日期:2014-05-16  浏览次数:20444 次

js Date对象扩展

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));??
??????