<script>

      tags({$thread.fid});
     //标签查询
     function tags(fid){
         console.log(fid)
         $.ajax({
          url:"{:url('方法接口')}",
          data:{'fid':fid},
          type:"Post",
          dataType:"json",
          success:function(data){
            console.log(data);
              var getTpl = taglist.innerHTML
                ,view = document.getElementById('taglists');
                laytpl(getTpl).render(data, function(html){
                  view.innerHTML = html;
                });
                form.render('checkbox'); //刷新select选择框渲染
          },
          error:function(data){
              $.messager.alert('错误',data.msg);
          }
      });
      
     }

</script>


  <!--复选框渲染-->
  <script id="taglist" type="text/html">
    {{#  layui.each(d.tag, function(index, item){ }}
        
        {{#  if({$tagidsp}  == 0 ){ }}
                <input type="checkbox"  name="tag[]" title="{{item.name}}" value="{{item.tagid}}">
            {{#  } else { }}
            
                 {{#  layui.each(toString({$thread.tagids}).split(','), function(indexs, items){ }}
                        
                    {{#  if(items == item.tagid){ }}
                        <input type="checkbox"   name="tag[]" title="{{item.name}}" value="{{item.tagid}}">
                    {{#  } else { }}
                        <input type="checkbox" checked name="tag[]" title="{{item.name}}" value="{{item.tagid}}">
                    {{#  } }} 
    
                {{#  }); }}
            
        {{#  } }} 
        
    
  {{#  }); }}
  
  {{#  if(d.tag.length === 0){ }}
       <input type="checkbox" name="" title="请选择分类" value=""> 
  {{#  } }} 
  </ul>
  
</script>

三、后台的代码

 public function index($tid){
           $forum =  '';//相关数组
            $post =  ''; //相关数组
            $tagidsp = ''; //相关数组 
        if(!$tagidsp){
            $tagidsp = '0';
        } else{
            $tagidsp = '1';
        } 
        View::assign([
            'name'  => 'CMS管理系统',
            'email' => '673011635@qq.com',
            'thread' => $thread,
            'forum' =>$forum,
            'post' =>$post,
            'tagidsp' =>$tagidsp,
        ]);
        return View::fetch('index');

    }