java 和javascript 獲取當前日期時間和本週日期時間 .
阿新 • • 發佈：2019-01-29
import java.util.Calendar;
public class Test {
public static void main(String[] args) {
Calendar cal =Calendar.getInstance();
SimpleDateFormat df = new SimpleDateFormat("yyyy-MM-dd");
cal.set(Calendar.DAY_OF_WEEK, Calendar.MONDAY); //獲取本週一的日期
System.out.println(df.format(cal.getTime()));
//這種輸出的是上個星期週日的日期，因為老外那邊把週日當成第一天
cal.set(Calendar.DAY_OF_WEEK, Calendar.SUNDAY);
//增加一個星期，才是我們中國人理解的本週日的日期
cal.add(Calendar.WEEK_OF_YEAR, 1);
System.out.println(df.dateFormat(cal.getTime()));
}
}<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<title>獲取當前周</title>
</head>
<body>
</body>
</html>
<script type="text/javascript">
function test(){
var date=new Date();
var date2=new Date();
var day=date.getDay();
var ms=date.getMilliseconds();
var Mon,Sun;
var tmp=1000*60*60*24;
switch(day){
case 0:
Mon=ms-6*tmp;
Sun=ms;
break;
case 1:
Mon=ms;
Sun=ms+6*tmp;
break;
case 2:
Mon=ms-1*tmp;
Sun=ms+5*tmp;
break;
case 3:
Mon=ms-2*tmp;
Sun=ms+4*tmp;
break;
case 4:
Mon=ms-3*tmp;
Sun=ms+3*tmp;
break;
case 5:
Mon=ms-4*tmp;
Sun=ms+2*tmp;
break;
case 6:
Mon=ms-5*tmp;
Sun=ms+1*tmp;
break;
}
date.setMilliseconds(Mon);
document.write("週一"+date.getFullYear()+"-"+(date.getMonth()+1)+"-"+date.getDate()+"<br />");
document.write("週二"+date.getFullYear()+"-"+(date.getMonth()+1)+"-"+(date.getDate()+1)+"<br />");
document.write("週三"+date.getFullYear()+"-"+(date.getMonth()+1)+"-"+(date.getDate()+2)+"<br />");
document.write("週四"+date.getFullYear()+"-"+(date.getMonth()+1)+"-"+(date.getDate()+3)+"<br />");
document.write("週五"+date.getFullYear()+"-"+(date.getMonth()+1)+"-"+(date.getDate()+4)+"<br />");
document.write("週六"+date.getFullYear()+"-"+(date.getMonth()+1)+"-"+(date.getDate()+5)+"<br />");
date2.setMilliseconds(Sun);
document.write("週日"+date2.getFullYear()+"-"+(date2.getMonth()+1)+"-"+date2.getDate());
}
test()
</script>