How to use the arrow keys in lists to lower or raise-angle 2

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I am using the mat-list of angle 2 and could not make clicking the 'down arrow' or 'up arrow' button raise or lower an item in the list. How is this possible?

<mat-list role="list" class="listMinutes">
  <mat-list-item role="listitem" class="textListMinute" *ngFor= "let minute of hour.minutes" (click)="clickMinute(hour.hour,minute)">
     {{minute}} '    
  </mat-list-item>
</mat-list>  
    
asked by Sebastian Garcia Fischer 09.02.2018 в 19:42
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0 answers