Top Angular Best Practices Every Developer Should Follow
Angular is an incredibly effective and famous framework for developing progressive and profound Web applications. It is highly customizable, unlike other frameworks, and can serve as a base for building highly scaled-applications. But to get the full benefit, others should apply excellent practice when creating apps that allow them to also become usable in the long-term, efficient, and easy to expand.
Why is Angular used?
Angular is a powerful and highly integrated application that aims to provide an optimized framework for the creation of contemporary large-scale web applications. It has a rich set of built-in tools, features for two-way binding, Dependency Injection, TypeScript, and a profoundly component-based system, community. They make Angular the most suitable for building applications, which are scalable, easily maintainable, and perform well.
In creating modern complex single-page apps, monolithic enterprise applications, and mobile applications, Angular has proven itself as a first choice due to flexibility, ecosystem, and long-term support.
In the following blog, we will be discussing some of the most important best practices that are followed in Angular that a developer should follow.
1. Modularize Your Code
Angular is divided into something called modules, and everything is based around it. There must be a separate module for every single feature or functionality. With this, you are always in a position to handle, test or grow your application with less strain. It also acts as an organizational tool to group those elements logically together into your app.
Why it’s important:
Supports the principle of separation of the concerns.
Indirectly makes your codebase more maintainable.
Useful for lazy loading mechanism and maximization of site performance.
Best Practice:
Your application should be split into feature modules (you have a UserModule for the users-related feature) and shared modules (for the components which can be used universally, such as buttons, headers, etc.).
2. Follow Consistent Naming Conventions
It’s important to have the right naming convention for the usage so that one doesn’t have to puzzle over comprehending the code. According to Angular documentation, naming is critical since names should follow certain standards that are understandable in the future from the code authors.
Why it’s important:
I found that consistency decreased the cognitive load and hence allowed for easier traversal of the code.
Saves time as compared to when the wrong code is done due to misunderstandings of the code capabilities.
Best Practice:
Always use PascalCase for class name like LoginComponent, kebab-case for file namess like user-profile.component.ts and follow angular guidelines for naming variables and methods.
3. Use Lazy Loading for Modules
Lazy loading makes you load not all modules and features but load them only when they are demanded. This enhances the first moment of your application’s loading and tends to enhance the performance of your application.
Why it’s important:
Reduces the size of the first set of data.
Enhances the overall utility the user has with the site by shortening the amount of time it takes to load a page.
Best Practice:
When a feature module is needed, the use of routing should load it lazily as an optimized approach rather than loading all of them at the start of the application.
4. Avoid Using any Type
When you employ the any type in TypeScript, your type system becomes useless, and your application gets vulnerable to runtime problems. Another policy that should be followed to the dot if you engage TypeScript with Angular is type safety, and it has numerous advantages, which cannot be ignored.
Why it’s important:
Compile-time errors are minimized, and the amount of runtime bugs, inflation is decreased thanks to Type safety precautions.
That is why it makes your codebase more predictable and easier to be debugged.
Best Practice:
Says that we should use specific types for variables methods and function returns and if possible should avoid using any type and instead go for specific types such as unknown.
5. Leverage Angular CLI
The Angular CLI or commonly known as the Angular Command Line Interface is a great tool which simplifies most tasks that will be done while using Angular. It can be used for creating a project and components, for testing, and even to deploy something.
Why it’s important:
Reduces the duration required to perform a task as it reduces the number of operations you need to do.
This assures your code is a representation of the Angular’s best practices with the right structure of a component, service or a module.
Best Practice:
When creating components, services, modules, and other Angular functionalities keep using the Angular CLI to keep things uniform.
6. Use Services for Business Logic
By default, in Angular, components are expected to implement the business user interface, while services are meant to be handling business aspects and data. By compartmentalizing these concerns, you maintain components small and dedicated only to tasks related to UI.
Why it’s important:
Fosters separation of concerns that helps to make your code more manageable.
High level of testability and better testability by means of mocking of services.
Best Practice:
Services should deal with business logic and data while components should be responsible for display and use.
7. Use Strong Typing with Observables
Angular relies on observable to be used for response to HTTP requests and also events. It is crucial to always being clear of the types of values which an observable will yield and not just use any or defining it.
Why it’s important:
Observables provide you with better type safety and can detect errors better than when using other types of typing.
Auto-completion, refactoring, and a whole lot of other things to help make the development process as easy as possible.
Best Practice:
It is therefore always important to define types for your observables, with respect to the expected data structure.
8. Implement Proper Error Handling
It is so very important for user interactions and easy identification of errors. Angular offers the HttpInterceptor and catchError function that allows to catch and handle errors at one place.
Why it’s important:
Stops application from freezing and gives the users good intelligence on what to expect.
Reduces robustness and reliability of the application.
Best Practice:
Perform error handling from the center to capture errors in services, particularly when making HTTP requests, and have the fallback behaviors that are informative to the users.
