VVaibhavinvaibhav5122.hashnode.dev·Apr 26 · 6 min readCallbacks in JavaScript: Why They ExistOne 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 ot00
VVaibhavinvaibhav5122.hashnode.dev·Apr 26 · 5 min readSetting Up Your First Node.js Application Step-by-StepIf 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 unders00
VVaibhavinvaibhav5122.hashnode.dev·Apr 24 · 5 min readURL Parameters vs Query Strings in Express.jsWhen 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 th00
VVaibhavinvaibhav5122.hashnode.dev·Apr 22 · 6 min readHow Node.js Handles Multiple Requests with a Single ThreadOne 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 tho00
VVaibhavinvaibhav5122.hashnode.dev·Apr 22 · 7 min readSessions vs JWT vs Cookies: Understanding Authentication ApproachesWhenever 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 kno00
