JS日期操作大全

Posted 2022-12-06 一拳超超人

js操作时间(函数)

var myDate = new Date();

myDate.getYear();        //获取当前年份(2位)

myDate.getFullYear();    //获取完整的年份(4位,1970-????)

myDate.getMonth();       //获取当前月份(0-11,0代表1月)

myDate.getDate();        //获取当前日(1-31)

myDate.getDay();         //获取当前星期X(0-6,0代表星期天)

myDate.getTime();        //获取当前时间(从1970.1.1开始的毫秒数)

myDate.getHours();       //获取当前小时数(0-23)

myDate.getMinutes();     //获取当前分钟数(0-59)

myDate.getSeconds();     //获取当前秒数(0-59)

myDate.getMilliseconds();    //获取当前毫秒数(0-999)

myDate.toLocaleDateString();     //获取当前日期

var mytime=myDate.toLocaleTimeString();     //获取当前时间

myDate.toLocaleString( );        //获取日期与时间

日期时间脚本库方法列表

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

js代码：

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

// 判断闰年  

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

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 时间  

// mm/m 分钟  

// 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;  

  

  

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

//| 日期合法性验证  

//| 格式为：YYYY-MM-DD或YYYY/MM/DD  

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

function IsValidDate(DateStr)   

   

    var sDate=DateStr.replace(/(^/s+|/s+$)/g,''); //去两边空格;   

    if(sDate=='') return true;   

    //如果格式满足YYYY-(/)MM-(/)DD或YYYY-(/)M-(/)DD或YYYY-(/)M-(/)D或YYYY-(/)MM-(/)D就替换为''   

    //<a href="http://lib.csdn.net/base/mysql" class='replace_word' title="MySQL知识库" target='_blank' style='color:#df3434; font-weight:bold;'>数据库</a>中，合法日期可以是:YYYY-MM/DD(2003-3/21),数据库会自动转换为YYYY-MM-DD格式   

    var s = sDate.replace(/[/d] 4,4 [/-/] 1 [/d] 1,2 [/-/] 1 [/d] 1,2 /g,'');   

    if (s=='') //说明格式满足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('错误的日期格式！格式为：YYYY-MM-DD或YYYY/MM/DD。注意闰年。');   

            return false;   

           

       

    else   

       

        //alert('错误的日期格式！格式为：YYYY-MM-DD或YYYY/MM/DD。注意闰年。');   

        return false;   

       

    return true;   

   

  

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

//| 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 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;  

  

  

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

//| 取得当前日期所在周是一年中的第几周  

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

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 = DateValue(''+month+'-'+day+'-'+year+'') /n');  

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

    document.write(' /n');  

    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;  

  

js版的dateAdd与dateDiff

/* 得到日期年月日等加数字后的日期 */ 
Date.prototype.dateAdd = function(interval,number) 
 
    var d = this; 
    var k='y':'FullYear', 'q':'Month', 'm':'Month', 'w':'Date', 'd':'Date', 'h':'Hours', 'n':'Minutes', 's':'Seconds', 'ms':'MilliSeconds'; 
    var n='q':3, 'w':7; 
    eval('d.set'+k[interval]+'(d.get'+k[interval]+'()+'+((n[interval]||1)*number)+')'); 
    return d; 
 
/* 计算两日期相差的日期年月日等 */ 
Date.prototype.dateDiff = function(interval,objDate2) 
 
    var d=this, i=, t=d.getTime(), t2=objDate2.getTime(); 
    i['y']=objDate2.getFullYear()-d.getFullYear(); 
    i['q']=i['y']*4+Math.floor(objDate2.getMonth()/4)-Math.floor(d.getMonth()/4); 
    i['m']=i['y']*12+objDate2.getMonth()-d.getMonth(); 
    i['ms']=objDate2.getTime()-d.getTime(); 
    i['w']=Math.floor((t2+345600000)/(604800000))-Math.floor((t+345600000)/(604800000)); 
    i['d']=Math.floor(t2/86400000)-Math.floor(t/86400000); 
    i['h']=Math.floor(t2/3600000)-Math.floor(t/3600000); 
    i['n']=Math.floor(t2/60000)-Math.floor(t/60000); 
    i['s']=Math.floor(t2/1000)-Math.floor(t/1000); 
    return i[interval]; 
 

dateAdd 方法

返回已添加指定时间间隔的日期对象。

dateObj.dateAdd(interval, number)

参数

dateObj

    必选项。任意 Date 对象。

interval

    必选项。字符串表达式，表示要添加的时间间隔。有关数值，请参阅“设置”部分。

number

    必选项。数值表达式，表示要添加的时间间隔的个数。数值表达式可以是正数（得到未来的日期）或负数（得到过去的日期）。

dateDiff 方法

返回两个日期对象之间的时间间隔。

dateObj.dateDiff(interval, dateObj2)

