SelectBox Configuration

    An object defining configuration options for the dxSelectBox widget.

    accessKey

    Specifies a shortcut key that sets focus on the widget element.

    Type: String
    Default Value: null

    The accessKey option value is passed to the accesskey attribute of the actual HTML element of the widget.

    activeStateEnabled

    A Boolean value specifying whether or not the widget changes its state when interacting with a user.

    Type: Boolean
    Default Value: false

    This option is used when the widget is displayed on a platform whose guidelines include the active state change for widgets.

    attr

    Specifies HTML attributes applied to the inner input element of the widget.

    Type: Object
    Default Value: {}

    changeAction

    Deprecated

    Use the onChange option instead.

    closeAction

    Deprecated

    Use the onClosed option instead.

    copyAction

    Deprecated

    Use the onCopy option instead.

    cutAction

    Deprecated

    Use the onCut option instead.

    dataSource

    A data source used to fetch data to be displayed by the widget.

    Default Value: null

    You can assign an array directly to this option as well as use the Data Source provided by the DevExtreme library.

    To display widget items, a default template can be used. This template is based on the data source fields that are listed in the Default Item Template section of the widget's API. Alternatively, you can implement a custom item template.

    See Also
    Show Example:
    AngularJS
    Knockout
    jQuery
    <div ng-controller="demoController">
        <div dx-select-box="{
            dataSource: selectBoxData,
            placeholder: 'Select a state',
            displayExpr: 'name'
        }">
            <div data-options="dxTemplate: { name: 'item' }">
                <p><b>{{name}}</b> ({{capital}})</p>
            </div>
        </div>
        <div class="dx-fieldset">
            <div class="dx-field">
                <div class="dx-field-label">Sort by</div>
                <div class="dx-field-value" dx-select-box="{
                    items: ['name', 'capital'],
                    value: 'name',
                    onValueChanged: sortByChanged
                }"></div>
            </div>
        </div>
    </div>
    
    var myApp = angular.module('myApp', ['dx']);
    myApp.controller("demoController", function ($scope) {
        $scope.capital = "";
        $scope.selectBoxData = new DevExpress.data.DataSource({
            store: [],
            paginate: false,
            sort: 'name'
        });
        $scope.sortByChanged = function (e) {
            $scope.selectBoxData.sort(e.value);
            $scope.selectBoxData.load();
        };
        $.get("/Content/data/states.txt", function (data) {
            for (var i = 0; i < data.length; i++) {
                $scope.selectBoxData.store().insert(data[i]);
            }
            $scope.selectBoxData.load();
        }, "json");
    });
    angular.element(document).ready(function () {
        angular.bootstrap(document, ['myApp']);
    });
    
    body {
        text-align: center;
    }
    .dx-selectbox {
        margin: 10px;
    }
    
    <div data-bind="dxSelectBox:{
        dataSource: selectBoxData,
        placeholder: 'Select a state',
        displayExpr: 'name'
    }">
        <div data-options="dxTemplate: { name: 'item' }">
            <p><b data-bind="text: name"></b> (<span data-bind="text: capital"></span>)</p>
        </div>
    </div>
    <div class="dx-fieldset">
        <div class="dx-field">
            <div class="dx-field-label">Sort by</div>
            <div class="dx-field-value" data-bind="dxSelectBox: {
                items: ['name', 'capital'],
                value: 'name',
                onValueChanged: sortByChanged
            }"></div>
        </div>
    </div>
    
    var myViewModel = {
        capital: ko.observable(""),
        selectBoxData: new DevExpress.data.DataSource({
            store: [],
            paginate: false,
            sort: 'name'
        }),
        sortByChanged: function (e) {
            this.selectBoxData.sort(e.value);
            this.selectBoxData.load();
        }
    }
    $.get("/Content/data/states.txt", function (data) {
        for (var i = 0; i < data.length; i++) {
            myViewModel.selectBoxData.store().insert(data[i]);
        }
        myViewModel.selectBoxData.load();
    }, "json");
    ko.applyBindings(myViewModel);
    
    body {
        text-align: center;
    }
    .dx-selectbox {
        margin: 10px;
    }
    
    <div id="mySelectBox"></div>
    <div class="dx-fieldset">
        <div class="dx-field">
            <div class="dx-field-label">Sort by</div>
            <div class="dx-field-value" id="sortBySelector"></div>
        </div>
    </div>
    
    var selectBoxData = new DevExpress.data.DataSource({
        store: [],
        paginate: false,
        sort: 'name'
    });
    $("#mySelectBox").dxSelectBox({
        dataSource: selectBoxData,
        placeholder: 'Select a state',
        displayExpr: 'name',
        itemTemplate: function (itemData, itemIndex, itemElement) {
            itemElement.append('<p><b>' + itemData.name + '</b> (' + itemData.capital + ')</p>');
        }
    });
    $("#sortBySelector").dxSelectBox({
        items: ['name', 'capital'],
        value: 'name',
        onValueChanged: function (e) {
            selectBoxData.sort(e.value);
            selectBoxData.load();
        }
    });
    $.get("/Content/data/states.txt", function (data) {
        for (var i = 0; i < data.length; i++) {
            selectBoxData.store().insert(data[i]);
        }
        selectBoxData.load();
    }, "json")
    
    body {
        text-align: center;
    }
    .dx-selectbox {
        margin: 10px;
    }
    

    deferRendering

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

    Type: Boolean
    Default Value: true

    If this option is set to true, widget content is rendered when showing the widget. Otherwise, widget content is rendered when rendering the widget.

    disabled

    A Boolean value specifying whether or not the widget can respond to user interaction.

