how to filter array of objects based upon timestamp

Question

I have more than 1 thousand array of objects and every object inside the array contains date and time fileds. This records are inserted to DB for every seconds as shown be

Answer 1

You could so something like this.

var input = [{
  "date": "11/22/2016 08:45:58",
  "energy": 29940913188,
  "power": 6783,
  "time": 217781102
}, {
  "date": "11/25/2016 08:46:01",
  "energy": 29940913267,
  "power": 6792,
  "time": 217781105
}, {
  "date": "11/25/2016 08:46:02",
  "energy": 29940913318,
  "power": 6791,
  "time": 217781107
}, {
  "date": "11/25/2016 08:46:04",
  "energy": 29940913344,
  "power": 6797,
  "time": 217781108
}, {
  "date": "11/25/2016 08:46:05",
  "energy": 29940913396,
  "power": 6816,
  "time": 217781110
}, {
  "date": "11/25/2016 08:46:07",
  "energy": 29940913421,
  "power": 6798,
  "time": 217781111
}, {
  "date": "11/25/2016 08:46:08",
  "energy": 29940913473,
  "power": 6804,
  "time": 217781113
}];

function filter(format) {
  return input.filter((obj) => {
    return obj.date.indexOf(format) !== -1;
  });
}

var last7Days = getLast7Days();
var results = last7Days.map((date) => {
  return filter(date);
}).filter((result) => {
  return result.length != 0
});

console.log(...results);


function pad(number) {
  if (number < 10) {
    return '0' + number;
  }
  return number;
}

function getLast7Days() {
  var output = [];
  for (var idx = 0; idx < 7; idx++) {

    var date = new Date();
    var last = new Date(date.getTime() - ((idx + 1) * 24 * 60 * 60 * 1000));
    var day = pad(last.getDate());
    var month = pad(last.getMonth() + 1);
    var year = last.getFullYear();

    output.push(month + "/" + day + "/" + year);
  }
  console.log(output);
  return output;
}