NavBar

The NavBar is a UI component that navigates the application views.

Included in: dx.web.js, dx.all.js
Module: ui/nav_bar
Export: default
NavBar interactive configuration
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import NavBar from "devextreme/ui/nav_bar";

new NavBar(container, {
});

                    
Type:

Object

Configuration

An object defining configuration properties for the NavBar UI component.

Name Description
accessKey

Specifies the shortcut key that sets focus on the UI component.

dataSource

Binds the UI component to data.

disabled

Specifies whether the UI component responds to user interaction.

elementAttr

Specifies the global attributes to be attached to the UI component's container element.

focusStateEnabled

Specifies whether the UI component can be focused using keyboard navigation.

height

Specifies the UI component's height.

hint

Specifies text for a hint that appears when a user pauses on the UI component.

hoverStateEnabled

Specifies whether the UI component changes its state when a user pauses on it.

itemComponent

An alias for the itemTemplate property specified in React. Accepts a custom component. Refer to Using a Custom Component for more information.

itemHoldTimeout

The time period in milliseconds before the onItemHold event is raised.

itemRender

An alias for the itemTemplate property specified in React. Accepts a rendering function. Refer to Using a Rendering Function for more information.

items

An array of items displayed by the UI component.

itemTemplate

Specifies a custom template for items.

keyExpr

Specifies the key property that provides key values to access data items. Each key value must be unique.

noDataText

The text or HTML markup displayed by the UI component if the item collection is empty.

onContentReady

A function that is executed when the UI component's content is ready and each time the content is changed.

onDisposing

A function that is executed before the UI component is disposed of.

onInitialized

A function used in JavaScript frameworks to save the UI component instance.

onItemClick

A function that is executed when a collection item is clicked or tapped.

onItemContextMenu

A function that is executed when a collection item is right-clicked or pressed.

onItemHold

A function that is executed when a collection item has been held for a specified period.

onItemRendered

A function that is executed after a collection item is rendered.

onOptionChanged

A function that is executed after a UI component property is changed.

onSelectionChanged

A function that is executed when a collection item is selected or selection is canceled.

repaintChangesOnly

Specifies whether to repaint only those elements whose data changed.

rtlEnabled

Switches the UI component to a right-to-left representation.

scrollByContent

Specifies whether or not an end-user can scroll tabs by swiping.

selectedIndex

The index of the currently selected UI component item.

selectedItem

The selected item object.

selectedItemKeys

Specifies an array of currently selected item keys.

selectedItems

An array of currently selected item objects.

selectionMode

Specifies whether the UI component enables an end-user to select only a single item or multiple items.

tabIndex

Specifies the number of the element when the Tab key is used for navigating.

visible

Specifies whether the UI component is visible.

width

Specifies the UI component's width.

See Also

Methods

This section describes members used to manipulate the UI component.

Name Description
beginUpdate()

Prevents the UI component from refreshing until the endUpdate() method is called.

defaultOptions(rule)

Specifies the device-dependent default configuration properties for this component.

dispose()

Disposes of all the resources allocated to the NavBar instance.

element()

Gets the root UI component element.

endUpdate()

Refreshes the UI component after a call of the beginUpdate() method.

focus()

Sets focus on the UI component.

getDataSource()

Gets the DataSource instance.

getInstance(element)

Gets the instance of a UI component found using its DOM node.

instance()

Gets the UI component's instance. Use it to access other methods of the UI component.

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.

option()

Gets all UI component properties.

option(optionName)

Gets the value of a single property.

option(optionName, optionValue)

Updates the value of a single property.

option(options)

Updates the values of several properties.

registerKeyHandler(key, handler)

Registers a handler to be executed when a user presses a specific key.

repaint()

Repaints the UI component without reloading data. Call it to update the UI component's markup.

resetOption(optionName)

Resets an property to its default value.

Events

This section describes events fired by this UI component.

Name Description
contentReady

Raised when the UI component's content is ready.

disposing

Raised before the UI component is disposed of.

initialized

Raised only once, after the UI component is initialized.

itemClick

Raised when a collection item is clicked or tapped.

itemContextMenu

Raised when a collection item is right-clicked or pressed.

itemHold

Raised when a collection item has been held for a specified period.

itemRendered

Raised after a collection item is rendered.

optionChanged

Raised after a UI component property is changed.

selectionChanged

Raised when a collection item is selected or selection is canceled.

See Also