Check out example codes for "drag and drop angular". It will help you in understanding the concepts better.
Code Example 1
<div class="example-box" cdkDrag>
I can only be dragged using the handle
<div class="example-handle" cdkDragHandle>
<button class="btn move" cdkDragHandle>
<mat-icon>open_with</mat-icon>
</button>
</div>
</div>
Code Example 2
<div cdkDropList class="example-list" (cdkDropListDropped)="drop($event)">
<div class="example-box" *ngFor="let movie of movies" cdkDrag>{{movie}}</div>
</div>
Learn ReactJs, React Native from akashmittal.com