node.js add array of array code example

Example 1: nodejs add element to array

var array = [];
array.push(element)
console.log(array);

Example 2: 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"]