Sets or gets whether the listbox's height is equal to the sum of each item's height

Code example

Set the autoHeight property.

$("#jqxListBox").jqxListBox({autoHeight:true}); 

Get the autoHeight property.

var autoHeight = $('#jqxListBox').jqxListBox('autoHeight'); 

Enables/disables the dragging of ListBox Items.

Code example

Set the allowDrag property.

$("#jqxListBox").jqxListBox({allowDrag:true}); 

Get the allowDrag property.

var allowDrag = $('#jqxListBox').jqxListBox('allowDrag'); 

Enables/disables the dropping of ListBox Items.

Code example

Set the allowDrop property.

$("#jqxListBox").jqxListBox({allowDrop:true}); 

Get the allowDrop property.

var allowDrop = $('#jqxListBox').jqxListBox('allowDrop'); 

Sets or gets whether the listbox should display a checkbox next to each item.

Code example

Set the checkboxes property.

$("#jqxListBox").jqxListBox({checkboxes:true}); 

Get the checkboxes property.

var checkboxes = $('#jqxListBox').jqxListBox('checkboxes'); 

Enables/disables the listbox.

Code example

Set the disabled property.

$('#jqxListBox').jqxListBox({ disabled: true }); 

Get the disabled property.

var disabled = $('#jqxListBox').jqxListBox('disabled');

Sets or gets the displayMember of the Items. The displayMember specifies the name of an object property to display. The name is contained in the collection specified by the 'source' property.

Code example

Set the displayMember property.

$("#jqxListBox").jqxListBox({displayMember: 'firstName'});

Get the displayMember property.

var displayMember = $('#jqxListBox').jqxListBox('displayMember'); 

Sets or gets the drop action when an item is dropped.

Possible Values:

'default'

'copy'-adds a clone of the dropped item

'none'-means that the dropped item will not be added to a new collection and will not be removed from its parent collection

Code example

Set the dropAction property.

$("#jqxListBox").jqxListBox({dropAction:'copy'}); 

Get the dropAction property.

var dropAction = $('#jqxListBox').jqxListBox('dropAction'); 

Callback function which is called when a drag operation starts.

Code example

Set the dragStart property

$("#jqxListBox").jqxListBox({dragStart: function (item)
{
    // disable dragging of 'Café au lait' item.
    if (item.label == 'Café au lait')
    return false;
                        
    // enable dragging for the item.
    return true;
}
});
                        

Get the dragStart property.

var dragStart = $('#jqxListBox').jqxListBox('dragStart'); 

Callback function which is called when a drag operation ends.

Code example

Set the dragEnd property

$("#jqxListBox").jqxListBox({ dragEnd: function (dragItem, dropItem) 
{
    // dragItem is the dragged Item.
    // dropItem is the item under the mouse cursor when you dropped the dragged item.
    if (dragItem.label == "Frappuccino")
    return false;
}
});
                        

Get the dragEnd property.

var dragEnd = $('#jqxListBox').jqxListBox('dragEnd'); 

Enables/disables the hover state.

Code example

Set the enableHover property.

$("#jqxListBox").jqxListBox({enableHover: false}); 

Get the enableHover property.

var enableHover = $('#jqxListBox').jqxListBox('enableHover'); 

Enables/disables the selection.

Code example

Set the enableSelection property.

$("#jqxListBox").jqxListBox({enableSelection: false}); 

Get the enableSelection property.

var enableSelection = $('#jqxListBox').jqxListBox('enableSelection'); 

Sets or gets whether the items width should be equal to the listbox's width.

Code example

Set the equalItemsWidth property.

$("#jqxListBox").jqxListBox({equalItemsWidth:false}); 

Get the equalItemsWidth property.

var equalItemsWidth = $('#jqxListBox').jqxListBox('equalItemsWidth'); 

Determines whether the Filtering is enabled.

Code example

Set the filterable property.

$("#jqxListBox").jqxListBox({filterable:true}); 

Get the filterable property.

var filterable = $('#jqxListBox').jqxListBox('filterable'); 

Determines the Filter's height.

Code example

Set the filterHeight property.

$("#jqxListBox").jqxListBox({filterHeight:30}); 

Get the filterHeight property.

var filterHeight = $('#jqxListBox').jqxListBox('filterHeight'); 

Determines the Filter's delay. After 100 milliseconds, the widget automatically filters its data based on the filter input's value. To perform filter only on "Enter" key press, set this property to 0.

