JavaScript/jQuery Lookup Events

Information about the event.

Object structure:

Name

Type

Description

component

The widget's instance.

element

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

model

The model data. Available only if Knockout is used.

Main article: onClosed

contentReady

Raised when the widget's content is ready.

Type:

Event

Function parameters:

e:

Information about the event.

Object structure:

Name

Type

Description

component

The widget's instance.

element

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

model

The model data. Available only when using Knockout.

Main article: onContentReady.

disposing

Raised before the widget is disposed of.

Type:

Event

Function parameters:

e:

Information about the event.

Object structure:

Name	Type	Description
component	Lookup	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

The widget instance.

element

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

model

The model data. Available only if you use Knockout.

Main article: onDisposing

initialized

Raised only once, after the widget is initialized.

Type:

Event

Function parameters:

e:

Information about the event.

Object structure:

Name

Type

Description

component

The widget's instance.

element

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

Main article: onInitialized

itemClick

Raised when a list item is clicked or tapped.

Type:

Event

Function parameters:

e:

Information about the event.

Object structure:

Name	Type	Description
component	Lookup	The widget's instance.
element	HTMLElement \| jQuery	The widget's container. It is an HTML Element or a jQuery Element when you use jQuery.
event	Event (jQuery or EventObject)	The event that caused the function to execute. It is a dxEvent or a jQuery.Event when you use jQuery.
itemData	Object	The clicked item's data.
itemElement	Object	The item's container.
itemIndex	Number \| Object	The clicked item's index. If the widget items are grouped, 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.

Main article: onItemClick

opened

Raised once the drop-down editor is opened.

Type:

Event

Function parameters:

e:

Information about the event.

Object structure:

Name

Type

Description

component

The widget's instance.

element

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

model

The model data. Available only if Knockout is used.

Main article: onOpened

optionChanged

Raised after a widget option is changed.

Type:

Event

Function parameters:

e:

Information about the event.

Object structure:

Name	Type	Description
model	Object	The model data. Available only if you use Knockout.
fullName	String	The path to the modified option that includes all parent options.
element	HTMLElement \| jQuery	The widget's container. It is an HTML Element or a jQuery Element when you use jQuery.
component	Lookup	The widget's instance.
name	String	The modified option if it belongs to the first level. Otherwise, the first-level option it is nested into.
value	any	The modified option's new value.

Main article: onOptionChanged

pageLoading

Raised before the next page is loaded.

Type:

Event

Function parameters:

e:

Information about the event.

Object structure:

Name

Type

Description

component

The widget's instance.

element

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

model

The model data. Available only if Knockout is used.

Main article: onPageLoading

pullRefresh

Raised when the "pull to refresh" gesture is performed on the drop-down item list.

Type:

Event

Function parameters:

e:

Information about the event.

Object structure:

Name

Type

Description

component

The widget's instance.

element

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

model

The model data. Available only if Knockout is used.

Main article: onPullRefresh

scroll

Raised on each scroll gesture performed on the drop-down item list.

Type:

Event

Function parameters:

e:

Information about the event.

Object structure:

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

Main article: onScroll

selectionChanged

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

Type:

Event

Function parameters:

e:

Information about the event.

Object structure:

Name	Type	Description
component	Lookup	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.
selectedItem	Object	The selected item's data.

Main article: onSelectionChanged

titleRendered

Raised when the drop-down list's title is rendered.

Type:

Event

Function parameters:

e:

Information about the event.

Object structure:

Name	Type	Description
component	Lookup	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.
titleElement	HTMLElement \| jQuery	The title's container. It is an HTML Element or a jQuery Element when you use jQuery.

Main article: onTitleRendered

valueChanged

Raised after the widget's value is changed.

Type:

Event

Function parameters:

e: