# Collapsible Area Action

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**Block Information**

Available in: Page Flow

Toolbox Category: Action

Block Type: [Regular](/app-editor/page-flow/block-anatomy.md#regular-block)
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**`Collapsible Area Action`** is a [regular block](/app-editor/page-flow/block-anatomy.md#regular-block) that allows you trigger the expansion or collapse of a [Collapsible Area](/app-editor/page-editor/built-in-elements/collapsible-area.md) element on the page or form.

{% hint style="success" %}
Refer to the [Collapsible Area Action in Data Design](/app-editor/page-flow/toolbox-blocks/collapsible-area-action-in-data-design.md) block for dynamically generated content.
{% endhint %}

The block comes in two modes which are discussed below.

## Mode 1 <a href="#mode-1" id="mode-1"></a>

<div align="left"><figure><img src="/files/2LPam5ERl8Z2c6ZZFDL8" alt="" width="372"><figcaption><p>Collapsible Area Action (Mode 1)</p></figcaption></figure></div>

The Mode 1 version of the Collapsible Area Action block consists of (from left to right):

* *Action*: [Dropdown configuration setting](/app-editor/page-flow/block-anatomy.md#dropdown) that allows you to choose from three options:
  1. Expand: Expands the element.
  2. Collapse: Collapses the element.
  3. Toggle: Toggles the state of the element i.e. collapses it if it is expanded and vice-versa.
* *Element*: [Selectable Input](/app-editor/page-flow/block-anatomy.md#selectable-input) to choose the [Collapsible Area](/app-editor/page-editor/built-in-elements/collapsible-area.md) element.

## Mode 2 <a href="#mode-2" id="mode-2"></a>

<div align="left"><figure><img src="/files/yG8tNCSQPX5A6bgf7cIs" alt="" width="341"><figcaption><p>Collapsible Area Action (Mode 2)</p></figcaption></figure></div>

The Mode 2 version of the Collapsible Area Action block consists of (from left to right):

* *Action*: [Dropdown configuration setting](/app-editor/page-flow/block-anatomy.md#dropdown) that allows you to choose from three options:
  1. Expand: Expands the element.
  2. Collapse: Collapses the element.
  3. Toggle: Toggles the state of the element i.e. collapses it if it is expanded and vice-versa.
* *Element*: [Value Parameter](/app-editor/page-flow/block-anatomy.md#value-parameters) that accepts either a [*text*](/app-editor/page-flow/references/value-types.md) value in the form of a [CSS Selector](https://developer.mozilla.org/en-US/docs/Learn/CSS/Building_blocks/Selectors) or an [*element*](/app-editor/page-flow/references/value-types.md) value[.](https://developer.mozilla.org/en-US/docs/Learn/CSS/Building_blocks/Selectors) The Element block comes pre-attached for your convenience but can be removed and customized.

***

## Usage Examples

The image below shows an example of the Mode 1 version where the selected [Collapsible Area](/app-editor/page-editor/built-in-elements/collapsible-area.md) element is expanded.

<div align="left"><figure><img src="/files/FZ7W4IA54lhqTOGszQmV" alt="" width="563"><figcaption><p>Example of Collapsible Area Action (Mode 1)</p></figcaption></figure></div>

In the next example we see a Mode 2 version where the *Element* value parameter is attached to a Text block containing a [CSS Selector](https://developer.mozilla.org/en-US/docs/Learn/CSS/Building_blocks/Selectors) that selects the same element. This time the element's state is toggled.

<div align="left"><figure><img src="/files/88GdsiWBlZWOApA0KLru" alt="" width="563"><figcaption><p>Example of Collapsible Area Action (Mode 2)</p></figcaption></figure></div>

{% hint style="success" %}
NOTE: Using a CSS selector, you can operate on multiple elements that match the criteria specified by the selector. See the references below for more information:

* [Wikipedia article on CSS](https://en.wikipedia.org/wiki/CSS#Selector)
* [Mozilla Developer Network article on CSS selectors](https://developer.mozilla.org/en-US/docs/Learn/CSS/Building_blocks/Selectors)
  {% endhint %}


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