Js獲取當前日期時間及其它操作

Js獲取當前日期時間及其它操作

var myDate = new Date();
myDate.getYear();        //獲取當前年份(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();     //獲取當前分鐘數(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

 

日期時間腳本庫方法列表

Date.prototype.isLeapYear 判斷閏年
Date.prototype.Format 日期格式化
Date.prototype.DateAdd 日期計算
Date.prototype.DateDiff 比較日期差
Date.prototype.toString 日期轉字符串
Date.prototype.toArray 日期分割爲數組
Date.prototype.DatePart 取日期的部分信息
Date.prototype.MaxDayOfDate 取日期所在月的最大天數
Date.prototype.WeekNumOfYear 判斷日期所在年的第幾周
StringToDate 字符串轉日期型
IsValidDate 驗證日期有效性
CheckDateTime 完整日期時間檢查
daysBetween 日期天數差

//--------------------------------------------------- 

// 判斷閏年 

//--------------------------------------------------- 

Date.prototype.isLeapYear = function() 

{ 

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

} 

//--------------------------------------------------- 

// 日期格式化 

// 格式 YYYY/yyyy/YY/yy 表示年份 

// MM/M 月份 

// W/w 星期 

// dd/DD/d/D 日期 

// hh/HH/h/H 時間 

// mm/m 分鐘 

// ss/SS/s/S 秒 

//--------------------------------------------------- 

Date.prototype.Format = function(formatStr) 

{ 

var str = formatStr; 

var Week = ['日','一','二','三','四','五','六']; 

str=str.replace(/yyyy|YYYY/,this.getFullYear()); 

str=str.replace(/yy|YY/,(this.getYear() % 100)>9?(this.getYear() % 100).toString():'0' + (this.getYear() % 100)); 

str=str.replace(/MM/,this.getMonth()>9?this.getMonth().toString():'0' + this.getMonth()); 

str=str.replace(/M/g,this.getMonth()); 

str=str.replace(/w|W/g,Week[this.getDay()]); 

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; 

} 

//+--------------------------------------------------- 

//| 求兩個時間的天數差 日期格式爲 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()); 

} 

} 

//+--------------------------------------------------- 

//| 比較日期差 dtEnd 格式爲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' )//如果是字符串轉換爲日期型 

{ 

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; 

} 

//+--------------------------------------------------- 

//| 日期合法性驗證 

//| 格式爲：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就替換爲'' 

//數據庫中，合法日期可以是:YYYY-MM/DD(2003-3/21),數據庫會自動轉換爲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！格式爲：YYYY-MM-DD或YYYY/MM/DD。注意閏年。'); 

return false; 

} 

} 

else 

{ 

//alert('錯誤的日期格式！格式爲：YYYY-MM-DD或YYYY/MM/DD。注意閏年。'); 

return false; 

} 

return true; 

} 

//+--------------------------------------------------- 

//| 日期時間檢查 

//| 格式爲：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; 

} 

//+--------------------------------------------------- 

//| 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; 

} 

//+--------------------------------------------------- 

//| 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; 

} 

//+--------------------------------------------------- 

//| 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('< script language="VBScript\" > \n'); 

document.write('myDate = Datue(''+month+'-'+day+'-'+year+'') \n'); 

document.write('result = DatePart('ww', myDate) \n'); 

document.write(' \n'); 

return result; 

} 

//+--------------------------------------------------- 

//| 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; 

}