    Type: Boolean
    Default Value: false

    Create an observable variable and assign it to this option to specify the availability of the widget at runtime.

    Show Example:
    AngularJS
    Knockout
    jQuery
    <div ng-controller="demoController">
        <div dx-select-box="{
            dataSource: selectBoxData,
            placeholder: 'Select a state',
            displayExpr: 'name',
            bindingOptions: {
                disabled: 'selectBoxDisabled'
            }
        }"></div>
        <div class="dx-fieldset">
            <div class="dx-field">
                <div class="dx-field-label">disabled</div>
                <div class="dx-field-value" dx-switch="{
                    bindingOptions: {
                        value: 'selectBoxDisabled'
                    }
                }"></div>
            </div>
        </div>
    </div>
    
    var myApp = angular.module('myApp', ['dx']);
    myApp.controller("demoController", function ($scope) {
        $scope.selectBoxDisabled = false;
        $scope.selectBoxData = new DevExpress.data.DataSource({
            store: [],
            paginate: false
        });
        $.get("/Content/data/states.txt", function (data) {
            for (var i = 0; i < data.length; i++) {
                $scope.selectBoxData.store().insert(data[i]);
            }
            $scope.selectBoxData.load();
        }, "json");
    });
    angular.element(document).ready(function () {
        angular.bootstrap(document, ['myApp']);
    });
    
    body {
        text-align: center;
    }
    .dx-selectbox {
        margin: 10px;
    }
    
    <div data-bind="dxSelectBox:{
        dataSource: selectBoxData,
        placeholder: 'Select a state',
        displayExpr: 'name',
        disabled: selectBoxDisabled
    }"></div>
    <div class="dx-fieldset">
        <div class="dx-field">
            <div class="dx-field-label">disabled</div>
            <div class="dx-field-value" data-bind="dxSwitch: {
                value: selectBoxDisabled
            }"></div>
        </div>
    </div>
    
    var myViewModel = {
        selectBoxDisabled: ko.observable(false),
        selectBoxData: new DevExpress.data.DataSource({
            store: [],
            paginate: false
        })
    }
    $.get("/Content/data/states.txt", function (data) {
        for (var i = 0; i < data.length; i++) {
            myViewModel.selectBoxData.store().insert(data[i]);
        }
        myViewModel.selectBoxData.load();
    }, "json");
    ko.applyBindings(myViewModel);
    
    body {
        text-align: center;
    }
    .dx-selectbox {
        margin: 10px;
    }
    
    <div id="mySelectBox"></div>
    <div class="dx-fieldset">
        <div class="dx-field">
            <div class="dx-field-label">disabled</div>
            <div class="dx-field-value" id="disabledSelector"></div>
        </div>
    </div>
    
    var selectBoxData = new DevExpress.data.DataSource({
        store: [],
        paginate: false
    });
    $("#mySelectBox").dxSelectBox({
        dataSource: selectBoxData,
        placeholder: 'Select a state',
        displayExpr: 'name'
    });
    $("#disabledSelector").dxSwitch({
        value: false,
        onValueChanged: function (e) {
            $("#mySelectBox").dxSelectBox("instance").option("disabled", e.value);
        }
    });
    $.get("/Content/data/states.txt", function (data) {
        for (var i = 0; i < data.length; i++) {
            selectBoxData.store().insert(data[i]);
        }
        selectBoxData.load();
    }, "json")
    
    body {
        text-align: center;
    }
    .dx-selectbox {
        margin: 10px;
    }
    

    displayExpr

    Specifies the name of the data source item field whose value is displayed by the widget.

    Type: String|function
    Default Value: undefined

    If the data source item is a simple object holding a value (string, numeric, Boolean, etc.), assign 'this' to the displayExpr option. If the item is a plain object item, assign the required field name or path to the option.

