monthArr=["JAN","FEB","MAR","APR","MAY","JUN","JUL","AUG","SEP","OCT","NOV","DEC"];

this.getFullYear=function()
{
return this.date.getFullYear();
};

this.getYear=function()
{
return this.date.getYear();
};

this.getMonth=function()
{
var mm=this.date.getMonth()+1;
if(this.isFmtZero==true && mm<10)
return "0"+mm;
else return mm;
};

this.getDay=function()
{
var dd=this.date.getDate();
if(this.isFmtZero==true && dd<10)
return "0"+dd;
else return dd;
};

this.getHour=function()
{
var hh=this.date.getHours();
if(this.isFmtZero==true && hh<10)
return "0"+hh;
else return hh;
};

this.getMinute=function()
{
var mi=this.date.getMinutes();
if(this.isFmtZero==true && mi<10)
return "0"+mi;
else return mi;
};

this.getSecond=function()
{
var ss=this.date.getSeconds();
if(this.isFmtZero==true && ss<10)
return "0"+ss;
else return ss;
};

this.getMillisecond=function()
{
var ss=this.date.getMilliseconds();
if(this.isFmtZero==true && ss<10)
return "00"+ss;
else if(this.isFmtZero==true && ss<100)
return "0"+ss;
else return ss;
};

this.getWeek=function()
{
return this.date.getDay();
};

this.setIsFmtZero=function(val)
{
this.isFmtZero=val;
};

/**//*
功能:根据输入表达式返回日期字符串
参数:dateFmt:字符串,由以下结构组成 yy:长写年,YY:短写年mm:数字月,MM:英文月,dd:日,hh:时,mi:分,ss秒,ms:毫秒,we:汉字星期,WE:英文星期.
isFmtZero:布尔值,true:需要用0补位,false:不需要用0补位
*/

this.getString=function(dateFmt)
{
if(typeof(dateFmt) != "string" )
throw(new Error(-1, 'getString()方法需要字符串类型参数!'));
var str=dateFmt;
str=str.replace(/yy/g,this.getFullYear());
str=str.replace(/YY/g,this.getYear());
str=str.replace(/mm/g,this.getMonth());
str=str.replace(/MM/g,this.monthArr[this.getMonth()-1]);
str=str.replace(/dd/g,this.getDay());
str=str.replace(/hh/g,this.getHour());
str=str.replace(/mi/g,this.getMinute());
str=str.replace(/ss/g,this.getSecond());
str=str.replace(/ms/g,this.getMillisecond());
str=str.replace(/we/g,this.weekArr[0][this.getWeek()]);
str=str.replace(/WE/g,this.weekArr[1][this.getWeek()]);
return str;
};
//返回N天前(后)的日期
//返回与另一日期之间的时间间隔
//
}

PowerDate.prototype.fmtWithZero= function()
{

}
var d= new PowerDate("");
d.setIsFmtZero(true);
alert(d.getString("yy-mm-dd hh:mi:ss.ms"));
//-->
</script>
<body>
</body>


/**//*
******************************************
日期函数扩充
******************************************
*/



/**//*
===========================================
//转换成大写日期(中文)
===========================================
*/
Date.prototype.toCase = function()


{
var digits= new Array('零','一','二','三','四','五','六','七','八','九','十','十一','十二');
var unit= new Array('年','月','日','点','分','秒');

var year= this.getYear() + "";
var index;
var output="";

////////得到年
for (index=0;index<year.length;index++ )


{
output += digits[parseInt(year.substr(index,1))];
}
output +=unit[0];

///////得到月
output +=digits[this.getMonth()] + unit[1];

///////得到日
switch (parseInt(this.getDate() / 10))


{
case 0:
output +=digits[this.getDate() % 10];
break;
case 1:
output +=digits[10] + ((this.getDate() % 10)>0?digits[(this.getDate() % 10)]:"");
break;
case 2:
case 3:
output +=digits[parseInt(this.getDate() / 10)] + digits[10] + ((this.getDate() % 10)>0?digits[(this.getDate() % 10)]:"");
default:

break;
}
output +=unit[2];

///////得到时
switch (parseInt(this.getHours() / 10))


