/**
*
*@param oldDate 对日期对象字符串,格式:2015-06-03 或者 2015-05-04 11:23:33
*/
function compareDate(oldDate,newDate){
if( oldDate == "" ) return -1;
if( newDate == "" ) return -1;
var date1=new Date(oldDate.replace(/-/g, "/"));
var date2=new Date(newDate.replace(/-/g, "/"));
if( date2 < date1){
return 0;
}else{
return 1;
}
}