script取一个月的最后一天

//=================取一个月的最后一天
function getLastDay(year,nextMonth){
var theDay = new Date(year,nextMonth,0)
theDay = theDay-1
lastDay = theDay.getFullYear()+"-"+(theDay.getMonth()+1)+"-"+theDay.getDate()
Alert(lastDay);
return lastDay
}[@more@]
文章题目：script取一个月的最后一天
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