# Accordion Panel

(part of package '[Bootstrap Components](/reference/servoyextensions/packages/ui-component-packages/bootstrap-components.md)')\
Extends designtime/SolutionModel: [JSWebComponent](/reference/servoycore/dev-api/solutionmodel/jswebcomponent.md)\
Extends runtime: [RuntimeWebComponent](/reference/servoycore/dev-api/forms/runtimeform/elements/runtimewebcomponent.md)

The AccordionPanel component is a container similar to a TabPanel, but, instead of having tabs for showing / hiding forms, it has buttons that behave like an accordion, moving one way or the other.

This is a reference page; many components have detailed usage guides [here](https://docs.servoy.com/guides/develop/application-design/ui-components).

## Properties

### activeTabIndex

The index of the currently active tab in the accordion. Type: [Number](/reference/servoycore/dev-api/js-lib/number.md) Default Value: 0

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### containerStyleClass

The CSS class(es) to be added to container element - parent of the form element. Type: [Styleclass](/reference/servoy-developer/component_and_service_property_types.md#styleclass)

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### height

Minimum height of the accordion, should be used for responsive forms. Type: [Number](/reference/servoycore/dev-api/js-lib/number.md) Default Value: "500"

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### styleClass

The CSS class(es) to be added to accordion element. Type: [Styleclass](/reference/servoy-developer/component_and_service_property_types.md#styleclass)

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### tabIndex

The index used for tab order when setting focus. Type: [Number](/reference/servoycore/dev-api/js-lib/number.md) Default Value: 1

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### tabSeq

The tab sequence order used during design. Type: [Tabseq](/reference/servoy-developer/component_and_service_property_types.md#tabseq)

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### tabs

Array of tabs within the accordion component. Type: [Array\<CustomType\<bootstrapcomponents-accordion.tab>>](#tab)

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### visible

Whether the button is visible or not Type: [Visible](/reference/servoy-developer/component_and_service_property_types.md#visible)

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## Events

### onChangeMethodID(previousIndex,event,newIndex)

Fired after a different tab is selected

**Parameters:**

> * {[Number](/reference/servoycore/dev-api/js-lib/number.md)} previousIndex The previous tab index
> * {[JSEvent](/reference/servoycore/dev-api/application/jsevent.md)} event The event object associated with the tab change
> * {[Number](/reference/servoycore/dev-api/js-lib/number.md)} newIndex The tab index that is now set

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## API

### addTab(form,tabText,index)

Adds a tab to this accordion with that form and text on the given index

**Parameters:**

> * {[Form](/reference/servoy-developer/component_and_service_property_types.md#form)} form The form to be added as a new tab in the accordion component.
> * {[Tagstring](/reference/servoy-developer/component_and_service_property_types.md#tagstring)} tabText The text to be displayed on the tab for the added form.
> * {[Number](/reference/servoycore/dev-api/js-lib/number.md)} \[index] Optional. The position at which the tab should be added. If not provided, the tab is added at the end.

**Returns:** [CustomType\<bootstrapcomponents-accordion.tab>](#tab) The newly created tab object that represents the added form in the accordion component.

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### getTabAt(i)

Return the Tab of the given index.

**Parameters:**

> * {[Number](/reference/servoycore/dev-api/js-lib/number.md)} i The 1-based index of the tab to retrieve from the accordion component.

**Returns:** [CustomType\<bootstrapcomponents-accordion.tab>](#tab) The tab object at the specified index in the accordion component.

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### removeTabAt(index)

Removes a tab of the given index.\
Return true if this was sucessfull.

**Parameters:**

> * {[Number](/reference/servoycore/dev-api/js-lib/number.md)} index The 1-based position of the tab to be removed from the accordion component.

**Returns:** [Boolean](/reference/servoycore/dev-api/js-lib/boolean.md) True if the tab was successfully removed; false otherwise.

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### selectTabAt(index)

Select the tab of the given index.\
Return true if this was succesfull.

**@deprecated** use tabIndex property instead.

**Parameters:**

> * {[Number](/reference/servoycore/dev-api/js-lib/number.md)} index

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## Types

## tab

Defines a tab object for the AccordionPanel component. scripting type: CustomType\<bootstrapcomponents-accordion.tab>

* containedForm
  * The form contained within the tab.
  * **Type**: [form](/reference/servoy-developer/component_and_service_property_types.md#form)
* disabled
  * Whether the tab is disabled.
  * **Type**: [boolean](/reference/servoycore/dev-api/js-lib/boolean.md)
  * **Default Value**: false
* name
  * The unique name identifier of the tab.
  * **Type**: [string](/reference/servoycore/dev-api/js-lib/string.md)
* relationName
  * The relation name associated with the tab used for linking forms.
  * **Type**: [relation](/reference/servoy-developer/component_and_service_property_types.md#relation)
* text
  * The text displayed on the tab.
  * **Type**: [tagstring](/reference/servoy-developer/component_and_service_property_types.md#tagstring)
  * **Default Value**: "tab"

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