I have an array in this format:
meuArray = ["0", "1", "2", "3", "4", "5", "6", "7", "8", "9", ...];
I would like to turn it into a multidimensional array with javascript / jquery leaving it like this:
meuArray = [
[0] => ["0", "1", "2", "3", "4"];
[1] => ["5", "6", "7", "8", "9"];
...
]
The number of keys per array will vary, but for ease of response, we can always consider 5 keys per array.
I would do it as follows:
I would browse the items of array ;
I would use a variable to control the group where the item will be placed;
The result is as follows:
var arrayBase = ["0", "1", "2", "3", "4", "5", "6", "7", "8", "9", "10"];
var dados = [];
function separar(base, maximo) {
var resultado = [[]];
var grupo = 0;
for (var indice = 0; indice < base.length; indice++) {
if (resultado[grupo] === undefined) {
resultado[grupo] = [];
}
resultado[grupo].push(base[indice]);
if ((indice + 1) % maximo === 0) {
grupo = grupo + 1;
}
}
return resultado;
}
dados = separar(arrayBase, 5);
console.log(JSON.stringify(dados));You can use the Array # slice method that will split the array based on the start and end index, iterating the array by a cut value, taking into account that its array may have n total size.
var meuArray = ["0", "1", "2", "3", "4", "5", "6", "7", "8", "9"]
, novoArray = []
, corte = 5;
for (var i = 0; i < meuArray.length; i = i + corte) {
novoArray.push(meuArray.slice(i, i + corte));
}
console.log(novoArray);Even if the array has another size or cut other than 5, the new array will be cut. The last array will have the rest of the elements.
I recommend you take a look at the Array push method: link
But a very basic example would look like this:
meuArray = [];
meuArray.push([1, 2, 3, 4, 5]);
meuArray.push([6, 7, 8, 9, 10]);
Until the amount you need, I recommend using a loop.
Using a simple loopback, you can use Array.Slice to separate the array and the < Array.Push to create a new one with the extracted elements.
function separarArray(arr, tamanho) {
var novoArray = [];
var i = 0;
while (i < arr.length) {
novoArray.push(arr.slice(i, i + tamanho));
i += tamanho;
}
return novoArray;
}
console.log(separarArray(["0", "1", "2", "3", "4", "5", "6", "7", "8", "9", "10"], 5));