jquery ajax传值为空
帮看看怎么我传的参数是空的

$("#bt").blur(function(){

var newnum=$("#bt").val();

var bookid=$("#bookid").val();

 $.ajax({

       type:"post",

       url:"go.action",

       data:"newnum="+(newnum)+""&"bookid="+(bookid)+"",

       success:function(data){

   

      }

      });

       

});

------解决方案--------------------
 $.ajax({
       type:"post",
       url:"go.action",
       data:"newnum="+newnum+"&bookid="+bookid,
       success:function(data){
    
      }
      });