var beginTime = "2009-09-21 00:00:00"; var endTime = "2009-09-21 00:00:01"; var beginTimes = beginTime.substring(0,10).split('-'); var endTimes = endTime.substring(0,10).split('-'); beginTime = beginTimes[1]+'-'+beginTimes[2]+'-'+beginTimes[0]+' '+beginTime.substring(10,19); endTime = endTimes[1]+'-'+endTimes[2]+'-'+endTimes[0]+' '+endTime.substring(10,19); alert(beginTime+"aaa"+endTime); alert(Date.parse(endTime)); alert(Date.parse(beginTime)); var a =(Date.parse(endTime)-Date.parse(beginTime))/3600/1000; if(a<0){ alert("endTime小!"); }else if (a>0){ alert("endTime大!"); }else if (a==0){ alert("时间相等!"); }else{ return 'exception'} }