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日期函数详解

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1、日期的内置函数

<!doctype html>
<html>
 <head>
	<!--声明当前页面的编码集:charset=gbk,gb2312(中文编码),utf-8国际编码-->
	<meta http-equiv="Content-Type" content="text/html; charset=utf-8">
	<!--当前页面的三要素-->
	<title>日期函数</title>
	<meta name="Keywords" content="关键词,关键词">
	<meta name="description" content="">
	<script type="text/javascript" src="sgutil.js"></script>
 </head>
 <body>
	<script type="text/javascript">
		//创建一个日期对象
		var d = new Date();
		//获取年份
		var year = d.getFullYear();
		//获取月份,返回的值是0-11
		var month = d.getMonth() + 1;
		//获取日期
		var date = d.getDate();
		//获取小时
		var hour = d.getHours();
		//获取分钟
		var min = d.getMinutes();
		//获取秒数
		var sec = d.getSeconds();
		//获取毫秒
		var msec = d.getMilliseconds();
		//获取星期数
		var day = d.getDay();
		if(day == 0) {
			day = "星期日";
		}else if(day == 1) {
			day = "星期一";
		}else if(day == 2) {
			day = "星期二";
		}else if(day == 3) {
			day = "星期三";
		}else if(day == 4) {
			day = "星期四";
		}else if(day == 5) {
			day = "星期五";
		}else if(day == 6) {
			day = "星期六";
		}
		//2015-11-19 15:30:03.333 星期四
		document.write(year+"-"+month+"-"+date+" "+hour+":"+min+":"+sec+"."+msec+" "+day+"</br>"); 
		document.write(d.format("yyyy-MM-dd hh:mm:ss.S"+"</br>"));   //2015-11-19 03:30:03.333
		document.write(d.format("yyyy-MM-dd HH:mm:ss.S"+"</br>"));   //2015-11-19 15:30:03.333
		document.write(d.format("yyyy-MM-dd HH:mm:ss E"+"</br>"));   //2015-11-19 15:30:03 四
		document.write(d.format("yyyy-MM-dd HH:mm:ss EE"+"</br>"));  //2015-11-19 15:30:03 周四
		document.write(d.format("yyyy-MM-dd HH:mm:ss EEE"+"</br>")); //2015-11-19 15:30:03 星期四
	</script>
 </body>
</html>

 

 

 

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