sr-iHealthApp/html/tuandui/js/get-date.js

(function ( $, w) {
	var d = {
		nowYear: '',
		nowMonth: '',
		nowDay: '',
		nowDayOfWeek: '',
		isNextM: false,
		init: function (type) {
			var now = new Date(),
				getDate = '';
			this.isNextM = false;
			this.nowYear = now.getFullYear();
			this.nowMonth = now.getMonth();
			this.nowDay = now.getDate();
			this.nowDayOfWeek = now.getDay()==0?7:now.getDay();
			switch (type) {
				case 1:
					getDate = this.getWeekStartDate();
					break;
				case 2:
					getDate = this.getWeekEndDate();
					break;
				case 3:
					getDate = this.getMonthStartDate();
					break;
				case 4:
					getDate = this.getMonthEndDate();
					break;
				case 5:
					getDate = this.getDateRange(1);
					break;
				case 6:
					getDate = this.getDateRange(2);
					break;
			}
			return getDate;
		},
		getWeekStartDate: function () { //获得本周的开始日期
			var weekStartDate = new Date(this.nowYear, this.nowMonth, this.nowDay - this.nowDayOfWeek + 1); 
			return this.formatDate(weekStartDate); 
		},
		getWeekEndDate: function () { //获得本周的结束日期 
			var weekEndDate = new Date(this.nowYear, this.nowMonth, this.nowDay + (6 - this.nowDayOfWeek + 1)); 
			return this.formatDate(weekEndDate); 
		},
		getMonthStartDate: function (){//获得本月的开始日期 
			var monthStartDate = new Date(this.nowYear, this.nowMonth, 1); 
			return this.formatDate(monthStartDate); 
		},
		getMonthEndDate: function () {//获得本月的结束日期  
			var monthEndDate = new Date(this.nowYear, this.nowMonth, this.getMonthDays(this.nowMonth)); 
			return this.formatDate(monthEndDate); 
		},
		getMonthDays: function (myMonth) { //获得某月的天数 
			var monthStartDate = new Date(this.nowYear, myMonth, 1); 
			var monthEndDate = new Date(this.nowYear, myMonth + 1, 1); 
			var days = (monthEndDate - monthStartDate)/(1000 * 60 * 60 * 24); 
			return days; 
		},
		getWeeksNum: function (){//获取一个月有几周
			var day=new Date(),
				lastCurDay = new Date(day.getFullYear(), day.getMonth() + 1, 0),//获取当前月最后一天时间
				a = lastCurDay.getFullYear(),
				b = lastCurDay.getMonth(),
				c = lastCurDay.getDate();
		    var date = new Date(a, b, c), 
			    w = date.getDay(), 
			    d = date.getDate();
		    return Math.ceil(
		        (d + 6 - w) / 7
		    );
		},
		getYear: function () {//获取签约年
			var nd = new Date(),
				year = nd.getFullYear(),
				cd = new Date( year + '', '06', '30', '23', '59', '59');
			if (nd.getTime() <= cd.getTime()) {
				year -= 1;
			}
			return year;
		},
		getDateRange: function (n) {//获取本周的所有日期
			var startDate =  new Date(this.nowYear, this.nowMonth, this.nowDay - this.nowDayOfWeek),
				arr = [];
			for (var i = 1; i <= 7; i++) {
				startDate.setDate(startDate.getDate() + 1);
				var d = [];
				if (n == 2) {
					d = this.formatDateT( startDate, i);
				} 
				if (n == 1) {
					d = this.formatDate( startDate, i);
				}
				arr.push(d);
			}
			return arr;
		},
		formatDateT: function ( data, i) {
			var nd = new Date(),
				myMonth = data.getMonth() + 1,
				myDate = data.getDate();
			if (myMonth < 10) {
				myMonth = '0' + myMonth;
			}
			if (i == 1) {
				myMonth += '月'
			} else {
				var m1 = nd.getMonth() + 1,
					m2 = data.getMonth() + 1;
				if (!this.isNextM) {
					if (m1 < m2) {
						this.isNextM = true;
						myMonth += '月'
					} else {
						myMonth = '';	
					}
				} else {
					myMonth = '';	
				}
			}
			if (myDate < 10) {
				myDate = '0' + myDate;
			}
			return myMonth + myDate;
		},
		formatDate: function (date) {
			var myYear = date.getFullYear(),
				myMonth = date.getMonth() + 1,
				myDate = date.getDate();
			if (myMonth < 10) {
				myMonth = '0' + myMonth;
			}
			if (myDate < 10) {
				myDate = '0' + myDate;
			}
			return myYear + '-' + myMonth + '-' + myDate;
		}
	};
	w.$d = d;
})( jQuery, window);