Tag: javascript

The Reflect namespace object contains static methods for invoking interceptable JavaScript object internal methods. Some of the examples are provided below Detecting whether an object contains certain properties const duck = {   name: “Maurice”,   color: “white”,   greeting() {     console.log(`My name is ${this.name}`);   }, }; Reflect.has(duck, “color”); // true Reflect.has(duck,… Continue reading JavaScript method for invoking interceptable JavaScript object internal methods

SQLite in Node makes it easier than ever to persist data with server-side JavaScript. Get started with the node:sqlite module. Node 22.5.0 now bundles SQLite, a lightweight, in-process relational database that requires no additional infrastructure but packs considerable capability. Let’s get to know this handy new built-in feature in Node.js. What is SQLite? Relational databases are a key component… Continue reading Intro to Node’s built-in SQLite module

You’ve written and deployed your application and gathered users – congrats! But what’s next? Improvements, getting rid of bottlenecks, increasing execution speed, and more enhancements are in line. In order to make these improvements, you first have to be aware of your app’s existing performance characteristics. Only when you’ve identified the slow parts and the… Continue reading Node.js performance hooks and measurement APIs

⭐ What is OOPs ? Object-oriented programming is an approach to solving problems by creating objects . ⭐ 4 Pillars of OOP Terminologies in OOP Abstraction – Hiding internal details (show only essential info!) Encapsulation – The act of putting various components together (in a capsule) Inheritance – The act of deriving new things from existing things Polymorphism –… Continue reading OOPS in JS

In modern web applications, it is very common to have user authentication and authorization systems. These systems provide user-specific functionality and data, which requires that each user has a certain level of access and control over the resources they own. However, when these resources are accessed in a rapid and repetitive manner, it can lead… Continue reading How to Use express-rate-limiter to Limit User Rates in Node.js

🚀 When working with JavaScript, handling events efficiently can make a huge difference in terms of the performance and maintainability of your code. One powerful yet often overlooked technique is event delegation. In this blog post, we’ll explore what event delegation is, why it’s awesome, and how you can use it to optimize your event handling in… Continue reading ✨ Mastering JavaScript Event Delegation: An In-depth Guide!

What is the Event Loop? The Event Loop is a mechanism in JavaScript that allows the runtime to handle asynchronous operations. It ensures that JavaScript remains responsive and non-blocking by managing the execution of multiple tasks in a single-threaded environment. How Does the Event Loop Work? Single Threaded Execution: JavaScript is single-threaded, meaning it can only execute… Continue reading Event Loop

JavaScript is known for its single-threaded, non-blocking, asynchronous nature. This often raises questions like, “How can JavaScript handle multiple tasks at once if it’s single-threaded?” The answer lies in its powerful Event Loop. Understanding the Event Loop is crucial for mastering asynchronous operations and writing efficient, non-blocking code. In this article, we’ll explore the Event Loop in depth, demystify its… Continue reading Mastering JavaScript’s Event Loop and Concurrency: A Deep Dive

Introduction A Hash Map, also known as a Hash Table, is a data structure that implements an associative array abstract data type, a structure that can map keys to values. It uses a hash function to compute an index into an array of buckets or slots, from which the desired value can be found. The… Continue reading Hash Map using Javascript