Js獲取處理日期時間

基本方法

var myDate = new Date();myDate.getYear(); //當前年份(2位)
myDate.getFullYear(); //獲取完整的年份(4位,1970-????)
myDate.getMonth(); //獲取當前月份(0-11,0代表1月)
myDate.getDate(); //獲取當前日(1-31)
myDate.getDay(); //獲取當前星期X(0-6,0代表星期天)
myDate.getTime(); //獲取當前時間(從1970.1.1開始的毫秒數)
myDate.getHours(); //獲取當前小時數(0-23)
myDate.getMinutes(); //獲取當前分鍾數(0-59)
myDate.getSeconds(); //獲取當前秒數(0-59)
myDate.getMilliseconds(); //獲取當前毫秒數(0-999)
myDate.toLocaleDateString(); //獲取當前日期
var mytime=myDate.toLocaleTimeString(); //獲取當前時間
myDate.toLocaleString( ); //獲取日期與時間

日期時間方法擴展

Date.prototype.isLeapYear 判斷閏年

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

Date.prototype.Format 日期格式化

        Date.prototype.format = function(format) 
        {
            var o = {
                "M+": this.getMonth() + 1, //month
                "d+": this.getDate(),    //day
                "H+": this.getHours(),   //hour
                "m+": this.getMinutes(), //minute
                "s+": this.getSeconds(), //second
                "q+": Math.floor((this.getMonth() + 3) / 3),  //quarter
                "S": this.getMilliseconds() //millisecond
            }
            if (/(y+)/.test(format)) format = format.replace(RegExp.$1,
            (this.getFullYear() + "").substr(4 - RegExp.$1.length));
            for (var k in o) if (new RegExp("(" + k + ")").test(format))
                format = format.replace(RegExp.$1,
              RegExp.$1.length == 1 ? o[k] :
                ("00" + o[k]).substr(("" + o[k]).length));
            return format;
        }
            

Date.prototype.DateDiff 比較日期差

//+--------------------------------------------------- 
//| 求兩個時間的天數差 日期格式為 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); 
} 

daysBetween 日期天數差

//+--------------------------------------------------- 
//| 比較日期差 dtEnd 格式為日期型或者 有效日期格式字符串 
//+--------------------------------------------------- 
Date.prototype.DateDiff = function(strInterval, dtEnd) { 
var dtStart = this; 
if (typeof dtEnd == 'string' )//如果是字符串轉換為日期型 
{ 
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(); 
} 
} 

Date.prototype.DateAdd 日期計算

//+--------------------------------------------------- 
//| 日期計算 
//+--------------------------------------------------- 
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()); 
} 
} 

Date.prototype.toString 日期轉字符串

//+--------------------------------------------------- 
//| 日期輸出字符串，重載了系統的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; 
} 

Date.prototype.toArray 日期分割為數組

//+--------------------------------------------------- 
//| 把日期分割成數組 
//+--------------------------------------------------- 
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; 
} 

Date.prototype.DatePart 取日期的部分信息

//| 取得日期數據信息 
//| 參數 interval 表示數據類型 
//| y 年 m月 d日 w星期 ww周 h時 n分 s秒 
//+--------------------------------------------------- 
Date.prototype.DatePart = function(interval) 
{ 
var myDate = this; 
var partStr=''; 
var Week = ['日','一','二','三','四','五','六']; 
switch (interval) 
{ 
case 'y' :partStr = myDate.getFullYear();break; 
case 'm' :partStr = myDate.getMonth()+1;break; 
case 'd' :partStr = myDate.getDate();break; 
case 'w' :partStr = Week[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; 
} 

Date.prototype.MaxDayOfDate 取日期所在月的最大天數

//+--------------------------------------------------- 
//| 取得當前日期所在月的最大天數 
//+--------------------------------------------------- 
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; 
} 

Date.prototype.WeekNumOfYear 判斷日期所在年的第幾周

//+--------------------------------------------------- 
//| 取得當前日期所在周是一年中的第幾周 
//+--------------------------------------------------- 
Date.prototype.WeekNumOfYear = function() 
{ 
var myDate = this; 
var ary = myDate.toArray(); 
var year = ary[0]; 
var month = ary[1]+1; 
var day = ary[2]; 
document.write(&apos;< script language=VBScript\> \n&apos;); 
document.write(&apos;myDate = DateValue(&apos;&apos;+month+&apos;-&apos;+day+&apos;-&apos;+year+&apos;&apos;) \n&apos;); 
document.write(&apos;result = DatePart(&apos;ww&apos;, myDate) \n&apos;); 
document.write(&apos; \n&apos;); 
return result; 
}

StringToDate 字符串轉日期型

//+--------------------------------------------------- 
//| 字符串轉成日期類型 
//| 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; 
} 

IsValidDate 驗證日期有效性

//+--------------------------------------------------- 
//| 日期合法性驗證 
//| 格式為：YYYY-MM-DD或YYYY/MM/DD 
//+--------------------------------------------------- 
function IsValidDate(DateStr) 
{ 
var sDate=DateStr.replace(/(^\s+|\s+$)/g,''); //去兩邊空格; 
if(sDate=='') return true; 
//如果格式滿足YYYY-(/)MM-(/)DD或YYYY-(/)M-(/)DD或YYYY-(/)M-(/)D或YYYY-(/)MM-(/)D就替換為'' 
//數據庫中，合法日期可以是:YYYY-MM/DD(2003-3/21),數據庫會自動轉換為YYYY-MM-DD格式 
var s = sDate.replace(/[\d]{ 4,4 }[\-/]{ 1 }[\d]{ 1,2 }[\-/]{ 1 }[\d]{ 1,2 }/g,''); 
if (s=='') //說明格式滿足YYYY-MM-DD或YYYY-M-DD或YYYY-M-D或YYYY-MM-D 
{ 
var t=new Date(sDate.replace(/\-/g,'/')); 
var ar = sDate.split(/[-/:]/); 
if(ar[0] != t.getYear() || ar[1] != t.getMonth()+1 || ar[2] != t.getDate()) 
{ 
//alert('錯誤的日期格式！格式為：YYYY-MM-DD或YYYY/MM/DD。注意閏年。'); 
return false; 
} 
} 
else 
{ 
//alert('錯誤的日期格式！格式為：YYYY-MM-DD或YYYY/MM/DD。注意閏年。'); 
return false; 
} 
return true; 
} 

CheckDateTime 完整日期時間檢查

//+--------------------------------------------------- 
//| 日期時間檢查 
//| 格式為：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; 
} 

Firefox下的兼容處理

Firefox的getYear函數獲取到的值是當前年份減去1900的值

 

var today=new Date();

 

date=today.getDate();

 

month=today.getMonth();

 

month=month+1;

 

if(month<=9)

 

month="0"+month;

 

year=today.getYear();

if(year<1900)year+=1900; //Firefox下的兼容處理