Code example

Set the filterDelay property.

$("#jqxListBox").jqxListBox({filterDelay:300}); 

Get the filterDelay property.

var filterDelay = $('#jqxListBox').jqxListBox('filterDelay'); 

Determines the Filter input's place holder.

Code example

Set the filterPlaceHolder property.

$("#jqxListBox").jqxListBox({filterPlaceHolder:300}); 

Get the filterPlaceHolder property.

var filterPlaceHolder = $('#jqxListBox').jqxListBox('filterPlaceHolder'); 

Sets or gets the listbox's height.

Code example

Set the height property.

$("#jqxListBox").jqxListBox({ width: '250px', height: '250px' }); 

Get the height property.

var height = $('#jqxListBox').jqxListBox('height');

Sets or gets whether the checkboxes have three states - checked, unchecked and indeterminate.

Code example

Set the hasThreeStates property.

$("#jqxListBox").jqxListBox({hasThreeStates:true}); 

Get the hasThreeStates property.

var hasThreeStates = $('#jqxListBox').jqxListBox('hasThreeStates'); 

Sets or gets the height of the jqxListBox Items. When the itemHeight == - 1, each item's height is equal to its desired height.

Code example

Set the itemHeight property specified.

$("#jqxListBox").jqxListBox({itemHeight: 25});

Get the itemHeight property.

var itemHeight = $('#jqxListBox').jqxListBox('itemHeight'); 

Sets or gets the incrementalSearch property. An incremental search begins searching as soon as you type the first character of the search string. As you type in the search string, jqxListBox automatically selects the found item.

Code example

Set the incrementalSearch property.

$("#jqxListBox").jqxListBox({incrementalSearch: false});

Get the incrementalSearch property.

var incrementalSearch = $('#jqxListBox').jqxListBox('incrementalSearch'); 

Sets ot gets the incrementalSearchDelay property. The incrementalSearchDelay specifies the time-interval in milliseconds after which the previous search string is deleted. The timer starts when you stop typing.

Code example

Set the incrementalSearchDelay property.

$("#jqxListBox").jqxListBox({incrementalSearchDelay: 400});

Get the incrementalSearchDelay property.

var incrementalSearchDelay = $('#jqxListBox').jqxListBox('incrementalSearchDelay'); 

Enables/disables the multiple selection. When this property is set to true, the user can select multiple items.

Code example

Set the multiple property.

$("#jqxListBox").jqxListBox({multiple: true}); 

Get the multiple property.

var multiple = $('#jqxListBox').jqxListBox('multiple'); 

Enables/disables the multiple selection using Shift and Ctrl keys. When this property is set to true, the user can select multiple items by clicking on item and holding Shift or Ctrl.

Code example

Set the multipleextended property.

$("#jqxListBox").jqxListBox({multipleextended: true}); 

Get the multipleextended property.

var multipleextended = $('#jqxListBox').jqxListBox('multipleextended'); 

Callback function which is called when an item is rendered. By using the renderer function, you can customize the look of the list items.

Code example

Set the renderer property

$('#jqxListBox').jqxListBox({renderer: function (index, label, value) 
{
    var datarecord = data[index];
    return datarecord.firstname + " " + datarecord.lastname;
}
});
                        

Get the renderer property.

var renderer = $('#jqxListBox').jqxListBox('renderer'); 

Sets or gets a value indicating whether widget's elements are aligned to support locales using right-to-left fonts.

Code example

Set the rtl property.

$('#jqxListBox').jqxListBox({rtl : true}); 

Get the rtl property.

var rtl = $('#jqxListBox').jqxListBox('rtl'); 

Sets or gets the selected index.

Code example

Set the selectedIndex propert.

$("#jqxListBox").jqxListBox({selectedIndex: 2 }); 

Get the selectedIndex property.

var selectedIndex = $('#jqxListBox').jqxListBox('selectedIndex'); 

Sets or gets the item's source.

