@Vaibhav5122

Vaibhav

@Vaibhav5122

Joined January 2026

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Cohort-26vaibhav5122.hashnode.dev34 posts

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Callbacks in JavaScript: Why They Exist

Apr 26 · 6 min read · One of the most interesting things about JavaScript is that functions are treated like normal values. That means functions can: be stored inside variables be passed as arguments be returned from ot

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

Apr 26 · 5 min read · If you want to become a backend developer, Node.js is one of the best technologies to start with. But before building APIs, authentication systems, or real-world applications, the first step is unders

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URL Parameters vs Query Strings in Express.js

Apr 24 · 5 min read · When building APIs or backend applications with Express.js, we often pass data through URLs. For example: /users/101 or /products?category=mobile&sort=price At first both may look similar because th

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How Node.js Handles Multiple Requests with a Single Thread

Apr 22 · 6 min read · One of the most surprising things beginners hear about Node.js is this: "Node.js is single-threaded." Then immediately another question comes: "If Node.js uses only one thread, how does it handle tho

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Sessions vs JWT vs Cookies: Understanding Authentication Approaches

Apr 22 · 7 min read · Whenever you log into an application like Instagram, YouTube, or Amazon, the application somehow remembers who you are even after refreshing the page. But how does that happen? How does the server kno

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Vaibhav

About

Available for

Vaibhav's blogs

Recently published

Callbacks in JavaScript: Why They Exist

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

URL Parameters vs Query Strings in Express.js

How Node.js Handles Multiple Requests with a Single Thread

Sessions vs JWT vs Cookies: Understanding Authentication Approaches

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Vaibhav

About

Available for

Vaibhav's blogs

Recently published

Callbacks in JavaScript: Why They Exist

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

URL Parameters vs Query Strings in Express.js

How Node.js Handles Multiple Requests with a Single Thread

Sessions vs JWT vs Cookies: Understanding Authentication Approaches