/Javascript/AngularJS/Warn user before leaving page angular

Warn user before leaving page angular

import { CanDeactivate } from '@angular/router';
import { Injectable } from '@angular/core';
import { Observable } from 'rxjs/Observable';

export interface ComponentCanDeactivate {
  canDeactivate: () => boolean | Observable<boolean>;
}

@Injectable()
export class PendingChangesGuard implements CanDeactivate<ComponentCanDeactivate> {
  canDeactivate(component: ComponentCanDeactivate): boolean | Observable<boolean> {
    // if there are no pending changes, just allow deactivation; else confirm first
    return component.canDeactivate() ?
      true :
      // NOTE: this warning message will only be shown when navigating elsewhere within your angular app;
      // when navigating away from your angular app, the browser will show a generic warning message
      // see http://stackoverflow.com/a/42207299/7307355
      confirm('WARNING: You have unsaved changes. Press Cancel to go back and save these changes, or OK to lose these changes.');
  }
}

Source: stackoverflow.com

Similar codes

0 vote279 views1 answer
Animate change background color angular
Javascript AngularJS
0 vote437 views2 answers
Angular cors issue
Javascript AngularJS
0 vote266 views1 answer
Material icon button angular
Javascript AngularJS
8 votes301 views2 answers
Angular date pipi locale
Javascript AngularJS
1 vote343 views1 answer
Angular 10 set error on form controle
Javascript AngularJS
0 vote292 views1 answer
Angular animation scale width and height
Javascript AngularJS
0 vote291 views1 answer
Angular key value pipe compareFn example
Javascript AngularJS
37 votes377 views2 answers
Short date angular pipe
Javascript AngularJS
0 vote309 views1 answer
Calling angular component method in service
Javascript AngularJS
0 vote301 views1 answer
Sonarqube for angular application
Javascript AngularJS