Code example

Set the source property.

var data = [

"Affogato",

"Americano",

"Bicerin"

];

$("#jqxListBox").jqxListBox({source: data});

// url of the data.
var url = "../sampledata/customers.txt";
var parentsLength = $("#jqxWidget").parents().length;
if (parentsLength > 3) {
    url = 'demos/sampledata/customers.txt';
}
// prepare the data. Set the datatype to 'json', 'xml', 'tsv', 'array', 'local' or 'csv.
var source =
{
    datatype: "json",
    datafields: [
        { name: 'CompanyName' },
        { name: 'ContactName' }
    ],
    id: 'id',
    url: url
};
// create a new instance of the jqx.dataAdapter.
var dataAdapter = new $.jqx.dataAdapter(source);
// Create a jqxListBox
$("#jqxListBox").jqxListBox({ source: dataAdapter, displayMember: "ContactName", valueMember: "CompanyName", width: 200, height: 250});

Get the source property.

var source = $('#jqxListBox').jqxListBox('source'); 

Sets or gets the scrollbars's size.

Code example

Set the scrollBarSize property.

$("#jqxListBox").jqxListBox({scrollBarSize: 25});

Get the scrollBarSize property.

var scrollBarSize = $('#jqxListBox').jqxListBox('scrollBarSize'); 

Sets or gets the item incremental search mode. When the user types some text in a focused ListBox, the jqxListBox widget tries to find the searched item using the entered text and the selected search mode.

Possible Values:

'none'

'contains'

'containsignorecase'

'equals'

'equalsignorecase'

'startswithignorecase'

'startswith'

'endswithignorecase'

'endswith'

Code example

Set the searchMode property.

$("#jqxListBox").jqxListBox({searchMode: 'contains' }); 

Get the searchMode property.

var searchMode = $('#jqxListBox').jqxListBox('searchMode'); 

Sets the widget's theme.

• Include the theme's CSS file after jqx.base.css.
  The following code example adds the 'material' theme.

  
  <link rel="stylesheet" href="../../jqwidgets/styles/jqx.base.css" type="text/css" />
  <link rel="stylesheet" href="../../jqwidgets/styles/jqx.material.css" type="text/css" />
  
  

• Set the widget's theme property to 'material' when you initialize it.

Sets or gets the valueMember of the Items. The valueMember specifies the name of an object property to set as a 'value' of the list items. The name is contained in the collection specified by the 'source' property.

Code example

Set the valueMember property.

$("#jqxListBox").jqxListBox({valueMember: 'lastName'});

Get the valueMember property.

var valueMember = $('#jqxListBox').jqxListBox('valueMember'); 

Sets or gets the listbox's width.

Code example

Set the width property.

$("#jqxListBox").jqxListBox({ width: '250px', height: '250px' }); 

Get the width property.

var width = $('#jqxListBox').jqxListBox('width');

This event is triggered when the data binding operation is completed.

Code example

Bind to the bindingComplete event by type: jqxListBox.

This event is triggered when the user selects an item.

Code example

Bind to the change by type: jqxListBox.

• label - gets item's label.
• value - gets the item's value.
• disabled - gets whether the item is enabled/disabled.
• checked - gets whether the item is checked/unchecked.
• hasThreeStates - determines whether the item's checkbox supports three states.
• html - gets the item's display html. This can be used instead of label.
• index - gets the item's index.
• group - gets the item's group.

This event is triggered when the user checks or unchecks an item.

Code example

Bind to the checkChange event by type: jqxListBox.

• label - gets item's label.
• value - gets the item's value.
• disabled - gets whether the item is enabled/disabled.
• checked - gets whether the item is checked/unchecked.
• hasThreeStates - determines whether the item's checkbox supports three states.
• html - gets the item's display html. This can be used instead of label.
• index - gets the item's index.
• group - gets the item's group.

This event is triggered when the user starts a drag operation.

Code example

Bind to the dragStart event by type: jqxListBox.

This event is triggered when the user drops an item.

Code example

Bind to the dragdragEndnd event by type: jqxListBox.

This event is triggered when the user selects an item.

Code example

Bind to the select event by type: jqxListBox.

• label - gets item's label.
• value - gets the item's value.
• disabled - gets whether the item is enabled/disabled.
• checked - gets whether the item is checked/unchecked.
• hasThreeStates - determines whether the item's checkbox supports three states.
• html - gets the item's display html. This can be used instead of label.
• index - gets the item's index.
• group - gets the item's group.

This event is triggered when the user unselects an item.

Code example

Bind to the unselect event by type: jqxListBox.

