JS获取当前的日期和时间的方法：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(2015/8/13)myDate.toLocaleTimeString(); //获取当前时间(下午：12:08:06)myDate.toLocaleString( ); //获取日期与时间(2015/8/13 下午2:38:03)
日期时间脚本库方法列表:
(1)Date.prototype.isLeapYear 判断闰年
(2)Date.prototype.Format 日期格式化
(3)Date.prototype.DateAdd 日期计算
(4)Date.prototype.DateDiff 比较日期差
(5)Date.prototype.toString 日期转字符串
(6)Date.prototype.toArray 日期分割为数组
(7)Date.prototype.DatePart 取日期的部分信息
(8)Date.prototype.MaxDayOfDate 取日期所在月的最大天数
(9)Date.prototype.WeekNumOfYear 判断日期所在年的第几周
(10)StringToDate 字符串转日期型
(11)IsValidDate 验证日期有效性
(12)CheckDateTime 完整日期时间检查
(13)daysBetween 日期天数差
(1)判断闰年
1 Date.prototype.isLeapYear = function()
2 {
3 return (0==this.getYear()%4&&((this.getYear()%100!=0)||(this.getYear()%400==0)));
4 }
(2)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
1 Date.prototype.Format = function(formatStr)
2 {
3 var str = formatStr;
4 var Week = [‘日‘,‘一‘,‘二‘,‘三‘,‘四‘,‘五‘,‘六‘];
5
6 str=str.replace(/yyyy|YYYY/,this.getFullYear());
7 str=str.replace(/yy|YY/,(this.getYear() % 100)>9?(this.getYear() % 100).toString():‘0‘ + (this.getYear() % 100));
8
9 str=str.replace(/MM/,this.getMonth()>9?this.getMonth().toString():‘0‘ + this.getMonth());
10 str=str.replace(/M/g,this.getMonth());
11
12 str=str.replace(/w|W/g,Week[this.getDay()]);
13
14 str=str.replace(/dd|DD/,this.getDate()>9?this.getDate().toString():‘0‘ + this.getDate());
15 str=str.replace(/d|D/g,this.getDate());
16
17 str=str.replace(/hh|HH/,this.getHours()>9?this.getHours().toString():‘0‘ + this.getHours());
18 str=str.replace(/h|H/g,this.getHours());
19 str=str.replace(/mm/,this.getMinutes()>9?this.getMinutes().toString():‘0‘ + this.getMinutes());
20 str=str.replace(/m/g,this.getMinutes());
21
22 str=str.replace(/ss|SS/,this.getSeconds()>9?this.getSeconds().toString():‘0‘ + this.getSeconds());
23 str=str.replace(/s|S/g,this.getSeconds());
24
25 return str;
26 }
(3)求两个时间的天数差 日期格式为 YYYY-MM-dd
1 function daysBetween(DateOne,DateTwo)
2 {
3 var OneMonth = DateOne.substring(5,DateOne.lastIndexOf (‘-‘));
4 var OneDay = DateOne.substring(DateOne.length,DateOne.lastIndexOf (‘-‘)+1);
5 var OneYear = DateOne.substring(0,DateOne.indexOf (‘-‘));
6
7 var TwoMonth = DateTwo.substring(5,DateTwo.lastIndexOf (‘-‘));
8 var TwoDay = DateTwo.substring(DateTwo.length,DateTwo.lastIndexOf (‘-‘)+1);
9 var TwoYear = DateTwo.substring(0,DateTwo.indexOf (‘-‘));
10
11 var cha=((Date.parse(OneMonth+‘/‘+OneDay+‘/‘+OneYear)- Date.parse(TwoMonth+‘/‘+TwoDay+‘/‘+TwoYear))/86400000);
12 return Math.abs(cha);
13 }
(4)日期计算
1 Date.prototype.DateAdd = function(strInterval, Number) {
2 var dtTmp = this;
3 switch (strInterval) {
4 case ‘s‘ :return new Date(Date.parse(dtTmp) + (1000 * Number));
5 case ‘n‘ :return new Date(Date.parse(dtTmp) + (60000 * Number));
