import { Component } from '@angular/core'; import { NgbTabChangeEvent } from '@ng-bootstrap/ng-bootstrap'; @Component({ selector: 'app-ngbd-tabs', templateUrl: './tabs.component.html' }) export class NgbdtabsBasicComponent { currentJustify = 'start'; currentOrientation = 'horizontal'; public beforeChange($event: NgbTabChangeEvent) { if ($event.nextId === 'tab-preventchange2') { $event.preventDefault(); } } }