abp/docs/en/framework/ui/angular/caps-lock-directive.md

//[doc-seo]
{
    "Description": "Learn how to implement the `TrackCapsLockDirective` for password inputs in Angular, enhancing user experience with Caps Lock warnings."
}

Caps Lock Directive

In password inputs, You may want to show if Caps Lock is on. To make this even easier, you can use the TrackCapsLockDirective which has been exposed by the @abp/ng.core package.

Getting Started

TrackCapsLockDirective is standalone. In order to use the TrackCapsLockDirective in an HTML template, import it to related component. The selector of the directive is abpCapsLock. By adding the abpCapsLock event to an element, you can track the status of Caps Lock. You can use this to warn user.

See an example usage:

import { TrackCapsLockDirective } from '@abp/ng.core'

@Component({
  selector: 'sample-component',
  template: `
    <div class="d-flex flex-column">
      <label>Password</label>
      <input (abpCapsLock)="capsLock = $event"/>
      @if (capslock) {
        <i>icon</i>
      }
    </div>
  `,
  imports: [TrackCapsLockDirective]
})
export class SampleComponent{
  capsLock = false;
}

The abpCapsLock event has been added to the <input> element. Press Caps Lock to activate the TrackCapsLockDirective.

See the result:

To see Caps Lock icon press Caps Lock.