6 case ‘h‘ :return new Date(Date.parse(dtTmp) + (3600000 * Number));
7 case ‘d‘ :return new Date(Date.parse(dtTmp) + (86400000 * Number));
8 case ‘w‘ :return new Date(Date.parse(dtTmp) + ((86400000 * 7) * Number));
9 case ‘q‘ :return new Date(dtTmp.getFullYear(), (dtTmp.getMonth()) + Number*3, dtTmp.getDate(), dtTmp.getHours(), dtTmp.getMinutes(), dtTmp.getSeconds());
10 case ‘m‘ :return new Date(dtTmp.getFullYear(), (dtTmp.getMonth()) + Number, dtTmp.getDate(), dtTmp.getHours(), dtTmp.getMinutes(), dtTmp.getSeconds());
11 case ‘y‘ :return new Date((dtTmp.getFullYear() + Number), dtTmp.getMonth(), dtTmp.getDate(), dtTmp.getHours(), dtTmp.getMinutes(), dtTmp.getSeconds());
12 }
13 }
(5)比较日期差 dtEnd 格式为日期型或者有效日期格式字符串
1 Date.prototype.DateDiff = function(strInterval, dtEnd) {
2 var dtStart = this;
3 if (typeof dtEnd == ‘string‘ )//如果是字符串转换为日期型
4 {
5 dtEnd = StringToDate(dtEnd);
6 }
7 switch (strInterval) {
8 case ‘s‘ :return parseInt((dtEnd - dtStart) / 1000);
9 case ‘n‘ :return parseInt((dtEnd - dtStart) / 60000);
10 case ‘h‘ :return parseInt((dtEnd - dtStart) / 3600000);
11 case ‘d‘ :return parseInt((dtEnd - dtStart) / 86400000);
12 case ‘w‘ :return parseInt((dtEnd - dtStart) / (86400000 * 7));
13 case ‘m‘ :return (dtEnd.getMonth()+1)+((dtEnd.getFullYear()-dtStart.getFullYear())*12) - (dtStart.getMonth()+1);
14 case ‘y‘ :return dtEnd.getFullYear() - dtStart.getFullYear();
15 }
16 }
(6)日期输出字符串，重载了系统的toString方法
1 Date.prototype.toString = function(showWeek)
2 {
3 var myDate= this;
4 var str = myDate.toLocaleDateString();
5 if (showWeek)
6 {
7 var Week = [‘日‘,‘一‘,‘二‘,‘三‘,‘四‘,‘五‘,‘六‘];
8 str += ‘ 星期‘ + Week[myDate.getDay()];
9 }
10 return str;
11 }
(7)日期合法性验证
格式为：YYYY-MM-DD或YYYY/MM/DD
1 function IsValidDate(DateStr)
2 {
3 var sDate=DateStr.replace(/(^\s+|\s+$)/g,‘‘); //去两边空格;
4 if(sDate==‘‘) return true;
5 //如果格式满足YYYY-(/)MM-(/)DD或YYYY-(/)M-(/)DD或YYYY-(/)M-(/)D或YYYY-(/)MM-(/)D就替换为‘‘
6 //数据库中，合法日期可以是:YYYY-MM/DD(2003-3/21),数据库会自动转换为YYYY-MM-DD格式
7 var s = sDate.replace(/[\d]{ 4,4 }[\-/]{ 1 }[\d]{ 1,2 }[\-/]{ 1 }[\d]{ 1,2 }/g,‘‘);
8 if (s==‘‘) //说明格式满足YYYY-MM-DD或YYYY-M-DD或YYYY-M-D或YYYY-MM-D
9 {
10 var t=new Date(sDate.replace(/\-/g,‘/‘));
11 var ar = sDate.split(/[-/:]/);
12 if(ar[0] != t.getYear() || ar[1] != t.getMonth()+1 || ar[2] != t.getDate())
13 {
14 //alert(‘错误的日期格式！格式为：YYYY-MM-DD或YYYY/MM/DD。注意闰年。‘);
15 return false;
16 }
17 }
18 else
19 {
20 //alert(‘错误的日期格式！格式为：YYYY-MM-DD或YYYY/MM/DD。注意闰年。‘);
21 return false;
22 }
23 return true;
24 }
(8)日期时间检查
1 function CheckDateTime(str)
2 {
3 var reg = /^(\d+)-(\d{ 1,2 })-(\d{ 1,2 }) (\d{ 1,2 }):(\d{ 1,2 }):(\d{ 1,2 })$/;
4 var r = str.match(reg);
5 if(r==null)return false;
6 r[2]=r[2]-1;
7 var d= new Date(r[1],r[2],r[3],r[4],r[5],r[6]);
8 if(d.getFullYear()!=r[1])return false;
9 if(d.getMonth()!=r[2])return false;
