indexOf array in array?

Question

I am most likely overlooking something something pretty basic here, but I have a really hard time figuring out why I get the following behaviour, when looking for a specific array in another array:

myArray.push(["Name", 1, 2]);
myArray.indexOf(["Name", 1, 2]);

Returns -1.. Why can't I find the array that I just pushed?

Because each time you use `[`…`]` you create a _new_ array. `indexOf` compares references. — Sebastian Simon, Sep 21 '16 at 06:39
That makes sense. Can you give me heads up on how to achieve the behaviour im looking for? — user2806026, Sep 21 '16 at 06:41
Possible duplicate of [javascript search array of arrays](http://stackoverflow.com/questions/6315180/javascript-search-array-of-arrays) — Sebastian Simon, Sep 21 '16 at 06:45
This seems to be a duplicated question. Here is the link to a quit similar problem: http://stackoverflow.com/questions/24943200/javascript-2d-array-indexof — Bent Auweiler, Sep 21 '16 at 06:47

score 1 · Answer 1 · answered Sep 21 '16 at 06:43

1

Try this:

var myArray = [];
var anotherArray = ["Name", 1, 2];

myArray.push(anotherArray);
myArray.indexOf(anotherArray);  // returns 0

answered Sep 21 '16 at 06:43

Zychoo

595
2
6
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score 1 · Answer 2 · answered Sep 21 '16 at 06:43

1

Try something like this:

var checkArray = ["Name", 1, 2]
var myArray = [];

myArray.push(checkArray);
myArray.indexOf(checkArray);

answered Sep 21 '16 at 06:43

Kingsthor

172
6

indexOf array in array?

2 Answers2