    Show Example:
    AngularJS
    Knockout
    jQuery
    <div ng-controller="demoController">
        <div dx-select-box="{
            dataSource: selectBoxData,
            placeholder: 'Select a state',
            bindingOptions: {
                displayExpr: 'displayExprValue'
            }
        }"></div>
        <div class="dx-fieldset">
            <div class="dx-field">
                <div class="dx-field-label">displayExpr</div>
                <div class="dx-field-value" dx-select-box="{
                    items: [ 'name', 'capital' ],
                    bindingOptions: {
                        value: 'displayExprValue'
                    }
                }"></div>
            </div>
        </div>
    </div>
    
    var myApp = angular.module('myApp', ['dx']);
    myApp.controller("demoController", function ($scope) {
        $scope.displayExprValue = 'name';
        $scope.selectBoxData = new DevExpress.data.DataSource({
            store: [],
            paginate: false
        });
        $.get("/Content/data/states.txt", function (data) {
            for (var i = 0; i < data.length; i++) {
                $scope.selectBoxData.store().insert(data[i]);
            }
            $scope.selectBoxData.load();
        }, "json");
    });
    angular.element(document).ready(function () {
        angular.bootstrap(document, ['myApp']);
    });
    
    body {
        text-align: center;
    }
    .dx-selectbox {
        margin: 10px;
    }
    
    <div data-bind="dxSelectBox:{
        dataSource: selectBoxData,
        placeholder: 'Select a state',
        displayExpr: displayExprValue
    }"></div>
    <div class="dx-fieldset">
        <div class="dx-field">
            <div class="dx-field-label">displayExpr</div>
            <div class="dx-field-value" data-bind="dxSelectBox: {
                items: [ 'name', 'capital' ],
                value: displayExprValue
            }"></div>
        </div>
    </div>
    
    var myViewModel = {
        displayExprValue: ko.observable('name'),
        selectBoxData: new DevExpress.data.DataSource({
            store: [],
            paginate: false
        })
    }
    $.get("/Content/data/states.txt", function (data) {
        for (var i = 0; i < data.length; i++) {
            myViewModel.selectBoxData.store().insert(data[i]);
        }
        myViewModel.selectBoxData.load();
    }, "json");
    ko.applyBindings(myViewModel);
    
    body {
        text-align: center;
    }
    .dx-selectbox {
        margin: 10px;
    }
    
    <div id="mySelectBox"></div>
    <div class="dx-fieldset">
        <div class="dx-field">
            <div class="dx-field-label">displayExpr</div>
            <div class="dx-field-value" id="displayExprSelector"></div>
        </div>
    </div>
    
    var selectBoxData = new DevExpress.data.DataSource({
        store: [],
        paginate: false
    });
    $("#mySelectBox").dxSelectBox({
        dataSource: selectBoxData,
        placeholder: 'Select a state',
        displayExpr: 'name'
    });
    $("#displayExprSelector").dxSelectBox({
        items: ['name', 'capital'],
        value: 'name',
        onValueChanged: function (e) {
            $("#mySelectBox").dxSelectBox("instance").option("displayExpr", e.value);
        }
    });
    $.get("/Content/data/states.txt", function (data) {
        for (var i = 0; i < data.length; i++) {
            selectBoxData.store().insert(data[i]);
        }
        selectBoxData.load();
    }, "json")
    
    body {
        text-align: center;
    }
    .dx-selectbox {
        margin: 10px;
    }
    

    displayValue

    Returns the value currently displayed by the widget.

    Type: String
    Default Value: undefined

    The value you pass to this option does not affect widget behavior. Pass an observable variable to this option to get the value currently displayed by the widget.

    Show Example:
    AngularJS
    Knockout
    jQuery
    <div ng-controller="demoController">
        <div dx-select-box="{
            dataSource: selectBoxData,
            placeholder: 'Select a state',
            displayExpr: 'name',
            bindingOptions: {
                displayValue: 'dispValue'
            }
        }"></div>
        <div class="dx-fieldset">
            <div class="dx-field">
                <div class="dx-field-label">displayValue</div>
                <div class="dx-field-value-static"><b>{{dispValue}}</b></div>
            </div>
        </div>
    </div>
    
    var myApp = angular.module('myApp', ['dx']);
    myApp.controller("demoController", function ($scope) {
        $scope.dispValue = '';
        $scope.selectBoxData = new DevExpress.data.DataSource({
            store: [],
            paginate: false
        });
        $.get("/Content/data/states.txt", function (data) {
            for (var i = 0; i < data.length; i++) {
                $scope.selectBoxData.store().insert(data[i]);
            }
            $scope.selectBoxData.load();
        }, "json");
    });
    angular.element(document).ready(function () {
        angular.bootstrap(document, ['myApp']);
    });
    
    body {
        text-align: center;
    }
    .dx-selectbox {
        margin: 10px;
    }
    
    <div data-bind="dxSelectBox:{
        dataSource: selectBoxData,
        placeholder: 'Select a state',
        displayExpr: 'name',
        displayValue: dispValue
    }"></div>
    <div class="dx-fieldset">
        <div class="dx-field">
            <div class="dx-field-label">displayValue</div>
            <div class="dx-field-value-static"><b data-bind="text: dispValue"></b></div>
        </div>
    </div>
    
    var myViewModel = {
        dispValue: ko.observable(''),
        selectBoxData: new DevExpress.data.DataSource({
            store: [],
            paginate: false
        })
    }
    $.get("/Content/data/states.txt", function (data) {
        for (var i = 0; i < data.length; i++) {
            myViewModel.selectBoxData.store().insert(data[i]);
        }
        myViewModel.selectBoxData.load();
    }, "json");
    ko.applyBindings(myViewModel);
    
    body {
        text-align: center;
    }
    .dx-selectbox {
        margin: 10px;
    }
    
