Javascript 2D array returning NaN

Asked Jul 24 '13 at 16:23

Active Jul 24 '13 at 16:27

Viewed 401 times

I created a helper function to create 2D arrays but it always returns NaN values in Chrome.

var H = new Object();
H.N = 10;
H.M = 3;
function array2D(N,M,v){
    var temp = new Array(N);
        for(var i=0; i<N; i++){
            temp[i] = new Array(M);
            for(var j=0; j<M; j++){
                temp[i][j] = v;
            }
        }
     console.log(temp);
     return temp;
}
H.A = new array2D(H.N, H.M, 1/H.M);

When I print v, the correct value is given but the array still has the NaN values for each entry. I have looked at answers to these questions so far: 1, 2 but nothing I change has worked. This is my first time working with Javascript; can someone explain my error?

edited May 23 '17 at 11:49

Community

asked Jul 24 '13 at 16:23

user2611607

Works for me http://jsfiddle.net/vnAgp/1/ – gen_Eric Jul 24 '13 at 16:25
2

I copypasted and ran the code as is and works fine – Esailija Jul 24 '13 at 16:25
Ran on Chrome's developer tools and it creates the array and all... – DarkAjax Jul 24 '13 at 16:26
I think calling the function with a constructor is weird, since it returns a value explicitly, but it seemed to work for me (which makes me worry about myself). – Pointy Jul 24 '13 at 16:29
@Pointy if you return a non-primitive then that is returned instead of the created object – Esailija Jul 24 '13 at 16:29
@Esailija yes, I know, but it's one of those things that my head randomly inverts so I never know which is which :) – Pointy Jul 24 '13 at 16:30
Interesting, it works when I copy paste as well but not when I make the file in ssh and run online. – user2611607 Jul 24 '13 at 17:00

Javascript 2D array returning NaN

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