JavaScript/jQuery List Events

This section describes events fired by this widget.

contentReady

Raised when the widget's content is ready.

Type:

Event

Function parameters:

e:

Object

Information about the event.

Object structure:

Name

Type

Description

component

Object

The widget's instance.

element

HTMLElement | jQuery

The widget's container. It is an HTML Element or a jQuery Element when you use jQuery.

model

Object

The model data. Available only when using Knockout.

Main article: onContentReady.

disposing

Raised when the widget is removed from the DOM using the remove(), empty(), or html() jQuery methods only.

Type:

Event

Function parameters:

e:

Object

Information about the event.

Object structure:

Name	Type	Description
component	Object	The widget instance.
element	HTMLElement \| jQuery	The widget's container. It is an HTML Element or a jQuery Element when you use jQuery.
model	Object	The model data. Available only if you use Knockout.

Name

Type

Description

component

Object

The widget instance.

element

HTMLElement | jQuery

The widget's container. It is an HTML Element or a jQuery Element when you use jQuery.

model

Object

The model data. Available only if you use Knockout.

groupRendered

Fires after an item group element is rendered.

Type:

Event

Function parameters:

e:

Object

Information about the event.

Object structure:

Name	Type	Description
component	Object	The widget's instance.
element	HTMLElement \| jQuery	The widget's container. It is an HTML Element or a jQuery Element when you use jQuery.
model	Object	The model data. Available only if Knockout is used.
groupData	Object	The current group's data.
groupElement	HTMLElement \| jQuery	The group's container. It is an HTML Element or a jQuery Element when you use jQuery.
groupIndex	Number	The group's index.

Instead, you can use the onGroupRendered option to handle the event.

initialized

Raised only once, after the widget is initialized.

Type:

Event

Function parameters:

e:

Object

Information about the event.

Object structure:

Name

Type

Description

component

Object

The widget's instance.

element

HTMLElement | jQuery

The widget's container. It is an HTML Element or a jQuery Element when you use jQuery.

Main article: onInitialized

itemClick

Fires when a list item is clicked.

Type:

Event

Function parameters:

e:

Object

Information about the event.

Object structure:

Name	Type	Description
component	Object	The widget's instance.
element	HTMLElement \| jQuery	The widget's container. It is an HTML Element or a jQuery Element when you use jQuery.
model	Object	The model data. Available only if Knockout is used.
itemData	Object	The data that is bound to the clicked item.
itemElement	HTMLElement \| jQuery	The item's container. It is an HTML Element or a jQuery Element when you use jQuery.
itemIndex	Number \| Object	The clicked item's index. In a grouped list, the index represents an object defining group and item indexes: { group: 0, item: 0 }.

Instead, you can use the onItemClick option to handle the event.

NOTE

This event fires only if the selectionMode option is set to 'none'.

itemContextMenu

Fires when the right mouse button is clicked when the pointer is over a widget item, or when the "sustained" (also known as a long press) touch action is performed.

Type:

Event

Function parameters:

e:

Object

Information about the event.

Object structure:

Name	Type	Description
itemIndex	Number \| Object	The index of the item for which the context menu is displayed. In a grouped list, the index is specified as an object defining group and item indexes: { group: 0, item: 0 }.
model	Object	The model data. Available only if Knockout is used.
element	HTMLElement \| jQuery	The widget's container. It is an HTML Element or a jQuery Element when you use jQuery.
component	Object	The widget's instance.

Instead, you can use the onItemContextMenu option to handle the event.

itemDeleted

Fires when a widget item is deleted.

Type:

Event

Function parameters:

e:

Object

Information about the event.

Object structure:

Name	Type	Description
component	Object	The widget's instance.
element	HTMLElement \| jQuery	The widget's container. It is an HTML Element or a jQuery Element when you use jQuery.
model	Object	The model data. Available only if Knockout is used.
itemData	Object	The removed item's data.
itemElement	HTMLElement \| jQuery	The item's container. It is an HTML Element or a jQuery Element when you use jQuery.
itemIndex	Number \| Object	The removed item's index. In a grouped list, the index represents an object defining the group and item indexes: { group: 0, item: 0 }.

Instead, you can use the onItemDeleted option to handle the event.