9. Avoid Direct DOM Manipulation
The fact that Angular uses a declarative approach to the DOM means you should trust Angular to manipulate the DOM and avoid using independent methods such as document.querySelector or element.nativeElement.
Why it’s important:
With Angular’s directives it is possible to be assured that DOM manipulation operates well with the change detection mechanism from Angular.
That way you Break your code into subsets That are less complex thus making your code more manageable.
Best Practice:
Do not bend Angular and use the structural directives like *ngIf, *ngFor, ngClass and others to change the DOM, instead, do it directly with JS.
10. Write Unit Tests for Components and Services
In fact, Angular relies heavily on unit testing. It helps you ensure that the application behaves the way you need it to, to help you catch mistakes early on and to help harden your code as you grow and as you maintain and modify your application.
Why it’s important:
That way the code correctness is checked as well as the errors are captured at an early development phase.
It makes refactoring easier and the application is not likely to experience any bad behavior during changes.
Best Practice:
For unit testing of component and services use Jasmine and for runner tool use Karma. Make each of your components “TestBed” ready and make services ready for business logic testing.
Importance of Angular
Angular is now among the leading tools for creating interactive single-page web applications or SPAs, for short. A subsequent tool maintained and developed by Google, Angular can guarantee a strong and flexible frame to create large applications – that is why it is loved among developers. But what makes Angular so significant, and why it is chosen by many developers and organizations today?
The significance of Angular nowadays is in the fact that this framework offers a large and solid foundation indispensable for further development of complex applications on the web. It has many core features which makes it perfect for creating modern, large-scale applications: two way data binding, managing components as individual pieces of the application, cross-platform development, and active community support.
Advantages of Angular
Angular provides an unmatched list of benefits that propels it to a high rank among the leading and most popular front-end frameworks for contemporary websites. The completeness of the framework, the integrated environment, and the expandability of the structures make Angular the perfect candidate for implementing dynamic, large-scale application. It is now appropriate to dwell on the key advantages in more detail.
1. Modular and Scalable Architecture
One more advantage that Angular has is its modularity, as a result of which entire applications are divided into functional components. This modularity makes it easier to deal with when the applications which depend on it grow. Many capabilities including lazy loading make it viable for Angular only to load sections of the application when needed, which not only makes it faster but also more scalable. This makes Angular especially useful in the development of enterprise-level application since scalability is very important.
2. Two-Way Data Binding
One of the most important aspects of the framework is the two way data binding of Angular. It also binds the view (UI) and the model such that any change that happens for example in the model will easily affect the view, and vice versa. This decreases reliance on the DOM and eliminates the possibilities of many mistakes and helps developers concentrate on superordinate tasks. This kind of synchronization makes development easier which is evident in data-driven applications.
3. Comprehensive Tooling and Ecosystem
Angular has a vast number of integrated tools and libraries that are valuable for driving the productivity of the developer. The CLI (Command Line Interface) brings out simpler tasks such as creation of a new project, formation of components, services, modules, among others as well as running a test. Moreover, Angular features testing with plain unit-tests using frameworks like Jasmine and Karma as well as end-to-end tests supported by Protractor in order minimize the number of in-depth and serious issues within the views developed for the applications.
4. TypeScript for Better Development Practices
Angular is developed with TypeScript – a statically typed programming language derived from JavaScript. TypeScript improves JavaScript and incorporates features like type , interfaces and generics, obviously, the code is more comprehensible and manageable. Due to their typing characteristics, over-sights are recognizable at compile time, excluding the possibility of an extravagant number of failures in the production code. Also, TypeScript supports modern such JavaScript features as async/await and ES6 modules what allows developers write cleaner and more maintainable code.
Learn at Softronix
If you have a desire to learn at Softronix, it can be a platform or company or any educational service, it can be an opportunity to enhance your knowledge in any field of software development or IT solutions, or any technological front like Angular. Most tech organizations such as Softronix provide unique sets of courses, workshops, and training sessions that are tailored for new, intermediate, and professional developers. To begin with, you should visit their learning page to check if they offer all the necessary learning material, tutorials, or certification relevant to your needs.
Conclusion
Applying these best practices should help developers reach higher levels of angular applications quality, maintainability, and performance. Make your code structured implementing modularity, utilize lazy loading, placed your business logics on services, and take advantage on CLI. By adhering to these practices your code will be cleaner, scalable and much easier to manage in the long haul.
When you start using these Angular best practices, you will be able to develop better Sep 26 ’17 at 21:31 Angular apps that are easier to manage and update, leading to the development of better applications as your business expands.
Summing up, education at Softronix or any other such on-line learning environment can provide you with the program in technology and the software development pathway. If implemented, these opportunities help to strengthen technical competencies at the same time fostering awareness of industry advancements and state of practice. Finally, practical knowledge accompanied by theoretical makes a person an expert in any technology possible within the shortest period and environments such as Softronix are ideal for this kind of learning.
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