new Array () in java script code example

Example 1: how to create array in javascript

/* 
	Array class is a global object that is used
    in the construction of arrays
    
    See - https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Array
*/
let array_1 = new Array(2);
	arr.push("James");
	arr.push("Fred");

let array_2 = ["James", "Fred"];

Example 2: how i create array in javascript

var fruits = ['Apple', 'Banana'];

console.log(fruits.length);
// 2

Example 3: how to make a array in javascript

//Im using a let type variable for the example because it's what i reccomend

let exampleArray = ["Example", "Lorem Ispum Dolor", "I think you've got it"]

//Here's how you select a single object in the list

exampleArray[1] 

/*In Javascript the arrays start counting at 0 which means i selected the 2nd
object in the list(Lorem Ispum Dolor) so if i wanna select the first array i
must type*/

exampleArray[0]

/*Now let's say you want to display it on the console, like let's say you are 
coding in Node.js and you wanna see the value of the array.
P.S: In the example im gonna show all the values of the array.*/

console.log(exampleArray[0, 1, 2]

Example 4: new array from javascript

// Sequence generator function (commonly referred to as "range", e.g. Clojure, PHP etc)
const range = (start, stop, step) => Array.from({ length: (stop - start) / step + 1}, (_, i) => start + (i * step));

// Generate numbers range 0..4
range(0, 4, 1);
// [0, 1, 2, 3, 4]

// Generate numbers range 1..10 with step of 2
range(1, 10, 2);
// [1, 3, 5, 7, 9]

// Generate the alphabet using Array.from making use of it being ordered as a sequence
range('A'.charCodeAt(0), 'Z'.charCodeAt(0), 1).map(x => String.fromCharCode(x));
// ["A", "B", "C", "D", "E", "F", "G", "H", "I", "J", "K", "L", "M", "N", "O", "P", "Q", "R", "S", "T", "U", "V", "W", "X", "Y", "Z"]