Introduction Directives in Angular are powerful tools that allow developers to manipulate the DOM dynamically. There are three types of directives: 1. Structural Directives Structural directives are prefixed with an asterisk (*) and are responsible for altering the structure of the DOM. 1.1 *ngIf – Conditional Rendering *ngIf adds or removes an element from the…
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Chapter 1.2 Templates & Data Binding in Angular – Interpolation, Property & Event Binding, Two-way Binding
Introduction Templates and data binding are fundamental concepts in Angular that allow developers to create dynamic and interactive applications. Understanding interpolation, property binding, event binding, and two-way binding is crucial for building efficient Angular applications. Angular Templates A template in Angular defines the UI structure of a component. It is an HTML file (or inline…
Chapter 1.1 Modules & Components in Angular – NgModules & Component Lifecycle Hooks
Introduction Angular is a popular front-end framework that follows a modular architecture. Two core building blocks of an Angular application are Modules (NgModules) and Components. Understanding these concepts is crucial for developing scalable and maintainable applications. What Are Angular Modules (NgModules)? Angular applications are divided into modules to enhance maintainability and reusability. Key Features of…
Fixing the this Issue in setTimeout in JavaScript
When working with JavaScript, a common issue developers encounter is the incorrect reference of this inside setTimeout. If you have ever written code like this: You might expect this to log “Product name is: Laptop”, but instead, it prints “Product name is: undefined” (or throws an error in strict mode). Let’s explore why this happens…
Understanding package.json for Your Project
When starting a React project, you’ll encounter a file called package.json. This file acts like a roadmap for your project, listing the tools, libraries, and scripts your app needs to work. Here’s a beginner-friendly breakdown of what each entry in your package.json means. Basic Information Scripts Scripts automate tasks like starting the development server or…
Understanding Conventional Commit Messages
When collaborating on a software project, clear and standardized commit messages play a vital role in ensuring the codebase remains maintainable and easy to understand. One widely-adopted approach is the Conventional Commits specification, which categorizes commits based on their purpose. Here’s a breakdown of commonly used types: 1. fix: For Bug Fixes Use this type…
Mastering the Observer Pattern in JavaScript: A Deep Dive with Advanced Concepts
The Observer Pattern is one of the most widely used behavioral design patterns in software development. It’s particularly useful in JavaScript for building event-driven systems, reactive programming, and managing state changes efficiently. In this blog, we’ll explore the Observer Pattern in detail, its implementation in JavaScript, and advanced concepts like unidirectional data flow, Subject-Observer relationships,…
Mastering Asynchronous Programming in JavaScript: A Comprehensive Guide
In today’s fast-paced web development world, asynchronous programming is a cornerstone of JavaScript. Whether you’re fetching data from an API, handling user interactions, or processing large datasets, understanding how to work with asynchronous code is essential. In this blog, we’ll explore the fundamentals of asynchronous programming in JavaScript, its importance, and the tools available to…
What is LangChain?
LangChain is a powerful framework designed to streamline the development of applications that leverage large language models (LLMs). By integrating various tools, data sources, and workflows, LangChain simplifies creating AI solutions such as chatbots, content generators, question-answering systems, and more. If you’re new to artificial intelligence and large language models, LangChain provides an intuitive way…
React design interview question with expected answers
How would you design a scalable and reusable component architecture for a complex web application? Scenario: You’re tasked with building a dashboard for a large enterprise application. The dashboard includes charts, tables, filters, and widgets. It should support dynamic data updates, user customizations, and internationalization. Key Points the Interviewer is Looking For: Expected Solution 1….