Angular Bootstrap Popup Login Form

Generate new angular project

ng new bootstrap-popup

cd bootstrap-popup

Integrate bootstrap in this project

Install bootstrap package

npm i bootstrap

Add bootstrap files

Bootstrap “node_modules/bootstrap/scss/bootstrap.scss” and “node_modules/bootstrap/dist/js/bootstrap.min.js” files add in styles and scripts section of src/angular.json file.

      "architect": {
        "build": {
          ...
          "options": {
            ...
            "styles": [
              "node_modules/bootstrap/scss/bootstrap.scss",
              "src/styles.scss"
            ],
            "scripts": [
              "node_modules/bootstrap/dist/js/bootstrap.min.js"
            ]
          },
        ...
      }

Add Reactive form module

Edit src/app/app.module.ts

import { NgModule } from '@angular/core';
import { ReactiveFormsModule } from '@angular/forms';
import { BrowserModule } from '@angular/platform-browser';

import { AppRoutingModule } from './app-routing.module';
import { AppComponent } from './app.component';

@NgModule({
  declarations: [
    AppComponent
  ],
  imports: [
    BrowserModule,
    AppRoutingModule,
    ReactiveFormsModule,
  ],
  providers: [],
  bootstrap: [AppComponent]
})
export class AppModule { }

Let’s build Reactive login form

edit src/app/app.compontent.ts file, and build reactive form

import { Component, OnInit } from '@angular/core';
import { FormControl, FormGroup, Validators } from '@angular/forms';

@Component({
  selector: 'app-root',
  templateUrl: './app.component.html',
  styleUrls: ['./app.component.scss']
})
export class AppComponent implements OnInit {
  title = 'bootstrap-popup';
  loginForm!: FormGroup;

  constructor() { }

  ngOnInit(): void {
    this.loginForm = new FormGroup({
      email: new FormControl('', [Validators.required, Validators.email]),
      password: new FormControl('', [Validators.required])
    })
  }

  get emailField(): any {
    return this.loginForm.get('email');
  }

  get passwordField(): any {
    return this.loginForm.get('password');
  }

  loginFormSubmit(): void {
    console.log(this.loginForm.value);
    // Call Api
  }
}

Add bootstrap modal and form to html

edit src/app/app.component.html, and add following code.

<nav class="navbar navbar-expand-lg navbar-light bg-light py-4">
  <div class="container">
    <a class="navbar-brand" href="#">Navbar</a>
    <button class="navbar-toggler" type="button" data-bs-toggle="collapse" data-bs-target="#navbarSupportedContent"
      aria-controls="navbarSupportedContent" aria-expanded="false" aria-label="Toggle navigation">
      <span class="navbar-toggler-icon"></span>
    </button>
    <div class="collapse navbar-collapse" id="navbarSupportedContent">
      <ul class="navbar-nav me-auto ps-5 mb-2 mb-lg-0">
        <li class="nav-item">
          <a class="nav-link active" aria-current="page" href="#">Home</a>
        </li>
        <li class="nav-item">
          <a class="nav-link" href="#">Link</a>
        </li>
        <li class="nav-item dropdown">
          <a class="nav-link dropdown-toggle" href="#" id="navbarDropdown" role="button" data-bs-toggle="dropdown"
            aria-expanded="false">
            Dropdown
          </a>
          <ul class="dropdown-menu" aria-labelledby="navbarDropdown">
            <li><a class="dropdown-item" href="#">Action</a></li>
            <li><a class="dropdown-item" href="#">Another action</a></li>
            <li>
              <hr class="dropdown-divider">
            </li>
            <li><a class="dropdown-item" href="#">Something else here</a></li>
          </ul>
        </li>
        <li class="nav-item">
          <a class="nav-link disabled" href="#" tabindex="-1" aria-disabled="true">Disabled</a>
        </li>
      </ul>
      <div class="d-flex">
        <!-- Button trigger modal -->
        <button type="button" class="btn btn-info px-4" data-bs-toggle="modal" data-bs-target="#loginModal">
          Login
        </button>
      </div>
    </div>
  </div>
</nav>
<!-- Modal -->
<div class="modal fade" id="loginModal" tabindex="-1" aria-labelledby="loginModalLabel" aria-hidden="true">
  <div class="modal-dialog modal-dialog-centered">
    <div class="modal-content">
      <div class="modal-header">
        <h5 class="modal-title" id="loginModalLabel">Login Form</h5>
        <button type="button" class="btn-close" data-bs-dismiss="modal" aria-label="Close"></button>
      </div>
      <div class="modal-body">
        <form [formGroup]="loginForm" (ngSubmit)="loginFormSubmit">
          <div class="mb-3">
            <label for="id_email" class="form-label">Email address</label>
            <input formControlName="email" [class.is-invalid]="emailField.touched && emailField.invalid" type="email"
              class="form-control" id="id_email">
            <div *ngIf="emailField.touched && emailField.hasError('required')" class="d-block invalid-feedback">Please
              provide a Email.</div>
            <div *ngIf="emailField.touched && emailField.hasError('email')" class="d-block invalid-feedback">Email
              address is
              not valid</div>
          </div>
          <div class="mb-3">
            <label for="id_Password" class="form-label">Password</label>
            <input formControlName="password" [class.is-invalid]="passwordField.touched && passwordField.invalid"
              type="password" class="form-control" id="id_Password">
            <div *ngIf="passwordField.touched && passwordField.hasError('required')" class="d-block invalid-feedback">
              Please
              provide a Password.</div>
          </div>
          <button [disabled]="loginForm.invalid" type="submit" class=" mt-3 btn btn-primary w-100">Submit</button>
        </form>
      </div>
    </div>
  </div>
</div>

I am going to render a simple bootstrap header with login form modal,