Introduction

Ngx-Bootstrap has given a package for an open-source tool which a native Angular directive for Bootstrap 3 and 4. It contains all core components powered by Angular. In this article, we will learn about the Modal component, which is a cool feature of Ngx-bootstrap.

What is a Modal Popup?

A modal is a component that is displayed as a popup dialog box over the page.
Prerequisites
  • Basic knowledge of Angular
  • Visual Studio Code must be installed
  • Angular CLI must be installed
  • Node JS must be installed
Step 1
Let's create a new Angular project using the following NPM command:
ng new modal-example
Step 2
Now, let's create a new component using the following command:
ng g c ngx-bootstrap-modal
Step 3
Install ngx-bootstrap from npm using the following command:
  1. npm install ngx-bootstrap --save
Or
ng add ngx-bootstrap --component modal
This will be added to our root module
Step 4
Now let's add bootstrap styles in our index.html file.
For Bootstrap 3
<linkhref="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.7/css/bootstrap.min.css"rel="stylesheet">
For Bootstrap 4
<linkhref="https://maxcdn.bootstrapcdn.com/bootstrap/4.0.0/css/bootstrap.min.css"rel="stylesheet">
Step 5
Let add the template in our ngx-bootstrap-modal.component.html.
  1. <h2 style="text-align: center;">Example of Ngx-Bootstrap Modal</h2>
  2. <div style="width: fit-content;margin: auto;margin-top: 18px;">
  3. <button type="button" class="btn btn-primary" (click)="openModalWithClass(template)">Open modal</button>
  4. </div>
  6. <br>
  8. <ng-template #template>
  9. <div class="modal-header">
  10. <h4 class="modal-title pull-left">Modal</h4>
  11. <button type="button" class="close pull-right" aria-label="Close" (click)="modalRef.hide()">
  12. <span aria-hidden="true">×</span>
  13. </button>
  14. </div>
  15. <div class="modal-body">
  16. <h3>List of my upcomming articles in C# Corner</h3>
  17. <ul>
  18. <li>Use of Ngx-Bootstrap Modal in Angular 8</li>
  19. <li>Use of Ngx-Bootstrap Progres Bar in Angular 8</li>
  20. <li>Use of Ngx-Bootstrap Datepicker in Angular 8</li>
  21. <li>Use of Ngx-Bootstrap Timepicker in Angular 8</li>
  22. <li>Use of Ngx-Bootstrap Dropdown in Angular 8</li>
  23. <li>Use of Ngx-Bootstrap Sortable in Angular 8</li>
  24. <li>Use of Ngx-Bootstrap Collapse in Angular 8</li>
  25. <li>Use of Ngx-Bootstrap Carousel in Angular 8</li>
  26. <li>Use of Ngx-Bootstrap Typehead in Angular 8</li>
  28. </ul>
  29. <h3>You can check my all C# Corner Articles <a href="https://www.c-sharpcorner.com/members/siddharth-gajbhiye">here</a></h3>
  30. </div>
  31. <div class="modal-footer">
  32. <button type="button" class="btn btn-default" (click)="modalRef.hide()">Close</button>
  33. </div>
  34. </ng-template>
Step 6
Now, open the ngx-bootstrap-modal.component.ts file and add the following code in this file:
  1. import { Component, OnInit, TemplateRef } from '@angular/core';
  2. import { BsModalService, BsModalRef } from 'ngx-bootstrap/modal';
  4. @Component({
  5. selector: 'app-modal-popup',
  6. templateUrl: './modal-popup.component.html',
  7. styleUrls: ['./modal-popup.component.css']
  8. })
  9. export class ModalPopupComponent implements OnInit {
  10. modalRef: BsModalRef;
  11. constructor(private modalService: BsModalService) { }
  13. ngOnInit() {
  14. }
  15. openModalWithClass(template: TemplateRef<any>) {
  16. this.modalRef = this.modalService.show(
  17. template,
  18. Object.assign({}, { class: 'gray modal-lg' })
  19. );
  20. }
  21. }
The below code is opening the modal popup:
  1. this.modalRef = this.modalService.show(template)
And the below code is to hide the opened modal:
  1. this.modalRef.hide();
Here #template is the template reference which works like a trigger for the modal popup. With that, the template reference name modal is popping up.
Step 7
Now, open the app.component.html file and add the following code:
  1. <app-modal-popup></app-modal-popup>
Step 8
Let's open the app.module.ts file and add the following code:
  1. import { BrowserModule } from '@angular/platform-browser';
  2. import { NgModule } from '@angular/core';
  3. import { FormsModule, ReactiveFormsModule } from '@angular/forms';
  4. import { AppComponent } from './app.component';
  5. import { ModalPopupComponent } from './modal-popup/modal-popup.component';
  6. import { ModalModule } from 'ngx-bootstrap/modal';
  8. @NgModule({
  9. declarations: [
  10. AppComponent,
  11. ModalPopupComponent
  12. ],
  13. imports: [
  14. BrowserModule,
  15. ModalModule.forRoot(),
  16. FormsModule,
  17. ReactiveFormsModule,
  18. ],
  19. bootstrap: [AppComponent]
  20. })
  21. export class AppModule { }
Now its time for the Output:
Use Of Ngx-Bootstrap Modal Popup In Angular 8
Use Of Ngx-Bootstrap Modal Popup In Angular 8

Conclusion

In this article, we have seen the Ngx-Bootstrap Modal Popup in Angular 8 Application.
Please give your valuable feedback/comments/questions about this article, and please let me know how to improve it.