Bootstrap 5 Collapse: Creating Dynamic Content with Ease


Bootstrap is a popular front-end framework that simplifies web development by providing ready-to-use components and utilities. One of the key components in Bootstrap 5 is the Collapse feature, which allows you to create dynamic content that can be expanded or collapsed with a simple click. In this article, we will explore the Bootstrap 5 Collapse feature in detail and provide code snippets to help you understand its implementation.

Understanding the Collapse Component

What is Bootstrap 5 Collapse?

The Bootstrap 5 Collapse component is used to hide or show content by toggling its visibility. It is commonly used to create collapsible panels, accordions, and dropdown menus on websites. By default, the collapsed content is hidden, but it can be easily revealed by clicking on a trigger element.

Implementing the Collapse Component

To implement the Bootstrap 5 Collapse component, you need to follow these steps:

  1. Include the Bootstrap CSS and JavaScript files in your HTML document.
  2. Add the necessary HTML structure for the collapsible content and trigger element.
  3. Initialize the Collapse component using JavaScript.

Let’s explore each step in detail.

Step 1: Including Bootstrap Files

To get started with Bootstrap 5 Collapse, you need to include the Bootstrap CSS and JavaScript files in your HTML document. You can either download the files and host them locally or use a CDN (Content Delivery Network) to include them. Here’s an example:

<!-- Include Bootstrap CSS -->
<link rel="stylesheet" href="[email protected]/dist/css/bootstrap.min.css">

<!-- Include Bootstrap JavaScript -->
<script src="[email protected]/dist/js/bootstrap.bundle.min.js"></script>

Step 2: HTML Structure for Collapse

To create a collapsible element, you need to define the HTML structure with the appropriate classes. Here’s an example of a basic collapsible panel:

<div class="accordion">
  <div class="accordion-item">
    <h2 class="accordion-header" id="headingOne">
      <button class="accordion-button" type="button" data-bs-toggle="collapse" data-bs-target="#collapseOne" aria-expanded="true" aria-controls="collapseOne">
        Collapsible Item #1
    <div id="collapseOne" class="accordion-collapse collapse show" aria-labelledby="headingOne" data-bs-parent=".accordion">
      <div class="accordion-body">
        Content of Collapsible Item #1

In the above example, the accordion class is used to group the collapsible items together. The accordion-item class represents each individual collapsible item. The accordion-button class defines the trigger element that expands or collapses the content.

Step 3: Initializing the Collapse Component

To make the Bootstrap 5 Collapse component work, you need to initialize it using JavaScript. You can use the data-bs-toggle and data-bs-target attributes to specify the target element for collapsing. Here’s an example of how to initialize the Collapse component:

  var collapseElementList = []'.collapse'))
  var collapseList = (collapseEl) {
    return new bootstrap.Collapse(collapseEl)


Bootstrap 5 Collapse is a powerful component that allows you to create dynamic and interactive content on your website. By following the steps mentioned in this article, you can easily implement collapsible panels, accordions, and dropdown menus. With Bootstrap’s robust CSS and JavaScript library, you can customize the appearance and behavior of the Collapse component to fit your specific requirements.


Can I have multiple collapsible items on a single page?

Yes, you can have multiple collapsible items on a single page by following the HTML structure and initialization steps for each item.

How can I change the animation speed of the collapse effect?

You can modify the animation speed by overriding Bootstrap’s default CSS transitions. Refer to the Bootstrap documentation for more details.

Can I customize the appearance of the collapsible trigger element?

Yes, you can customize the appearance of the trigger element using CSS. Bootstrap provides various classes and utility options for customization.

Is Bootstrap 5 Collapse compatible with mobile devices?

Yes, Bootstrap 5 Collapse is fully responsive and works seamlessly on mobile devices.

Are there any alternative libraries to Bootstrap for creating collapsible content?

Yes, there are alternative libraries like Foundation, Semantic UI, and Bulma that offer similar collapsible content functionality.

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