Explain the components of Bootstrap

Last Updated : 23 Jul, 2025

Bootstrap components are pre-styled UI elements like buttons, forms, navbars, and more, built with HTML, CSS, and JavaScript. They provide a consistent and responsive design framework, facilitating rapid development of web applications with minimal customization required.

Bootstrap-components-image — Bootstrap components

List of components:

Component	Description
Jumbotron	It simply puts extra attention to particular content or information by making it larger and more eye-catching.
Alerts	It is a popup with a predefined message that appears after a particular action.
Buttons	Customized buttons used to perform an action in forms, dialogue boxes, etc. They come in multiple states, sizes, and predefined styles.
Button group	A group of buttons aligned in a single line, arranged vertically or horizontally.
Badge	A labeling component used to add additional information.
Progress Bar	Used to show the progress of a particular operation with a custom progress bar. It may have text labels, stacked bars, and animated backgrounds.
Spinner	Displays the loading state of websites or projects. Built with HTML and CSS, doesn't require JavaScript.
Scrollspy	Keeps updating the navigation bar to the currently active link based on the scroll position in the viewport.
List group	Displays an unordered series of content in a proper way.
Card	Provides a customizable, extensible, and flexible content container.
Dropdown	Drops the menu in the format of a list of links. Contextual and toggleable overlays.
Navs	Creates a basic and simple navigation menu with a .nav base class.
Navbar	The navigation bar at the top of a website or webpage.
Forms	Used to take multiple inputs at once from the user. Bootstrap has two layouts available: stacked and inline.
Input groups	Extend form controls by adding a button, button group, or text on either side of inputs.
Breadcrumb	Provides the location of the current page in a navigational hierarchy and adds separators through CSS.
Carousel	A slideshow of image or text content built with CSS 3D and JavaScript.
Toast	Displays a message for a small amount of time, usually a few seconds. Alert messages designed to imitate push notifications popular in desktop and mobile systems.
Tooltip	Provides small information about the element/link when the mouse hovers over it.
Popovers	Displays extra information about the element/link when clicked on it.
Collapse	A JavaScript plugin used to show or hide content.
Modal	A small popup window positioned over the actual window.
Pagination	Used to easily navigate between different pages, typically presented as a large block of connected links for accessibility.
Media Object	Used for repetitive and complex components like tweets or blogs. Images or videos are placed/aligned to the left or right of the content.

Examples of Bootstrap components

Example 1: In this example, we includes Bootstrap components: a navigation bar (nav), an alert, and a modal triggered by a button. It utilizes Bootstrap's CSS and JavaScript libraries for styling and functionality.

HTML

<!DOCTYPE html>
<html>

<head>
    <title>Components of BootStrap</title>

    <meta charset="utf-8" />
    <meta name="viewport" content="width=device-width, initial-scale=1" />

    <link rel="stylesheet" href=
"https://maxcdn.bootstrapcdn.com/bootstrap/4.3.1/css/bootstrap.min.css" />

    <script src=
"https://ajax.googleapis.com/ajax/libs/jquery/3.3.1/jquery.min.js">
    </script>
    <script src=
"https://cdnjs.cloudflare.com/ajax/libs/popper.js/1.14.7/umd/popper.min.js">
    </script>
    <script src=
"https://maxcdn.bootstrapcdn.com/bootstrap/4.3.1/js/bootstrap.min.js">
    </script>
</head>

<!-- A nav code-->
<br />
<h3>Nav:</h3>
<ul class="nav">
    <li class="nav-item">
        <a class="nav-link active" href="#">Active link</a>
    </li>
    <li class="nav-item">
        <a class="nav-link" 
           href="#provide link url here">
            First link
        </a>
    </li>
    <li class="nav-item">
        <a class="nav-link" 
           href="#provide link url here">
            second link
        </a>
    </li>
    <li class="nav-item">
        <a class="nav-link disabled" 
           href="#provide link url here" 
           tabindex="-1" 
           aria-disabled="true">Disabled</a>
    </li>
</ul>