{
case 0:
output +=digits[this.getHours() % 10];
break;
case 1:
output +=digits[10] + ((this.getHours() % 10)>0?digits[(this.getHours() % 10)]:"");
break;
case 2:
output +=digits[parseInt(this.getHours() / 10)] + digits[10] + ((this.getHours() % 10)>0?digits[(this.getHours() % 10)]:"");
break;
}
output +=unit[3];

if(this.getMinutes()==0&&this.getSeconds()==0)


{
output +="整";
return output;
}

///////得到分
switch (parseInt(this.getMinutes() / 10))


{
case 0:
output +=digits[this.getMinutes() % 10];
break;
case 1:
output +=digits[10] + ((this.getMinutes() % 10)>0?digits[(this.getMinutes() % 10)]:"");
break;
case 2:
case 3:
case 4:
case 5:
output +=digits[parseInt(this.getMinutes() / 10)] + digits[10] + ((this.getMinutes() % 10)>0?digits[(this.getMinutes() % 10)]:"");
break;
}
output +=unit[4];

if(this.getSeconds()==0)


{
output +="整";
return output;
}

///////得到秒
switch (parseInt(this.getSeconds() / 10))


{
case 0:
output +=digits[this.getSeconds() % 10];
break;
case 1:
output +=digits[10] + ((this.getSeconds() % 10)>0?digits[(this.getSeconds() % 10)]:"");
break;
case 2:
case 3:
case 4:
case 5:
output +=digits[parseInt(this.getSeconds() / 10)] + digits[10] + ((this.getSeconds() % 10)>0?digits[(this.getSeconds() % 10)]:"");
break;
}
output +=unit[5];



return output;
}



/**//*
===========================================
//转换成农历
===========================================
*/
Date.prototype.toChinese = function()


{
//暂缺
}


/**//*
===========================================
//是否是闰年
===========================================
*/
Date.prototype.isLeapYear = function()


{
return (0==this.getYear()%4&&((this.getYear()%100!=0)||(this.getYear()%400==0)));
}


/**//*
===========================================
//获得该月的天数
===========================================
*/
Date.prototype.getDayCountInMonth = function()


{
var mon = new Array(12);

mon[0] = 31; mon[1] = 28; mon[2] = 31; mon[3] = 30; mon[4] = 31; mon[5] = 30;
mon[6] = 31; mon[7] = 31; mon[8] = 30; mon[9] = 31; mon[10] = 30; mon[11] = 31;

if(0==this.getYear()%4&&((this.getYear()%100!=0)||(this.getYear()%400==0))&&this.getMonth()==2)


{
return 29;
}
else


{
return mon[this.getMonth()];
}
}


/**//*
===========================================
//获得日期为星期几 (0为星期天)
===========================================
*/
Date.prototype.weekOfDay = function()


{
return this.getDay();
}


/**//*
===========================================
//日期比较
===========================================
*/
Date.prototype.Compare = function(objDate)


{
if(typeof(objDate)!="object" && objDate.constructor != Date)


{
return -2;
}

var d = this.getTime() - objDate.getTime();

if(d>0)


{
return 1;
}
else if(d==0)


{
return 0;
}
else


{
return -1;
}
}


/**//*
===========================================
//格式化日期格式
===========================================
*/
Date.prototype.toString = function()


{
if(arguments.length>0)


{
var formatStr = arguments[0];
var str = formatStr;

str=str.replace(/yyyy|YYYY/,this.getFullYear());
str=str.replace(/yy|YY/,(this.getFullYear() % 100)>9?(this.getFullYear() % 100).toString():"0" + (this.getFullYear() % 100));

str=str.replace(/MM/,this.getMonth()+1>9?(this.getMonth()+1).toString():"0" + (this.getMonth()+1));
str=str.replace(/M/g,(this.getMonth()+1).toString());

str=str.replace(/dd|DD/,this.getDate()>9?this.getDate().toString():"0" + this.getDate());
str=str.replace(/d|D/g,this.getDate());

str=str.replace(/hh|HH/,this.getHours()>9?this.getHours().toString():"0" + this.getHours());
str=str.replace(/h|H/g,this.getHours());

str=str.replace(/mm/,this.getMinutes()>9?this.getMinutes().toString():"0" + this.getMinutes());
str=str.replace(/m/g,this.getMinutes());

str=str.replace(/ss|SS/,this.getSeconds()>9?this.getSeconds().toString():"0" + this.getSeconds());
str=str.replace(/s|S/g,this.getSeconds());

return str;