• label - gets item's label.
• value - gets the item's value.
• disabled - gets whether the item is enabled/disabled.
• checked - gets whether the item is checked/unchecked.
• hasThreeStates - determines whether the item's checkbox supports three states.
• html - gets the item's display html. This can be used instead of label.
• index - gets the item's index.
• group - gets the item's group.

Adds a new item to the jqxListBox. Returns 'true', if the new item is added or 'false' if the item is not added.

• label - determines the item's label.
• value - determines the item's value.
• disabled - determines whether the item is enabled/disabled.
• checked - determines whether item is checked/unchecked.
• hasThreeStates - determines whether the item's checkbox supports three states.
• html - determines the item's display html. This can be used instead of label.
• group - determines the item's group.

Code example

Invoke the addItem method.

// @param string

$("#jqxListBox").jqxListBox('addItem', 'jQuery' ); 

Code example 2

Invoke the addItem method.

// @param object

$("#jqxListBox").jqxListBox('addItem', { label: 'Text' value: 'Id'} ); 

Stops the ListBox's rendering. That method is usually used when multiple items need to be inserted or removed dynamically.

Code example

Invoke the beginUpdate method.

$("#jqxListBox").jqxListBox('beginUpdate'); 

Clears all items.

Code example

Invoke the clear method.

$("#jqxListBox").jqxListBox('clear'); 

Clears all selected items.

Code example

Invoke the clearSelection method.

$("#jqxListBox").jqxListBox('clearSelection'); 

Checks a list item when the 'checkboxes' property value is true. The index is zero-based, i.e to check the first item, the 'checkIndex' method should be called with parameter 0.

Code example

Invoke the checkIndex method.

$("#jqxListBox").jqxListBox('checkIndex', 0); 

Checks an item.

Code example

Invoke the checkItem method.

// @param jqxListBox Item

$("#jqxListBox").jqxListBox('checkItem', item ); 

Checks all list items when the 'checkboxes' property value is true.

Code example

Invoke the checkAll method.

$("#jqxListBox").jqxListBox('checkAll'); 

Clears the widget's filter when filtering is applied.

Destroy the jqxListBox widget. The destroy method removes the jqxListBox widget from the web page.

Code example

Invoke the destroy method.

$('#jqxListBox').jqxListBox('destroy');
                        

Disables an item. Item is an object.

• label - determines the item's label.
• value - determines the item's value.
• disabled - determines whether the item is enabled/disabled.
• checked - determines whether item is checked/unchecked.
• hasThreeStates - determines whether the item's checkbox supports three states.
• html - determines the item's display html. This can be used instead of label.
• group - determines the item's group.

Code example

Invoke the disableItem method.

// @param number

$("#jqxListBox").jqxListBox('disableItem', "jQuery" ); 

Disables an item by index. Index is a number.

Code example

Invoke the disableAt method.

// @param number

$("#jqxListBox").jqxListBox('disableAt', 8 ); 

Enables an item. Item is an object.

• label - determines the item's label.
• value - determines the item's value.
• disabled - determines whether the item is enabled/disabled.
• checked - determines whether item is checked/unchecked.
• hasThreeStates - determines whether the item's checkbox supports three states.
• html - determines the item's display html. This can be used instead of label.
• group - determines the item's group.

Code example

Invoke the enableItem method.

// @param number

$("#jqxListBox").jqxListBox('enableItem', "jQuery" ); 

Enables a disabled item by index. Index is a number.

Code example

Invoke the enableAt method.

// @param number

$("#jqxListBox").jqxListBox('enableAt', 3 ); 

Ensures that an item is visible. Index is number. If necessary scrolls to the item. Insted of Index, you can also pass the item's value.

Code example

Invoke the ensureVisible method.

// @param number

// @optional param boolean - determines whether to make the item to be the top visible item in the list

$("#jqxListBox").jqxListBox('ensureVisible', 2 ); 

$("#jqxListBox").jqxListBox('ensureVisible', "Iced Coffee" ); 

Starts the ListBox's rendering and refreshes the ListBox. That method is usually used in combination with the 'beginUpdate' method when multiple items need to be inserted or removed dynamically.

Code example

Invoke the endUpdate method.

$("#jqxListBox").jqxListBox('endUpdate'); 

Sets the focus to the jqxListBox.

Code example

Invoke the focus method.

$("#jqxListBox").jqxListBox('focus'); 

Gets all items. The returned value is an array of Items.

