/**
* 时间处理类，datepart：转入的参数是要处理的字段，number：要加减的参数，date：要处理日期，没有传入时就是表示当前的时间。
* 例如：dateAdd("date",23,date);
* */
public function dateAdd(datepart:String = "", number:Number = 0, date:Date = null):Date {
if (date == null) {
/* Default to current date. */
date = new Date();
}
var returnDate:Date = new Date(date.time);;
switch (datepart.toLowerCase()) {
case "fullyear":
case "month":
case "date":
case "hours":
case "minutes":
case "seconds":
case "milliseconds":
returnDate[datepart] += number;
break;
default:
/* Unknown date part, do nothing. */
break;
}
return returnDate;
}
