function DateAdd(interval, number, date) {
/*
* 功能:实现JSScript的DateAdd功能.
* 参数:interval,字符串表达式,表示要添加的时间间隔.
* 参数:number,数值表达式,表示要添加的时间间隔的个数.
* 参数:date,时间对象.
* 返回:新的时间对象.
* var now = new Date();
* var newDate = DateAdd( "d ",5,now);
*--------------- DateAdd(interval,number,date) -----------------
*/
switch (interval) {
case "y ":
{
date.setFullYear(date.getFullYear() + number);
return date;
break;
}
case "q ":
{
date.setMonth(date.getMonth() + number * 3);
return date;
break;
}
case "m ":
{
date.setMonth(date.getMonth() + number);
return date;
break;
}
case "w ":
{
date.setDate(date.getDate() + number * 7);
return date;
break;
}
case "d ":
{
date.setDate(date.getDate() + number);
return date;
break;
}
case "h ":
{
date.setHours(date.getHours() + number);
return date;
break;
}
case "m ":
{
date.setMinutes(date.getMinutes() + number);
return date;
break;
}
case "s ":
{
date.setSeconds(date.getSeconds() + number);
return date;
break;
}
default:
{
date.setDate(d.getDate() + number);
return date;
break;
}
}
}
//调用
var newDate = DateAdd("y ", 1, dtADate);
转:http://blog.163.com/[email protected]/blog/static/13393333720141066026886/