Animation Callbacks in Angular

Published on January 9, 2017


Animation Callbacks in Angular

We’ve touched on the basics of animation in Angular, so let’s now explore another feature of the animation system: animation callbacks. You can use the start and done callbacks to setup hook methods that get called at the start or end of animations.

This post discusses the animation system in Angular 2 and up.

Let’s start with markup like this, where our animation trigger is called itemAnim:

<ul *ngIf="items">
  <li *ngFor="let item of items"
      [@itemAnim]>{{ item }}</li>

We can add callbacks with the following syntax:

<ul *ngIf="items">
  <li *ngFor="let item of items"
      (@itemAnim.done)="animEnd($event)">{{ item }}</li>

The callbacks receive an AnimationTransitionEvent event that contains the following properties: fromState, phaseName (“start” or “done”), toState and totalTime.

In the component we can now define the callback methods:

// ...

animStart(event) {
  console.log('Animation Started');
  // do more stuff

animEnd(event) {
  console.log('Animation Ended');
  // do more stuff

Thanks for learning with the DigitalOcean Community. Check out our offerings for compute, storage, networking, and managed databases.

Learn more about our products

About the authors
Default avatar


While we believe that this content benefits our community, we have not yet thoroughly reviewed it. If you have any suggestions for improvements, please let us know by clicking the “report an issue“ button at the bottom of the tutorial.

Still looking for an answer?

Ask a questionSearch for more help

Was this helpful?
Leave a comment

This textbox defaults to using Markdown to format your answer.

You can type !ref in this text area to quickly search our full set of tutorials, documentation & marketplace offerings and insert the link!

Try DigitalOcean for free

Click below to sign up and get $200 of credit to try our products over 60 days!

Sign up

Join the Tech Talk
Success! Thank you! Please check your email for further details.

Please complete your information!

Featured on Community

Get our biweekly newsletter

Sign up for Infrastructure as a Newsletter.

Hollie's Hub for Good

Working on improving health and education, reducing inequality, and spurring economic growth? We'd like to help.

Become a contributor

Get paid to write technical tutorials and select a tech-focused charity to receive a matching donation.

Welcome to the developer cloud

DigitalOcean makes it simple to launch in the cloud and scale up as you grow — whether you're running one virtual machine or ten thousand.

Learn more
DigitalOcean Cloud Control Panel