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【转】js日期时间函数
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+$)/g,''); //去两边空格;
- • if(sDate=='') return true;
- • //如果格式满足YYYY-(/)MM-(/)DD或YYYY-(/)M-(/)DD或YYYY-(/)M-(/)D或YYYY-(/)MM-(/)D就替换为''
- • //数据库中,合法日期可以是:YYYY-MM/DD(2003-3/21),数据库会自动转换为YYYY-MM-DD格式
- • var s = sDate.replace(/[\d]{ 4,4 }[\-/]{ 1 }[\d]{ 1,2 }[\-/]{ 1 }[\d]{ 1,2 }/g,'');
- • if (s=='') //说明格式满足YYYY-MM-DD或YYYY-M-DD或YYYY-M-D或YYYY-MM-D
- • {
- • var t=new Date(sDate.replace(/\-/g,'/'));
- • var ar = sDate.split(/[-/:]/);
- • if(ar[0] != t.getYear() || ar[1] != t.getMonth()+1 || ar[2] != t.getDate())
- • {
- • //alert('错误的日期格式!格式为:YYYY-MM-DD或YYYY/MM/DD。注意闰年。');
- • return false;
- • }
- • }
- • else
- • {
- • //alert('错误的日期格式!格式为:YYYY-MM-DD或YYYY/MM/DD。注意闰年。');
- • return false;
- • }
- • return true;
- •}
- •
- •//+---------------------------------------------------
- •//| 日期时间检查
- •//| 格式为:YYYY-MM-DD HH:MM:SS
- •//+---------------------------------------------------
- •function CheckDateTime(str)
- •{
- • var reg = /^(\d+)-(\d{ 1,2 })-(\d{ 1,2 }) (\d{ 1,2 }):(\d{ 1,2 }):(\d{ 1,2 })$/;
- • 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;
- •}
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