    <div id="mySelectBox"></div>
    <div class="dx-fieldset">
        <div class="dx-field">
            <div class="dx-field-label">displayValue</div>
            <div class="dx-field-value-static"><b id="displayValueField"></b></div>
        </div>
    </div>
    
    var selectBoxData = new DevExpress.data.DataSource({
        store: [],
        paginate: false
    });
    $("#mySelectBox").dxSelectBox({
        dataSource: selectBoxData,
        placeholder: 'Select a state',
        displayExpr: 'name',
        onValueChanged: function (e) {
            $("#displayValueField").text($("#mySelectBox").dxSelectBox("instance").option("displayValue"));
        }
    });
    $.get("/Content/data/states.txt", function (data) {
        for (var i = 0; i < data.length; i++) {
            selectBoxData.store().insert(data[i]);
        }
        selectBoxData.load();
    }, "json")
    
    body {
        text-align: center;
    }
    .dx-selectbox {
        margin: 10px;
    }
    

    editEnabled

    Deprecated

    Use the fieldEditEnabled option instead.

    enterKeyAction

    Deprecated

    Use the onEnterKey option instead.

    fieldEditEnabled

    Specifies whether or not the widget allows an end-user to enter a custom value.

    Type: Boolean
    Default Value: false

    fieldTemplate

    The template to be used for rendering the widget text field.

    Type: String|function|DOM Node|jQuery
    Function parameters:
    selectedItem: Object
    The data that is bound to the selected item.
    Return Value: String|DOM Node|jQuery
    A template name or a template container.
    Default Value: null

    This option enables you to render the widget text field depending on selected item values.

    HTML
    <div data-options="dxTemplate: { name:'myField' }">
        <div data-bind="dxTextBox: { value: name + ' (' + capital + ')' } "></div>
    </div>

    NOTE: A binding context of a field template is the widget's value, that is the currently selected item. So, you can bind template elements to the item's fields directly (see the code above). To access another binding context within a field template, use the Knockout/Angular binding variables.

    Show Example:
    AngularJS
    Knockout
    jQuery
    <div ng-controller="demoController">
        <div dx-select-box="{
            dataSource: selectBoxData,
            displayExpr: 'name',
            fieldTemplate: 'field'
        }">
            <div data-options="dxTemplate: { name: 'field' }">
                <div dx-text-box="{
                    placeholder: 'Select a state',
                    value: capital ? name + ' (' + capital + ')' : ''
                }"></div>
            </div>
        </div>
    </div>
    
    var myApp = angular.module('myApp', ['dx']);
    myApp.controller("demoController", function ($scope) {
        $scope.selectBoxData = new DevExpress.data.DataSource({
            store: [],
            paginate: false
        });
        $.get("/Content/data/states.txt", function (data) {
            for (var i = 0; i < data.length; i++) {
                $scope.selectBoxData.store().insert(data[i]);
            }
            $scope.selectBoxData.load();
        }, "json");
    });
    angular.element(document).ready(function () {
        angular.bootstrap(document, ['myApp']);
    });
    
    body {
        text-align: center;
    }
    .dx-selectbox {
        margin: 10px;
    }
    
    <div data-bind="dxSelectBox:{
        dataSource: selectBoxData,
        displayExpr: 'name',
        fieldTemplate: 'field'
    }">
        <div data-options="dxTemplate: { name: 'field' }">
            <div data-bind="dxTextBox: { 
                placeholder: 'Select a state',
                value: $data !== null ? name + ' (' + capital + ')' : ''
            }"></div>
        </div>
    </div>
    
    var myViewModel = {
        selectBoxData: new DevExpress.data.DataSource({
            store: [],
            paginate: false
        })
    }
    $.get("/Content/data/states.txt", function (data) {
        for (var i = 0; i < data.length; i++) {
            myViewModel.selectBoxData.store().insert(data[i]);
        }
        myViewModel.selectBoxData.load();
    }, "json");
    ko.applyBindings(myViewModel);
    
    body {
        text-align: center;
    }
    .dx-selectbox {
        margin: 10px;
    }
    
    <div id="mySelectBox"></div>
    
    var selectBoxData = new DevExpress.data.DataSource({
        store: [],
        paginate: false
    });
    $("#mySelectBox").dxSelectBox({
        dataSource: selectBoxData,
        placeholder: 'Select a state',
        displayExpr: 'name',
        fieldTemplate: function (selectedItem, fieldElement) {
            var textBox = $("<div>").dxTextBox({
                placeholder: 'Select a state',
                value: selectedItem ? selectedItem.name + ' (' + selectedItem.capital + ')' : ''
            });
            fieldElement.append(textBox);
        }
    });
    $.get("/Content/data/states.txt", function (data) {
        for (var i = 0; i < data.length; i++) {
            selectBoxData.store().insert(data[i]);
        }
        selectBoxData.load();
    }, "json")
    
    body {
        text-align: center;
    }
    .dx-selectbox {
        margin: 10px;
    }
    

    focusInAction

    Deprecated

    Use the onFocusIn option instead.

    focusOutAction

    Deprecated

    Use the onFocusOut option instead.

    focusStateEnabled

    Specifies whether or not the widget supports the focused state and keyboard navigation.

