Question

下面的函数应返回具有以下结构的对象数组：

TopicFrequency = {
                name: "Chemistry", //This is dependent on topic
                data: [1,2,3,4,5,6,7,8,9,10,11,12] //This would be real data
            };

所以当我这样做时：

myData = this.getChartData("line");

它应该返回两个对象：

{name : "Chemistry", data : [1,2,3,4,51,12,0,0, 2,1,41, 31]}
{name : "Math", data : [0,0,41,4,51,12,0,0, 2,1,41, 90]}

所以当我做console.log(myData);它是完美的时候，就这样回复。

然而，当我执行console.log(myData[0].data)时，它返回所有0，而不是值。我不确定这个问题是什么，我的问题很简单，这个问题是什么？

这是完整的功能。 Somethings是硬编码的，其他变量（着名的服务器和queryContent）被删除。这些部分工作正常，只有当操纵/检索返回的数组的值时才会遇到问题。注意这是异步的。所以不确定这是否也是问题的一部分。

getChartData: function (chartType) {     
    var TopicsFrequencyArray = new Array(); 
        timePairs = this.newIntervalSet("Month"); 
        topicList = new Array("Chemistry", "Math");//Hard coded for now
        var queryCopy = {
            //sensitive information
        };
        for (i = 0; i < topicList.length; i++) {
            var TopicFrequency = {
                name: null,
                data: this.newFilledArray(12, 0)
            };
            j = 0;
            TopicFrequency.name = topicList[i];

            while (j < timePairs.length) {
                queryCopy.filter = TopicFrequency.name;
                //additional queryCopy parameter changes made here
                var request = esri.request({ url: server, content: queryCopy, handleAs: "json", load: sucess, error: fail });
                j = j + 1;
                function sucess(response, io) {
                    var topicCountData = 0;
                    query = esri.urlToObject(io.url);
                    var dateString = query.query.fromDate.replace("%", " ");
                    dateString = dateString.replace(/-/g, "/");
                    dateString = dateString.split(".");
                    date = new Date(dateString[0]);
                    dojo.forEach(response.features, function (feature) {
                        if (feature.properties.count > 0) {
                            topicCountData = feature.properties.count;
                        }
                        TopicFrequency.data[date.getMonth()] = topicCountData;
                    });
                }
                function fail(error) {
                    j = j + 1;
                    alert("There was an unspecified error with this request");
                    console.log(error);
                }
            }
            TopicsFrequencyArray.push(TopicFrequency);

          }
},

访问对象的数组值的问题 - 返回null或0

0 个答案: