Autocomplete

The Autocomplete widget is a textbox that provides suggestions while a user types into it.

Included in: dx.mobile.js, dx.web.js, dx.viz-web.js, dx.all.js
Module: ui/autocomplete
Export: default
Autocomplete interactive configuration
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$("#autocomplete").dxAutocomplete({
});

                    

DevExtreme widgets are integrated with many popular libraries and frameworks. See the Installation section (for JavaScript libraries) or the Prerequisites and Installation section (for ASP.NET MVC framework) to find details on setting up DevExtreme with a particular library or framework.

The following code shows how to create the Autocomplete widget using every supported library and framework. For more details on working with widgets in these libraries and frameworks, see the Widget Basics topic for jQuery, Angular, AngularJS, Knockout or ASP.NET MVC.

jQuery
JavaScript
HTML
$(function () {
    $("#autocomplete").dxAutocomplete({
        dataSource: [ "Item 1", "Item 2", "Item 3" ],
        placeholder: 'Type item name...'
    });
});
<div id="autocomplete"></div>
Angular
HTML
TypeScript
<dx-autocomplete
    [dataSource]="autocompleteData"
    placeholder="Type item name...">
</dx-autocomplete>
import { DxAutocompleteModule } from 'devextreme-angular';
// ...
export class AppComponent {
    autocompleteData = [ "Item 1", "Item 2", "Item 3" ];
}
@NgModule({
    imports: [
        // ...
        DxAutocompleteModule
    ],
    // ...
})
AngularJS
HTML
JavaScript
<div ng-controller="DemoController">
    <div dx-autocomplete="{
        dataSource: autocompleteData,
        placeholder: 'Type item name...'
    }"></div>
</div>
angular.module('DemoApp', ['dx'])
    .controller('DemoController', function ($scope) {
        $scope.autocompleteData = [ "Item 1", "Item 2", "Item 3" ];
    });
Knockout
HTML
JavaScript
<div data-bind="dxAutocomplete: {
    dataSource: autocompleteData,
    placeholder: 'Type item name...'
}"></div>
var viewModel = {
    autocompleteData: [ "Item 1", "Item 2", "Item 3" ]
};

ko.applyBindings(viewModel);
ASP.NET MVC Controls
Razor C#
Razor VB
@(Html.DevExtreme().Autocomplete()
    .ID("autocomplete")
    .DataSource(new[] { "Item 1", "Item 2", "Item 3" })
    .Placeholder("Type item name...")
)
@(Html.DevExtreme().Autocomplete() _
    .ID("autocomplete") _
    .DataSource({ "Item 1", "Item 2", "Item 3" }) _
    .Placeholder("Type item name...")
)

View Demo

See Also

Configuration

An object defining configuration options for the Autocomplete widget.

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

A data source used to fetch data the widget should display.

deferRendering

Specifies whether widget content is rendered when the widget is shown or when rendering the widget.

disabled

Specifies whether the widget responds to user interaction.

displayValue

Returns the value currently displayed by the widget.

dropDownButtonTemplate

Specifies a custom template for the drop-down button.

elementAttr

Specifies the attributes to be attached to the widget's root element.

focusStateEnabled

Specifies whether the widget can be focused using keyboard navigation.

grouped

Specifies whether data items should be grouped.

groupTemplate

Specifies a custom template for group captions.

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 pauses on it.

inputAttr

Specifies the attributes to be passed on to the underlying HTML element.

isValid

Specifies whether the editor's value is valid.

items

An array of items displayed by the widget.

itemTemplate

Specifies a custom template for items.

maxItemCount

Specifies the maximum count of items displayed by the widget.

maxLength

Specifies the maximum number of characters you can enter into the textbox.

minSearchLength

The minimum number of characters that must be entered into the text box to begin a search.

name

The value to be assigned to the name attribute of the underlying HTML element.

onChange

A handler for the change event.

onClosed

A handler for the closed event.

onContentReady

A handler for the contentReady event. Executed when the widget's content is ready. This handler may be executed multiple times during the widget's lifetime depending on the number of times its content changes.

onCopy

A handler for the copy event.

