Take more than one element from an Array

Question

I wonder how I get 2 elements of an array at once.

numeros = [1, 2, 3]
let primeiros = numeros[1]

but I need to take the first 2 values, and I haven’t found how to do.
I need something like:

let primeiros = numeros[1:2]

Answer 1

Use Array.prototype.slice():

let numeros = [1, 2, 3];
let primeiros = numeros.slice(0, 2);
console.log(primeiros);

The parameters represent, respectively, the first index you want, and the indices following the last one desired.