JS时间处理脚本 总结

Js代码   --- (转载)
/** 
* 获取本周、本季度、本月、上月的开端日期、停止日期 
*/ 
var now = new Date(); //当前日期 
var nowDayOfWeek = now.getDay(); //今天本周的第几天 
var nowDay = now.getDate(); //当前日 
var nowMonth = now.getMonth(); //当前月 
var nowYear = now.getYear(); //当前年 
nowYear += (nowYear < 2000) ? 1900 : 0; //

var lastMonthDate = new Date(); //上月日期 
lastMonthDate.setDate(1); 
lastMonthDate.setMonth(lastMonthDate.getMonth()-1); 
var lastYear = lastMonthDate.getYear(); 
var lastMonth = lastMonthDate.getMonth();

//格局化日期:yyyy-MM-dd 
function formatDate(date) { 
var myyear = date.getFullYear(); 
var mymonth = date.getMonth()+1; 
var myweekday = date.getDate();

if(mymonth < 10){ 
mymonth = "0" + mymonth; 

if(myweekday < 10){ 
myweekday = "0" + myweekday; 

return (myyear+"-"+mymonth + "-" + myweekday); 
}

//获得某月的天数 
function getMonthDays(myMonth){ 
var monthStartDate = new Date(nowYear, myMonth, 1); 
var monthEndDate = new Date(nowYear, myMonth + 1, 1); 
var days = (monthEndDate - monthStartDate)/(1000 * 60 * 60 * 24); 
return days; 
}

//获得本季度的开端月份 
function getQuarterStartMonth(){ 
var quarterStartMonth = 0; 
if(nowMonth<3){ 
quarterStartMonth = 0; 

if(2<nowMonth && nowMonth<6){ 
quarterStartMonth = 3; 

if(5<nowMonth && nowMonth<9){ 
quarterStartMonth = 6; 

if(nowMonth>8){ 
quarterStartMonth = 9; 

return quarterStartMonth; 
}

//获得本周的开端日期 
function getWeekStartDate() { 
var weekStartDate = new Date(nowYear, nowMonth, nowDay - nowDayOfWeek); 
return formatDate(weekStartDate); 
}

//获得本周的停止日期 
function getWeekEndDate() { 
var weekEndDate = new Date(nowYear, nowMonth, nowDay + (6 - nowDayOfWeek)); 
return formatDate(weekEndDate); 
}

//获得本月的开端日期 
function getMonthStartDate(){ 
var monthStartDate = new Date(nowYear, nowMonth, 1); 
return formatDate(monthStartDate); 
}

//获得本月的停止日期 
function getMonthEndDate(){ 
var monthEndDate = new Date(nowYear, nowMonth, getMonthDays(nowMonth)); 
return formatDate(monthEndDate); 
}

//获得上月开端时候 
function getLastMonthStartDate(){ 
var lastMonthStartDate = new Date(nowYear, lastMonth, 1); 
return formatDate(lastMonthStartDate); 
}

//获得上月停止时候 
function getLastMonthEndDate(){ 
var lastMonthEndDate = new Date(nowYear, lastMonth, getMonthDays(lastMonth)); 
return formatDate(lastMonthEndDate); 
}

//获得本季度的开端日期 
function getQuarterStartDate(){

var quarterStartDate = new Date(nowYear, getQuarterStartMonth(), 1); 
return formatDate(quarterStartDate); 
}

//或的本季度的停止日期 
function getQuarterEndDate(){ 
var quarterEndMonth = getQuarterStartMonth() + 2; 
var quarterStartDate = new Date(nowYear, quarterEndMonth, getMonthDays(quarterEndMonth)); 
return formatDate(quarterStartDate); 




/* ***********************************************************************************************************************

界面显示的需求  ==  获取当前日    --  周  ---  月 

复制黏贴之后即可运行

<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<title>无标题文档</title>
<script language="javascript" type="text/javascript">
	var now = new Date(); //当前日期 
	var nowDayOfWeek = now.getDay(); //今天本周的第几天 
	var nowDay = now.getDate(); //当前日 
	var nowMonth = now.getMonth(); //当前月 
	var nowYear = now.getYear(); //当前年 
	nowYear += (nowYear < 2000) ? 1900 : 0; //
	
	function getDate(){
		var myDate = new Date();
		alert(formatDate(myDate));
	}
	function getWeek(){
		var weekStartDate = new Date(nowYear, nowMonth, nowDay - nowDayOfWeek); 
		var weekEndDate = new Date(nowYear, nowMonth, nowDay + (6 - nowDayOfWeek)); 
		alert(formatDate(weekStartDate) + "  |  " +  formatDate(weekEndDate)); 
	}
	function getMonth(){
		var monthStartDate = new Date(nowYear, nowMonth, 1); 
		var monthEndDate = new Date(nowYear, nowMonth, getMonthDays(nowMonth));
		alert( formatDate(monthStartDate) + "  |  " +  formatDate(monthEndDate) ); 
	}
	
	function getMonthDays(myMonth){ 
		var monthStartDate = new Date(nowYear, myMonth, 1); 
		var monthEndDate = new Date(nowYear, myMonth + 1, 1); 
		var days = (monthEndDate - monthStartDate)/(1000 * 60 * 60 * 24); 
		return days; 
	}
	function formatDate(date) { 
		var myyear = date.getFullYear(); 
		var mymonth = date.getMonth()+1; 
		var myweekday = date.getDate();
	
		if(mymonth < 10){ 
			mymonth = "0" + mymonth; 
		} 
		if(myweekday < 10){ 
			myweekday = "0" + myweekday; 
		} 
		return (myyear+"-"+mymonth + "-" + myweekday); 
	}
</script>
</head>

<body>
<input type="button" onclick="getDate()" value="getdate" />
<input type="button" onclick="getWeek()" value="getWeek" />
<input type="button" onclick="getMonth()" value="getMonth" />
</body>
</html>


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