    Type: Boolean
    Default Value: true

    height

    Specifies the height of the widget.

    Type: Number|String|function
    Return Value: Number|String
    The widget height.
    Default Value: undefined

    The option can hold a value of the following types.

    • number
      The height of the widget in pixels

    • string
      A CSS measurement of the widget height (e.g., "55px", "80%", "auto" and "inherit")

    • function
      A function returning the widget height (e.g., height:function(){ return baseHeight - 10 + "%"; })

    hiddenAction

    Deprecated

    Use the onClosed option instead.

    hint

    Specifies the text of the hint displayed for the widget.

    Type: String
    Default Value: undefined

    hoverStateEnabled

    A Boolean value specifying whether or not the widget changes its state when being hovered by an end user.

    Type: Boolean
    Default Value: true

    inputAction

    Deprecated

    Use the onInput option instead.

    isValid

    Specifies whether the editor's value is valid.

    Type: Boolean
    Default Value: true

    You may need to use an editor to inform end users that an error occurred during the validation of a ViewModel field. In this instance, set the editor's isValid option to the isValid property value of the dxValidator that validated the ViewModel's field. In addition, set the editor's validationError option to the validationError property value of the dxValidator object.

    In the code below, the login specified by an end user is validated on the level of the ViewModel. If validation of the login value fails, a validation message is displayed on the Login editor.

    HTML
    <div data-bind="dxTextBox: { value: login, isValid: login.dxValidator.isValid, validationError: login.dxValidator.validationError, placeholder: 'Login' }"></div>
    JavaScript
    var viewModel = {
        login: ko.observable("").extend({
            dxValidator: {
                validationRules: [{ type: 'required', message: 'Login is required' }]
            }
        }),
        //...
    }

    The editor's isValid option, as well as the validationError option, should also be specified when using a custom validation engine. In this instance, the validation result will be displayed for the editor by the means of the DevExtreme Validation UI.

    See Also

    itemRender

    Deprecated

    Use the itemTemplate option instead.

    items

    An array of items displayed by the widget.

    Type: Array

    You can use the dataSource option instead. Unlike the items option, the dataSource option can take on the DataSource configuration object as well as a simple array.

    To display widget items, a default template can be used. This template is based on the data source fields that are listed in the Default Item Template section of the widget's API. Alternatively, you can implement a custom item template.

    See Also

    itemTemplate

    The template to be used for rendering items.

    Type: String|function|DOM Node|jQuery
    Function parameters:
    itemData: Object
    The item object to be rendered.
    itemIndex: Number
    The index of the item to be rendered.
    itemElement: jQuery
    An HTML element of the item to be rendered.
    Return Value: String|DOM Node|jQuery
    A template name or a template container.
    Default Value: "item"
    See Also

    NOTE: A binding context of an item template is the data source object that corresponds to the currently rendered item. So, you can bind template elements to the item object's fields directly (see the code above). To access another binding context within an item template, use the Knockout/Angular binding variables.

    Show Example:
    AngularJS
    Knockout
    jQuery
    <div ng-controller="demoController">
        <div dx-select-box="{
            dataSource: selectBoxData,
            displayExpr: 'name',
            itemTemplate: 'stateItem'
        }">
            <div data-options="dxTemplate: { name: 'stateItem' }" style="text-align: left;">
                <div style="display:inline-block; margin: 5px;">
                    <img style="margin:5px;" ng-attr-src="{{imagePath}}" />
                </div>
                <div style="display:inline-block; margin: 5px;">
                    <p style="font-size:larger;"><b>{{name}}</b></p>
                    <p>Capital: <i>{{capital}}</i></p>
                </div>
            </div>
        </div>
    </div>
    
    var myApp = angular.module('myApp', ['dx']);
    myApp.controller("demoController", function ($scope) {
        $scope.selectBoxData = new DevExpress.data.DataSource({
            store: [],
            map: function (itemData) {
                itemData.imagePath = "/Content/images/doc/15_1/PhoneJS/flags/" + itemData.name.replace(" ", "") + ".gif";
                return itemData;
            }
        });
        $.get("/Content/data/states.txt", function (data) {
            for (var i = 0; i < data.length; i++) {
                $scope.selectBoxData.store().insert(data[i]);
            }
            $scope.selectBoxData.load();
        }, "json");
    });
    angular.element(document).ready(function () {
        angular.bootstrap(document, ['myApp']);
    });
    
    body {
        text-align: center;
    }
    .dx-selectbox {
        margin: 10px;
    }
    
    <div data-bind="dxSelectBox:{
        dataSource: selectBoxData,
        displayExpr: 'name',
        itemTemplate: 'stateItem'
    }">
        <div data-options="dxTemplate:{ name:'stateItem' }" style="text-align: left;">
            <div style="display:inline-block; margin: 5px;">
                <img style="margin:5px;" data-bind="attr: { src: imagePath }" />
            </div>
            <div style="display:inline-block; margin: 5px;">
                <p style="font-size:larger;"><b data-bind="text: name"></b></p>
                <p>Capital: <i data-bind="text: capital"></i></p>
            </div>
        </div>
    </div>
    
    var myViewModel = {
        selectBoxData: new DevExpress.data.DataSource({
            store: [],
            map: function (itemData) {
                itemData.imagePath = "/Content/images/doc/15_1/PhoneJS/flags/" + itemData.name.replace(" ", "") + ".gif";
                return itemData;
            }
        })
    }
    $.get("/Content/data/states.txt", function (data) {
        for (var i = 0; i < data.length; i++) {
            myViewModel.selectBoxData.store().insert(data[i]);
        }
        myViewModel.selectBoxData.load();
    }, "json");
    ko.applyBindings(myViewModel);
    
    body {
        text-align: center;
    }
    .dx-selectbox {
        margin: 10px;
    }
    
    <div id="mySelectBox"></div>
    
    var selectBoxData = new DevExpress.data.DataSource({
        store: [],
        map: function (itemData) {
            itemData.imagePath = "/Content/images/doc/15_1/PhoneJS/flags/" + itemData.name.replace(" ", "") + ".gif";
            return itemData;
        }
    });
    $("#mySelectBox").dxSelectBox({
        dataSource: selectBoxData,
        placeholder: 'Select a state',
        displayExpr: 'name',
        itemTemplate: function (itemData, itemIndex, itemElement) {
            itemElement.css("text-align", "left");
            var leftBlock = $("<div style='display:inline-block; margin: 5px;'>");
            leftBlock.append("<img style='margin:5px;' src='" + itemData.imagePath + "' />");
            itemElement.append(leftBlock);
            var rightBlock = $("<div style='display:inline-block; margin: 5px;'>");
            rightBlock.append("<p style='font-size:larger;'><b>" + itemData.name + "</b></p>");
            rightBlock.append("<p>Capital: <i>" + itemData.capital + "</i></p>");
            itemElement.append(rightBlock);
        }
    });
    $.get("/Content/data/states.txt", function (data) {
        for (var i = 0; i < data.length; i++) {
            selectBoxData.store().insert(data[i]);
        }
        selectBoxData.load();
    }, "json")
    
    body {
        text-align: center;
    }
    .dx-selectbox {
        margin: 10px;
    }
    

    keyDownAction

    Deprecated

    Use the onKeyDown option instead.

    keyPressAction

    Deprecated

    Use the onKeyPress option instead.

    keyUpAction

    Deprecated

    Use the onKeyUp option instead.

    maxLength

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

    Type: String|Number
    Default Value: null

    If the number of entered characters reaches the value assigned to this option, the widget does not allow you to enter any more characters.

    minSearchLength

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

    Type: Number
    Default Value: 0

    This option makes sense only if the searchEnabled option is set to true.

    mode

    The "mode" attribute value of the actual HTML input element representing the text box.

    Type: String
    Default Value: "text"
    Accepted Values: 'text'|'email'|'search'|'tel'|'url'|'password'

    The value of this option affects the set of keyboard buttons shown on the mobile device when the widget gets focus. In addition, the following mode values add visual features to the widget:

    • 'search' - the text box contains the 'X' button, which clears the text box contents
    • 'password' - the text box shows a password character instead of the actual characters typed

    noDataText

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

    Type: String
    Default Value: "No data to display"

    onChange

    A handler for the change event.

    Type: function
    Function parameters:
    e: Object
    Provides function parameters.
    Object structure:
    component: Object
    Provides access to the widget instance.
    element: jQuery
    An HTML element of the widget.
    model: Object
    Provides access to the data that is available for binding against the element. Available only in the Knockout and AngularJS approaches.
    jQueryEvent: jQuery.Event
    Specifies the jQuery event that caused action execution.
    Default Value: null

    Assign a function to perform a custom action when a change within the widget's input element is committed by an end user.

    onClosed

    A handler for the closed event.

    Type: function
    Function parameters:
    e: Object
    Provides function parameters.
    Object structure:
    component: Object
    Provides access to the widget instance.
    element: jQuery
    An HTML element of the widget.
    model: Object
    Provides access to the data that is available for binding against the element. Available only in the Knockout and AngularJS approaches.
    Default Value: null

    Assign a function to perform a custom action after a drop-down editor has been hidden.

    onContentReady

    A handler for the contentReady event.

    Type: function
    Function parameters:
    e: Object
    Provides function parameters.
    Object structure:
    component: Object
    Provides access to the widget instance.
    element: jQuery
    An HTML element of the widget.
    model: Object
    Provides access to the data that is available for binding against the element. Available only in the Knockout and AngularJS approaches.
    Default Value: null

    If data displayed by the widget is specified using a DataSource instance, the contentReady event fires each time the load() method of the DataSource instance is called as well as when widget content is ready. In this case, when you create the widget, the contentReady event is raised twice: when the widget's content is ready (at this moment, the widget does not display items) and when the DataSource is loaded (the widget displays the loaded items).

    onCopy

    A handler for the copy event.

