Bootstrap 5 Collapse
Tags: bootstrap, javascript, webdev, html
Published: 2021-06-29 14:00:56

## What is Bootstrap Collapse?

Collapse is a vertical element used to show and hide content via class changes.

______

## Installation

#### Manual installation (zip package)

To take advantage of  our Bootstrap images component and use them in your project, you first need to install the [MDB 5 Free package](https://mdbootstrap.com/docs/standard/getting-started/installation/#section-manual-installation)

_______

#### MDB CLI

Watch our [**Quick Start Tutorial**](https://mdbootstrap.com/docs/standard/getting-started/quick-start/) to discover and use the full potential of MDB 5 and MDB CLI

_______

#### NPM

###### Prerequisites

Before starting the project make sure to install [Node LTS (12.x.x recommended)](https://nodejs.org/en/).

###### Installation

To install MDB UI KIT in your project easily type the following command in the terminal:
```terminal
npm i mdb-ui-kit 
```

###### Importing JS modules

You can import the entire library or just individual modules:
```terminal
import * as mdb from 'mdb-ui-kit'; // lib
import { Input } from 'mdb-ui-kit'; // module 
```

###### Importing CSS file

To import MDB stylesheet please use the following syntax:
```terminal
@import '~mdb-ui-kit/css/mdb.min.css'; 
```

###### Importing SCSS modules

You can also import individual SCSS modules. To do it properly, we recommend to copy them from the node_modules/mdb-ui-kit/src/scss location directly to your project and import in the same way as CSS files.

###### Webpack integration

You can significantly speed up the process of creating a new project based on Webpack using our [Starter](https://github.com/mdbootstrap/mdb-webpack-starter).

__________

#### CDN

Installation via CDN is one of the easiest methods of integrating MDB UI KIT with your project. Just copy the latest compiled JS script tag and CSS link tag from [cdnjs](https://cdnjs.com/libraries/mdb-ui-kit) to the application.

Don't forget to add also Font Awesome and Roboto font if you need. Here's an example code:

###### CSS

```css
<!-- Font Awesome -->
<link
  href="https://cdnjs.cloudflare.com/ajax/libs/font-awesome/5.15.1/css/all.min.css"
  rel="stylesheet"
/>
<!-- Google Fonts -->
<link
  href="https://fonts.googleapis.com/css?family=Roboto:300,400,500,700&display=swap"
  rel="stylesheet"
/>
<!-- MDB -->
<link
  href="https://cdnjs.cloudflare.com/ajax/libs/mdb-ui-kit/3.3.0/mdb.min.css"
  rel="stylesheet"
/>
```


###### JS

```javascript
<!-- MDB -->
<script
  type="text/javascript"
  src="https://cdnjs.cloudflare.com/ajax/libs/mdb-ui-kit/3.3.0/mdb.min.js"
></script>
```


______
## Customization

##### Basic example

You can show and hide another element via class changes:

- `.collapse` hides content
- `.collapsing` is applied during transitions
- `.collapse.show` shows content

You can use a link with the `href` attribute, or a button with the `data-mdb-target` attribute. In both cases, the `data-mdb-toggle="collapse"` is required.

###### HTML

```html
<!-- Buttons trigger collapse -->
<a
  class="btn btn-primary"
  data-mdb-toggle="collapse"
  href="#collapseExample"
  role="button"
  aria-expanded="false"
  aria-controls="collapseExample"
>
  Link with href
</a>
<button
  class="btn btn-primary"
  type="button"
  data-mdb-toggle="collapse"
  data-mdb-target="#collapseExample"
  aria-expanded="false"
  aria-controls="collapseExample"
>
  Button with data-mdb-target
</button>

<!-- Collapsed content -->
<div class="collapse mt-3" id="collapseExample">
  Anim pariatur cliche reprehenderit, enim eiusmod high life accusamus terry richardson ad
  squid. Nihil anim keffiyeh helvetica, craft beer labore wes anderson cred nesciunt
  sapiente ea proident.
</div>
```

_______

##### Multiple targets

A `<button>` or `<a>` can show and hide multiple elements by referencing them with a selector in its `href` or `data-mdb-target` attribute. Multiple `<button>` or `<a>` can show and hide an element if they each reference it with their `href` or `data-mdb-target` attribute

