Date.prototype.Format = function(fmt) {
	var o = {
		"M+" : this.getMonth() + 1, // 月份
		"d+" : this.getDate(), // 日
		"h+" : this.getHours(), // 小時
		"m+" : this.getMinutes(), // 分
		"s+" : this.getSeconds(), // 秒
		"q+" : Math.floor((this.getMonth() + 3) / 3), // 季度
		"S" : 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;
};

 

Date.prototype.addDays = function(d) {
	this.setDate(this.getDate() + d);
};

Date.prototype.addWeeks = function(w) {
	this.addDays(w * 7);
};

Date.prototype.addMonths = function(m) {
	var d = this.getDate();
	this.setMonth(this.getMonth() + m);

	if (this.getDate() < d)
		this.setDate(0);
};

Date.prototype.addYears = function(y) {
	var m = this.getMonth();
	this.setFullYear(this.getFullYear() + y);

	if (m < this.getMonth()) {
		this.setDate(0);
	}
};
 

// 測試 var now = new Date(); now.addDays(1);//加減日期操作
// alert(now.Format("yyyy-MM-dd"));

Date.prototype.dateDiff = function(interval, endTime) {
	switch (interval) {
	case "s": // 計算秒差
		return parseInt((endTime - this) / 1000);
	case "n": // 計算分差
		return parseInt((endTime - this) / 60000);
	case "h": // 計算時差
		return parseInt((endTime - this) / 3600000);
	case "d": // 計算日差
		return parseInt((endTime - this) / 86400000);
	case "w": // 計算周差
		return parseInt((endTime - this) / (86400000 * 7));
	case "m": // 計算月差
		return (endTime.getMonth() + 1)
				+ ((endTime.getFullYear() - this.getFullYear()) * 12)
				- (this.getMonth() + 1);
	case "y": // 計算年差
		return endTime.getFullYear() - this.getFullYear();
	default: // 輸入有誤
		return undefined;
	}
}

 

/**
 * 需引入 <script src="js/jquery-2.0.3.min.js"></script> <script
 * src="js/bootstrap.min.js"></script>
 */
var start2end = function() {
	var startDate = new Date();
	startDate.setDate(startDate.getDate() - 31);
	$("#startDate").val(startDate.Format("yyyy-MM-dd"));

	var endDate = new Date();
	endDate.setDate(endDate.getDate() - 1);
	$("#endDate").val(endDate.Format("yyyy-MM-dd"));

	$("#startDate").datepicker({
		dateFormat : "yy-mm-dd"
	});
	$("#endDate").datepicker({
		dateFormat : "yy-mm-dd"
	});
};

var start_end = function(gap) {
	var startDate = new Date();
	startDate.setDate(startDate.getDate() - gap);
	$("#startDate").val(startDate.Format("yyyy-MM-dd"));

	var endDate = new Date();
	endDate.setDate(endDate.getDate() - 1);
	$("#endDate").val(endDate.Format("yyyy-MM-dd"));

	$("#startDate").datepicker({
		dateFormat : "yy-mm-dd"
	});
	$("#endDate").datepicker({
		dateFormat : "yy-mm-dd"
	});
};

/**
 * 需引入 <link href="css/datepicker.css" rel="stylesheet"> <script
 * src="js/jquery-2.0.3.min.js"></script> <script
 * src="js/bootstrap-datepicker.js"></script>
 */
var months = function() {
	var today = new Date();
	today.setDate(today.getDate());
	$("#month").val(today.Format("yyyy-MM"));


	$("#month").datepicker({
		format : "yyyy-mm",
		viewMode : 1,
		minViewMode : 1
	});
};

Array.prototype.isInArray = function(e) {
	for (i = 0; i < this.length; i++) {
		if (this[i] == e)
		return true;
	}
	return false;
}

Number.prototype.toPercent = function(){
	return (Math.round(this * 10000)/100).toFixed(2) + '%';
}

var getDate = function(time){
        var date = new Date(time);
        var dt = date.getFullYear() +"-"+(date.getMonth()+1)+"-"+date.getDate();
        return dt;
};


var  getMsc = function(yyyy,mm,dd){
    var date = new Date(yyyy,mm-1,dd);
    return date.getTime();
};


var t1 = getMsc(2014,6,10);
var t2 = getMsc(2014,6,22);