<!-- A nav code-->

<!-- A small alert code-->
<h3>Alert:</h3>
<div class="alert alert-info" role="alert">
    A simple alert!
</div>

<!-- A small alert code-->
<h3>Modal:</h3>

<!-- Button trigger modal-->
<button type="button" 
        class="btn btn-success" 
        data-toggle="modal" 
        data-target="#exampleModal">
    geeksforgeeks
</button>

<!-- Modal -->
<div class="modal fade" 
     id="exampleModal" 
     tabindex="-1" 
     aria-labelledby="exampleModalLabel" 
     aria-hidden="true">
    <div class="modal-dialog">
        <div class="modal-content">
            <div class="modal-header">
                <h5 class="modal-title" id="exampleModalLabel">
                    geeksforgeeks
                </h5>
                <button type="button" 
                        class="close" 
                        data-dismiss="modal" 
                        aria-label="Close">
                    <span aria-hidden="true">&times;</span>
                </button>
            </div>
            <div class="modal-body">
                Hello, thanks for checking
                out geeksforgeeks!
            </div>
            <div class="modal-footer">
                <button type="button" 
                        class="btn btn-secondary" 
                        data-dismiss="modal">
                    Close
                </button>
                <button type="button" class="btn btn-primary">
                    Save
                </button>
            </div>
        </div>
    </div>
</div>

<!-- A button trigger modal-->

</html>

Output:

Example 2: This example we showcases a Bootstrap Jumbotron with centered text displaying information about GeeksforGeeks and a brief tutorial on Bootstrap.

HTML

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

<head>
    <title>Bootstrap Example</title>
    <meta charset="utf-8" />
    <meta name="viewport" 
          content="width=device-width, initial-scale=1" />
    <link rel="stylesheet" 
          href=
"https://maxcdn.bootstrapcdn.com/bootstrap/4.5.2/css/bootstrap.min.css" />
</head>

<body>
    <div class="container">
        <div class="jumbotron">
            <h1 class="text-center text-success">
                GeeksforGeeks
            </h1>

            <h3>Bootstrap Jumbotron Tutorial</h3>


            <p>
                Bootstrap is a free and open-source
                tool collection for creating responsive
                websites and web applications. It is
                the most popular HTML, CSS, and
                JavaScript framework for developing
                responsive, mobile-first websites.
            </p>

        </div>
    </div>
</body>

</html>

Output:

Bootstrap-components — Bootstrap components Example Output

Example 3: This example illustrates the use of Bootstrap toast.

HTML

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

<head>
    <title>Bootstrap Toast Example</title>
    <meta charset="utf-8" />
    <meta name="viewport" 
          content="width=device-width, initial-scale=1" />
    <link rel="stylesheet" 
          href=
"https://maxcdn.bootstrapcdn.com/bootstrap/4.5.2/css/bootstrap.min.css" />
    <script src=
"https://ajax.googleapis.com/ajax/libs/jquery/3.5.1/jquery.min.js">
    </script>
    <script src=
"https://cdnjs.cloudflare.com/ajax/libs/popper.js/1.16.0/umd/popper.min.js">
    </script>
    <script src=
"https://maxcdn.bootstrapcdn.com/bootstrap/4.5.2/js/bootstrap.min.js">
    </script>
</head>

<body>
    <div class="container">
        <h5>Toast Example</h5>
        <div class="toast" data-autohide="false">
            <div class="toast-header">
                <strong class="mr-auto text-primary">
                    GeeksforGeeks
                </strong>
                <button type="button" 
                        class="ml-2 mb-1 close" 
                        data-dismiss="toast">
                    &times;
                </button>
            </div>
            <div class="toast-body">
                A Computer Science portal for geeks.
            </div>
        </div>
    </div>

    <script>
        $(document).ready(function () {
            $(".toast").toast("show");
        });
    </script>
</body>

</html>

Output:

Bootstrap-components2 — Bootstrap components Example Output

Bootstrap 5 Introduction

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Explain the components of Bootstrap

List of components:

Examples of Bootstrap components

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