###### HTML

```html
<!-- Buttons trigger collapse -->
<a
  class="btn btn-primary"
  data-mdb-toggle="collapse"
  href="#multiCollapseExample1"
  role="button"
  aria-expanded="false"
  aria-controls="multiCollapseExample1"
>
  Toggle first element
</a>
<button
  class="btn btn-primary"
  type="button"
  data-mdb-toggle="collapse"
  data-mdb-target="#multiCollapseExample2"
  aria-expanded="false"
  aria-controls="multiCollapseExample2"
>
  Toggle second element
</button>
<button
  class="btn btn-primary"
  type="button"
  data-mdb-toggle="collapse"
  data-mdb-target=".multi-collapse"
  aria-expanded="false"
  aria-controls="multiCollapseExample1 multiCollapseExample2"
>
  Toggle both elements
</button>

<!-- Collapsed content -->
<div class="row">
  <div class="col">
    <div class="collapse multi-collapse mt-3" id="multiCollapseExample1">
      Anim pariatur cliche reprehenderit, enim eiusmod high life accusamus terry
      richardson ad squid. Nihil anim keffiyeh helvetica, craft beer labore wes anderson
      cred nesciunt sapiente ea proident.
    </div>
  </div>
  <div class="col">
    <div class="collapse multi-collapse mt-3" id="multiCollapseExample2">
      Anim pariatur cliche reprehenderit, enim eiusmod high life accusamus terry
      richardson ad squid. Nihil anim keffiyeh helvetica, craft beer labore wes anderson
      cred nesciunt sapiente ea proident.
    </div>
  </div>
</div>
```




#### You can see more customization examples on the [📄 Collapse documentation page](https://mdbootstrap.com/docs/standard/components/collapse/)

______

## Crucial Resources

Here are the resources that we have prepared to help you work with this component:

1. Read  [📄 Collapse documentation page](https://mdbootstrap.com/docs/standard/components/collapse/) <-- start here
2. In to get the most out of your project, you should also get acquainted with other Components options related to Collapse. See the section below to find the list of them.
3. You can use predesigned Components in [📥 Starter Bootstrap 5 templates](https://mdbootstrap.com/freebies/)
4. Templates are a part of [📦 Free UI Kit for Bootstrap 5](https://mdbootstrap.com/docs/standard/)
5. After finishing the project you can publish it with CLI in order to receive [💽 Free hosting (beta)](https://mdbootstrap.com/docs/standard/cli/)

-----

## Related Content and Styles options & features
- [Accordion](https://mdbootstrap.com/docs/standard/components/accordion/)
- [Alerts ](https://mdbootstrap.com/docs/standard/components/alerts/)
- [Buttons](https://mdbootstrap.com/docs/standard/components/buttons/)
- [Badges](https://mdbootstrap.com/docs/standard/components/badges/)
- [Cards](https://mdbootstrap.com/docs/standard/components/cards/)
- [Button Group](https://mdbootstrap.com/docs/standard/components/button-group/)
- [Carousel](https://mdbootstrap.com/docs/standard/components/carousel/)
- [Chips](https://mdbootstrap.com/docs/standard/components/chips/)
- [Dropdowns](https://mdbootstrap.com/docs/standard/components/dropdowns/)
- [Lightbox](https://mdbootstrap.com/docs/standard/components/lightbox/)
- [List Group](https://mdbootstrap.com/docs/standard/components/list-group/)
- [Modal](https://mdbootstrap.com/docs/standard/components/modal/)
- [Popconfirm](https://mdbootstrap.com/docs/standard/components/popconfirm/)
- [Popovers](https://mdbootstrap.com/docs/standard/components/popovers/)
- [Progress](https://mdbootstrap.com/docs/standard/components/progress/)
- [Rating](https://mdbootstrap.com/docs/standard/components/rating/)
- [Spinners](https://mdbootstrap.com/docs/standard/components/spinners/)
- [Stepper](https://mdbootstrap.com/docs/standard/components/stepper/)
- [Toasts](https://mdbootstrap.com/docs/standard/components/toasts/)
- [Tooltips](https://mdbootstrap.com/docs/standard/components/tooltips/)


-----

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-----

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