Concealing a navigation tab with Angular4 in Typescript: A tutorial

I have successfully implemented 3 tabs in my Angular 4 project. At the moment, I am focusing on working with the first two tabs and planning to tackle the third tab in the near future.

To keep things clean and organized, I am looking to use JavaScript/TypeScript to hide the third tab until I am ready to work on it.

In my app.component.html file, here is the code snippet:

<div>
  <ul class="nav-tabs">
    <li class="tab" *ngFor="let tab of tabs" [class.tab--active]="tab.active">
      <label (click)="clickTab(tab)">{{ tab.name }}</label>
    </li>
  </ul>
  <div class="tab-content">
    <app-detail *ngIf="tabs[0].active" [app1]="app1"></app-detail>
    <app-detail1 *ngIf="tabs[1].active" [app1]="app1"></app-detail1>
    <app-detail2 *ngIf="tabs[2].active" [app1]="app1"></app-detail2>
  </div>
</div>

Answer №1

What is the advantage of incorporating Typescript? Instead, consider utilizing CSS.

ul.nav-tabs li:nth-child(3){
   display: none;
}

Answer №2

If you want to deactivate a tab, simply use tabs[2].active = false in the constructor or ngOnInit of your AppComponent

export class ActiveTabsPipe implements PipeTransform {
    transform(values: any[]): any[] {
        return values.filter(val => val.active);
    }
}


<li class="tab" *ngFor="let tab of tabs | activeTabs" [class.tab--active]="tab.active">

Answer №3

Adjust your HTML like so:

<div>
  <ul class="nav-tabs">
    <li class="tab" *ngFor="let tab of tabs" *ngIf="!tab.hidden" [class.tab--active]="tab.active">
      <label (click)="clickTab(tab)">{{ tab.name }}</label>
    </li>
  </ul>
  <div class="tab-content">
    <app-detail *ngIf="tabs[0].active" [app1]="app1"></app-detail>
    <app-detail1 *ngIf="tabs[1].active" [app1]="app1"></app-detail1>
    <app-detail2 *ngIf="tabs[2].active" [app1]="app1"></app-detail2>
  </div>
</div>

Include a hidden property in your tab object that you wish to conceal, setting it to true.

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