How to sort a javascript array by date - Stack Overflow

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For example in my array i have this data

var mydate = [
"2016,10,01",
"2016,09,13", 
"2016,09,05",
"2016,09,09", 
"2016,10,02"];

How to sort this? I want this output:

2016,09,05
2016,09,09
2016,09,13
2016,10,01
2016,10,02

For example in my array i have this data

var mydate = [
"2016,10,01",
"2016,09,13", 
"2016,09,05",
"2016,09,09", 
"2016,10,02"];

How to sort this? I want this output:

2016,09,05
2016,09,09
2016,09,13
2016,10,01
2016,10,02

• javascript

Share Improve this question Follow edited Oct 5, 2016 at 8:05 AyDee asked Oct 5, 2016 at 8:01 AyDeeAyDee 22111 gold badge55 silver badges1414 bronze badges 6

• 1 There are a number of ways you could do this, super basic example: remove the mas, turn it into an int and use a generic int sort. – DBS Commented Oct 5, 2016 at 8:04
• 2 mydate.sort() is the least you could do – Hassan Commented Oct 5, 2016 at 8:04
• @DBS or don't remove anything and sort the string – mplungjan Commented Oct 5, 2016 at 8:07
• @mplungjan Fair enough, I didn't think about the string equivalents of numbers working correctly in "alphabetical" order, but that makes sense. – DBS Commented Oct 5, 2016 at 8:11
• stackoverflow./questions/30691066/sort-a-string-date-array – Paul Commented Oct 5, 2016 at 8:11

 |  Show 1 more ment

4 Answers 4

Sorted by: Reset to default 8

A simple mydate.sort() could do that.

You will have to parse date into date object and then sort using date.getTime()

var mydate = [
  "2016,10,01",
  "2016,09,13",
  "2016,09,05",
  "2016,09,09",
  "2016,10,02"
];

mydate.sort(function(a,b){
  var da = new Date(a).getTime();
  var db = new Date(b).getTime();
  
  return da < db ? -1 : da > db ? 1 : 0
});
console.log(mydate)

Use Array#sort method with Date constructor.

var mydate = [
  "2016,10,01",
  "2016,09,13",
  "2016,09,05",
  "2016,09,09",
  "2016,10,02"
];

mydate.sort(function(a, b) {
  return new Date(...a.split(',')) - new Date(...b.split(','));
});

console.log(mydate);

---

Spread syntax not supported by older browser in that case do it like.

var mydate = [
  "2016,10,01",
  "2016,09,13",
  "2016,09,05",
  "2016,09,09",
  "2016,10,02"
];

mydate.sort(function(a, b) {
  var a1 = a.split(','),
    b1 = b.split(',');
  return new Date(a1[0], a1[1], a1[2]) - new Date(b1[0], b1[1], b1[2]);
});

console.log(mydate);

var mydate = [
  "2016,10,01",
  "2016,09,13",
  "2016,09,05",
  "2016,09,09",
  "2016,10,02"
];

mydate.sort(function(a,b){
  var da = new Date(a).getTime();
  var db = new Date(b).getTime();
  
  return da - db
});
console.log(mydate)

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