angular-docs-cn/aio/content/examples/inputs-outputs/src/app/item-output/item-output.component.html

<h2>Child component with @Output()</h2>

<!-- #docregion child-output -->
<label for="item-input">Add an item:</label>
<input type="text" id="item-input" #newItem>
<button (click)="addNewItem(newItem.value)">Add to parent's list</button>
<!-- #enddocregion child-output -->