Question

我正在尝试根据时间戳减少此数组：

Var Data = [{"Group":"OPS","Date":"2017-04-18T00:00:00.000Z","Count":1},{"Group":"BOE","Date":"2017-04-19T00:00:00.000Z","Count":1},{"Group":"EDW","Date":"2017-04-21T00:00:00.000Z","Count":1},{"Group":"SUPPORT","Date":"2017-04-17T00:00:00.000Z","Count":1},{"Group":"EDWEXTRACTS","Date":"2017-04-17T00:00:00.000Z","Count":1},{"Group":"EDWEXTRACTS","Date":"2017-04-18T00:00:00.000Z","Count":1},{"Group":"SAFTT","Date":"2017-04-17T00:00:00.000Z","Count":1},{"Group":"SAFTT","Date":"2017-04-18T00:00:00.000Z","Count":2},{"Group":"SAFTT","Date":"2017-04-21T00:00:00.000Z","Count":1},{"Group":"OPS","Date":"2017-04-17T00:00:00.000Z","Count":1},{"Group":"VIEW","Date":"2017-04-17T00:00:00.000Z","Count":1},{"Group":"VIEW","Date":"2017-04-19T00:00:00.000Z","Count":3}]

我曾尝试使用reduce方法，但似乎做错了。

var obj = {}

result.reduce(function(r, e) {
  if (!obj[e.Date]) {
    obj[e.Date] = {
      Date: e.Date,
      Assest: []
    }
    r.push(obj[e.Date])
  }
  obj[e.Date].Date.push(e.Group)
  obj[e.Date].Date.push(e.Count)
  return r
}, [])

console.log(JSON.stringify(result, 0, 4))

我希望的结果是：

Var New_Data = [{"Date":"xx/xx/xx", "Assets":[{"group":"XXX"},{"Count":"X"}]},{"Date":"xx/xx/xx","Assets":[{"group":"XXX"},{"Count":"X"}]}]

任何想法如何实现这一点，任何帮助都会很棒。谢谢=）

Answer 1

以下代码是一个工作示例。如果它们与我实施的不同，您应该能够将其改为您的确切规格。

＆＃13;

var Data = [
    {"Group":"OPS","Date":"2017-04-18T00:00:00.000Z","Count":1},
    {"Group":"BOE","Date":"2017-04-19T00:00:00.000Z","Count":1},
    {"Group":"EDW","Date":"2017-04-21T00:00:00.000Z","Count":1},
    {"Group":"SUPPORT","Date":"2017-04-17T00:00:00.000Z","Count":1},
    {"Group":"EDWEXTRACTS","Date":"2017-04-17T00:00:00.000Z","Count":1},
    {"Group":"EDWEXTRACTS","Date":"2017-04-18T00:00:00.000Z","Count":1},
    {"Group":"SAFTT","Date":"2017-04-17T00:00:00.000Z","Count":1},
    {"Group":"SAFTT","Date":"2017-04-18T00:00:00.000Z","Count":2},
    {"Group":"SAFTT","Date":"2017-04-21T00:00:00.000Z","Count":1},
    {"Group":"OPS","Date":"2017-04-17T00:00:00.000Z","Count":1},
    {"Group":"VIEW","Date":"2017-04-17T00:00:00.000Z","Count":1},
    {"Group":"VIEW","Date":"2017-04-19T00:00:00.000Z","Count":3}
];

Data = Data.reduce(function(r, e) {
    var date = e.Date.match(/(\d+-\d+-\d+)/)[0].replace(/-/g, '/');

    if (r[date] == undefined) {
        r[date] = {Date: date, Assets: []};
    }
    
    r[date].Assets.push({Group: e.Group});
    r[date].Assets.push({Count: e.Count});
    
    return r
}, {});

console.log(Data);

＆＃13;

您可能需要将生成的对象转换为数组：

new_data = [];
for(i in Data){
    new_data.push(Data[i]);
}

Answer 2

你需要的是这样的东西吗？

var result = dados.map(function (v) {
    return {
        Date: new Date(v["Date"]),
        Assets: [
            {Group: v['Group']},
            {Count: v['Count']}
        ]
    };
});

或者你需要创建一个小组吗？

JavaScript在时间戳上减少数组

2 个答案: