typescript 控制errors2.component.ts

Posted 2021-05-21

export const CONTROL_ERRORS : OpaqueToken = new OpaqueToken('CONTROL_ERRORS');

const DEFAULT_CONTROL_ERRORS = {
  required: ":placeholder is required",
  minlength: ":placeholder should be at least :requiredLength characters"
}

@NgModule({
  ...
  providers: [{provide: CONTROL_ERRORS , useValue: DEFAULT_CONTROL_ERRORS} ]
})
export class AppModule {}