Vue DropDownButton API
The DropDownButton is a button that opens a drop-down menu.
See Also
- Set Up DevExtreme: Angular | Vue | React | jQuery | AngularJS | Knockout | ASP.NET MVC 5 | ASP.NET Core
 - Configure a Widget: Angular | Vue | React | jQuery | AngularJS | Knockout | ASP.NET MVC 5 | ASP.NET Core
 
Props
This section describes options that configure the DropDownButton widget's contents, behavior, and appearance.
| Name | Description | 
|---|---|
| accessKey | Specifies the shortcut key that sets focus on the widget.  | 
            
| activeStateEnabled | Specifies whether or not the widget changes its state when interacting with a user.  | 
            
| dataSource | Provides data for the drop-down menu.  | 
            
| deferRendering | Specifies whether to wait until the drop-down menu is opened the first time to render its content.  | 
            
| disabled | Specifies whether the widget responds to user interaction.  | 
            
| displayExpr | Specifies the data field whose values should be displayed in the drop-down menu.  | 
            
| dropDownContentComponent | An alias for the dropDownContentTemplate property specified in React. Accepts a custom component. Refer to Using a Custom Component for more information.  | 
            
| dropDownContentRender | An alias for the dropDownContentTemplate property specified in React. Accepts a rendering function. Refer to Using a Rendering Function for more information.  | 
            
| dropDownContentTemplate | Specifies custom content for the drop-down field.  | 
            
| dropDownOptions | Configures the drop-down field.  | 
            
| elementAttr | Specifies the attributes to be attached to the widget's root element.  | 
            
| focusStateEnabled | Specifies whether users can use keyboard to focus the widget.  | 
            
| height | Specifies the widget's height.  | 
            
| hint | Specifies text for a hint that appears when a user pauses on the widget.  | 
            
| hoverStateEnabled | Specifies whether the widget changes its state when a user hovers the mouse pointer over it.  | 
            
| icon | Specifies the button's icon.  | 
            
| itemComponent | An alias for the itemTemplate property specified in React. Accepts a custom component. Refer to Using a Custom Component for more information.  | 
            
| itemRender | An alias for the itemTemplate property specified in React. Accepts a rendering function. Refer to Using a Rendering Function for more information.  | 
            
| items | Provides drop-down menu items.  | 
            
| itemTemplate | Specifies a custom template for drop-down menu items.  | 
            
| keyExpr | Specifies which data field provides keys used to distinguish between the selected drop-down menu items.  | 
            
| noDataText | Specifies text or HTML markup displayed in the drop-down menu when it does not contain any items.  | 
            
| onButtonClick | A function that is executed when the button is clicked or tapped. If splitButton is true, this function is executed for the action button only.  | 
            
| onContentReady | A function that is executed when the widget's content is ready and each time the content is changed.  | 
            
| onDisposing | A function that is executed before the widget is disposed of.  | 
            
| onInitialized | A function used in JavaScript frameworks to save the widget instance.  | 
            
| onItemClick | A function that is executed when a drop-down menu item is clicked.  | 
            
| onOptionChanged | A function that is executed after a widget option is changed.  | 
            
| onSelectionChanged | A function that is executed when an item is selected or selection is canceled. In effect when useSelectMode is true.  | 
            
| opened | Specifies whether the drop-down menu is opened.  | 
            
| rtlEnabled | Switches the widget to a right-to-left representation.  | 
            
| selectedItem | Contains the selected item's data. Available when useSelectMode is true.  | 
            
| selectedItemKey | Contains the selected item's key and allows you to specify the initially selected item. Applies when useSelectMode is true.  | 
            
| showArrowIcon | Specifies whether the arrow icon should be displayed.  | 
            
| splitButton | Specifies whether to split the button in two: one executes an action, the other opens and closes the drop-down menu.  | 
            
| stylingMode | Specifies how the button is styled.  | 
            
| tabIndex | Specifies the number of the element when the Tab key is used for navigating.  | 
            
| text | Specifies the button's text. Applies only if useSelectMode is false.  | 
            
| useSelectMode | Specifies whether the widget stores the selected drop-down menu item.  | 
            
| visible | Specifies whether the widget is visible.  | 
            
| width | Specifies the widget's width.  | 
            
| wrapItemText | Specifies whether text that exceeds the drop-down list width should be wrapped.  | 
            
See Also
- Configure a Widget: Angular | Vue | React | jQuery | AngularJS | Knockout | ASP.NET MVC 5 | ASP.NET Core
 
Methods
This section describes methods that control the DropDownButton widget.
| Name | Description | 
|---|---|
| beginUpdate() | Prevents the widget from refreshing until the endUpdate() method is called.  | 
            
| close() | Closes the drop-down menu.  | 
            
| defaultOptions(rule) | Specifies the device-dependent default configuration options for this component.  | 
            
| dispose() | Disposes of all the resources allocated to the DropDownButton instance.  | 
            
| element() | Gets the root widget element.  | 
            
| endUpdate() | Refreshes the widget after a call of the beginUpdate() method.  | 
            
| focus() | Sets focus on the widget.  | 
            
| getDataSource() | Gets the DataSource instance.  | 
            
| getInstance(element) | Gets the instance of a widget found using its DOM node.  | 
            
| instance() | Gets the widget's instance. Use it to access other methods of the widget.  | 
            
| off(eventName) | Detaches all event handlers from a single event.  | 
            
| off(eventName, eventHandler) | Detaches a particular event handler from a single event.  | 
            
| on(eventName, eventHandler) | Subscribes to an event.  | 
            
| on(events) | Subscribes to events.  | 
            
| open() | Opens the drop-down menu.  | 
            
| option() | Gets all widget options.  | 
            
| option(optionName) | Gets the value of a single option.  | 
            
| option(optionName, optionValue) | Updates the value of a single option.  | 
            
| option(options) | Updates the values of several options.  | 
            
| registerKeyHandler(key, handler) | Registers a handler to be executed when a user presses a specific key.  | 
            
| repaint() | Repaints the widget without reloading data. Call it to update the widget's markup.  | 
            
| resetOption(optionName) | Resets an option to its default value.  | 
            
| toggle() | Opens or closes the drop-down menu, reversing the current state.  | 
            
| toggle(visibility) | Opens or closes the drop-down menu, depending on the argument.  | 
            
See Also
- Call Methods: Angular | Vue | React | jQuery | AngularJS | Knockout | ASP.NET MVC 5 | ASP.NET Core
 
Events
This section describes events that the DropDownButton widget raises.
| Name | Description | 
|---|---|
| buttonClick | Raised when the button is clicked.  | 
            
| contentReady | Raised when the widget's content is ready.  | 
            
| disposing | Raised before the widget is disposed of.  | 
            
| initialized | Raised only once, after the widget is initialized.  | 
            
| itemClick | Raised when an item in the drop-down filed is clicked.  | 
            
| optionChanged | Raised after a widget option is changed.  | 
            
| selectionChanged | Raised when an item is selected or selection is canceled.  | 
            
See Also
- Handle Events: Angular | Vue | React | jQuery | AngularJS | Knockout | ASP.NET MVC 5 | ASP.NET Core
 
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