10 if(d.getDate()!=r[3])return false;
11 if(d.getHours()!=r[4])return false;
12 if(d.getMinutes()!=r[5])return false;
13 if(d.getSeconds()!=r[6])return false;
14 return true;
15 }
(9)把日期分割成数组
1 Date.prototype.toArray = function()
2 {
3 var myDate = this;
4 var myArray = Array();
5 myArray[0] = myDate.getFullYear();
6 myArray[1] = myDate.getMonth();
7 myArray[2] = myDate.getDate();
8 myArray[3] = myDate.getHours();
9 myArray[4] = myDate.getMinutes();
10 myArray[5] = myDate.getSeconds();
11 return myArray;
12 }
(10)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
1 Date.prototype.DatePart = function(interval)
2 {
3 var myDate = this;
4 var partStr=‘‘;
5 var Week = [‘日‘,‘一‘,‘二‘,‘三‘,‘四‘,‘五‘,‘六‘];
6 switch (interval)
7 {
8 case ‘y‘ :partStr = myDate.getFullYear();break;
9 case ‘m‘ :partStr = myDate.getMonth()+1;break;
10 case ‘d‘ :partStr = myDate.getDate();break;
11 case ‘w‘ :partStr = Week[myDate.getDay()];break;
12 case ‘ww‘ :partStr = myDate.WeekNumOfYear();break;
13 case ‘h‘ :partStr = myDate.getHours();break;
14 case ‘n‘ :partStr = myDate.getMinutes();break;
15 case ‘s‘ :partStr = myDate.getSeconds();break;
16 }
17 return partStr;
18 }
(11)取得当前日期所在月的最大天数
1 Date.prototype.MaxDayOfDate = function()
2 {
3 var myDate = this;
4 var ary = myDate.toArray();
5 var date1 = (new Date(ary[0],ary[1]+1,1));
6 var date2 = date1.dateAdd(1,‘m‘,1);
7 var result = dateDiff(date1.Format(‘yyyy-MM-dd‘),date2.Format(‘yyyy-MM-dd‘));
8 return result;
9 }
(12)取得当前日期所在周是一年中的第几周
1 Date.prototype.WeekNumOfYear = function()
2 {
3 var myDate = this;
4 var ary = myDate.toArray();
5 var year = ary[0];
6 var month = ary[1]+1;
7 var day = ary[2];
8 document.write(‘< script language=VBScript\> \n‘);
9 document.write(‘myDate = Datue(‘‘+month+‘-‘+day+‘-‘+year+‘‘) \n‘);
10 document.write(‘result = DatePart(‘ww‘, myDate) \n‘);
11 document.write(‘ \n‘);
12 return result;
13 }
(13)字符串转成日期类型
格式 MM/dd/YYYY MM-dd-YYYY YYYY/MM/dd YYYY-MM-dd
1 function StringToDate(DateStr)
2 {
3
4 var converted = Date.parse(DateStr);
5 var myDate = new Date(converted);
6 if (isNaN(myDate))
7 {
8 //var delimCahar = DateStr.indexOf(‘/‘)!=-1?‘/‘:‘-‘;
9 var arys= DateStr.split(‘-‘);
10 myDate = new Date(arys[0],--arys[1],arys[2]);
11 }
12 return myDate;
13 }
若要显示:当前日期加时间(如:2009-06-12 12:00)
1 function CurentTime()
2 {
3 var now = new Date();
4
5 var year = now.getFullYear(); //年
6 var month = now.getMonth() + 1; //月
7 var day = now.getDate(); //日
8
9 var hh = now.getHours(); //时
10 var mm = now.getMinutes(); //分
11
12 var clock = year + "-";
13
14 if(month < 10)
15 clock += "0";
16
17 clock += month + "-";
18
19 if(day < 10)
20 clock += "0";
21
22 clock += day + " ";
23
24 if(hh < 10)
25 clock += "0";
26
27 clock += hh + ":";
28 if (mm < 10) clock += ‘0‘;
29 clock += mm;
30 return(clock);
31 }
时间： 2025-01-10 12:39:41