如何在一个函数中调用多个事件类型?

How can I call multiple eventTypes in one function?

我在我的服务中写了以下功能:

public refresh(area: string) {
    this.eventEmitter.emit({ area });
  }

area 访问了我所有的 child 并且应该在 parent 中点击更新它们。

// 在孩子中

this.myService.eventEmitter.subscribe((data) => {
      if (!this.isLoading && data.area === 'childFirst') {
        this.loadData();
      }
    });
this.myService.eventEmitter.subscribe((data) => {
      if (!this.isLoading && data.area === 'childSecond') {
        this.loadData();
      }
    });
this.myService.eventEmitter.subscribe((data) => {
      if (!this.isLoading && data.area === 'childThird') {
        this.loadData();
      }
    });

//我的Parent-Component

// TS
 showChildFirst() {
    this.navService.sendNavEventUpdate('childFirst');
  }

  showChildSecond() {
    this.navService.sendNavEventUpdate('childSecond');
  }

  showChildThird() {
    this.navService.sendNavEventUpdate('childThird');
  }

 public refresh(area: string) {
    this.myService.refresh(area);
  }

// HTML
<!-- Refresh your childs -->
<button type="button" (click)="refresh()">Refresh</button>

如果我在函数中插入以下内容:refresh('childFirst') 第一个 child 组件被更新。有没有办法在refresh中刷新所有的eventTypes?

您可以更改 'refresh' 方法以获取字符串数组而不是单个字符串。所以方法会变成

 public refresh(areas: string[]) {
    areas.forEach(area =>
        this.myService.refresh(area);
    )
  }

调用它是

<button type="button" (click)="refresh(['childFirst','childSecond','childThird'])">Refresh</button>