Vincent Guo 8555016eec docs: fix the payload in event-binding sample code (#30429)
after reading the context. there are  some clues to infer the payload should be the `item`, not `item.name`.
1.  EventEmitter<Item>.
2.  the desc say that:
The component defines a deleteRequest property that returns an EventEmitter. When the user clicks delete, the component invokes the delete() method, telling the EventEmitter to emit an **Item** object.

PR Close #30429
2019-05-15 14:12:02 -07:00

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850 B
TypeScript

/* tslint:disable use-input-property-decorator use-output-property-decorator */
import { Component, EventEmitter, Input, Output } from '@angular/core';
import { Item } from '../item';
@Component({
selector: 'app-item-detail',
styleUrls: ['./item-detail.component.css'],
templateUrl: './item-detail.component.html'
})
export class ItemDetailComponent {
@Input() item;
itemImageUrl = 'assets/teapot.svg';
lineThrough = '';
displayNone = '';
@Input() prefix = '';
// #docregion deleteRequest
// This component makes a request but it can't actually delete a hero.
@Output() deleteRequest = new EventEmitter<Item>();
delete() {
this.deleteRequest.emit(this.item);
this.displayNone = this.displayNone ? '' : 'none';
this.lineThrough = this.lineThrough ? '' : 'line-through';
}
// #enddocregion deleteRequest
}