Emitting events from a parent component to a child component

In the scenario mentioned above, using (click)="toggleSideBar()" in side-bar.component.ts does not close the sidebar. Is there a solution to this issue?

Answer №1

There were actually two instances of the app-side-bar, so even if one was hidden, the other was always visible. To fix this issue in your app.component.html file, try implementing the following:

<div class="container">
  app component
  <br>
  <br>

  <app-side-bar [isOpen]="sideBarIsOpened" (toggle)="toggleSideBar()"></app-side-bar>

  <br>
  <br>

  <button (click)="toggleSideBar()">Toggle sidebar from app component</button>
</div>

Answer №2

Your HTML code contains two instances of the sidebar, causing an issue with visibility. Check out this link for a visual representation.

  <app-side-bar 
    [isOpen]="sideBarIsOpened" 
    (toggle)="toggleSideBar()" 
    style="background-color: blue"></app-side-bar>
  <app-side-bar 
    [isOpen]="sideBarIsOpened"
    style="background-color: red"></app-side-bar>

The issue is that only the second sidebar (the red one) is visible because both sidebars are in the same position within the HTML structure. The first sidebar, which is hidden behind the second, lacks the necessary event listener. As a result, when the red sidebar emits the event, it is not received by the app component, causing both sidebars to behave unpredictably.

If your intention is to have only one sidebar, you may need to rethink your approach. Feel free to clarify your goal for further assistance...

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