Angular is a highly regarded framework for developing component-based web applications. It has numerous advantages, including productivity, sustainability, maintainability, and reusability. However, to fully leverage these benefits, you need to follow some best practices for Angular application architecture. In this blog, we will have to go over eight of these elements and demonstrate how to use features in current Angular projects.
- Use Angular CLI
The Angular CLI command-line tool allows you to create, run, test, and launch Angular apps. Additionally, it gives you a selection of settings and tools that adhere to the Angular style manual and standards. You can ensure that the entire codebase is elevated, consistent, and consistent while saving a tonne of time and hassle through using Angular CLI. To know the detail information to setup angular project with the help of Angular CLI. Feel free to visit our blog.
- Make a distinct module for each and every feature
Modules are the building blocks of Angular applications. They allow you to organize your code into logical units of functionality and dependencies. By creating a separate module for each feature, you can achieve better separation of concerns, modularity, and lazy loading. For example, if you are building an e-commerce app, you can have modules for products, cart, checkout, etc.
- Keep your code clean with the LIFT principle
LIFT stands for Locate, Identify, Flat, and Try DRY. It is an organized collection of rules that can allow you to manage your code such that it is simple to find, recognise, manage, and reuse. Here are some examples of applying the LIFT principle:
– Locate: Use consistent and descriptive naming conventions for your files and folders. For example, use .component.ts for components, .module.ts for modules, .service.ts for services, etc.
– Identify: Use clear and meaningful names for your classes, variables, functions, etc. For example, use ProductListComponent for a component that displays a list of products, ProductService for a service that handles product data, etc.
– Flat: Avoid nesting your files and folders too deeply. This can make it hard to find and navigate your code. Try to keep your files and folders at most four levels deep.
– Try DRY: Don’t repeat yourself. Avoid duplicating code and logic across your application. Instead, use abstractions, inheritance, composition, and dependency injection to reuse and share code.
- Don’t forget to use Dependency Injection (DI)
Dependency Injection is a design pattern that allows you to decouple your classes from their dependencies. Instead of creating and managing the dependencies yourself, you let Angular do it for you by using decorators like @Injectable(), @Component(), @Directive(), etc. This way, you can easily swap or mock the dependencies for testing or different environments.
- Avoid using @Input() and @Output() decorators as much as possible
@Input() and @Output() decorators are used to pass data between parent and child components using property binding and event binding respectively. While they are useful for simple scenarios, they can quickly become cumbersome and hard to maintain when you have multiple levels of nested components or complex data flows. Instead of using @Input() and @Output() decorators, consider using services or observables to communicate between components.
- Prefer observables over promises
Observables are a powerful way of handling asynchronous data streams in Angular. Unlike promises, which can only handle one value or error at a time, observables can handle multiple values or errors over time. Observables also offer many advantages over promises, such as:
– Lazy evaluation: Observables only execute when they are subscribed to.
– Cancellation: Observables can be cancelled by unsubscribing from them.
– Operators: Observables have a rich set of operators that allow you to transform, filter, combine, and manipulate data streams.
– Interoperability: Observables can work with other types of data sources, such as events, callbacks, promises, etc.
- Use smart and dumb components
Smart and dumb components are a common pattern for designing Angular components. Smart components are responsible for handling business logic, state management, data fetching, etc. Dumb components are responsible for displaying data and emitting events to the parent component. By using smart and dumb components, you can achieve better separation of concerns, reusability, testability, and performance.
- Make sure you understand how change detection works in Angular
Change detection is the process of updating the view when the model changes in Angular. Angular uses two types of change detection strategies: default and onPush. The default strategy checks every component in the component tree whenever an event or an observable emits a value. The onPush strategy only checks the component when its input properties change or when it is explicitly marked as dirty.
By understanding how change detection works in Angular, you can optimize your application performance by choosing the appropriate strategy for each component.
Author BIO:- Santosh Singh is a Front-End team lead at Devstringx Technologies, offer top-notch angular js development services in India. With 7+ years of experience in the field, he has worked on a variety of projects for various clients, ranging from small startups to large enterprises. He is passionate about technologies/programming languages and constantly stays up-to-date with the latest trends and advancements in the field.
