日期相加函数

// addDate("5",5,"2004/12/1 00:00:00")

function addDate(type,NumDay,dtDate){

var date = new Date(dtDate)

type = parseInt(type) //类型

lIntval = parseInt(NumDay)//间隔

switch(type){

case 6 ://年

date.setYear(date.getYear() + lIntval)

break;

case 7 ://季度

date.setMonth(date.getMonth() + (lIntval * 3) )

break;

case 5 ://月

date.setMonth(date.getMonth() + lIntval)

break;

case 4 ://天

date.setDate(date.getDate() + lIntval)

break

case 3 ://时

date.setHours(date.getHours() + lIntval)

break

case 2 ://分

date.setMinutes(date.getMinutes() + lIntval)

break

case 1 ://秒

date.setSeconds(date.getSeconds() + lIntval)

break;

default:

}

return date.getYear() +'-' + (date.getMonth()+1) + '-' +date.getDate()+ ' '+ date.getHours()+':'+date.getMinutes()+':'+date.getSeconds()

}

调用：

btime=document.getElementById("_9431").value

var bdate = Date.parse(btime.replace(/-/g,"/"));

document.getElementById("_9432").value=addDate("4",6,bdate)