参数

interval

    必选项。字符串表达式，表示用于计算 date1 和 date2 之间的时间间隔。有关数值，请参阅“设置”部分。

dateObj, dateObj2

    必选项。日期对象。用于计算的两个日期对象。

设置

interval 参数可以有以下值：

设置	描述
y	年
q	季度
m	月
d	日
w	周
h	小时
n	分钟
s	秒
ms	毫秒

 

js获取日期星期

<mce:script language=<a href="http://lib.csdn.net/base/javascript" class='replace_word' title="JavaScript知识库" target='_blank' style='color:#df3434; font-weight:bold;'>JavaScript</a>><!--
//今天
function showToDay()

var Nowdate=new Date();
M=Number(Nowdate.getMonth())+1
return Nowdate.getYear()+"-"+M+"-"+Nowdate.getDate();


//本周第一天
function showWeekFirstDay()

var Nowdate=new Date();
var WeekFirstDay=new Date(Nowdate-(Nowdate.getDay()-1)*86400000);
return WeekFirstDay;

//本周最后一天
function showWeekLastDay()

var Nowdate=new Date();
var WeekFirstDay=new Date(Nowdate-(Nowdate.getDay()-1)*86400000);
var WeekLastDay=new Date((WeekFirstDay/1000+6*86400)*1000);
return WeekLastDay;


//本月第一天
function showMonthFirstDay()

var Nowdate=new Date();
var MonthFirstDay=new Date(Nowdate.getYear(),Nowdate.getMonth(),1);
return MonthFirstDay;

//本月最后一天
function showMonthLastDay()

var Nowdate=new Date();
var MonthNextFirstDay=new Date(Nowdate.getYear(),Nowdate.getMonth()+1,1);
var MonthLastDay=new Date(MonthNextFirstDay-86400000);
return MonthLastDay;

//上月第一天
function showPreviousFirstDay()

var MonthFirstDay=showMonthFirstDay()
return new Date(MonthFirstDay.getYear(),MonthFirstDay.getMonth()-1,1)

//上月最后一天
function showPreviousLastDay()

var MonthFirstDay=showMonthFirstDay();
return new Date(MonthFirstDay-86400000);

//上周第一天
function showPreviousFirstWeekDay()

var WeekFirstDay=showWeekFirstDay()
return new Date(WeekFirstDay-86400000*7)

//上周最后一天
function showPreviousLastWeekDay()

var WeekFirstDay=showWeekFirstDay()
return new Date(WeekFirstDay-86400000)

//上一天
function showPreviousDay()

var MonthFirstDay=new Date();
return new Date(MonthFirstDay-86400000);

//下一天
function showNextDay()

var MonthFirstDay=new Date();
return new Date((MonthFirstDay/1000+86400)*1000);

//下周第一天
function showNextFirstWeekDay()

var MonthFirstDay=showWeekLastDay()
return new Date((MonthFirstDay/1000+86400)*1000)

//下周最后一天
function showNextLastWeekDay()

var MonthFirstDay=showWeekLastDay()
return new Date((MonthFirstDay/1000+7*86400)*1000)

//下月第一天
function showNextFirstDay()

var MonthFirstDay=showMonthFirstDay()
return new Date(MonthFirstDay.getYear(),MonthFirstDay.getMonth()+1,1)

//下月最后一天
function showNextLastDay()

var MonthFirstDay=showMonthFirstDay()
return new Date(new Date(MonthFirstDay.getYear(),MonthFirstDay.getMonth()+2,1)-86400000)

function Date.prototype.toString()
return this.getFullYear()+"-"+(this.getMonth()+1)+"-"+this.getDate();

function setDate(num)
if(num==1)
document.all.dateDate.value=showMonthFirstDay();
document.all.dateDate2.value=showMonthLastDay();

if(num==2)
document.all.dateDate.value=showWeekFirstDay();
document.all.dateDate2.value=showWeekLastDay();

if(num==3)
document.all.dateDate.value=showToDay();
document.all.dateDate2.value=showToDay();

if(num==4)
document.all.dateDate.value=showPreviousFirstDay();
document.all.dateDate2.value=showPreviousLastDay();

if(num==5)
document.all.dateDate.value=showNextFirstDay();
document.all.dateDate2.value=showNextLastDay();

if(num==6)
document.all.dateDate.value=showPreviousFirstWeekDay();
document.all.dateDate2.value=showPreviousLastWeekDay();

if(num==7)
document.all.dateDate.value=showNextFirstWeekDay();
document.all.dateDate2.value=showNextLastWeekDay();

if(num==8)
document.all.dateDate.value=showPreviousDay();
document.all.dateDate2.value=showPreviousDay();

if(num==9)
document.all.dateDate.value=showNextDay();
document.all.dateDate2.value=showNextDay();


// --></mce:script>
<input name=dateDate type=text>-><input name=dateDate2 type=text>
 <input name=haha type=button value="上一月" οnclick=setDate(4)> 
 <input name=haha type=button value="本月" οnclick=setDate(1)> 
<input name=haha type=button value="下一月" οnclick=setDate(5)> 
<input name=haha type=button value="上一周" οnclick=setDate(6)> 
<input name=haha type=button value="本周" οnclick=setDate(2)> 
<input name=haha type=button value="下一周" οnclick=setDate(7)> 
<input name=haha type=button value="上一天" οnclick=setDate(8)> 
<input name=haha type=button value="今天" οnclick=setDate(3)> 
<input name=haha type=button value="下一天" οnclick=setDate(9)>

可以灵活组合