How to sort array by date In JavaScript?

user_8012192 0
Viewed 42332

I have a problem to sort arrays that are in an array object by date.

I have an array object as below.

[
  {
    "name": "February",
    "plantingDate": "2018-02-04T17:00:00.000Z",
  },
  {
    "name": "March",
    "plantingDate": "2018-03-04T17:00:00.000Z",
  },
  {
    "name": "January",
    "plantingDate": "2018-01-17T17:00:00.000Z",
  }
]

How to sort the array in the array object from January to December, as below.

[
  {
    "name": "January",
    "plantingDate": "2018-01-17T17:00:00.000Z",
  },
  {
    "name": "February",
    "plantingDate": "2018-02-04T17:00:00.000Z",
  },
  {
    "name": "March",
    "plantingDate": "2018-03-04T17:00:00.000Z",
  }
]

I beg for help.

Thank you in advance.

javascript
1 Answers

Parse strings to get Date objects, then sort by compare function.

var a = [
  {
    "name": "February",
    "plantingDate": "2018-02-04T17:00:00.000Z",
  },
  {
    "name": "March",
    "plantingDate": "2018-03-04T17:00:00.000Z",
  },
  {
    "name": "January",
    "plantingDate": "2018-01-17T17:00:00.000Z",
  }
]

a.sort(function(a,b){
  return new Date(a.plantingDate) - new Date(b.plantingDate)
})

console.log(a)

As Barmar commented,

a.sort(function(a,b){
  return a.plantingDate.localeCompare(b.plantingDate);
})

will also work.

user_44813120
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