Prevent Angular 4 Component Reloading

I need my component to remain stable without reloading every time a new page is accessed. Currently, it reloads on each page change which disrupts the functionality. This issue is particularly evident in the Header section where there is a Marquee that reloads with every new page visit, impacting user experience.

https://i.sstatic.net/7PM9G.png

The Header, highlighted in blue, features a newsfeed-like slider that refreshes whenever a different page is loaded. To address this issue, I require the component to maintain its state and avoid unnecessary reloading when navigating between pages.

-----------------UPDATE---------------

HTML code snippet:

<div class="row page-header">
  <div class="col-sm-3 align-left"><img class="customer-logo" [src]="_DomSanitizationService.bypassSecurityTrustUrl('data:image/jpg;base64,'+ kioskservice.getLogo())"/></div>
  <div class="col-sm-6 align-center"><marquee direction="left" scrollamount="5" behavior="scroll">{{translationservice.getExpression("Appointment.AddEdit_PostalCodeServiceError")}}</marquee></div>
  <div class="col-sm-3 align-right"><i class="far fa-clock"></i>{{ clockservice.time | date:"HH:mm" }}</div>
</div>

Integration of the component into pages:

<page-header></page-header>
angulartypescript

Answer №1

It seems like you have a basic app without any code provided. Based on this information, I can assume that you have a <router-outlet> in your app.component.html file.

The main purpose of using the <router-outlet> is to allow Angular Router to match components with routing entries specified in the app.module whenever a new route is received at RouterModule.forRoot(....)

Any component rendered this way will be destroyed if the route changes and a different component is loaded.

To prevent this from happening, you have a couple of options:

  1. Add the component directly into the app.component. This ensures it is always displayed without using the router outlet. You can hide it using *ngIf along with some basic services if needed.
  2. Place the component into a separate router.

Update: If your app.component.html looks like the following:

<some random tags>
    <router-outlet></router-outlet>
</some random tags>

You can modify it as shown below:

<some random tags>
    <your-header-tag-name></your-header-tag-name>
    <router-outlet></router-outlet>
</some random tags>

You can access it using @ViewChild in the app.component.ts file.

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