Array()

new Array()
new Array(element1)
new Array(element1, element2)
new Array(element1, element2, /* , */ elementN)
new Array(arrayLength)

Array()
Array(element1)
Array(element1, element2)
Array(element1, element2, /* , */ elementN)
Array(arrayLength)

const fruits = ["", ""];

console.log(fruits.length); // 2
console.log(fruits[0]); // ""

const arrayEmpty = new Array(2);

console.log(arrayEmpty.length); // 2
console.log(arrayEmpty[0]); // undefined
console.log(0 in arrayEmpty); // false
console.log(1 in arrayEmpty); // false

const arrayOfOne = new Array("2"); //  2  "2"

console.log(arrayOfOne.length); // 1
console.log(arrayOfOne[0]); // "2"

const fruits = new Array("", "");

console.log(fruits.length); // 2
console.log(fruits[0]); // ""