java和js获取当月的第一天和最后一天

JavaScript 获取：

获取第一天

var myDate = new Date();

var year = myDate.getFullYear();

var month = myDate.getMonth()+1;

if (month<10){

month = "0"+month;

}

var firstDay = month+"/"+"01/"+year;

获取最后一天

myDate = new Date(year,month,0);

var lastDay = month+"/"+myDate.getDate()+"/"+year;

var firstTime = "00:00:00";

var lastTime = "23:59:59";

Java 获取

Calendar curCal = Calendar.getInstance();

SimpleDateFormat datef;

获取当月最后一天

curCal.set(Calendar.DATE, 1);

curCal.roll(Calendar.DATE, -1);

Date endTime = curCal.getTime();

String eTime = datef.format(endTime) + " 23:59:59";

获取当月第一天

curCal.set(Calendar.DAY_OF_MONTH, 1);

Date beginTime = curCal.getTime();

String sTime = datef.format(beginTime) + " 00:00:00";