}
else


{
return this.toLocaleString();
}
}


/**//*
===========================================
//由字符串直接实例日期对象
===========================================
*/
Date.prototype.instanceFromString = function(str)


{
return new Date(str.replace(/-/g, "\/"));
}


/**//*
===========================================
//得到日期年月日等加数字后的日期
===========================================
*/
Date.prototype.dateAdd = function(interval,number)


{
var date = this;

switch(interval)

{
case "y" :
date.setFullYear(date.getFullYear()+number);
return date;

case "q" :
date.setMonth(date.getMonth()+number*3);
return date;

case "m" :
date.setMonth(date.getMonth()+number);
return date;

case "w" :
date.setDate(date.getDate()+number*7);
return date;
case "d" :
date.setDate(date.getDate()+number);
return date;

case "h" :
date.setHours(date.getHours()+number);
return date;

case "m" :
date.setMinutes(date.getMinutes()+number);
return date;

case "s" :
date.setSeconds(date.getSeconds()+number);
return date;

default :
date.setDate(d.getDate()+number);
return date;
}
}


/**//*
===========================================
//计算两日期相差的日期年月日等
===========================================
*/
Date.prototype.dateDiff = function(interval,o)


{
//判断o是否为日期对象
if(o&&o.constructor==Date)


{
//判断是否interval是否是字符串对象
if (interval&&interval.constructor==String)


{

var _start= this.getTime();
var _end= o.getTime();

var number= _end - _start;

var iOut = -1;

switch (interval.charAt(0))


{
case 'y':case 'Y'://year
iOut = o.getFullYear() - this.getFullYear();
break;
case 'm':case 'M'://month
iOut = (o.getFullYear() - this.getFullYear()) * 12 + (o.getMonth()-this.getMonth());
break;
case 'q':case 'Q'://quarter
iOut = ((o.getFullYear() - this.getFullYear()) * 12 + (o.getMonth()-this.getMonth()))/3;
break;
case 'd':case 'D'://day
iOut = parseInt(number / 86400000) ;
break;
case 'w':case 'W'://week
iOut = parseInt(number / 86400000/7) ;
break;
case 'h':case 'H'://hour
iOut = parseInt(number / 3600000 ) ;
break;
case 'n':case 'N'://minute
iOut = parseInt(number / 60000 ) ;
break;
case 's': case 'S'://second
iOut = parseInt(number / 1000 ) ;
break;
case 't':case 'T'://microsecond
iOut = parseInt(number);
break;
default:
iOut = -1;
}

return iOut;
}
}

return -1

}



/**//*
===========================================
//得到日期的组成部分
===========================================
*/
Date.prototype.datePart = function(interval)


{

if(interval==null)


{
return -1;
}

if(/^(yy|yyyy)$/.test(interval))


{
return this.getFullYear();
}

if(/^(qq|q)$/.test(interval))


{
return Math.ceil((this.getMonth()+1) / 4);
}

if(/^(mm|m)$/.test(interval))


{
return this.getMonth();
}

if(/^(dd|d)$/.test(interval))


{
return this.getDate();
}

if(/^(dw)$/.test(interval))


{
return this.getDay();
}

if(/^(hh|h)$/.test(interval))


{
return this.getHours();
}

if(/^(mi|n)$/.test(interval))


{
return this.getMinutes();
}

if(/^(ss|s)$/.test(interval))


{
return this.getSeconds();
}

if(/^(ms)$/.test(interval))


{
return this.getMilliseconds();
}

//缺少日期的第几周,第几天

return -1;
}

**
*功能:返回格式化后的日期字符串
*参数:formatStr为格式字符串,其中表示形式如下列表
*“ddd”-汉字星期几
*“yyyy”-四位数年份
*“MM”-两位数月份
*“dd”-两位数日期
*“hh”-两位数小时
*“mm”-两位数分钟
*“ss”-两位数秒数
*“y”-年份
*“M”-月份
*“d”-日期
*“h”-小时
*“m”-分钟
*“s”-秒数
*/

