Array sort in javascript

Question

I have a array in javascript which looks like

var data_tab = [[1,id_1001],[4,id_1004],[3,id_1003],[2,id_1002],[5,id_1005]]

And I want to sort them based on first value like..

1,id_1001

2,id_1002

3,id_1003

4,id_1004

5,id_1005

Is there any way?I can sort them in javascript..

Did you search "javascript sort array" ? Did you test something ? — Denys Séguret, Jan 10 '14 at 11:58
possible duplicate of [Sorting an array of JavaScript objects](http://stackoverflow.com/questions/979256/sorting-an-array-of-javascript-objects) — Martin, Jan 10 '14 at 11:59
Hey people, stop answering, we already have 8 answers to this easy question that Google instantly answers anyway... — Denys Séguret, Jan 10 '14 at 12:03

score 2 · Answer 1 · answered Jan 10 '14 at 11:59

2

Array.prototype.sort():

The sort() method sorts the elements of an array in place and returns the array. The sort is not necessarily stable. The default sort order is lexicographic (not numeric).

answered Jan 10 '14 at 11:59

CD..

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Dhanu Gurung · Answer 2 · 2014-01-10T12:04:56.867

1

Try:

data_tab.sort(function(a, b){ return a[0] - b[0] })

DEMO:

var data_tab = [[1,'id_1001'],[4,'id_1004'],[3,'id_1003'],[2,'id_1002'],[5,'id_1005']]
data_tab = data_tab.sort(function(a, b){ return a[0] - b[0] })
console.log(data_tab);

# Give [[1,'id_1001'],[2,'id_1002'],[3,'id_1003'],[4,'id_1004'],[5,'id_1005']]

edited Jan 10 '14 at 12:04

answered Jan 10 '14 at 11:59

Dhanu Gurung

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Forgot to add 'return'. – Dhanu Gurung Jan 10 '14 at 12:05

score 1 · Answer 3 · answered Jan 10 '14 at 11:59

1

console.log(data_tab.sort(function(first, second) {
    return first[0] - second[0];
}));

Output

[ [ 1, 'id_1001' ],
  [ 2, 'id_1002' ],
  [ 3, 'id_1003' ],
  [ 4, 'id_1004' ],
  [ 5, 'id_1005' ] ]

answered Jan 10 '14 at 11:59

thefourtheye

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score 1 · Answer 4 · answered Jan 10 '14 at 12:00

1

var data_tab = [[1,"id_1001"],[4,"id_1004"],[3,"id_1003"],[2,"id_1002"],[5,"id_1005"]]

function compare(first,second) {
  if (first[0] < second[0])
     return -1;
  if (first[0] > second[0])
    return 1;
  return 0;
}

data_tab.sort(compare);

answered Jan 10 '14 at 12:00

Vova Bilyachat

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score 0 · Accepted Answer · answered Jan 10 '14 at 12:02

0

 data_tab.sort(function(a,b){return a[0]-b[0];});

answered Jan 10 '14 at 12:02

kubari

36
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Array sort in javascript

5 Answers5