Multidimensional array returning 'undefined' value in Javascript

Question

I have a multidimensional array in javascript as the code below:

var solidos = [];
solidos[0] = [];
solidos[0].push({
 nome: 'Octaedro regular',
 dimensoes: 'Aresta = 100mm',
 material: 'Placa de alumínio',
 tempo: '2 horas',
 maquinario: 'Dobradeira e Morsa',
 imagem: 'octaedro.gif'
});

When I give a alert in some element of the array, it returns me 'undefined'. Why?

---

alert(solidos[0].nome);

Results: undefined

Answer 1

Since it is a nested array.

You have to try like,

alert(solidos[0][0].nome);

Answer 2

Change:

alert(solidos[0].nome);

To:

alert(solidos[0][0].nome);

Answer 3

Because it's a 2-dimensional array, as you indicate. The value at index 0 is an array, not an object. You need to access the key of the second array:

alert(solidos[0][0].nome);

Please see this jsFiddle Demo.

Answer 4

See my working jsFiddle demo: jsFiddle

var solidos = [];
 solidos[0] = [];
 solidos[0].push({
 nome: 'Octaedro regular',
 dimensoes: 'Aresta = 100mm',
 material: 'Placa de alumínio',
 tempo: '2 horas',
 maquinario: 'Dobradeira e Morsa',
 imagem: 'octaedro.gif'
});
console.log(solidos[0][0]);
alert(solidos[0][0].nome);

In the firebug console, you can see that logging solidos[0] returns an array and logging solidos[0][0] returns the first element in that array.