angular - 如何在 Angular 8 中使用 EventEmitter

Question

每当我创建 EventEmitter 时，它都会抛出错误

Expected 0 type arguments, but got 1.

statusUpdated = new EventEmitter<string>();

尝试过这个:

statusUpdated = new EventEmitter<>;
statusUpdated = new EventEmitter<>();
statusUpdated = new EventEmitter<{}>();

Answer 1

您必须从核心导入它

import {EventEmitter } from '@angular/core'