js add to arry code example

Example 1: javascript append to array

var colors=["red","white"];
colors.push("blue");//append 'blue' to colors

Example 2: javascript pushing to an array

some_array = ["John", "Sally"];
some_array.push("Mike");

console.log(some_array); //output will be =>
["John", "Sally", "Mike"]

Example 3: add array to array javascript

// SPREAD OPERATOR
 const list1 = ["pepe", "luis", "rua"];
 const list2 = ["rojo", "verde", "azul"];
 const newList = [...list1, ...list2];
 // ["pepe", "luis", "rua", "rojo", "verde", "azul"]