demo/src/app/components/+accordion/demos/one-at-a-time/one-at-a-time.html
<div class="checkbox">
<label>
<input type="checkbox" [(ngModel)]="oneAtATime">
Open only one at a time
</label>
</div>
<accordion [closeOthers]="oneAtATime">
<accordion-group heading="Header">
This content is straight in the template.
</accordion-group>
<accordion-group heading="Content 1">
<p>Content 1</p>
</accordion-group>
<accordion-group heading="Content 2">
<p>Content 2</p>
</accordion-group>
</accordion>