Bootstrap 4 navbar-collapse not working angular - Javascript

Bootstrap 4 is a popular front-end framework used for developing responsive and mobile-first websites. However, sometimes developers may face issues with the navbar-collapse feature of Bootstrap 4 in Angular applications.

The Problem

The navbar-collapse feature in Bootstrap 4 is used to collapse the navigation links into a menu icon on smaller screens. However, when using Angular, the navbar-collapse feature may not function as expected.

The Cause

The issue with the navbar-collapse feature not working in Angular may be caused by various reasons, including:

1. Improper usage of the Bootstrap 4 classes for the navbar and navbar-collapse components.
2. Interference of other CSS styles with the Navbar component.
3. Incorrect installation of Bootstrap 4 or Angular packages.

The Solution

Here are a few solutions that can resolve the issue of the Bootstrap 4 navbar-collapse not working in Angular:

Solution 1: Correctly Implement Navbar and Navbar Collapse

Ensure that the navbar and navbar-collapse CSS classes are implemented as per Bootstrap 4 guidelines. Add the appropriate classes to the HTML elements and avoid overriding default Bootstrap styles.

<nav class="navbar navbar-expand-lg navbar-light bg-light">
  <a class="navbar-brand" href="#">Brand</a>
  <button class="navbar-toggler" type="button" data-toggle="collapse" data-target="#navbarNavAltMarkup" aria-controls="navbarNavAltMarkup" aria-expanded="false" aria-label="Toggle navigation">
    <span class="navbar-toggler-icon"></span>
  </button>
  <div class="collapse navbar-collapse" id="navbarNavAltMarkup">
    <div class="navbar-nav">
      <a class="nav-item nav-link active" href="#">Home <span class="sr-only">(current)</span></a>
      <a class="nav-item nav-link" href="#">Features</a>
      <a class="nav-item nav-link" href="#">Pricing</a>
      <a class="nav-item nav-link disabled" href="#">Disabled</a>
    </div>
  </div>
</nav>

Solution 2: Use ng-bootstrap

Ng-Bootstrap is a library that provides Angular-specific Bootstrap components, including the navbar-collapse. Import the necessary Ng-Bootstrap modules and components in the Angular application for optimal functionality.

import { NgbModule } from '@ng-bootstrap/ng-bootstrap'; 

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

<nav class="navbar navbar-expand-lg navbar-light bg-light">
  <a class="navbar-brand" href="#">Brand</a>
  <button class="navbar-toggler" type="button" ngbCollapse data-target="#navbarNavAltMarkup" aria-controls="navbarNavAltMarkup" aria-expanded="false" aria-label="Toggle navigation">
    <span class="navbar-toggler-icon"></span>
  </button>
  <div class="navbar-collapse collapse" id="navbarNavAltMarkup">
    <div class="navbar-nav">
      <a class="nav-item nav-link active" href="#">Home <span class="sr-only">(current)</span></a>
      <a class="nav-item nav-link" href="#">Features</a>
      <a class="nav-item nav-link" href="#">Pricing</a>
      <a class="nav-item nav-link disabled" href="#">Disabled</a>
    </div>
  </div>
</nav>

Solution 3: Check Dependencies and Installation

Ensure that Bootstrap 4 and its dependencies are correctly installed in the Angular application. Check the package.json file and update dependencies to the latest version. Here is the installation guide for Bootstrap 4:

npm install bootstrap jquery popper.js --save

import 'bootstrap';

Conclusion

The solutions provided above should help resolve the issue of the Bootstrap 4 navbar-collapse feature not working in Angular applications. Select the solution that best suits the project requirements and modify accordingly.