Date operation class DateTime function code implemented in js_javascript skills

方法注解：

将指定的天数加到此实例的值上。

将指定的小时数加到此实例的值上。

将指定的分钟数加到此实例的值上。

将指定的毫秒数加到此实例的值上。

将指定的月份数加到此实例的值上。

将指定的秒数加到此实例的值上。

将指定的年份数加到此实例的值上。

将此实例的值与指定的 Date 值相比较，并指示此实例是早于、等于还是晚于指定的 Date 值。

返回一个数值相同的新DateTime对象

返回一个值，该值指示此实例是否与指定的 DateTime 实例相等。

获取此实例的日期部分。

获取此实例所表示的日期为该月中的第几天。

获取此实例所表示的日期是星期几。

获取此实例所表示日期的小时部分。

获取此实例所表示日期的分钟部分。

获取此实例所表示日期的毫秒部分。

获取此实例所表示日期的月份部分。

获取此实例的下个月一日的DateTime对象

获取此实例的下一个周日的DateTime对象

获取此实例的下一个周日的DateTime对象

获取此实例所表示日期的秒部分。

返回此实例的Date值

获取此实例所表示日期的年份部分。

指示此实例是否是DateTime对象

将当前 DateTime 对象的值转换为其等效的短日期字符串表示形式。

将当前 DateTime 对象的值转换为其等效的短时间字符串表示形式。

将当前 DateTime 对象的值转换为其等效的字符串表示形式。

验证Add系列的方法参数是否合法

继承自Date的方法

比较 DateTime 的两个实例，并返回它们相对值的指示。

返回指定年和月中的天数。

返回一个值，该值指示 DateTime 的两个实例是否相等。

返回指定的年份是否为闰年的指示。

获取一个 DateTime 对象，该对象设置为此计算机上的当前日期和时间，表示为本地时间。

将日期和时间的指定字符串表示形式转换为其等效的 DateTime。

获取当前日期，其时间组成部分设置为 00:00:00。

Copy code The code is as follows:

//Represents a moment in time, usually expressed as a date and time of day.
function DateTime(year, month, day, hour, min, sec, millisec){
var d = new Date();

if (year || year == 0){
d.setFullYear(year);
}
if (month || month == 0){
d.setMonth(month - 1);
}
if (day | | day == 0){
d.setDate(day);
}
if (hour || hour == 0){
d.setHours(hour);
}
if (min || min == 0){
d.setMinutes(min);
}
if (sec || sec == 0){
d.setSeconds(sec) ;
}
if (millisec || millisec == 0){
d.setMilliseconds(millisec);
}
//Add the specified number of days to the value of this instance.
this.AddDays = function(value){
if(!ValidateAddMethodParam(value)){
return null;
var result = this.Clone(); result .GetValue().setDate(result.GetDay() value);
              return result;
this.AddHours = function(value){
if(!ValidateAddMethodParam(value)){
return null;
var result = this.Clone(); result .GetValue().setHours(result.GetHour() value);
             return result;
this.AddMinutes = function(value){
if(!ValidateAddMethodParam(value)){
return null;
var result = this.Clone(); result .GetValue().setMinutes(result.GetMinute() value);
              return result;
this.AddMilliseconds = function(value){
if(!ValidateAddMethodParam(value)){
return null;
var result = this.Clone(); result .GetValue().setMilliseconds(result.GetMillisecond() value);
    return result;
  }
 //Add the specified number of months to the value of this instance.
this.AddMonths = function(value){
if(!ValidateAddMethodParam(value)){
return null;
var result = this.Clone(); result .GetValue().setMonth(result.GetValue().getMonth() value);
    return result;
  }
  //Add the specified number of seconds to the value of this instance.
this.AddSeconds = function(value){
if(!ValidateAddMethodParam(value)){
return null;
var result = this.Clone(); result .GetValue().setSeconds(result.GetSecond() value);
    return result;
  }
 //Add the specified number of years to the value of this instance.
this.AddYears = function(value){
if(!ValidateAddMethodParam(value)){
return null;
var result = this.Clone(); result .GetValue().setFullYear(result.GetYear() value);
                return result; , equal to or later than the specified Date value.
this.CompareTo = function(other){
var internalTicks = other.getTime();
var num2 = d.getTime();
if (num2 > internalTicks)
{
return 1;
}
if (num2 < internalTicks)
{
return -1;
return 0;
}
// Return a new DateTime object with the same value
this.Clone = function(){
return new DateTime(
Day ()
, this.GetHour()
,this.GetMinute()
,this.GetSecond()
,this.GetMillisecond());
}
//Return A value indicating whether this instance is equal to the specified DateTime instance.
this.Equals = function(other){
return this.CompareTo(other) == 0;
}
//Get the date part of this instance.
this.GetDate = function(){
var result = new DateTime(d.getFullYear(), d.getMonth(), d.getDate(), 0, 0, 0, 0);
return result ;
}
//Get the day of the month represented by this instance.
this.GetDay = function(){
return d.getDate();
}
//Get the day of the week represented by this instance.
this.GetDayOfWeek = function(){
return d.getDay();
}
//Get the hour part of the date represented by this instance.
this.GetHour = function(){
return d.getHours();
}
//Get the minute part of the date represented by this instance.
this.GetMinute = function(){
return d.getMinutes();
}
//Get the millisecond part of the date represented by this instance.
this.GetMillisecond = function(){
return d.getMilliseconds();
}
//Get the month part of the date represented by this instance.
this.GetMonth = function(){
return d.getMonth() 1;
}
//Get the DateTime object for the first day of the next month for this instance
this.GetNextMonthFirstDay = function(){
var result = new DateTime(this.GetYear(), this.GetMonth(), 1, 0, 0, 0, 0);
result = result.AddMonths(1);
         return result; return result.AddDays(7 - result.GetDayOfWeek());
}
//Get the DateTime object of the next Sunday for this instance
this.GetNextYearFirstDay = function(){
return new DateTime(this.GetYear() 1, 1, 1, 0, 0, 0, 0);
}
} //Get the seconds part of the date represented by this instance.
this.GetSecond = function(){
return d.getSeconds();
}
//Return the Date value of this instance
this.GetValue = function(){
return d;
}
 //Get the year part of the date represented by this instance.
this.GetYear = function(){
return d.getFullYear();
}
//Indicate whether this instance is a DateTime object
this.IsDateTime = function(){}
//Convert the value of the current DateTime object to its equivalent short date string representation.
this.ToShortDateString = function(){
var result = "";
result = d.getFullYear() "-" (d.getMonth() 1) "-" d.getDate();
          return result;                                                                                                                                                                                                                                                                                     
this.ToShortTimeString = function(){
var result = "";
result = d.getHours() ":" d.getMinutes() ":" d.getSeconds();
return result; 
 }
 //Convert the value of the current DateTime object to its equivalent string representation.
this.ToString = function(format){
if(typeof(format) == "string"){

}
return this.ToShortDateString() " " this.ToShortTimeString( ;
                                                                                                                                                                  🎜>}

//Compares two instances of DateTime and returns an indication of their relative values.
DateTime.Compare = function(d1, d2){
return d1.CompareTo(d2);
}
//Return the number of days in the specified year and month.
DateTime.DaysInMonth = function(year, month){
if ((month < 1) || (month > 12))
{
return "month[" month "] exceeds Range";
}
var numArray = DateTime.IsLeapYear(year) ? DateTime.DaysToMonth366 : DateTime.DaysToMonth365;
return (numArray[month] - numArray[month - 1]);
}
//Returns a value indicating whether two instances of DateTime are equal.
DateTime.Equals = function(d1, d2){
return d1.CompareTo(d2) == 0;
}
//Returns an indication of whether the specified year is a leap year.
DateTime.IsLeapYear = function(year)
{
if ((year < 1) || (year > 0x270f))
{
return "year[" year "] Out of range";
}
if ((year % 4) != 0)
{
return false;
}
if ((year % 100) == 0)
{
return ((year % 400) == 0);
}
return true;
}
//Get a DateTime object, which is set on this computer The current date and time of , expressed as local time.
DateTime.Now = new DateTime();
//Convert the specified string representation of date and time to its DateTime equivalent.
DateTime.Parse = function(s){
var result = new DateTime();
var value = result.GetValue();
value.setHours(0,0,0,0) ;
var dateRex = /b[1-2][0-9][0-9][0-9][-]d{1,2}[-]d{1,2}b/i ;
if(dateRex.test(s)){
var dateStr = s.match(dateRex)[0];
try{
var dateParts = dateStr.split("-");
var Year = Dateparts [0] -0;
var Month = Dateparts [1] - 1;
var day = dateparts [2] -0;
Value.setFullyear day ); ,2}b/i;
if(timeRex.test(s)){
var timeStr = s.match(timeRex)[0];
try{
var timeParts = timeStr.split (":");
var hour = timeParts[0] - 0;
var min = timeParts[1] - 0;
var sec = timeParts[2] - 0;
value. sethouse (hour, min, sec);
} catch (ex) {
}
}
} else {
Return null;
}
RETURN Result ;
}
//Get the current date with its time component set to 00:00:00.
DateTime.Today = new DateTime(null, null, null, 0, 0, 0, 0);

//Static field
DateTime.DaysToMonth365 = [ 0, 0x1f, 0x3b, 90 , 120, 0x97, 0xb5, 0xd4, 0xf3, 0x111, 0x130, 0x14e, 0x16d ];
DateTime.DaysToMonth366 = [ 0, 0x1f, 60, 0x5b, 0x79, 0x98, 0xb6, 0xd5, 0xf4, 0x112, 0x131, 0x14f, 0x16e ];