Note that the itemDeleted event is raised only if an item is deleted using the appropriate method of the widget or end-user interaction. If you delete an item from an observable array passed to the dataSource or items option, the widget entirely reloads the items array without raising the itemDeleted and itemDeleting events.

itemDeleting

Raised before an item is deleted from the data source.

Type:

Event

Function parameters:

e:

Object

Information about the event.

Object structure:

Name	Type	Description
cancel	Boolean \| Promise<void> (jQuery or native)	Allows you to cancel the item deletion.
itemIndex	Number \| Object	The item's index. In a grouped list, the index represents an object defining group and item indexes: { group: 0, item: 0 }.
itemElement	HTMLElement \| jQuery	The item's container. It is an HTML Element or a jQuery Element when you use jQuery.
itemData	Object	The data of the item to be removed.
model	Object	The model data. Available only if you use Knockout.
element	HTMLElement \| jQuery	The widget's container. It is an HTML Element or a jQuery Element when you use jQuery.
component	Object	The widget's instance.

Main article: onItemDeleting

itemHold

Fires when the widget's collection item is being held for the time period specified by the itemHoldTimeout option.

Type:

Event

Function parameters:

e:

Object

Information about the event.

Object structure:

Name	Type	Description
itemIndex	Number \| Object	The index of the item being held. In a grouped list, the index represents an object defining the group and item indexes: { group: 0, item: 0 }.
model	Object	The model data. Available only if Knockout is used.
element	HTMLElement \| jQuery	The widget's container. It is an HTML Element or a jQuery Element when you use jQuery.
component	Object	The widget's instance.

Instead, you can use the onItemHold option to handle the event.

itemRendered

Fires after a collection item is rendered.

Type:

Event

Function parameters:

e:

Object

Information about the event.

Object structure:

Name	Type	Description
component	Object	The widget's instance.
element	HTMLElement \| jQuery	The widget's container. It is an HTML Element or a jQuery Element when you use jQuery.
model	Object	The model data. Available only if you use Knockout.
itemData	Object	The current item's data.
itemElement	HTMLElement \| jQuery	The item's container. It is an HTML Element or a jQuery Element when you use jQuery.
itemIndex	Number	The current item's index.

Instead, you can use the onItemRendered option to handle the event.

itemReordered

Fires when a list item is moved to another position.

Type:

Event

Function parameters:

e:

Object

Information about the event.

Object structure:

Name	Type	Description
component	Object	The widget's instance.
element	HTMLElement \| jQuery	The widget's container. It is an HTML Element or a jQuery Element when you use jQuery.
model	Object	The model data. Available only if Knockout is used.
itemData	Object	The reordered item's data.
itemElement	HTMLElement \| jQuery	The item's container. It is an HTML Element or a jQuery Element when you use jQuery.
itemIndex	Number \| Object	The item's index after reordering. This field holds the same value as toIndex. In a grouped list, the index represents an object defining the group and item indexes: { group: 0, item: 0 }.
fromIndex	Number	The item's previous index. In a grouped list, the index represents an object defining the group and item indexes: { group: 0, item: 0 }.
toIndex	Number	The item's current index. In a grouped list, the index represents an object defining the group and item indexes: { group: 0, item: 0 }.

Instead, you can use the onItemReordered option to handle the event.

To enable item reordering, set the allowItemReordering option to true.

NOTE

If a user drags an item and drops it at the same location, the event does not fire.

itemSwipe

Fires when an item is swiped.

Type:

Event

Function parameters:

e:

Object

Information about the event.

Object structure:

Name	Type	Description
component	Object	The widget's instance.
element	HTMLElement \| jQuery	The widget's container. It is an HTML Element or a jQuery Element when you use jQuery.
model	Object	The model data. Available only if Knockout is used.
jQueryEvent	jQuery.Event	Use 'event' instead. The jQuery event that caused the handler execution. Deprecated in favor of the event field.
event	Event (jQuery or EventObject)	The event that caused the handler execution. It is a dxEvent or a jQuery.Event when you use jQuery.
itemData	Object	The swiped item's data.
itemElement	HTMLElement \| jQuery	The item's container. It is an HTML Element or a jQuery Element when you use jQuery.
itemIndex	Number \| Object	The item's index. In a grouped list, the index represents an object defining the group and item indexes: { group: 0, item: 0 }.
direction	String	The direction in which the item is swiped.