onCut

A handler for the cut event.

onDisposing

A handler for the disposing event. Executed when the widget is removed from the DOM using the remove(), empty(), or html() jQuery methods only.

onEnterKey

A handler for the enterKey event.

onFocusIn

A handler for the focusIn event.

onFocusOut

A handler for the focusOut event.

onInitialized

A handler for the initialized event. Executed only once, after the widget is initialized.

onInput

A handler for the input event.

onItemClick

A handler for the itemClick event.

onKeyDown

A handler for the keyDown event.

onKeyPress

A handler for the keyPress event.

onKeyUp

A handler for the keyUp event.

onOpened

A handler for the opened event.

onOptionChanged

A handler for the optionChanged event. Executed after an option of the widget is changed.

onPaste

A handler for the paste event.

onSelectionChanged

A handler for the selectionChanged event.

onValueChanged

A handler for the valueChanged event.

opened

Specifies whether or not the drop-down editor is displayed.

placeholder

The text displayed by the widget when the widget value is empty.

readOnly

A Boolean value specifying whether or not the widget is read-only.

rtlEnabled

Switches the widget to a right-to-left representation.

searchExpr

Specifies the name of a data source item field or an expression whose value is compared to the search criterion.

searchMode

Specifies the binary operation used to filter data.

searchTimeout

Specifies the time delay, in milliseconds, after the last character has been typed in, before a search is executed.

selectedItem

Gets the currently selected item.

showClearButton

Specifies whether to display the Clear button in the widget.

spellcheck

Specifies whether or not the widget checks the inner text for spelling mistakes.

tabIndex

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

text

The read-only option that holds the text displayed by the widget input element.

validationError

Specifies information on the validation error when using a custom validation engine. Should be changed at runtime along with the isValid option.

validationMessageMode

Specifies how the message about the validation rules that are not satisfied by this editor's value is displayed.

value

Specifies the current value displayed by the widget.

valueChangeEvent

Specifies DOM event names that update a widget's value.

valueExpr

Specifies which data field provides the widget's value. When this option is not set, the value is the entire data object.

visible

Specifies whether the widget is visible.

width

Specifies the widget's width.

Methods

This section describes the members used to manipulate the widget.

Name Description
beginUpdate()

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

blur()

Removes focus from the input element.

content()

Gets the popup window's content.

defaultOptions(rule)

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

dispose()

Removes the widget from the DOM.

element()

Gets the root widget element.

endUpdate()

Refreshes the widget after a call of the beginUpdate() method.

field()

Gets the widget's <input> element.

focus()

Sets focus to the input element representing 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.

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. Call it if you made modifications that changed the widget's state to invalid.

reset()

Resets the value option to the default value.

Events

This section describes events fired by this widget.

Name Description
change

Fires when a change within the widget's input element is committed by an end user.

closed

Fires after a drop-down list has been hidden.

contentReady

Raised when the widget's content is ready.

copy

Fires after the widget's input has been copied.

cut

Fires after the Cut DOM event has fired.

disposing

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

enterKey

Fires after the Enter key has been pressed within the widget's input element.

focusIn

Fires after the widget's input has been focused.

focusOut

Fires after the widget's input element has lost focus.

initialized

Raised only once, after the widget is initialized.

input

Fires when a value within the widget's input element is changed by an end user.

itemClick

Fires when a widget item is clicked.

keyDown

Fires when a key is pressed down within the widget's input element.

keyPress

Fires when the keypress DOM event has been raised for the current input element.

keyUp

Fires when a key is released within the widget's input element.

opened

Fires when the drop-down editor is shown.

optionChanged

Raised after a widget option is changed.

paste

Fires after the widget's input has been pasted.

selectionChanged

Fires when the selection changes.

valueChanged

Fires when the editor value changes.

See Also

Default Item Template

This section lists the data source fields that are used in a default item template.

Type:

Object

By default, a predefined item template is applied to display the items of this widget. This template is based on certain fields of the data source provided for this widget. Below is the list of these fields. If the default item template is not appropriate for your task, implement a custom item template based on these or other fields of your data source.

See Also