function timeCompare(){
this.startTime=new Date(2013,1,3,0,0,0);
this.endTime=new Date(2013,1,3,23,59,59);
}
timeCompare.prototype.init=function(){
var start=this.startTime.getTime(),
end=this.endTime.getTime(),
now=new Date().getTime();
if(now<start){
alert("活动未开始");
}else if(now>end){
alert("活动已结束");
}else{
alert("活动进行中")
}
}
var bb=new timeCompare();
bb.startTime=new Date(2013,1,1,0,0,0);
bb.endTime=new Date(2013,1,2,23,59,59);
bb.init();