根据时间获得星期几

[size=x-small]//js 根据时间获得星期几
function getWeekDay(date)
{
if (!date)
{
alert("时间不能为空!");
return ;
}
date = date.replace(/[/-]0?/g, "/");
if (!date.match(/^d{4}/d{1,2}/d{1,2}$/))
{
alert("时间格式有问题!");
return ;
}
var d = new Date(date);
switch(d.getDay())
{
case 1:return "星期一";
case 2:return "星期二";
case 3:return "星期三";
case 4:return "星期四";
case 5:return "星期五";
case 6:return "星期六";
case 0:return "星期日";
default:break;
}
}

//java获取星期几
public static String getDayOfWeek(String dateStr) throws ParseException{
String datestr="";
SimpleDateFormat df = new SimpleDateFormat("yyyy-MM-dd");
Date date = df.parse(dateStr);
Calendar cal = Calendar.getInstance();
cal.setTime(date);
int week = cal.get(Calendar.DAY_OF_WEEK);

switch(week){
case 1: datestr = "星期日";
break;
case 2: datestr = "星期一";
break;
case 3: datestr = "星期二";
break;
case 4: datestr = "星期三";
break;
case 5: datestr = "星期四";
break;
case 6: datestr = "星期五";
break;
case 7: datestr = "星期六";
break;
default: datestr = "";
break;
}

return datestr;
}[/size][size=medium][/size][size=x-large][/size][size=small][/size]

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