Gain insights into creating beautiful, performant animations in Angular. Delve into CSS transitions, Web Animations API, and Angular animations, while exploring performance and debugging techniques.

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Animations play a crucial role in an application’s user experience (UX). A set of well-designed animations can make an application feel fast, polished, and professional. However, creating animations can be a daunting task that involves knowing what is available and how to choose the right approach for each task.

You will start with the easiest methods and move on to more advanced animation methods as you make your way through this course. You’ll start with general animation techniques, covering CSS transitions, animations, and the Web Animations API, followed by Angular animations and integrating external animation libraries. Lastly, you’ll finish with a deep dive into animation performance and debugging.

This course will provide you with information and advice to help you create beautiful and performant animations in Angular applications. By the end of the course, you will be able to create performant animations and choose the right tools to create them effectively.

Animations in Angular

CSS animations have certain characteristics that make them ideal candidates for animations:

- They have infinite iterations.
- They have multi-step keyframes.
- They have entrance and exit animations.

These traits, mixed with Angular’s class-binding system, form the perfect combination for the use cases we’ll cover in this lesson.


Let’s take a look at some practical applications of CSS animations.


# Infinite loader

A **loader** communicates to the users the current state of the application. Used effectively, a loader can avoid frustration for the end users by telling them what the application is doing. For example, when a page loads and the app waits for a response from the server, the app displays a blank white screen. From the user’s perspective, this could be confusing because they wouldn’t know if the app is working or not.

This isn’t to say that we don’t have to fix any slowness in the application, but some factors are simply out of our control. We could optimize the client and server side to make it really fast, but what if the user is on a slower internet connection?

Displaying a loader as the user waits is an effective way to work around any issue that could potentially cause the users to wait.

CSS animations are ideal for creating loaders because they can execute an animation an infinite number of times while the user waits for the necessary parts of the app to finish loading.

A simple spinner can be animated by adding the following CSS code using CSS animations to rotate the target element 360 degrees with an infinite iteration count.


Apply what we've learned about CSS animations to some common use cases.

Before We Start

CSS Transitions

CSS Animations

Web Animations API (WAAPI)

Angular Animations

Third-party Animation Libraries

Appendix

Conclusion

Real World Use Cases

Infinite loader