web前端|js教程
Js,当前日期,时间
web前端-js教程
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
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日期时间脚本库方法列表
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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
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//--------------------------------------------------- // 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(): + (this.getYear() % 100)); str=str.replace(/MM/,this.getMonth()>9?this.getMonth().toString(): + 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(): + this.getDate()); str=str.replace(/d|D/g,this.getDate()); str=str.replace(/hh|HH/,this.getHours()>9?this.getHours().toString(): + this.getHours()); str=str.replace(/h|H/g,this.getHours()); str=str.replace(/mm/,this.getMinutes()>9?this.getMinutes().toString(): + this.getMinutes()); str=str.replace(/m/g,this.getMinutes()); str=str.replace(/ss|SS/,this.getSeconds()>9?this.getSeconds().toString(): + 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 :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 :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(-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 :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( \n); document.write(myDate = DateValue(\+month+-+day+-+year+\) \n); document.write( esult = 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; }
