Arrays in JavaScript

Arrays are versatile data structures that allow developers to store and manipulate multiple values in a single variable. Arrays in JavaScript can hold elements of any data type, making them powerful tools for working with lists, collections, and ordered data.

Creating Arrays

Arrays can be created using square brackets [], and commas separate elements.

let fruits = ['apple', 'banana', 'orange'];

let numbers = [1, 2, 3, 4, 5];

Accessing Elements

Elements in an array can be accessed using their index. Array indices start at 0.

console.log(fruits[0]); // Output: 'apple'

console.log(numbers[2]); // Output: 3

Modifying Elements

Elements in an array can be modified by assigning new values to their corresponding indices.

fruits[1] = 'grape';

console.log(fruits); // Output: ['apple', 'grape', 'orange']

Array Methods

JavaScript provides a variety of built-in array methods for performing common operations, such as adding, removing, and searching elements.

fruits.push('kiwi'); // Add an element to the end of the array

fruits.pop(); // Remove the last element from the array

fruits.indexOf('orange'); // Find the index of an element