Javascript essential file for Bootstrap 4

Help with Bootstrap I recently downloaded a web template that is based on bootstrap 4, and it has all the features needed to create a responsive website. However, I have a question regarding the inclusion of a javascript main file (main.js) in the code even though we are not working with javascript directly. When I opened the file in VScode by ctrl+clicking it, I noticed that it had a long code starting with the dollar ($) symbol which I assume is jquery. Can someone please clarify this for me?

<!DOCTYPE html>
<html lang="en">

// This section contains various links to external CSS files, such as Bootstrap and Font Awesome.

</head>

<body>

// The footer section with contact information and social media links.

 <footer id="footer">

 // Various useful links displayed in columns.

        <div class="col-lg-3 col-md-6 footer-links">
            <h4>Useful Links</h4>
            <ul>
              <li><i class="fa fa-angle-right"></i> <a href="#">Home</a></li>
              <li><i class="fa fa-angle-right"></i> <a href="#">About us</a></li>
              <li><i class="fa fa-angle-right"></i> <a href="#">Services</a></li>
              <li><i class="fa fa-angle-right"></i> <a href="#">Terms of service</a></li>
              <li><i class="fa fa-angle-right"></i> <a href="#">Privacy policy</a></li>
            </ul>
          </div>

// Contact information section.

          <div class="col-lg-3 col-md-6 footer-contact">
            <h4>Contact Us</h4>
            <p>
              A108 Adam Street <br>
              New York, NY 535022<br>
              United States <br>
              <strong>Phone:</strong> +1 5589 55488 55<br>
              <strong>Email:</strong> <a href="/cdn-cgi/l/email-protection" class="__cf_email__" data-cfemail="6900070f06290c11080419050c470a0604">[email protected]</a><br>
            </p>

// Social media links.

            <div class="social-links">

// Back to top button.

  <a href="#" class="back-to-top"><i class="fa fa-angle-up"></i></a>

 
  // Includes several script files from different libraries and also the "main.js" file mentioned earlier.
  
  </script src="lib/jquery/jquery.min.js"></script>
  <script src="lib/jquery/jquery-migrate.min.js"></script>
  <script src="lib/bootstrap/js/bootstrap.bundle.min.js"></script>
  <script src="lib/easing/easing.min.js"></script>
  <script src="lib/superfish/hoverIntent.js"></script>
  <script src="lib/superfish/superfish.min.js"></script>
  <script src="lib/wow/wow.min.js"></script>
  <script src="lib/venobox/venobox.min.js"></script>
  <script src="lib/owlcarousel/owl.carousel.min.js"></script>

  // Contact form script.

  <script src="contactform/contactform.js"></script>

  // This is the mysterious "main.js" file mentioned above.
  <script src="js/main.js"></script>   

</body>

</html>

javascriptbootstrap-4

Answer №1

Bootstrap's functionality heavily relies on a JavaScript file, typically named bootstrap.js or bootstrap.min.js, which is built using jQuery. This file is essential for enabling animations and effects that bring certain components, like the Carousel, to life.

If you're looking to create a responsive website without utilizing these dynamic components, simply include the standard CSS file bootstrap.min.css or bootstrap.css. You can then take advantage of the provided classes to structure your layout effectively.

When working with web templates obtained from third-party sources, it's common to encounter a single file labeled main.js, containing Bootstrap JS code along with other customizations. This often results in numerous files being linked within the index.html document, making the project challenging to understand and troubleshoot.

For beginners, it's advisable to begin by familiarizing yourself with the official documentation before delving into complex customizations.

Explore more about Bootstrap JS components here

Sample code for minimal Bootstrap integration:

<!DOCTYPE html>
<html>
<head>
  <meta charset="utf-8">
  <title>Bootstrap Minimal Example</title>
  <link rel="stylesheet" href="css/bootstrap.min.css">
</head>
<body>
  <div class="container">
    <!-- additional bootstrap structure is placed here -->
  </div>
</body>
</html>

Sample code for complete Bootstrap integration:

<!DOCTYPE html>
<html>

<head>
  <meta charset="utf-8">
  <title>Bootstrap Complete Example</title>
  <link rel="stylesheet" href="css/bootstrap.min.css">
</head>

<body>
  <div class="container">
    <!-- additional bootstrap structure is placed here -->
  </div>
  <script src="js/jquery-3.4.1.min.js"></script>
  <script src="js/popper.min.js"></script>
  <script src="js/bootstrap.min.js"></script>
</body>

</html>

Note: The examples assume that the necessary files are saved locally in the respective js and css folders of your project. Additionally, popper.js is vital for enabling Tooltips within the Bootstrap framework.

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