Array initializations

by eitanp461

JavaScript

const arr1 = new Array(6); // Initialize an array with length = 6

const arr2 = [1,2,3,4,5,6]; // Initialize an array with 6 elements

console.log(arr1.length); // 6
console.log(arr2.length); // 6

arr1.forEach(item => console.log('arr1', item)); // Nothing is printed
console.log(arr1[0]); // undefined
arr2.forEach(item => console.log('arr2', item)); // Prints 6 messages
console.log(arr2[0]); // 1