how to sort array by date and count in ionic 2

Question

I want to sort my array by date and count, i'm able to sort array only by date my data is as below

   count    date
    "0"     "2018-03-06T07:09:02+00:00"
    "0"     "2018-03-06T07:07:02+00:00"
    "0"     "2018-03-06T07:06:03+00:00"
    "0"     "2018-03-06T07:02:06+00:00"
    "0"     "2018-03-06T06:39:55+00:00"
    "0"     "2018-03-06T06:30:14+00:00"
    "1"     "2018-03-06T06:22:20+00:00"
    "1"     "2018-03-06T06:07:04+00:00"
    "0"     "2018-03-06T06:03:17+00:00"
    "14"    "2018-03-01T10:28:27.998000+00:00"
    "0"     null
    "0"     null
    "0"     null

my code is below..

this.nodelist.sort((a, b) => {//lastDate dsc

      if (new Date(b.lastDate) > new Date(a.lastDate)) {
        return 1;
      }
      if (new Date(b.lastDate) < new Date(a.lastDate)) {
        return -1;
      }

      return 0;
    });

i want to sort array by count and date both means if array is having count > 0 then it should be first then count with zero and on last all other records. can anyone help me to solve this?

stackoverflow.com/questions/46520444/…

Utpaul
– Utpaul

2018-03-06 10:58:14 +00:00
Commented Mar 6, 2018 at 10:58 — Utpaul
– Utpaul, Commented Mar 6, 2018 at 10:58

Stephan Strate · Accepted Answer · 2018-03-06 12:09:40Z

4

You can use your code and modify it like this:

this.nodelist.sort((a, b) => {
    // 1st property, sort by count
    if (a.count > b.count)
        return -1;

    if (a.count < b.count)
        return 1;

    // 2nd property, sort by date
    if (new Date(b.lastDate) > new Date(a.lastDate))
        return 1;

    if (new Date(b.lastDate) < new Date(a.lastDate))
        return -1;

    return 0;
});

How does it work? The first two if statements will sort the array by count. If count is equal, the code will consider the second property (lastDate).

edited Mar 6, 2018 at 12:09

answered Mar 6, 2018 at 11:40

Stephan Strate

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Comments

AddWeb Solution Pvt Ltd · Accepted Answer · 2018-03-06 11:47:16Z

1

Try this:

let xyz = numbers.sort(function(a, b) {
  var countA = a.count;
  var countB = b.count;
  var dateA = new Date(a.date);
  var dateB = new Date(b.date);

  if(countA == countB)
  {
      return (dateB < dateA) ? -1 : (dateB > dateA) ? 1 : 0;
  }
  else
  {
      return (countB < countA) ? -1 : 1;
  }

});

console.log(xyz);

answered Mar 6, 2018 at 11:47

AddWeb Solution Pvt Ltd

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