Date.prototype.format = function (formatStr)
{
var WEEK = new Array("星期日","星期一","星期二","星期三","星期四","星期五","星期六");
var s = formatStr;


s = s.replace(/d
{3}/g, WEEK[this.getDay()]);


s = s.replace(/y
{4}/g, this.getFullYear());

s = s.replace(/M
{2}/g, (this.getMonth()+1)<10 ? "0"+(this.getMonth()+1) : (this.getMonth()+1));

s = s.replace(/d
{2}/g, this.getDate()<10 ? "0"+this.getDate() : this.getDate());

s = s.replace(/h
{2}/g, this.getHours()<10 ? "0"+this.getHours() : this.getHours());

s = s.replace(/m
{2}/g, this.getMinutes()<10 ? "0"+this.getMinutes() : this.getMinutes());

s = s.replace(/s
{2}/g, this.getSeconds()<10 ? "0"+this.getSeconds() : this.getSeconds());


s = s.replace(/y
{1}/g, this.getFullYear());

s = s.replace(/M
{1}/g, this.getMonth() + 1);

s = s.replace(/d
{1}/g, this.getDate());

s = s.replace(/h
{1}/g, this.getHours());

s = s.replace(/m
{1}/g, this.getMinutes());

s = s.replace(/s
{1}/g, this.getSeconds());

return(s);
}


zhaoxiaoyang(梅雪香@深圳)
整理完毕,发出来大家测测,有意见和建议快提,我好快改

另:计算两个日期的差的功能,我不清楚该如何设计.请大家发表高论!

<script language="JavaScript">
<!--

function PowerDate(timeString)
{
this.date=null;
if(timeString!="") this.date=new Date(timeString);
else this.date=new Date();
this.isFmtZero=false;
this.weekArr=[["星期日","星期一","星期二","星期三","星期四","星期五","星期六"],
["SUN","MON","TUR","WED","THU","FRI","SAT"]];
this.monthArr=["JAN","FEB","MAR","APR","MAY","JUN","JUL","AUG","SEP","OCT","NOV","DEC"];

this.getFullYear=function()
{
return this.date.getFullYear();
};

this.getYear=function()
{
return this.date.getYear();
};

this.getMonth=function()
{
var mm=this.date.getMonth()+1;
if(this.isFmtZero==true && mm<10)
return "0"+mm;
else return mm;
};

this.getDay=function()
{
var dd=this.date.getDate();
if(this.isFmtZero==true && dd<10)
return "0"+dd;
else return dd;
};

this.getHour=function()
{
var hh=this.date.getHours();
if(this.isFmtZero==true && hh<10)
return "0"+hh;
else return hh;
};

this.getMinute=function()
{
var mi=this.date.getMinutes();
if(this.isFmtZero==true && mi<10)
return "0"+mi;
else return mi;
};

this.getSecond=function()
{
var ss=this.date.getSeconds();
if(this.isFmtZero==true && ss<10)
return "0"+ss;
else return ss;
};

this.getMillisecond=function()
{
var ss=this.date.getMilliseconds();
if(this.isFmtZero==true && ss<10)
return "00"+ss;
else if(this.isFmtZero==true && ss<100)
return "0"+ss;
else return ss;
};

this.getWeek=function()
{
return this.date.getDay();
};

this.setIsFmtZero=function(val)
{
this.isFmtZero=val;
};

