更新说明

1. 加入了String类型的扩展成员 convertToDate() 可以直接将 字符串格式的日期转换为Date对象。
2. 加入了String类型的扩展成员 convertToTimeSpan() 可以将 字符串格式的日期转换为TimeSpan对象。
3. 修复了日期格式化为字符串的format函数中的bug。

tinydate.js v0.3

Date.prototype.format = function (fmt) {var o = {"M+": this.getMonth() + 1,                 //月份 "d+": this.getDate(),                    //日 "H+": this.getHours(),                   //小时 "m+": this.getMinutes(),                 //分 "s+": this.getSeconds(),                 //秒 "q+": Math.floor((this.getMonth() + 3) / 3), //季度 "f+": this.getMilliseconds()             //毫秒 };if (/(y+)/.test(fmt)) {fmt = fmt.replace(RegExp.$1, (this.getFullYear() + "").substr(4 - RegExp.$1.length));}for (var k in o) {if (new RegExp("(" + k + ")").test(fmt)) {fmt = fmt.replace(RegExp.$1, (RegExp.$1.length == 1) ? (o[k]) : (("00" + o[k]).substr(("" + o[k]).length)));}}return fmt;
}
//当前完整时间
Date.$nowDate = new Date().format("yyyy-MM-dd HH:mm:ss.ffff");
//获取自定义格式的当前时间
Date.$now = function (fmt) {return new Date().format(fmt);
}
//计算时间差
Date.diff = function (sDate, eDate) {if (eDate == undefined || eDate == null)eDate = new Date();var stime = sDate.getTime();var etime = eDate.getTime();var diffTime = etime - stime;var timeSpan = new TimeSpan(diffTime);return timeSpan;
}
//添加年
Date.prototype.addYear = function (number) {this.setFullYear(this.getFullYear() + number);
}
//添加月
Date.prototype.addMonth = function (number){this.setMonth(this.getMonth()+number);
}
//添加日
Date.prototype.addDate = function (number){this.setDate(this.getDate()+number);
}
//添加小时
Date.prototype.addHours = function (number){this.setHours(this.getHours()+number);
}
//添加分
Date.prototype.addMinutes = function (number){this.setMinutes(this.getMinutes()+number);
}
//添加秒
Date.prototype.addSeconds = function (number){this.setSeconds(this.getSeconds()+number);
}
//添加毫秒
Date.prototype.addMilliseconds = function (number){this.setMilliseconds(this.getMilliseconds()+number);
}//获得一年中第一天的日期
Date.prototype.getTheFirstDateOfTheYear = function (date) {var year, month=0, day=1;if (date == undefined || date == null) {year = this.getFullYear();}else {year = date.getFullYear();}return new Date(year, month, day);
}
//获得一年中最后一天的日期
Date.prototype.getTheLastDateOfTheYear = function (date) {var year, month = 11, day = 31;if (date == undefined || date == null) {year = this.getFullYear();}else {year = date.getFullYear();}return new Date(year, month, day);
}
//格式化当前日期 为 时限对象
Date.prototype.timeSpan = function () {return new TimeSpan(this);
}
//时限对象
function TimeSpan() {var o = new Object();o.year = 0;//年o.month = 0;//月o.day = 0;//日o.hours = 0;//时o.minutes = 0;//分o.seconds = 0;//秒o.milliseconds = 0;//毫秒o.totalYear = 0.00;//从时间原点的年o.totalMonth = 0.00;//从时间原点到现在的月o.totalDay = 0.00;//从时间原点到现在的天o.totalHours = 0.00;//从时间原点到现在的小时o.totalMinutes = 0.00;//从时间原点到现在的分o.totalSeconds = 0.00;//从时间原点到现在的秒o.totalMilliseconds = 0.00;//从时间原点到现在的毫秒//初始化对象o.init = function (timestamp) {var odate = new Date(timestamp);o.year = odate.getFullYear();o.month = odate.getMonth() + 1;o.day = odate.getDate();o.hours = odate.getHours();o.minutes = odate.getMinutes();o.seconds = odate.getSeconds();o.milliseconds = odate.getMilliseconds();o.totalMilliseconds = timestamp;o.totalSeconds = (timestamp / 1000).toFixed(2);o.totalMinutes = (timestamp / 1000 / 60).toFixed(2);o.totalHours = (timestamp / 1000 / 60 / 60).toFixed(2);o.totalDay = (timestamp / 1000 / 60 / 60 / 24).toFixed(2);o.totalMonth = o.year * 12;o.totalYear = o.year;}//无参则返回空对象if (arguments.length == 0) {}else if (typeof (arguments[0]) === "string") {o.init(new Date(arguments[0]));}else if (typeof (arguments[0]) === "number") {o.init(arguments[0]);} else if (typeof(arguments[0]) === "object") {o.init(arguments[0]);}return o;
}//字符串转换为Date
String.prototype.convertToDate = function () {return new Date(Date.parse(this.replace(/-/g, "/")));
}//字符串转换为TimeSpan
String.prototype.convertToTimeSpan = function () {return new TimeSpan(new Date(Date.parse(this.replace(/-/g, "/"))));
}

点此下载： tinydate_0.3.js