• label - gets item's label.
• value - gets the item's value.
• disabled - gets whether the item is enabled/disabled.
• checked - gets whether the item is checked/unchecked.
• hasThreeStates - determines whether the item's checkbox supports three states.
• html - gets the item's display html. This can be used instead of label.
• index - gets the item's index.
• group - gets the item's group.

Code example

Invoke the getItems method.

var items = $("#jqxListBox").jqxListBox('getItems'); 

var items = $("#jqxListBox").jqxListBox('getItems'); var firstItem = items[0]; 

Gets the selected ListBox items. The returned value is an Array of items.

• label - gets item's label.
• value - gets the item's value.
• disabled - gets whether the item is enabled/disabled.
• checked - gets whether the item is checked/unchecked.
• hasThreeStates - determines whether the item's checkbox supports three states.
• html - gets the item's display html. This can be used instead of label.
• index - gets the item's index.
• group - gets the item's group.

Code example

Invoke the getSelectedItems method.

var items = $("#jqxListBox").jqxListBox('getSelectedItems'); 

Gets the checked ListBox items. Returns an Array of checked items.

• label - gets item's label.
• value - gets the item's value.
• disabled - gets whether the item is enabled/disabled.
• checked - gets whether the item is checked/unchecked.
• hasThreeStates - determines whether the item's checkbox supports three states.
• html - gets the item's display html. This can be used instead of label.
• index - gets the item's index.
• group - gets the item's group.

Code example

Invoke the getCheckedItems method.

var items = $("#jqxListBox").jqxListBox('getCheckedItems'); 

Gets an item by index. The returned value is an object with the following fields:

• label - gets item's label.
• value - gets the item's value.
• disabled - gets whether the item is enabled/disabled.
• checked - gets whether the item is checked/unchecked.
• hasThreeStates - determines whether the item's checkbox supports three states.
• html - gets the item's display html. This can be used instead of label.
• index - gets the item's index.
• group - gets the item's group.

Code example

Invoke the getItem method.

// @param number

var item = $("#jqxListBox").jqxListBox('getItem', 1 ); 

Gets an item by its value. The returned value is an object with the following fields:

• label - gets item's label.
• value - gets the item's value.
• disabled - gets whether the item is enabled/disabled.
• checked - gets whether the item is checked/unchecked.
• hasThreeStates - determines whether the item's checkbox supports three states.
• html - gets the item's display html. This can be used instead of label.
• index - gets the item's index.
• group - gets the item's group.

Code example

Invoke the getItemByValue method.

// @param Value

var item = $("#jqxWidget").jqxListBox('getItemByValue', "Bon app'");

Gets the selected item. The returned value is an object or null(if there is no selected item).

• label - gets item's label.
• value - gets the item's value.
• disabled - gets whether the item is enabled/disabled.
• checked - gets whether the item is checked/unchecked.
• hasThreeStates - determines whether the item's checkbox supports three states.
• html - gets the item's display html. This can be used instead of label.
• index - gets the item's index.
• group - gets the item's group.

Code example

Invoke the getSelectedItem method.

// @param number

var item = $("#jqxListBox").jqxListBox('getSelectedItem'); 

Gets the index of the selected item. The returned value is the index of the selected item. If there's no selected item, -1 is returned.

Code example

Invoke the getSelectedIndex method.

// @param number

var index = $("#jqxListBox").jqxListBox('getSelectedIndex'); 

Inserts a new item to the jqxListBox. Returns 'true', if the new item is inserted or false if the insertaion fails. The first parameter is object or string - the new item. The second parameter is number - the item's index.

• label - determines the item's label.
• value - determines the item's value.
• disabled - determines whether the item is enabled/disabled.
• checked - determines whether item is checked/unchecked.
• hasThreeStates - determines whether the item's checkbox supports three states.
• html - determines the item's display html. This can be used instead of label.
• group - determines the item's group.

Code example

Invoke the insertAt method.

// @param string

// @param number

$("#jqxListBox").jqxListBox('insertAt', 'jQuery', 1 ); 

Code example 2

Invoke the insertAt method.

// @param object

// @param number

$("#jqxListBox").jqxListBox('insertAt', '{ label: 'Text' value: 'Id'}, 1 ); 

The invalidate method will repaint the jqxListBox's items.