/**//*
功能:根据输入表达式返回日期字符串
参数:dateFmt:字符串,由以下结构组成 yy:长写年,YY:短写年mm:数字月,MM:英文月,dd:日,hh:时,mi:分,ss秒,ms:毫秒,we:汉字星期,WE:英文星期.
isFmtZero:布尔值,true:需要用0补位,false:不需要用0补位
*/

this.getString=function(dateFmt)
{
if(typeof(dateFmt) != "string" )
throw (new Error(-1, 'getString()方法需要字符串类型参数!'));
var str=dateFmt;
str=str.replace(/yy/g,this.getFullYear());
str=str.replace(/YY/g,this.getYear());
str=str.replace(/mm/g,this.getMonth());
str=str.replace(/MM/g,this.monthArr[this.getMonth()-1]);
str=str.replace(/dd/g,this.getDay());
str=str.replace(/hh/g,this.getHour());
str=str.replace(/mi/g,this.getMinute());
str=str.replace(/ss/g,this.getSecond());
str=str.replace(/ms/g,this.getMillisecond());
str=str.replace(/we/g,this.weekArr[0][this.getWeek()]);
str=str.replace(/WE/g,this.weekArr[1][this.getWeek()]);
return str;
};


/**//* 名称 : dateAfterDays
* 功能 : 返回与某日期相距N天(N个24小时)的日期
* 参数 : num number类型 可以为正负整数或者浮点数
* 返回 : 新的日期
* 方法 : powerDate.dateAfterDays(num);
*/

this.dateAfterDays=function(num)
{
if(typeof(num)!="number") throw new Error(-1,"dateAfterDays(num)参数为数值类型.");
var dd = this.date.valueOf();
dd += num*24*3600*1000;
this.date=new Date(dd);
return this;
};


/**//* 名称 : dateAfterSeconds
* 功能 : 返回与某日期相距N秒的日期
* 参数 : num number类型 可以为正负整数或者浮点数
* 返回 : 新的日期
* 方法 : powerDate.dateAfterDays(num);
*/

this.dateAfterSeconds=function(num)
{
if(typeof(num)!="number") throw new Error(-1,"dateAfterDays(num)参数为数值类型.");
var dd = this.date.valueOf();
dd += num*1000;
this.date=new Date(dd);
return this;
};

//判断是否是闰年

this.isLeapYear = function ()
{
var year = this.getFullYear();
return (0==year%4 && ((year % 100 != 0)||(year % 400 == 0)));
};

//返回该月天数

this.getDaysOfMonth = function ()
{
return (new Date(this.getFullYear(),this.getMonth(),0)).getDate();
};

//转换成大写日期(中文)

this.getChinaDate = function()
{
var year = this.getFullYear().toString();
var month= this.getMonth().toString();
var day = this.getDay().toString();
var arrNum = ["零","一","二","三","四","五","六","七","八","九","十","十一","十二"];
var strTmp="";

for(var i=0,j=year.length;i<j;i++)
{
strTmp += arrNum[year.charAt(i)];
}
strTmp += "年";
strTmp += arrNum[month]+"月";
if(day<10)
strTmp += arrNum[day];
else if (day <20)
strTmp += "十"+arrNum[day-10];
else if (day <30 )
strTmp += "二十"+arrNum[day-20];
else
strTmp += "三十"+arrNum[day-30];
strTmp += "日";
return strTmp;
};

//日期比较函数,如大于参数:1,相等:0 不等: -1

this.dateCompare = function(dat)
{

if(typeof(dat)=="string")
{
if(dat!="") dat=new Date(timeString);
else dat=new Date();
}
if(typeof(dat)!="object" || dat.constructor != Date)


{
throw new Error(-2,"dateCompare的参数为日期类型或者可直接转化为日期类型的字符串!");
}
var d = this.date.getTime() - dat.getTime();
return d>0?1:(d==0?0:-1);
}
}
var d= new PowerDate("");
d.setIsFmtZero(true);

alert(d.getString("yy-mm-dd hh:mi:ss.ms"));

//-->
</script>
<body>
</body>



又改写了一下,可以用所有初始化Date对象的方法来初始化PowerDate对象了,而且可以是更不符合要求的字符串如: new PowerDate(" 2005@#@#8----22 ");也一样可以成功初始化,只是一定要包含三个数值.
农历的算法太长了,而且在开发中也很少应用,所以暂不加到该类中来.
新代码如下:

