Copie una matriz a otro JavaScript
/* Copying arrays or parts of arrays in JavaScript */
var fruit = ["apple", "banana", "fig"]; // Define initial array.
console.log(fruit); // ["apple", "banana", "fig"]
// Copy an entire array using .slice()
var fruit2 = fruit.slice();
console.log(fruit2); // ["apple", "banana", "fig"]
// Copy only two array indicies rather than all three
// From index 0 (inclusive) to index 2 (noninclusive)
var fruit3 = fruit.slice(0,2);
console.log(fruit3); // ["apple", "banana"]
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