JavaScript减少时间戳的数组

Question

I am trying to reduce this array based on the timestamp:

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}]

I have tried to use the reduce method but seem to be doing something wrong.

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))

My desired outcome would be:

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

Any Idea how I can achieve this, any help would be great. Thanks =)

Answer 1

The code below is a working example. With this in hand you should be able to alter it to your exact specifications, if they differ from what I have implemented.

 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); 

You may need to convert the resulting object into an array:

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

Answer 2

What you need is something like this?

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

or Do you need to create a group?