/*
* Date.prototype.isLeapYear 判断闰年
* Date.prototype.Format 日期格式化
* Date.prototype.DateAdd 日期计算
* Date.prototype.DateDiff 比较日期差
* Date.prototype.toString 日期转字符串
* Date.prototype.toArray 日期分割为数组
* Date.prototype.DatePart 取日期的部分信息
* Date.prototype.MaxDayOfDate 取日期所在月的最大天数
* Date.prototype.WeekNumOfYear 判断日期所在年的第几周
* StringToDate 字符串转日期型
* IsValidDate 验证日期有效性
* CheckDateTime 完整日期时间检查
* daysBetween 日期天数差
*/


//---------------------------------------------------   
// 判断闰年   
//---------------------------------------------------   
/*
Date.prototype.isLeapYear = function()    
{    
     return (0==this.getYear()%4&&((this.getYear()%100!=0)||(this.getYear()%400==0)));    
}      
   
//+---------------------------------------------------   
//| 求两个时间的天数差 日期格式为 YYYY-MM-dd    
//+---------------------------------------------------   
function daysBetween(DateOne,DateTwo)   
{    
     var OneMonth = DateOne.substring(5,DateOne.lastIndexOf ('-'));   
     var OneDay = DateOne.substring(DateOne.length,DateOne.lastIndexOf ('-')+1);   
     var OneYear = DateOne.substring(0,DateOne.indexOf ('-'));   
   
     var TwoMonth = DateTwo.substring(5,DateTwo.lastIndexOf ('-'));   
     var TwoDay = DateTwo.substring(DateTwo.length,DateTwo.lastIndexOf ('-')+1);   
     var TwoYear = DateTwo.substring(0,DateTwo.indexOf ('-'));   
   
     var cha=((Date.parse(OneMonth+'/'+OneDay+'/'+OneYear)- Date.parse(TwoMonth+'/'+TwoDay+'/'+TwoYear))/86400000);    
     return Math.abs(cha);   
}   
  */ 
   
//+---------------------------------------------------   
//| 日期计算   
//+---------------------------------------------------   
Date.prototype.DateAdd = function(strInterval, Number) {    
     var dtTmp = this;   
     switch (strInterval) {    
         case 's' :return new Date(Date.parse(dtTmp) + (1000 * Number));   
         case 'n' :return new Date(Date.parse(dtTmp) + (60000 * Number));   
         case 'h' :return new Date(Date.parse(dtTmp) + (3600000 * Number));   
         case 'd' :return new Date(Date.parse(dtTmp) + (86400000 * Number));   
         case 'w' :return new Date(Date.parse(dtTmp) + ((86400000 * 7) * Number));   
         case 'q' :return new Date(dtTmp.getFullYear(), (dtTmp.getMonth()) + Number*3, dtTmp.getDate(), dtTmp.getHours(), dtTmp.getMinutes(), dtTmp.getSeconds());   
         case 'm' :return new Date(dtTmp.getFullYear(), (dtTmp.getMonth()) + Number, dtTmp.getDate(), dtTmp.getHours(), dtTmp.getMinutes(), dtTmp.getSeconds());   
         case 'y' :return new Date((dtTmp.getFullYear() + Number), dtTmp.getMonth(), dtTmp.getDate(), dtTmp.getHours(), dtTmp.getMinutes(), dtTmp.getSeconds());   
     }   
}   
 
 /*  
//+---------------------------------------------------   
//| 比较日期差 dtEnd 格式为日期型或者 有效日期格式字符串   
//+---------------------------------------------------   
Date.prototype.DateDiff = function(strInterval, dtEnd) {    
     var dtStart = this;   
     if (typeof dtEnd == 'string' )//如果是字符串转换为日期型   
     {    
         dtEnd = StringToDate(dtEnd);   
     }   
     switch (strInterval) {    
         case 's' :return parseInt((dtEnd - dtStart) / 1000);   
         case 'n' :return parseInt((dtEnd - dtStart) / 60000);   
         case 'h' :return parseInt((dtEnd - dtStart) / 3600000);   
         case 'd' :return parseInt((dtEnd - dtStart) / 86400000);   
         case 'w' :return parseInt((dtEnd - dtStart) / (86400000 * 7));   
         case 'm' :return (dtEnd.getMonth()+1)+((dtEnd.getFullYear()-dtStart.getFullYear())*12) - (dtStart.getMonth()+1);   
         case 'y' :return dtEnd.getFullYear() - dtStart.getFullYear();   
     }   
}   
   
//+---------------------------------------------------   
//| 日期输出字符串，重载了系统的toString方法   
//+---------------------------------------------------   
Date.prototype.toString = function(showWeek)   
{    
     var myDate= this;   
     var str = myDate.toLocaleDateString();   
     if (showWeek)   
     {    
         var Week = ['日','一','二','三','四','五','六'];   
         str += ' 星期' + Week[myDate.getDay()];   
     }   
     return str;   
}   
   
 
   
//+---------------------------------------------------   
//| 日期时间检查   
//| 格式为：YYYY-MM-DD HH:MM:SS   
//+---------------------------------------------------   
function CheckDateTime(str)   
{    
     var reg = /^(\d+)-(\d{ 1,2 })-(\d{ 1,2 }) (\d{ 1,2 }):(\d{ 1,2 }):(\d{ 1,2 })$/;    
     var r = str.match(reg);    
     if(r==null)return false;    
     r[2]=r[2]-1;    
     var d= new Date(r[1],r[2],r[3],r[4],r[5],r[6]);    
     if(d.getFullYear()!=r[1])return false;    
     if(d.getMonth()!=r[2])return false;    
     if(d.getDate()!=r[3])return false;    
     if(d.getHours()!=r[4])return false;    
     if(d.getMinutes()!=r[5])return false;    
     if(d.getSeconds()!=r[6])return false;    
     return true;    
}    
   
//+---------------------------------------------------   
//| 把日期分割成数组   
//+---------------------------------------------------   
Date.prototype.toArray = function()   
{    
     var myDate = this;   
     var myArray = Array();   
     myArray[0] = myDate.getFullYear();   
     myArray[1] = myDate.getMonth();   
     myArray[2] = myDate.getDate();   
     myArray[3] = myDate.getHours();   
     myArray[4] = myDate.getMinutes();   
     myArray[5] = myDate.getSeconds();   
     return myArray;   
}   
   
  */
   
//+---------------------------------------------------   
//| 取得日期数据信息   
//| 参数 interval 表示数据类型   
//| y 年 m月 d日 w星期 ww周 h时 n分 s秒   
//+---------------------------------------------------   
Date.prototype.DatePart = function(interval)  
{   
    var myDate = this;  
    var partStr='';  
    //var weekArray = ['日','一','二','三','四','五','六'];  
    //alert(myDate.getDay());
    switch (interval)  
    {   
        case 'y' :partStr = myDate.getFullYear();break;  
        case 'm' :partStr = myDate.getMonth()+1;break;  
        case 'd' :partStr = myDate.getDate();break;  
        case 'w' :partStr = ""//getWeek(myDate.getDay());break;  
       // case 'ww':partStr = myDate.WeekNumOfYear();break;  
        case 'h' :partStr = myDate.getHours();break;  
        case 'n' :partStr = myDate.getMinutes();break;  
        case 's' :partStr = myDate.getSeconds();break;  
    }  
    return partStr;  
}

 /*  
   
//+---------------------------------------------------   
//| 取得当前日期所在月的最大天数   
//+---------------------------------------------------   
Date.prototype.MaxDayOfDate = function()   
{    
     var myDate = this;   
     var ary = myDate.toArray();   
     var date1 = (new Date(ary[0],ary[1]+1,1));   
     var date2 = date1.dateAdd(1,'m',1);   
     var result = dateDiff(date1.Format('yyyy-MM-dd'),date2.Format('yyyy-MM-dd'));   
     return result;   
}   
   
 */
   
//+---------------------------------------------------   
//| 字符串转成日期类型    
//| 格式 MM/dd/YYYY MM-dd-YYYY YYYY/MM/dd YYYY-MM-dd   
//+---------------------------------------------------   
function StringToDate(DateStr)   
{    
     var converted = Date.parse(DateStr);   
     var myDate = new Date(converted);   
     if (isNaN(myDate))   
     {    
         //var delimCahar = DateStr.indexOf('/')!=-1?'/':'-';   
         var arys= DateStr.split('-');   
         myDate = new Date(arys[0],--arys[1],arys[2]);   
     }   
     return myDate;   
}   

//+---------------------------------------------------   
//| 日期转化为字符串    
//| 返回格式 YYYY-MM-dd   
//+---------------------------------------------------   
function DateToString(date)   
{    
	 var year = date.getYear();
	 var month = date.getMonth() + 1;
	 if(month < 10){month = "0" + month;}
	 var day = date.getDate();
	 if(day < 10){day = "0" + day;}
     var dateString = year + "-" + month + "-" + day;
     return dateString;
       
}

//+---------------------------------------------------   
//| 比较两日期的大小    
//| 格式 YYYY/MM/dd YYYY-MM-dd   
//| dateStr1大于dateStr2时才返回true
//+---------------------------------------------------   
function CompareTwoDate(dateStr1, dateStr2)   
{    
	var bigDate,smallDate;
    var splitChar1 = dateStr1.indexOf('/')!=-1?'/':'-';
    var splitChar2 = dateStr2.indexOf('/')!=-1?'/':'-';
    var dateStrArray1 = dateStr1.split(splitChar1);
    var dateStrArray2 = dateStr2.split(splitChar2);
    bigDate = new Date(dateStrArray1[0], dateStrArray1[1], dateStrArray1[2]);
    smallDate = new Date(dateStrArray2[0], dateStrArray2[1], dateStrArray2[2]);
    if(bigDate.getTime() <= smallDate.getTime()){
    	return false;
    }
    return true;
}