ajax post 数据给php ， php print 一个string ，前台接受 ，信息是接受到了 ，但是信息的前面多了一个 "var path = window.location.pathname;
jQuery.ajax({

        type:"POST",
            url:'/thumbsup-callback',
            data:{'path':path},
            success: thumbsup_load,
            error: function(){
            alert('An unknown error occurred');
        }
    })    

php --
function thumbsup_load(){

global $user;
if($user->uid){
    $uid = $user->uid;
}else{
    return false;
}
$path = trim($_POST['path']);
$info = get_node_info($path);
$nid = $info[1];
$query1 = db_select('thumbsup','t')
    ->fields('t',array('id'))
    ->condition('t.nid', $nid)
    ->execute();
$num = $query1->rowCount();

$query = db_select('thumbsup','t')
    ->fields('t',array('id'))
    ->condition('t.nid', $nid)
    ->condition('t.uid',$uid)
    ->execute();    
if($query->rowCount()>0){
    print 'ThumbsupAleary|'.$num;
}else{
    print 'NotThumbsup'.$num;
}        

}
但是console.log出来的是