    Type: function
    Function parameters:
    e: Object
    Provides function parameters.
    Object structure:
    component: Object
    Provides access to the widget instance.
    element: jQuery
    An HTML element of the widget.
    model: Object
    Provides access to the data that is available for binding against the element. Available only in the Knockout and AngularJS approaches.
    jQueryEvent: jQuery.Event
    Specifies the jQuery event that caused the action execution.
    Default Value: null

    Assign a function to perform a custom action after the widget's input is copied.

    onCut

    A handler for the cut event.

    Type: function
    Function parameters:
    e: Object
    Provides function parameters.
    Object structure:
    component: Object
    Provides access to the widget instance.
    element: jQuery
    An HTML element of the widget.
    model: Object
    Provides access to the data that is available for binding against the element. Available only in the Knockout and AngularJS approaches.
    jQueryEvent: jQuery.Event
    Specifies the jQuery event that caused the action execution.
    Default Value: null

    Assign a function to perform a custom action after the widget's input is cut.

    onDisposing

    A handler for the disposing event.

    Type: function
    Function parameters:
    e: Object
    Provides function parameters.
    Object structure:
    component: Object
    Provides access to the widget instance.
    element: jQuery
    An HTML element of the widget.
    model: Object
    Provides access to the data that is available for binding against the element. Available only in the Knockout and AngularJS approaches.
    Default Value: null

    onEnterKey

    A handler for the enterKey event.

    Type: function
    Function parameters:
    e: Object
    Provides function parameters.
    Object structure:
    component: Object
    Provides access to the widget instance.
    element: jQuery
    An HTML element of the widget.
    model: Object
    Provides access to the data that is available for binding against the element. Available only in the Knockout and AngularJS approaches.
    jQueryEvent: jQuery.Event
    Specifies the jQuery event that caused the action execution.
    Default Value: null

    Assign a function to perform a custom action after a key is entered within the widget's input element.

    onFocusIn

    A handler for the focusIn event.

    Type: function
    Function parameters:
    e: Object
    Provides function parameters.
    Object structure:
    component: Object
    Provides access to the widget instance.
    element: jQuery
    An HTML element of the widget.
    model: Object
    Provides access to the data that is available for binding against the element. Available only in the Knockout and AngularJS approaches.
    jQueryEvent: jQuery.Event
    Specifies the jQuery event that caused the action execution.
    Default Value: null

    Assign a function to perform a custom action after the widget's input is focused.

    onFocusOut

    A handler for the focusOut event.

    Type: function
    Function parameters:
    e: Object
    Provides function parameters.
    Object structure:
    component: Object
    Provides access to the widget instance.
    element: jQuery
    An HTML element of the widget.
    model: Object
    Provides access to the data that is available for binding against the element. Available only in the Knockout and AngularJS approaches.
    jQueryEvent: jQuery.Event
    Specifies the jQuery event that caused the action execution.
    Default Value: null

    Assign a function to perform a custom action after the widget's input element loses focus.

    onInitialized

    A handler for the initialized event.

    Type: function
    Function parameters:
    e: Object
    Provides function parameters.
    Object structure:
    component: Object
    Provides access to the widget instance.
    element: jQuery
    An HTML element of the widget.
    Default Value: null

    Assign a function to perform a custom action when the widget is initialized.

    onInput

    A handler for the input event.

    Type: function
    Function parameters:
    e: Object
    Provides function parameters.
    Object structure:
    component: Object
    Provides access to the widget instance.
    element: jQuery
    An HTML element of the widget.
    model: Object
    Provides access to the data that is available for binding against the element. Available only in the Knockout and AngularJS approaches.
    jQueryEvent: jQuery.Event
    Specifies the jQuery event that caused action execution.
    Default Value: null

    Assign a function to perform a custom action when a value within the widget's input element is changed by an end user.

    onItemClick

    A handler for the itemClick event.

    Type: function
    Function parameters:
    e: Object
    Provides function parameters.
    Object structure:
    component: Object
    Provides access to the widget instance.
    element: jQuery
    An HTML element of the widget.
    model: Object
    Provides access to the data that is available for binding against the element. Available only in the Knockout and AngularJS approaches.
    itemElement: Object
    An HTML element of the item.
    Default Value: null

    Assign a function to perform a custom action when a widget item is clicked.

    To navigate to a specific URL when the itemClick event fires, assign that URL directly to this option.

    onKeyDown

    A handler for the keyDown event.

    Type: function
    Function parameters:
    e: Object
    Provides function parameters.
    Object structure:
    component: Object
    Provides access to the widget instance.
    element: jQuery
    An HTML element of the widget.
    model: Object
    Provides access to the data that is available for binding against the element. Available only in the Knockout and AngularJS approaches.
    jQueryEvent: jQuery.Event
    Specifies the jQuery event that caused action execution.
    Default Value: null

    Assign a function to perform a custom action when a key is pressed down within the widget's input element.

    onKeyPress

    A handler for the keyPress event.

