empujando a una matriz
array = ["hello"]
array.push("world");
console.log(array);
//output =>
["hello", "world"]
array = ["hello"]
array.push("world");
console.log(array);
//output =>
["hello", "world"]let array = ["A", "B"];
let variable = "what you want to add";
//Add the variable to the end of the array
array.push(variable);
//===========================
console.log(array);
//output =>
//["A", "B", "what you want to add"]let items = [1, 2, 3]
items.push(4); // items = [1, 2, 3, 4]var array = [];
var element = "anything you want in the array";
array.push(element); // array = [ "anything you want in the array" ]/*The push() method adds elements to the end of an array, and unshift() adds
elements to the beginning.*/
let twentyThree = 'XXIII';
let romanNumerals = ['XXI', 'XXII'];
romanNumerals.push(twentyThree);
// now equals ['XIX', 'XX', 'XXI', 'XXII', 'XXIII']
romanNumerals.unshift('XIX', 'XX');
// now equals ['XIX', 'XX', 'XXI', 'XXII']array.push(...otherArray)