ajax批删

<td><input type="checkbox"     name="bb"  value="{{$v->id}}"> {{$v->id}}</td>

<button id="pi">批删</button>

//批量刪除

$(document).on("click","#pi",function () {
       nam=document.getElementsByName("bb");
       str="";
      for (i=0;i<nam.length;i++){
       if (nam[i].checked==true){
            str+=","+nam[i].value;

       }
      }
      id=str.substr(1);
     $.ajax({
         url:"shan",
         type:"post",
         dataType:"json",
         data:{
             id:id
         },
         success:function (data) { console.log(data);
             if (data==1){
                 location.href=""
             }
         }
     })

})

function  shan(req $req){
       $id= $req->post("id");
       $id=explode(",",$id);

     foreach ($id as $k=>$v){
         $res= DB::table("poker")->delete($v);
     }
     return  1;
}