zui
Version:
一个基于 Bootstrap 深度定制开源前端实践方案,帮助你快速构建现代跨屏应用。
248 lines (215 loc) • 6.4 kB
JavaScript
/* ========================================================================
* ZUI: date.js
* Date polyfills
* http://zui.sexy
* ========================================================================
* Copyright (c) 2014 cnezsoft.com; Licensed MIT
* ======================================================================== */
(function() {
'use strict';
/**
* Ticks of a whole day
* @type {number}
*/
Date.ONEDAY_TICKS = 24 * 3600 * 1000;
/**
* Format date to a string
*
* @param string format
* @return string
*/
if(!Date.prototype.format) {
Date.prototype.format = function(format) {
var date = {
'M+': this.getMonth() + 1,
'd+': this.getDate(),
'h+': this.getHours(),
'm+': this.getMinutes(),
's+': this.getSeconds(),
'q+': Math.floor((this.getMonth() + 3) / 3),
'S+': this.getMilliseconds()
};
if(/(y+)/i.test(format)) {
format = format.replace(RegExp.$1, (this.getFullYear() + '').substr(4 - RegExp.$1.length));
}
for(var k in date) {
if(new RegExp('(' + k + ')').test(format)) {
format = format.replace(RegExp.$1, RegExp.$1.length == 1 ? date[k] : ('00' + date[k]).substr(('' + date[k]).length));
}
}
return format;
};
}
/**
* Add milliseconds to the date
* @param {number} value
*/
if(!Date.prototype.addMilliseconds) {
Date.prototype.addMilliseconds = function(value) {
this.setTime(this.getTime() + value);
return this;
};
}
/**
* Add days to the date
* @param {number} days
*/
if(!Date.prototype.addDays) {
Date.prototype.addDays = function(days) {
this.addMilliseconds(days * Date.ONEDAY_TICKS);
return this;
};
}
/**
* Clone a new date instane from the date
* @return {Date}
*/
if(!Date.prototype.clone) {
Date.prototype.clone = function() {
var date = new Date();
date.setTime(this.getTime());
return date;
};
}
/**
* Judge the year is in a leap year
* @param {integer} year
* @return {Boolean}
*/
if(!Date.isLeapYear) {
Date.isLeapYear = function(year) {
return(((year % 4 === 0) && (year % 100 !== 0)) || (year % 400 === 0));
};
}
if(!Date.getDaysInMonth) {
/**
* Get days number of the date
* @param {integer} year
* @param {integer} month
* @return {integer}
*/
Date.getDaysInMonth = function(year, month) {
return [31, (Date.isLeapYear(year) ? 29 : 28), 31, 30, 31, 30, 31, 31, 30, 31, 30, 31][month];
};
}
/**
* Judge the date is in a leap year
* @return {Boolean}
*/
if(!Date.prototype.isLeapYear) {
Date.prototype.isLeapYear = function() {
return Date.isLeapYear(this.getFullYear());
};
}
/**
* Clear time part of the date
* @return {date}
*/
if(!Date.prototype.clearTime) {
Date.prototype.clearTime = function() {
this.setHours(0);
this.setMinutes(0);
this.setSeconds(0);
this.setMilliseconds(0);
return this;
};
}
/**
* Get days of this month of the date
* @return {integer}
*/
if(!Date.prototype.getDaysInMonth) {
Date.prototype.getDaysInMonth = function() {
return Date.getDaysInMonth(this.getFullYear(), this.getMonth());
};
}
/**
* Add months to the date
* @param {date} value
*/
if(!Date.prototype.addMonths) {
Date.prototype.addMonths = function(value) {
var n = this.getDate();
this.setDate(1);
this.setMonth(this.getMonth() + value);
this.setDate(Math.min(n, this.getDaysInMonth()));
return this;
};
}
/**
* Get last week day of the date
* @param {integer} day
* @return {date}
*/
if(!Date.prototype.getLastWeekday) {
Date.prototype.getLastWeekday = function(day) {
day = day || 1;
var d = this.clone();
while(d.getDay() != day) {
d.addDays(-1);
}
d.clearTime();
return d;
};
}
/**
* Judge the date is same day as another date
* @param {date} date
* @return {Boolean}
*/
if(!Date.prototype.isSameDay) {
Date.prototype.isSameDay = function(date) {
return date.toDateString() === this.toDateString();
};
}
/**
* Judge the date is in same week as another date
* @param {date} date
* @return {Boolean}
*/
if(!Date.prototype.isSameWeek) {
Date.prototype.isSameWeek = function(date) {
var weekStart = this.getLastWeekday();
var weekEnd = weekStart.clone().addDays(7);
return date >= weekStart && date < weekEnd;
};
}
/**
* Judge the date is in same year as another date
* @param {date} date
* @return {Boolean}
*/
if(!Date.prototype.isSameYear) {
Date.prototype.isSameYear = function(date) {
return this.getFullYear() === date.getFullYear();
};
}
/**
* Create an date instance with string, timestamp or date instance
* @param {Date|String|Number} date
* @return {Date}
*/
if (!Date.create) {
Date.create = function(date) {
if (!(date instanceof Date)) {
if (typeof date === 'number' && date < 10000000000) {
date *= 1000;
}
date = new Date(date);
}
return date;
};
}
if (!Date.timestamp) {
Date.timestamp = function(date) {
if (typeof date === 'number') {
if (date < 10000000000) {
date *= 1000;
}
} else {
date = Date.create(date).getTime();
}
return date;
};
}
}());