JS 对时间的操作
1.JS获取当前时间
var date=new Date(); date.getFullYear();//获取年份(---2013) date.getYear(); //获取当前年份(---13) date.getMonth(); //获取当前月份(0-11,0代表1月) date.getDate(); //获取当前日(0-31) date.getDay(); //获取当前星期日(0-6,0代表周日) date.getTime(); //获取当前时间() date.getHours(); //获取当前小时数(0-23) date.getMinutes(); //获取当前分钟数(0-59) date.getSeconds(); //获取当前秒数(0-59) date.getMilliseconds(); //获取当前毫秒数 (0-999) date.toLocaleDateString(); //获取当前日期 date.toLocaleTimeString(); //获取当前时间 date.toLocaleString( ); //获取日期与时间
2.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
3.日期格式化
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; }
4.计算两个时间的相差天数
------------------------------------- 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); } //某个时间加上某个天数 $(function() { var date = new Date(); date.setDate(date.getDate() + 30); var endDate = date.getFullYear() + "-" + (date.getMonth()+1) + "-" + date.getDate(); $("#dateEnd").val(endDate); });
5.取得‘2013-09-03’的格式
var Year = date.getFullYear(); var Month = date.getMonth() + 1; var Day = date.getDay(); var str = Year + "-"; if (Month < 10) { str += "0" + Month + "-"; } else { str += Month + "-"; } if (Day < 10) { str += "0" + Day; } else { str += Day; }
6.日期验证
--------------------------------------------------- 格式为:YYYY-MM-DD或YYYY/MM/DD --------------------------------------------------- function IsValidDate(DateStr) { var sDate=DateStr.replace(/(^\s+|\s+$)/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; }
7.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 })$/; var r = str.match(reg); if(r==null)return false; r[2]=r[2]-1; var d= new Date(r[1],r[2],r[3],r[4],r[5],r[6]); if(d.getFullYear()!=r[1])return false; if(d.getMonth()!=r[2])return false; if(d.getDate()!=r[3])return false; if(d.getHours()!=r[4])return false; if(d.getMinutes()!=r[5])return false; if(d.getSeconds()!=r[6])return false; return true; }
8.把日期分割成数组
Date.prototype.toArray = function() { var myDate = this; var myArray = Array(); myArray[0] = myDate.getFullYear(); myArray[1] = myDate.getMonth(); myArray[2] = myDate.getDate(); myArray[3] = myDate.getHours(); myArray[4] = myDate.getMinutes(); myArray[5] = myDate.getSeconds(); return myArray; }
9.取得当前日期所在月的最大天数
Date.prototype.MaxDayOfDate = function() { var myDate = this; var ary = myDate.toArray(); var date1 = (new Date(ary[0],ary[1]+1,1)); var date2 = date1.dateAdd(1,'m',1); var result = dateDiff(date1.Format('yyyy-MM-dd'),date2.Format('yyyy-MM-dd')); return result; }
10.取得当前日期所在周是一年中的第几周
Date.prototype.WeekNumOfYear = function() { var myDate = this; var ary = myDate.toArray(); var year = ary[0]; var month = ary[1]+1; var day = ary[2]; document.write('< script language=VBScript\> \n'); document.write('myDate = Datue(''+month+'-'+day+'-'+year+'') \n'); document.write('result = DatePart('ww', myDate) \n'); document.write(' \n'); return result; }
11.字符串转成日期类型
--------------------------------------------------- 格式 MM/dd/YYYY MM-dd-YYYY YYYY/MM/dd YYYY-MM-dd --------------------------------------------------- function StringToDate(DateStr) { var converted = Date.parse(DateStr); var myDate = new Date(converted); if (isNaN(myDate)) { //var delimCahar = DateStr.indexOf('/')!=-1?'/':'-'; var arys= DateStr.split('-'); myDate = new Date(arys[0],--arys[1],arys[2]); } return myDate; }
12.javascript将字符串类型转换成日期进行比较
第一种适用于:20100823这种字符串格式 function dateValid(){ var bd = document.getElementById("sStartSaveDate").value; var beginDate = new Date(bd.replace(/^(\d{4})(\d{2})(\d{2})$/,"$1/$2/$3")); var ed = document.getElementById("sEndSaveDate").value; var endDate = new Date(ed.replace(/^(\d{4})(\d{2})(\d{2})$/,"$1/$2/$3")); if(beginDate >= endDate){ alert("结束时间必须大于开始时间!"); return false; }else{ document.getElementById('searchform').submit(); } } 第二种适用于:2010-08-23这种字符串格式 function dateValid(){ var beginDate = new Date(document.getElementById("sStartSaveDate").value.replace(/-/g,"/")); var endDate = new Date(document.getElementById("sEndSaveDate").value.replace(/-/g,"/")); if(beginDate >= endDate){ alert("结束时间必须大于开始时间!"); return false; }else{ document.getElementById('searchform').submit(); } 第三种适用于:2010/08/23这种字符串格式 function dateValid(){ var beginDate = new Date(document.getElementById("sStartSaveDate").value); var endDate = new Date(document.getElementById("sEndSaveDate").value); if(beginDate >= endDate){ alert("结束时间必须大于开始时间!"); return false; }else{ document.getElementById('searchform').submit(); } }
13.日期格式验证
//判断日期格式符合YYYY-MM-DD HH:mm:ss var re = /^\d{4}-(0\d|1[0-2])-([0-2]\d|3[01])( ([01]\d|2[0-3])\:[0-5]\d\:[0-5]\d)?$/; //判断日期格式符合YYYY-MM-DD var re = /^[0-9]{4}-[0-1]?[0-9]{1}-[0-3]?[0-9]{1}$/;