JS date对象的减法处理

 var time1="2010-11-01 10:12:12";
   var time2="2010-11-01 11:12:12";

   var t1=new Date(time1.replace(/-/g, '/'));
   var t2=new Date(time2.replace(/-/g, '/'));
   
   alert((t2-t1).toString()=="3600000"?"yes":"no");