JavaScript: Sort an nested array

Question

I have an nested array unsorted after sorting it should be sorted depending on 2nd item of sub-array

var unsorted = [["tag_17",0,4],["tag_18",13,18],["tag_435",6,11]];
var sorted = [["tag_18",13,18], ["tag_435",6,11], ["tag_17",0,4]];

btw, you have a nested array. – Nina Scholz Jul 27 '17 at 06:23 — Nina Scholz, Jul 27 '17 at 06:23
Sorry, Wrong choice of words :( – Abdullah Ahmed Jul 27 '17 at 06:30 — Abdullah Ahmed, Jul 27 '17 at 06:30

score 3 · Accepted Answer · answered Jul 27 '17 at 06:21

3

var a = [
  ["tag_17", 0, 4],
  ["tag_18", 13, 18],
  ["tag_435", 6, 11]
];

a.sort(sortFunction);
console.log(a);

function sortFunction(a, b) {
  if (a[0] === b[0]) {
    return 0;
  }
  return (a[1] < b[1]) ? 1 : -1;
}

You can read the documentation about sort.

answered Jul 27 '17 at 06:21

Milan Chheda

8,159
3
20
35

Thanks buddy. It worked... – Abdullah Ahmed Jul 27 '17 at 06:28
1

You're welcome. Up-vote and mark it as close. Happy Coding!!! :) – Milan Chheda Jul 27 '17 at 06:28
1

Found a working answer here too https://stackoverflow.com/a/12788202/2597670 – Abdullah Ahmed Jul 27 '17 at 06:29
1

Yes, just Google or StackOverflow and could have found multiple answers as `sort` is straight-forward and easy to use. – Milan Chheda Jul 27 '17 at 06:30

score 3 · Answer 2 · answered Jul 27 '17 at 06:28

3

var unsorted = [["tag_17",0,4],["tag_18",13,18],["tag_435",6,11]];

sorted = unsorted.sort((a,b) => {
    return b[1] - a[1];
} )

console.log(sorted);

answered Jul 27 '17 at 06:28

Fahad Nisar

1,723
12
18

JavaScript: Sort an nested array

2 Answers2

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