MEAN Stack stands for MongoDB, Express.js, Angular, and Node.js. It’s a full-stack JavaScript framework used for developing web applications from client to server to database.
Angular provides a structured framework for building dynamic single-page applications, with built-in features like two-way data binding, dependency injection, and component-based architecture.
Node.js acts as the server-side platform for the MEAN stack, enabling developers to build scalable network applications using JavaScript.
Two-way data binding allows synchronization between the model and the view. Changes in the user interface update the model, and changes in the model update the UI automatically.
RESTful APIs allow communication between the client and server using HTTP methods. In Angular, services like HttpClient are used to call RESTful APIs.
Angular directives are special tokens in the HTML that tell Angular’s compiler to attach a specified behavior to the DOM element.
Angular provides two ways to handle forms: template-driven forms and reactive forms. Template-driven forms are easier to implement, while reactive forms are more powerful and suitable for complex scenarios.
Dependency injection is a design pattern in Angular where objects are passed to a class instead of the class creating the objects. This increases modularity and testing efficiency.
RxJS is a library for reactive programming using observables. It is heavily used in Angular to handle asynchronous data streams and events.
NgRx is a state management library for Angular, which helps manage the application’s state using the Redux pattern.
MongoDB serves as the NoSQL database in the MEAN stack, providing scalable data storage and retrieval for the application.
Angular services are used to share data and logic across multiple components. They are typically used to handle data-fetching operations and business logic.
Angular is a full-fledged MVC framework, while React is a library focused on rendering views. Angular uses two-way data binding, while React uses one-way data flow.
Angular modules are containers that hold components, services, pipes, and directives. They help in organizing the application into smaller, maintainable parts.
Performance can be optimized by lazy loading modules, using Ahead of Time (AOT) compilation, avoiding unnecessary change detection, and optimizing data streams with RxJS.
Angular has a built-in Router module for navigation between different views and components. Routes are defined in the routing module and can be protected using guards.
Event binding allows you to listen to user events such as clicks or input in the template and respond to them in the component.
A SPA is a web application that loads a single HTML page and dynamically updates the page with content as the user interacts with the app.
Node.js uses an event-driven, non-blocking I/O model that makes it lightweight and efficient for building real-time applications, such as chat apps and online gaming platforms.
Pipes are used in Angular to transform data in the template, such as formatting dates or currency. Custom pipes can also be created.
