/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 vote333 views1 answer
Binding variable with td in angular site:stackoverflow.com
Javascript AngularJS
4 votes290 views1 answer
Angular component between tags
Javascript AngularJS
2 votes326 views3 answers
Change route on button click angular
Javascript AngularJS
0 vote338 views1 answer
Angular blockly
Javascript AngularJS
0 vote337 views3 answers
How click button and redirect angular
Javascript AngularJS
1 vote317 views1 answer
How to get utc time in angular
Javascript AngularJS
7 votes316 views5 answers
What is angularjs
Javascript AngularJS
0 vote325 views1 answer
Angular material remove outline
Javascript AngularJS
0 vote329 views1 answer
Animate change of class angular
Javascript AngularJS
0 vote377 views3 answers
Https://stackoverflow.com/questions/58589741/angular-8-hide-divs-and-show-div-on-button-click
Javascript AngularJS