<script language="JavaScript">
<!--

function PowerDate()
{
//日期对象
this.date=null;
//格式化时是否加零补位标志
this.isFmtZero=false;
this.weekArr=[["星期日","星期一","星期二","星期三","星期四","星期五","星期六"],
["SUN","MON","TUR","WED","THU","FRI","SAT"]];
this.monthArr=["JAN","FEB","MAR","APR","MAY","JUN","JUL","AUG","SEP","OCT","NOV","DEC"];
//初始化日期对象

switch(arguments.length)
{
case 0:
this.date = new Date();
break;
case 1:

var reg = /^(\d
{2,4})\D+(\d
{1,2})\D+(\d
{1,2})$/;
var str = arguments[0].replace(/\s/,"");
str = str.replace(reg,"$1/$2/$3");
this.date = new Date(str);
break;
case 3:
this.date = new Date(arguments[0],arguments[1]-1,arguments[2]);
break;
case 6:
this.date = new Date(arguments[0],arguments[1]-1,arguments[2],arguments[3],arguments[4],arguments[5]);
break;
case 7:
this.date = new Date(arguments[0],arguments[1]-1,arguments[2],arguments[3],arguments[4],arguments[5],arguments[6]);
break;
default: this.date = new Date("1970/1/1"); break;
}
//初始化失败处理
if(typeof(this.date) != "object" || !(/Date/.test(this.date.constructor)))
throw (new Error(-1, '构造PowerDate方法失败,检查输入参数!'));


this.getDate = function ()
{
return this.date;
}

this.getFullYear=function()
{
return this.date.getFullYear();
};

this.getYear=function()
{
return this.date.getYear();
};

this.getMonth=function()
{
return this.frmWithZero(this.date.getMonth()+1);
};

this.getDay=function()
{
return this.frmWithZero(this.date.getDate());
};

this.getHour=function()
{
return this.frmWithZero(this.date.getHours());
};

this.getMinute=function()
{
return this.frmWithZero(this.date.getMinutes());
};

this.getSecond=function()
{
return this.frmWithZero(this.date.getSeconds());
};

this.getMillisecond=function()
{
var ss=this.date.getMilliseconds();
if(this.isFmtZero==true && ss<10)
return "00"+ss;
else if(this.isFmtZero==true && ss<100)
return "0"+ss;
else return ss;
};

this.getWeek=function()
{
return this.date.getDay();
};

this.setIsFmtZero=function(val)
{
this.isFmtZero=val;
};

this.frmWithZero = function(num)
{
if(this.isFmtZero==true && num<10)
return "0"+num;
else return num;
}

/**//*
功能:根据输入表达式返回日期字符串
参数:dateFmt:字符串,由以下结构组成 yy:长写年,YY:短写年mm:数字月,MM:英文月,dd:日,hh:时,mi:分,ss秒,ms:毫秒,we:汉字星期,WE:英文星期.
isFmtZero:布尔值,true:需要用0补位,false:不需要用0补位
*/

this.getString=function(dateFmt)
{
if(typeof(dateFmt) != "string" )
throw (new Error(-1, 'getString()方法需要字符串类型参数!'));
var str=dateFmt;
str=str.replace(/yy/g,this.getFullYear());
str=str.replace(/YY/g,this.getYear());
str=str.replace(/mm/g,this.getMonth());
str=str.replace(/MM/g,this.monthArr[this.getMonth()-1]);
str=str.replace(/dd/g,this.getDay());
str=str.replace(/hh/g,this.getHour());
str=str.replace(/mi/g,this.getMinute());
str=str.replace(/ss/g,this.getSecond());
str=str.replace(/ms/g,this.getMillisecond());
str=str.replace(/we/g,this.weekArr[0][this.getWeek()]);
str=str.replace(/WE/g,this.weekArr[1][this.getWeek()]);
return str;
};


/**//* 功能 : 返回与某日期相距N天(N个24小时)的日期
* 参数 : num number类型 可以为正负整数或者浮点数
* 返回 : 新的PowerDate类型
* 方法 : powerDate.dateAfterDays(num);
*/

this.dateAfterDays=function(num)
{
if(typeof(num)!="number") throw new Error(-1,"dateAfterDays(num)参数为数值类型.");
var dd = this.date.valueOf();
dd += num*24*3600*1000;
this.date=new Date(dd);
return this;
};


