set data in Javascript multidimensional array

Question

I have created this multidimensional array in javascript.

var arr = [];
arr[0] = [];
arr[0][0] = [];
arr[0][0][0] = [];
arr[0][0][0][0] = [];

and assigning values to the using this code

arr[0] = 1;
arr[0][0] = 2;
arr[0][0][0] = 3;
arr[0][0][0][0] = 4;
arr[0][0][0][0][0] = 5;
alert("arr ==> " + arr);

But it gives output as only 1, but the desired output is 1,2,3,4,5

When I do this alert(arr[0][0]); the desired output is 2 but it gives undefined.

Thanks for helping.

JavaScript doesn't have multi-dimentional arrays in the manner you're thinking. It has nested arrays just like you can have nested objects (since arrays are just objects). — the system
– the system, Commented Feb 6, 2013 at 6:27
Even if your "multi-dimensional array" was filled the way you intended, it would never print 1,2,3,4,5. That being said, JavaScript is not PHP. Chances are you are using the wrong data structure. — Tomalak
– Tomalak, Commented Feb 6, 2013 at 6:28
@Tomalak Thanks for replying. Can you tell me how can I set the data in my desired manner. — Yogesh Suthar
– Yogesh Suthar, Commented Feb 6, 2013 at 6:30
As has been said, there are no true multi-dimensional arrays in JavaScript, only nested arrays. Can you tell me what you want to do? ("I'm trying to use a multi-dimensional array" is not an answer.) — Tomalak
– Tomalak, Commented Feb 6, 2013 at 6:34

user578895 · Accepted Answer · 2013-02-06 06:24:10Z

4

You're overwriting your values:

arr[0] = [];
...
arr[0] = 1; // this also blows away arr[0][0], arr[0][0][0], etc

so...

arr[0][0] = 1;
==
1[0] = 1;

What exactly are you trying to do?

answered Feb 6, 2013 at 6:24

user578895

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2 Comments

I want to set the values at zero position upto 5 dimension.

You can't have arr[0] be both zero and an array. What's the purpose of this?

BenhurCD · Accepted Answer · 2013-02-06 06:45:50Z

1

var arr = [];
arr[4] = [];

arr[0] = 1;
arr[1] = 2;
arr[2] = 3;
arr[3] = 4;
arr[4] = 5;

alert("arr ==> " + arr );

I hope this will solve your problem.

Alerts as

arr ==> 1,2,3,4,5

answered Feb 6, 2013 at 6:45

BenhurCD

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