Question

我想结合并计算日期。所有日期都在UTC时区，我首先使用toLocaleDateString（）将所有UTC时间转换为本地时间，然后将该日期作为JSON对象的键，但不能按预期获得结果。

我的JSON格式：

[{"UploadTimeStamp":"2017-02-18T09:01:43.060Z"},
{"UploadTimeStamp":"2017-02-19T04:09:43.347Z"},
{"UploadTimeStamp":"2017-02-21T14:38:40.157Z"},
{"UploadTimeStamp":"2017-02-22T11:30:58.546Z"},
{"UploadTimeStamp":"2017-02-22T11:31:35.514Z"},
{"DoneTimeStamp":"2017-02-19T03:54:34.791Z"},
{"DoneTimeStamp":"2017-02-19T17:48:40.041Z"},
{"DoneTimeStamp":"2017-02-21T14:55:33.335Z"},
{"DoneTimeStamp":"2017-02-17T15:01:32.426Z"}]

结果：

{"18/02/2017":{"Upload":1},
"19/02/2017":{"Upload":1},
"21/02/2017":{"Upload":1},
"22/02/2017":{"Upload":"[object Object]1","Done":"[object Object]1"},
"17/02/2017":{"Done":1}}

我的代码：

for (var i = 0; i < result.length; i++) {

                if (result[i].UploadTimeStamp) {

                    var value = new Date(result[i].UploadTimeStamp).toLocaleDateString();
                    //increment counter for this value (starting at 1)
                    var count = (temp[value] || 0) + 1;

                    if (temp[value] === undefined) {

                        temp[value] = {}
                        temp[value].Upload = count;

                    }
                    else {

                        temp[value].Upload = count;

                    }
                }
                else {

                    var value = new Date(result[i].DoneTimeStamp).toLocaleDateString();
                    //increment counter for this value (starting at 1)
                    var count = (temp[value] || 0) + 1;

                    if (temp[value] === undefined) {

                        temp[value] = {}
                        temp[value].Done = count;

                    }
                    else {

                        temp[value].Done = count;

                    }      
                }

            }

            console.log(JSON.stringify(temp))

我的预期结果

{"18/02/2017":{"Upload":1,"Done":0},
"19/02/2017":{"Upload":1,"Done":2},
"21/02/2017":{"Upload":1,"Done":1},
"22/02/2017":{"Upload":1,"Done":1},
"17/02/2017":{"Done":1,"Upload":0}}

提前谢谢

Answer 1

var data = [{"UploadTimeStamp":"2017-02-18T09:01:43.060Z"},
{"UploadTimeStamp":"2017-02-19T04:09:43.347Z"},
{"UploadTimeStamp":"2017-02-21T14:38:40.157Z"},
{"UploadTimeStamp":"2017-02-22T11:30:58.546Z"},
{"UploadTimeStamp":"2017-02-22T11:31:35.514Z"},
{"DoneTimeStamp":"2017-02-19T03:54:34.791Z"},
{"DoneTimeStamp":"2017-02-19T17:48:40.041Z"},
{"DoneTimeStamp":"2017-02-21T14:55:33.335Z"},
{"DoneTimeStamp":"2017-02-17T15:01:32.426Z"}];
var tmp = {};

data.forEach(function(d){
    let key = Object.keys(d)[0];    
    let value = new Date(d[key]).toLocaleDateString();
    key === "UploadTimeStamp" ? key = "upload": key = "done";
    tmp[value] = tmp[value] || {};
    tmp[value].upload = tmp[value].upload || 0;
    tmp[value].done = tmp[value].done || 0;
    tmp[value][key] += 1;
});

console.log(tmp);

Answer 2

您没有检查.Done或.Upload是否未定义，而是该日期的整个对象。检查设置var count的行。

realmObject

在json中组合并计算相同日期或复制

2 个答案: