Awesome
ngx-countup - CountUp.js in Angular
This is an Angular directive wrapper around the core functionality of CountUp which is maintained in the CountUp.js repo. MIT License.
CountUp.js demo
Or see this angular version work by cloning this project and running ng serve
.
This module supports Angular 7 and newer. The CountUp module for Angular 1.x is here.
Contents:
Usage
Install the package in your project. For Angular 13 and newer:
npm i ngx-countup
If you are using an older version of Angular, use the following:
npm i ngx-countup@7
In app.module.ts
, import the module in your Angular module, or component if you are using standalone:
import { CountUpModule } from 'ngx-countup';
@NgModule({
imports: [
...
CountUpModule
],
...
})
Use it in your markup. Since it's a directive, it can be added to any element:
<h1 [countUp]="345" (complete)="doSomethingOnComplete()">0</h1>
Inputs:
countUp
: number to count tooptions
: CountUpOptions - fine-grain control over CountUpreanimateOnClick
: pass false to disable (defaults to true)
Outputs:
complete
: emits when the animation completes
Scroll Spy!
Scroll spy means it will automatically start animating when the CountUp element scrolls into view. Enable it in the options:
<h1 [countUp]="myEndVal" [options]="{ enableScrollSpy: true }">0</h1>
Defer animation
Bind [countUp] to some property. Leave myEndVal
undefined and the animation won't start until myEndVal
has a value.
<h1 [countUp]="myEndVal" [options]="myOpts">0</h1>
Re-animate
To re-animate CountUp programmatically, add a template ref variable to the markup (with #):
<h1 #countUp [countUp]="myEndVal" [options]="myOpts">0</h1>
Then, select it with @ViewChild
in your component's Typescript file (using the template ref # you created).
@ViewChild('countUp') countUp: CountUpDirective;
Finally, call the animate function where needed.
this.countUp.animate();
Remember to do this inside ngAfterViewInit()
to do something on component load.
Angular Universal
Yes, this component works with SSR and prerendering!
Testing
The test app in this repo has a passing test for a component that uses the CountUp directive, which you can use as an example. If your component uses the CountUp directive, include the CountUpModule in your TestBed:
beforeEach(async(() => {
TestBed.configureTestingModule({
imports: [
CountUpModule,
...
],
...
})
});
Contributing
Before you make a pull request, please follow these instructions:
- Make your edits to
./projects/count-up/src/lib/count-up.directive.ts
. - Run
npm start
and test your changes in the demo app.
Publishing (you don't need to do this, it’s for my own reference):
- Increment the version number if necessary (and
install-tarball
script). - Commit changes.
- Run
npm run package:countup
which builds and packs a tarball. - Install the tarball in the test app:
npm run install-tarball
. - Make app.module import from newly installed package.
- Run the test app with AOT compiler and make sure the demo works:
npm run serve:prod
. - Run
npm publish dist/count-up
- Discard changes.