problem description

data problems of using ajax to request data in vue

the environmental background of the problems and what methods you have tried

related codes

/ / Please paste the code text below (do not replace the code with a picture)
/ / send a request to a third party after success

                        for(var i in listIn){
                            var arr = listIn[i].key;
                            console.log(arr)
                            $.ajax({
                                type:"post",
                                url: listIn[i].url,
                                async: false,
                                data:{ arr : res.data.content.token},
                                dataType:"jsonp",
                                success:function(result){
                                    console.log(result);
                                    keep();
                                },
                                error: function(err){
                                    console.log(err)
                                    keep();
                                }
                            });
                        }
                        
                        

       var listIn = [
            {
                url: shimingPersonIn,
                key: "cookieValue"
            },
            {
                url: shimingUnitIn,
                key: "cookieValue"
            },
            {
                url: coprApplyLogin,
                key: "copyRighCookie"
            }
        ]

what result do you expect? What is the error message actually seen?

the arr in this data cannot get the value assigned above, so try to solve