javascript - 为什么此构造函数不起作用？ (在Ajax成功中)

我正在尝试提取我的json数据并将其放入一个变量中，该变量随处可见。但是我收到一条错误消息，它说：食物未定义（最后一行警报）

  var foods;
          function search() {
            $.ajax({
              url: "foodsrequest.php",
              type: "GET",
              dataType: "json",
              async: false,
              data: {"inputData": JSON.stringify(filterdata)},
              success: function(data){

                foods = foodConstructor(data[0]); ///yes, it is an array of objects and it has all the parameters needed
                function foodConstructor(dataIn){
                  this.id = dataIn.id;
                  this.name = dataIn.name;
                  this.price = dataIn.price;
                  this.species = dataIn.species;
                  this.type = dataIn.type;
                  this.manufacturer = dataIn.manufacturer;
                  this.weight = dataIn.weight;
                  this.age = dataIn.age;
                  this.partner = dataIn.partner;
                }
              }
            });
          }

          alert(foods.name);

最佳答案

只需尝试使用new关键字调用您的构造函数。会的。

foods = new foodConstructor(data[0]);