Javascript data structures
Created By: chatGPT
JavaScript provides several built-in data structures that are useful for different purposes. Understanding these structures is essential for writing effective and efficient code. Below are some of the most common data structures in JavaScript.
1. Arrays: Arrays are ordered collections of values, which can be of any type. They allow for the storage of multiple values in a single variable.
const fruits = ['apple', 'banana', 'cherry'];2. Objects: Objects are collections of key-value pairs. They are used to store data in a structured way, allowing for properties and methods to be grouped together.
const car = { make: 'Toyota', model: 'Camry', year: 2021 };3. Sets: Sets are collections of unique values and are useful when you want to ensure that no duplicates are present in your data.
const uniqueNumbers = new Set([1, 2, 2, 3]);4. Maps: Maps store key-value pairs where keys can be of any type, unlike objects which can only have strings as keys. Maps maintain the insertion order of keys.
const map = new Map();
map.set('name', 'John');
map.set('age', 30);Arrays, Objects, Sets, and Maps each have their own set of methods and properties that make them suitable for various tasks. For instance, arrays come with methods like
When working with these data structures, it’s crucial to choose the right one based on the requirements of your application, such as whether you need unique values, ordered values, or complex data representations. Understanding these differences can significantly affect both performance and code maintainability..push(), .pop(), .slice(), while objects use dot notation or bracket notation for property access.// Accessing an element in an array
const firstFruit = fruits[0];
// Accessing a property in an object
const carModel = car.model;