/**//* 功能 : 返回与某日期相距N秒的日期
* 参数 : num number类型 可以为正负整数或者浮点数
* 返回 : 新的日期
* 方法 : powerDate.dateAfterDays(num);
*/

this.dateAfterSeconds=function(num)
{
if(typeof(num)!="number") throw new Error(-1,"dateAfterDays(num)参数为数值类型.");
var dd = this.date.valueOf();
dd += num*1000;
this.date=new Date(dd);
return this;
};

//判断是否是闰年

this.isLeapYear = function ()
{
var year = this.getFullYear();
return (0==year%4 && ((year % 100 != 0)||(year % 400 == 0)));
};

//返回该月天数

this.getDaysOfMonth = function ()
{
return (new Date(this.getFullYear(),this.getMonth(),0)).getDate();
};

//转换成大写日期(中文)

this.getChinaDate = function()
{
var year = this.getFullYear();
var month= this.getMonth();
var day = this.getDay();
var arrNum = ["零","一","二","三","四","五","六","七","八","九","十","十一","十二"];
var strTmp="";

for(var i=0,j=year.length;i<j;i++)
{
strTmp += arrNum[year.charAt(i)];
}
strTmp += "年";
strTmp += arrNum[month]+"月";
if(day<10)
strTmp += arrNum[day];
else if (day <20)
strTmp += "十"+arrNum[day-10];
else if (day <30 )
strTmp += "二十"+arrNum[day-20];
else
strTmp += "三十"+arrNum[day-30];
strTmp += "日";
return strTmp;
};

//日期比较函数,如大于参数:1,相等:0 不等: -1

this.dateCompare = function(dat)
{

if(typeof(dat)=="string")
{
if(dat!="") dat=new Date(timeString);
else dat=new Date();
}
if(typeof(dat)!="object" || !(/Date/.test(this.date.constructor)))


{
throw new Error(-2,"dateCompare的参数为日期类型或者可直接转化为日期类型的字符串!");
}
var d = this.date.getTime() - dat.getTime();
return d>0?1:(d==0?0:-1);
}
}


var d= new PowerDate(" 98-5/1 ");//实例化一个PowerDate对象
d.setIsFmtZero(true);//设置为用0补位输出
alert(d.getString("yy-mm-dd hh:mi:ss.ms"));//输出日期字符串

//-->
</script>


新加了记算日期的方法,请大家帮测一下


/**//*功能:返回两日期之差
*参数:pd PowerDate对象
* type: 返回类别标识.yy:年,mm:月,dd:日,hh:小时,mi:分,ss:秒,ms:毫秒
* intOrFloat :返回整型还是浮点型值 0:整型,1:浮点型
*/

this.calDateDistance = function (pd,type,intOrFloat)
{
var miSecMain = this.date.valueOf();
var miSecSub = pd.getDate().valueOf();
var num=0;

switch(type)
{
case "yy": num = this.getFullYear() - pd.getFullYear();
break;
case "mm": num = (this.getFullYear() - pd.getFullYear())*12+this.getMonth()-pd.getMonth();
break;
case "dd": num = this.fmtRtnVal((miSecMain-miSecSub)/86400000,intOrFloat);
break;
case "hh": num = this.fmtRtnVal((miSecMain-miSecSub)/3600000,intOrFloat);
break;
case "mi": num = this.fmtRtnVal((miSecMain-miSecSub)/60000,intOrFloat);
break;
case "ss": num = this.fmtRtnVal((miSecMain-miSecSub)/1000,intOrFloat);
break;
case "ms": num = (miSecMain-miSecSub);
break;
default:
throw new Error(-1,"没有您要求返回的类型,请检查输入参数!");
break;
}
return num;
};

this.fmtRtnVal = function (val,intOrFloat)
{
//alert(val);
return (intOrFloat == 0 ? Math.floor(val) : parseInt(val*100)/100);
};



测试语句:

var d= new PowerDate(new Date());//实例化一个PowerDate对象
alert(d.calDateDistance(new PowerDate("2005/5/31"),"hh",1));//输出日期字符串




转载于:https://www.cnblogs.com/goody9807/archive/2005/11/24/283495.html