Instead, you can use the onItemSwipe option to handle the event.

optionChanged

Raised after a widget option is changed.

Type:

Event

Function parameters:

e:

Object

Information about the event.

Object structure:

Name	Type	Description
name	String	The option's short name.
model	Object	The model data. Available only if you use Knockout.
element	HTMLElement \| jQuery	The widget's container. It is an HTML Element or a jQuery Element when you use jQuery.
component	Object	The widget's instance.
fullName	String	The option's full name.
value	any	The option's new value.

pageLoading

Fires before loading the next page when autopaging is enabled.

Type:

Event

Function parameters:

e:

Object

Information about the event.

Object structure:

Name

Type

Description

component

Object

The widget's instance.

element

HTMLElement | jQuery

The widget's container. It is an HTML Element or a jQuery Element when you use jQuery.

model

Object

The model data. Available only if Knockout is used.

Instead, you can use the onPageLoading option to handle the event.

pullRefresh

Fires before the list is refreshed as a result of the "pull down to refresh" gesture.

Type:

Event

Function parameters:

e:

Object

Information about the event.

Object structure:

Name

Type

Description

component

Object

The widget's instance.

element

HTMLElement | jQuery

The widget's container. It is an HTML Element or a jQuery Element when you use jQuery.

model

Object

The model data. Available only if Knockout is used.

Instead, you can use the onPullRefresh option to handle the event.

NOTE

The "pull down to refresh" gesture is not supported by desktop browsers and Windows Phone devices. You can use it only in mobile themes except the Windows Phone theme.

scroll

Fires on each scroll gesture.

Type:

Event

Function parameters:

e:

Object

Information about the event.

Object structure:

Name	Type	Description
component	Object	The widget's instance.
element	HTMLElement \| jQuery	The widget's container. It is an HTML Element or a jQuery Element when you use jQuery.
model	Object	The model data. Available only if Knockout is used.
jQueryEvent	jQuery.Event	Use 'event' instead. The jQuery event that caused the handler execution. Deprecated in favor of the event field.
event	Event (jQuery or EventObject)	The event that caused the handler execution. It is a dxEvent or a jQuery.Event when you use jQuery.
scrollOffset	Object	The current scroll offset in the following format { top: topOffset, left: leftOffset }.
reachedLeft	Boolean	Indicates whether the container's left boundary is reached.
reachedRight	Boolean	Indicates whether the container's right boundary is reached.
reachedTop	Boolean	Indicates whether the container's top boundary is reached.
reachedBottom	Boolean	Indicates whether the container's bottom boundary is reached.

Instead, you can use the onScroll option to handle the event.

selectAllValueChanged

Fires when the select all check box value changes.

Type:

Event

Function parameters:

e:

Object

Information about the event.

Object structure:

Name	Type	Description
component	Object	The widget's instance.
element	HTMLElement \| jQuery	The widget's container. It is an HTML Element or a jQuery Element when you use jQuery.
model	Object	The model data. Available only if Knockout is used.
value	Boolean	The "Select All" check box's state.

Instead, you can use the onSelectAllValueChanged option to handle the event.

NOTE

This event fires only if the selectionMode option is set to 'all'.

selectionChanged

Fires after a collection item is selected or unselected.

Type:

Event

Function parameters:

e:

Object

Information about the event.

Object structure:

Name	Type	Description
component	Object	The widget's instance.
element	HTMLElement \| jQuery	The widget's container. It is an HTML Element or a jQuery Element when you use jQuery.
model	Object	The model data. Available only if you use Knockout.
addedItems	Array<any>	The data of the items that have been selected.
removedItems	Array<any>	The data of the items whose selection has been canceled.

Main article: onSelectionChanged

JavaScript/jQuery List Events

See Also

contentReady

See Also

disposing

See Also

groupRendered

See Also

initialized

See Also

itemClick

See Also

itemContextMenu

See Also

itemDeleted

See Also

itemDeleting

See Also

itemHold

See Also

itemRendered

See Also

itemReordered

See Also

itemSwipe

See Also

optionChanged

See Also

pageLoading

See Also

pullRefresh

See Also

scroll

See Also

selectAllValueChanged

See Also

selectionChanged

See Also