jquery ajax 设置请求头header 参数

$.ajax(
                {
                    url:\'http://127.0.0.1:30080/api-a/quasiCustom/selectCustomList\',
                    type:\'post\',
                    dateType:\'json\',
                    beforeSend: function(xhr) {
                        xhr.setRequestHeader("organId:\'1333333333\'");
                    },
                    headers:{\'Content-Type\':\'application/json;charset=utf8\',\'organId\':\'1333333333\'},
                    data:JSON.stringify(org),
                    success:function(data){console.log("sucess");},
                    error:function(data){console.log("error");}
                }
            );