Question

I’m trying to fill my array with an auto-increment (listeFormatte.lenght) and it break at the line listeFormatte[listeFormatte.length][0] = cartArray[i][0]; and give can’t convert undefined object error.

cartArray[i][0] = "ensemble"

listeFormatte = "" (new array)

listeFormatte.length = 0

Thanks in advance.

var listeFormatte = new Array;

for(var i=0;i<cartArray.length;i++)
{
    if(cartArray[i][0] == "ensemble")
    {
        listeFormatte[listeFormatte.length] = [];
        listeFormatte[listeFormatte.length][0] = cartArray[i][0];
    }
}

Edit: What is imagemagick-convert it has nothing to do with what I’m doing, why would you edit my things with stuff like that?

Answer: So when listeFormatte[listeFormatte.length] = []; create the multidimensional array it raise the listeFormatte.lenght which lead to a undefined on the “second use” because it is now: listeFormatte[1] instead of [0]. So I added a variable which get the listeFormatte.length.

Answer 1

Did you consider
listeFormatte[listeFormatte.length] = new Array;

I never seen the listeFormatte[listeFormatte.length] = []; construct before, and without something like that your listeFormatte[listeFormatte.length] is NOT defined as array, so you can not use [0] index.