jqueryajax双击div可直接修改div中的内容_jquery

{$sort}

<?PHP
/**
  * ajax 设置排序值
  */
 public function setSort(){
  if(IS_POST){
   $tid = I('post.tid');
   $sort = I('post.sort');
   if(!is_numeric($sort)){
    $arr = array(
     'flag'=>3,
     'msg'=>'请输入数字',
     'link'=>'',
     'content'=>''
    );
    $this->ajaxReturn($arr);
   }
   $data = array(
    'id'=>$tid,
    'sort'=>$sort
   );
   $this->mod_sort = M('Sort');
   $res = $this->mod_sort->save($data);
   if($res){
    $arr = array(
     'flag'=>1,
     'msg'=>'排序值设置成功',
     'link'=>'',
     'content'=>''
    );
   }else{
    $arr = array(
     'flag'=>2,
     'msg'=>'排序值设置失败',
     'link'=>'',
     'content'=>''
    );
   }
  }else{
   $arr = array(
    'flag'=>0,
    'msg'=>'请求非法！',
    'link'=>'',
    'content'=>''
   );
  }
  $this->ajaxReturn($arr);
 }
?>