@OmkarDevtsx

Omkar Gupta

@OmkarDevtsx

Joined December 2025

About

Nothing here yet.

Available for

Nothing here yet.

Omkar Gupta's blogs

Omkar's DevLogsomkargupta.hashnode.dev55 posts

Articles Threads Comments

Recently published

OGOmkar Guptaomkargupta.hashnode.dev

How React Virtual DOM Works Under the Hood

5d ago · 6 min read · The Problem: Why Not Just Update the DOM Directly? Before React, developers used to manipulate the Real DOM directly — using JavaScript or libraries like jQuery. It looked something like this: documen

Join discussion

OGOmkar Guptaomkargupta.hashnode.dev

Setting Up Your First Node.js Application — Step by Step

5d ago · 6 min read · 1. Installing Node.js Node.js is a runtime that lets you run JavaScript outside the browser — directly on your computer or a server. How to Install Go to the official Node.js website: 🔗 https://node

Join discussion

OGOmkar Guptaomkargupta.hashnode.dev

Callbacks in JavaScript: Why They Exist

5d ago · 5 min read · Before We Start: Functions Are Values Here's something that makes JavaScript special. In JavaScript, a function is just a value — like a number or a string. You can store it in a variable, pass it aro

Join discussion

OGOmkar Guptaomkargupta.hashnode.dev

The `new` Keyword in JavaScript — Explained Simply

5d ago · 5 min read · Introduction Have you ever seen code like this and wondered what new is doing? const person = new Person("Alice", 25); You're not alone! The new keyword looks small, but it does a lot of heavy liftin

Join discussion

OGOmkar Guptaomkargupta.hashnode.dev

URL Parameters vs Query Strings in Express.js

5d ago · 6 min read · First, Let's Look at a Full URL Before jumping in, let's break down what a URL is made of: A URL has two places where you can pass data to your server: Part Example Name /users/42 42 is the ID

Join discussion

Omkar Gupta

About

Available for

Omkar Gupta's blogs

Recently published

How React Virtual DOM Works Under the Hood

Setting Up Your First Node.js Application — Step by Step

Callbacks in JavaScript: Why They Exist

The `new` Keyword in JavaScript — Explained Simply

URL Parameters vs Query Strings in Express.js

Search Hashnode

Omkar Gupta

About

Available for

Omkar Gupta's blogs

Recently published

How React Virtual DOM Works Under the Hood

Setting Up Your First Node.js Application — Step by Step

Callbacks in JavaScript: Why They Exist

The `new` Keyword in JavaScript — Explained Simply

URL Parameters vs Query Strings in Express.js