addday天后的日期

function time(addday){								var now= new Date();					nowdate=now.getDate();	//alert(nowdate);	now.setDate(nowdate+addday);//获取addday天后的日期 	year=now.getFullYear();	month=now.getMonth();	date=now.getDate();	return now;}

 

n天前的日期

 

 

 

 

go按键的判断

$("#go").click(function(){	//alert(getBeforeDate(341));	var projectname="<%=session.getAttribute("projectname_session")%>";						var modelname= document.getElementById("codeid").value;	var d=document.getElementById("enddate").value;	var year= d.substring(0,4);	var mon=d.substring(5,d.lastIndexOf("-"));	var day=d.substring(d.lastIndexOf("-")+1,d.length);	var selectDate = year+"-"+((mon.length==1)?('0'+mon):mon)+"-"+(day.length==1?('0'+day):day);	 alert(selectDate);	//alert(selectDate);	if(selectDate<=getBeforeDate(341)||(selectDate>=getBeforeDate(-1))){		var info="No Data!\r\nPlease Select a Valid Date: \""+getBeforeDate(341)+" ~ "+getBeforeDate(0)+"\"";		alert(info);	}	else{。。。。。。。。。。。。。。。。。。