Angular 17 – Know Everything About It

Angular 17 is the most recent release of the Google application development tool, which was published recently. Many new features and improvements are to be found as part of the latest version of Angular 17 that will benefit developers and the applications they build. In this article, we will go through the new components available in the new version of Angular 17, how to install this version, and other common queries. 

Angular 17 Key Features With Examples

The following are Angular 17 key features with examples:

TypeScript 5.2 Support

Angular 17 brings TypeScript 5.2, which ultimately introduces several improvements to the development process. With TypeScript 5.2, you get better type inference and better error reports, which can save time. For example, an improved facility for type checking lowers the likelihood of run time mistakes and increases the quality of developers’ codes.

Example: Angular 17 New features and improvements of type inference in TypeScript 5. 2 are helpful for automatic type identification of the variables, by which users do not have to declare types of the variables and constructions explicitly. This can also result in better conditions and less complicated code as it only handles necessary constructs. 

No Missing Commas

As for the backticks, the angular team thought introducing missing commas in code was necessary. Framework now displays kinder error messages and has checked with fixes of disappeared commas, improving the developer’s experience and lowering the number of syntax mistakes.

Example: If a developer accidentally makes a mistake and leaves out a comma in an array or object, Angular 17 new error handling will recommend how the error could be fixed to avert running time errors.

Build-in Control Flow Automatic Migration

In Angular 17, there is a built-in automatic control flow migration, which allows new versions to become available more quickly and the movement of control flow statements to the latest version of Angular. Thus limiting the number of changes that could be considered extensive in the transition to Angular 17.

Example: Control flow in syntax and structure are changed automatically during migration from a previous version of an Angular application by a migration tool. 

View Transition API Opt-in Support

Angular 17 now has experimental support for the brand-new View Transition API, which improves the user interface by adding seamless transitions between views. The developers can use this feature to add appealing transitions to the software applications without affecting their execution time.

Example: Developers can use the View Transition API for better animations to give the user an excellent experience when changing between different parts/ pages. 

Lazy Loaded Images Slow Down Page Render Error

Angular 17 has learned to handle the challenge where the lazy-loaded images negatively impact the page loading time. Optimizations have now been added to the framework to ensure that any photos loaded by this technique do not affect page loading substantially.

Example: With how lazy-loaded images are preloaded and improved in Angular 17, it is possible to have images loaded in the shortest time possible so that a page can become interactive.

Setup Routes for Unique Testing

Angular 17 introduces a feature that allows developers to set up routes specifically for unique testing scenarios. This is useful if one wants to check various routing configurations and if various routes perform according to what is expected.

Example: It is possible to devise specific test routes to confirm the correctness of the routing algorithm when used in the application.

CSS Automatic Removal

Another new feature in Angular 17 is CSS automatic removal. This improves effectiveness by expelling unused CSS from the last construct and lessens the size of the application.

Example: When using Angular 17, the bloat of unused CSS is removed by default, optimizing the application performance in the final build.

How to Install Angular 17? 

Installing Angular 17 is straightforward. You can use npm (Node Package Manager) to install the latest version. Here’s a step-by-step guide:

• Ensure Node.js is installed: Angular 17 requires Node.js. You can check your Node.js version by running node -v in your terminal.
• Update npm: Ensure that npm is up to date by running npm install -g npm.
• Install Angular CLI: Use the command npm install -g @angular/cli to install the latest Angular CLI globally.
• Create a new Angular project: Run ng new project-name to create a new project using Angular 17.
• Navigate to the project directory: Change into your project directory with cd project-name.
• Serve the application: Start the development server with ng serve.

Angular 17 Node Version

The table below outlines the compatible Node.js versions for Angular 17:

Actively Supported Versions

This table covers Angular versions currently under active support:

Unsupported Angular Versions

This table covers Angular versions that are no longer under long-term support (LTS). This information was correct when each version went out of LTS and is provided without any further guarantees. It is listed here for historical reference.

Before v9
Until Angular v9, Angular and Angular CLI versions were not synced.

Refer to the official Angular documentation for the most up-to-date compatibility information.

Angular 17 Interview Questions

For those preparing for an Angular interview, it’s essential to be familiar with both the new features and the general aspects of Angular. Common interview questions for Angular 17 might include:

• What are the key new features in Angular 17?
• How does Angular 17 improve performance compared to previous versions?
• Can you explain the significance of TypeScript 5.2 support in Angular 17?
• How do you handle lazy-loaded images in Angular 17?

For a detailed list of Angular interview questions, visit Edureka’s Angular interview questions.

Angular 17 Tutorial for Beginners

If you’re new to Angular or want to refresh your skills, a comprehensive tutorial is a great place to start. The tutorial covers everything from setting up your development environment to building and deploying an Angular application.

For a complete beginner’s guide to Angular 17, refer to Edureka’s Angular tutorial.

Also Read : How to install ng bootstrap in Angular

FAQs

What is new in Angular 17?

Some new features in Angular 17 include a new version of TypeScript, TypeScript 5. 2, which supports automatic migration for control flow, better handling of the images loaded when needed, and CSS automatically being stripped. These factors have an improving impact on managing developers’ work or experiences in addition to the performance of the applications being created. 

When was Angular 17 released?

Angular 17 release date was on 6 November 2023.

Is Angular 17 better than React?

Both Angular 17 and React have their strengths. Angular 17 offers a comprehensive framework with built-in tools and features, while React is a library focused on building user interfaces. The choice between Angular and React often depends on the specific needs of the project and developer preferences.

Is Angular 17 faster?

Angular 17 includes performance improvements such as better handling of lazy-loaded images and automatic removal of unused CSS, which can lead to faster application load times and improved performance.

What is SSR in Angular 17?

Server-Side Rendering (SSR) in Angular 17 allows applications to be rendered on the server before being sent to the client. This can improve initial load times and enhance SEO by providing search engines with fully rendered pages. For more details on SSR, refer to Angular’s official documentation.

Conclusion

Angular 17 brings a host of new features and improvements that enhance the development experience and application performance. From TypeScript 5.2 support to automatic CSS removal, these updates are designed to make Angular development smoother and more efficient. Whether you’re a seasoned developer or just starting, Angular 17 offers tools and features that can help you build robust and high-performing applications.

For further learning and exploration, consider checking out Angular training to deepen your understanding and skills in Angular development.