JS获取时间

JS获取时间

一、JS获取当前时间

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 

二、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 

三、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))/); 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) + ( * Number)); case 'd' :return new Date(Date.parse(dtTmp) + ( * Number)); case 'w' :return new Date(Date.parse(dtTmp) + (( * 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) / ); case 'd' :return parseInt((dtEnd - dtStart) / ); case 'w' :return parseInt((dtEnd - dtStart) / ( * 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 = Datue(''+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; } //---------------------------------------------------  //获取每月第一天 //---------------------------------------------------  function getMonthFirst() { 
    var date = new Date(); date.setDate(1); var month = parseInt(date.getMonth() + 1); var day = date.getDate(); if (month < 10) { 
    month = '0' + month } if (day < 10) { 
    day = '0' + day } return date.getFullYear() + '-' + month + '-' + day; } //--------------------------------------------------- //获取每月最后一天 //---------------------------------------------------  function getMonthLast() { 
    var date = new Date(); var currentMonth = date.getMonth(); var nextMonth = ++currentMonth; var nextMonthFirstDay = new Date(date.getFullYear(), nextMonth, 1); var oneDay = 1000 * 60 * 60 * 24; var lastTime = new Date(nextMonthFirstDay - oneDay); var month = parseInt(lastTime.getMonth() + 1); var day = lastTime.getDate(); if (month < 10) { 
    month = '0' + month } if (day < 10) { 
    day = '0' + day } return date.getFullYear() + '-' + month + '-' + day; }