Code example

Invoke the invalidate method.

$('#jqxListBox').jqxListBox('invalidate');
                        

Indeterminates an item.

Code example

Invoke the indeterminateItem method.

// @param jqxListBox Item

$("#jqxListBox").jqxListBox('indeterminateItem', item ); 

indeterminates a list item when the 'checkboxes' property value is true. The index is zero-based, i.e to indeterminate the first item, the 'indeterminateIndex' method should be called with parameter 0.

Code example

Invoke the indeterminateIndex method.

$("#jqxListBox").jqxListBox('indeterminateIndex', 0); 

Removes an item from the listbox. Parameter type: object returned by the "getItem" method or string - the value of an item. Returns 'true', if the item is removed or 'false', if the item is not removed.

Code example

Invoke the removeItem method.

// @param object

$("#jqxListBox").jqxListBox('removeItem', "List Item" ); 

Removes an item from the listbox. Parameter type: number - the index of the item. The method returns 'true', if the item is removed or 'false', if the item is not removed.

Code example

Invoke the removeAt method.

// @param number

$("#jqxListBox").jqxListBox('removeAt', 3 ); 

Renders the jqxListBox widget.

Code example

Invoke the render method.

$('#jqxListBox').jqxListBox('render');
                        

Refreshes the jqxListBox widget. The refresh method will update the jqxListBox's layout, size and data.

Code example

Invoke the refresh method.

$('#jqxListBox').jqxListBox('refresh');
                        

Selects an item.

Code example

Invoke the selectItem method.

// @param jqxListBox Item

$("#jqxListBox").jqxListBox('selectItem', item ); 

Selects item. Index is number. The index is zero-based, i.e to select the first item, the 'selectIndex' method should be called with parameter 0.

Code example

Invoke the selectIndex method.

// @param number

$("#jqxListBox").jqxListBox('selectIndex', 0 ); 

Updates an item. The first parameter is the new item. The second parameter could be an existing item or the value of an existing item.

• label - determines the item's label.
• value - determines the item's value.
• disabled - determines whether the item is enabled/disabled.
• checked - determines whether item is checked/unchecked.
• hasThreeStates - determines whether the item's checkbox supports three states.
• html - determines the item's display html. This can be used instead of label.
• group - determines the item's group.

Code example

Invoke the updateItem method.

// @param object

// @param object

$("#jqxListBox").jqxListBox('updateItem', { label: "Text", value: "Id1" }, "Antonio Moreno Taquera");

Updates an item. The first parameter is the new item. The second parameter is the index of the item to be updated.

• label - determines the item's label.
• value - determines the item's value.
• disabled - determines whether the item is enabled/disabled.
• checked - determines whether item is checked/unchecked.
• hasThreeStates - determines whether the item's checkbox supports three states.
• html - determines the item's display html. This can be used instead of label.
• group - determines the item's group.

Code example

Invoke the updateAt method.

// @param number

$("#jqxListBox").jqxListBox('updateAt', { label: "Text", value: "Id1" }, 3 );

Unselects item by index. The index is zero-based, i.e to select the first item, the 'unselectIndex' method should be called with parameter 0.

Code example

Invoke the unselectIndex method.

// @param number

$("#jqxListBox").jqxListBox('unselectIndex', 5 ); 

Unselects an item.

Code example

Invoke the unselectItem method.

// @param jqxListBox Item

$("#jqxListBox").jqxListBox('unselectItem', item ); 

Unchecks a list item when the 'checkboxes' property value is true. The index is zero-based, i.e to uncheck the first item, the 'uncheckIndex' method should be called with parameter 0.

Code example

Invoke the uncheckIndex method.

$("#jqxListBox").jqxListBox('uncheckIndex', 0); 

Unchecks an item.

Code example

Invoke the uncheckItem method.

// @param jqxListBox Item

$("#jqxListBox").jqxListBox('uncheckItem', item ); 

Unchecks all list items when the 'checkboxes' property value is true.

Code example

Invoke the uncheckAll method.

$("#jqxListBox").jqxListBox('uncheckAll'); 

Sets or gets the selected value.

Code example

Invoke the val method.

var value = $("#jqxListBox").jqxListBox('val');

var value = $("#jqxListBox").val();

$("#jqxListBox").jqxListBox('val', 'New Value');

$("#jqxListBox").val('New Value');