What is an array in Javascript?

In JavaScript, arrays can be a collection of elements of any type. This means that you can create an array with elements of type String, Boolean, Number, Objects, and even other Arrays.

A pair of square brackets [] represents an array in JavaScript. All the elements in the array are comma(,) separated.

Here is an example of an array with four elements: type Number, Boolean, String, and Object.

const mixedTypedArray = [50, true, "Javascript", {}];

JavaScript Array Methods:-

push() – Insert an element at the end of the array.

Example:-

const names = ["Henry","John","Mike"];
names.push("Shaun");

unshift() – Insert an element at the beginning of the array.

Example:-

const names = ["Henry","John","Mike"];
names.unshift("Bella","David");

pop() – Remove an element from the end of the array.

Example:-

const names = ["Henry","John","Mike","David"];
names.pop();

shift() – Remove an element from the beginning of the array.

Example:-

const names = ["Henry","John","Mike","David"];
names.shift();

slice() – Create a shallow copy of an array.

Example:-

const names = ["Henry","John","Mike","David"];
const new =  names.slice(2);

length – Determine the size of an array.

Example:-

const names = ["Henry","John","Mike","David"];
let length = names.length;

Array.isArray() – Determine if a value is an array.

Example:-

const names = ["Henry","John","Mike","David"];
let result = Array.isArray(names);