Notes on AI, agents, web technologies, and building with LLMs

res.json() vs res.send() vs res.end() in Express

In this article we are discussing the differences between the json(), send() and end() methods available as part of Express response object.

Introduction to GraphQL

In this article, we'll take a look at GraphQL and go through a basic example while exploring why it's a great supplement for REST APIs.

Concurrent HTTP connections in Node.js

Why shouldn't JSONP​ be used?

JSONP is could be considered to be a useful way to avoid CORS errors however it has more cons than pros - this article discusses the most important factors.

Display real-time data in Angular

In this article, we'll be taking a look at two ways to display real-time data in an Angular application - one using a timeout and the other using sockets.

Unsubscribe from Angular/RxJS subscription

In this article, we are discussing when it is required to unsubscribe from an observable in Angular to avoid memory leaks.

Blockchain implementation using JavaScript

In this article, we are implementing a blockchain solution using JavaScript and while implementing, getting familiar with this emerging technology.

HTML Attributes vs DOM Properties

When working with various JavaScript frameworks, or only just by working in the field of web development, newcomers and novice developers often confuse attributes and properties concerning HTML pages. In this article, we'll clarify the difference between these two.

Hiding / removing elements in DOM using JavaScript

In this article, we'll take a look at how to hide and remove elements in DOM by using JavaScript, and we'll learn a few techniques and explain the differences between them.

Progressive Web Applications - Free Handbook