    Type: function
    Function parameters:
    e: Object
    Provides function parameters.
    Object structure:
    component: Object
    Provides access to the widget instance.
    element: jQuery
    An HTML element of the widget.
    model: Object
    Provides access to the data that is available for binding against the element. Available only in the Knockout and AngularJS approaches.
    jQueryEvent: jQuery.Event
    Specifies the jQuery event that caused the action execution.
    Default Value: null

    Assign a function to perform a custom action when the keypress DOM event is raised for the current input element.

    onKeyUp

    A handler for the keyUp event.

    Type: function
    Function parameters:
    e: Object
    Provides function parameters.
    Object structure:
    component: Object
    Provides access to the widget instance.
    element: jQuery
    An HTML element of the widget.
    model: Object
    Provides access to the data that is available for binding against the element. Available only in the Knockout and AngularJS approaches.
    jQueryEvent: jQuery.Event
    Specifies the jQuery event that caused action execution.
    Default Value: null

    Assign a function to perform a custom action when a key is released within the widget's input element.

    onOpened

    A handler for the opened event.

    Type: function
    Function parameters:
    e: Object
    Provides function parameters.
    Object structure:
    component: Object
    Provides access to the widget instance.
    element: jQuery
    An HTML element of the widget.
    model: Object
    Provides access to the data that is available for binding against the element. Available only in the Knockout and AngularJS approaches.
    Default Value: null

    Assign a function to perform a custom action when the drop-down editor is shown.

    onOptionChanged

    A handler for the optionChanged event.

    Type: function
    Function parameters:
    e: Object
    Provides function parameters.
    Object structure:
    component: Object
    Provides access to the widget instance.
    name: String
    Specifies the name of the option whose value is changed.
    fullName: String
    Specifies a full name of the option whose value is changed. The full name is formed by concatenating the names of the options that are presented in the hierarchy of the given option. The names are delimited by commas.
    value: any
    Specifies a new value for the option.
    element: jQuery
    An HTML element of the widget.
    model: Object
    Provides access to the data that is available for binding against the element. Available only in the Knockout and AngularJS approaches.
    Default Value: null

    Assign a function to perform a custom action after an option of the component is changed.

    onPaste

    A handler for the paste event.

    Type: function
    Function parameters:
    e: Object
    Provides function parameters.
    Object structure:
    component: Object
    Provides access to the widget instance.
    element: jQuery
    An HTML element of the widget.
    model: Object
    Provides access to the data that is available for binding against the element. Available only in the Knockout and AngularJS approaches.
    jQueryEvent: jQuery.Event
    Specifies the jQuery event that caused the action execution.
    Default Value: null

    Assign a function to perform a custom action after the widget's input is pasted.

    onSelectionChanged

    A handler for the selectionChanged event.

    Type: function
    Function parameters:
    e: Object
    Provides function parameters.
    Object structure:
    component: Object
    Provides access to the widget instance.
    element: jQuery
    An HTML element of the widget.
    model: Object
    Provides access to the data that is available for binding against the element. Available only in the Knockout and AngularJS approaches.
    selectedItem: Object
    Provides access to the currently selected item.
    Default Value: null

    Assign a function to perform a custom action when the selection changes.

    onValueChanged

    A handler for the valueChanged event.

    Type: function
    Function parameters:
    e: Object
    Provides function parameters.
    Object structure:
    component: Object
    Provides access to the widget instance.
    element: jQuery
    An HTML element of the widget.
    model: Object
    Provides access to the data that is available for binding against the element. Available only in the Knockout and AngularJS approaches.
    value: Object
    The widget's new value.
    previousValue: Object
    The widget's previous value.
    itemData: Object
    The data that is bound to the new item.
    jQueryEvent: jQuery.Event
    Specifies the jQuery event that caused the action execution.
    Default Value: null

    Assign a function to perform a custom action when the editor value changes.

    Show Example:
    AngularJS
    Knockout
    jQuery
    <div ng-controller="demoController">
        <div dx-select-box="{
            dataSource: selectBoxData,
            onValueChanged: processValueChange,
            displayExpr: 'name'
        }"></div>
    </div>
    
    var myApp = angular.module('myApp', ['dx']);
    myApp.controller("demoController", function ($scope) {
        $scope.selectBoxData = new DevExpress.data.DataSource([]);
        $scope.processValueChange = function (e) {
            DevExpress.ui.notify("The selected state is \"" + e.value.name + "\"", "info", 1500);
        };
        $.get("/Content/data/states.txt", function (data) {
            for (var i = 0; i < data.length; i++) {
                $scope.selectBoxData.store().insert(data[i]);
            }
            $scope.selectBoxData.load();
        }, "json");
    });
    angular.element(document).ready(function () {
        angular.bootstrap(document, ['myApp']);
    });
    
    body {
        text-align: center;
    }
    .dx-selectbox {
        margin: 10px;
    }
    
    <div data-bind="dxSelectBox:{
        dataSource: selectBoxData,
        onValueChanged: processValueChange,
        displayExpr: 'name'
    }"></div>
    
    var myViewModel = {
        selectBoxData: new DevExpress.data.DataSource([]),
        processValueChange: function (e) {
            DevExpress.ui.notify("The selected state is \"" + e.value.name + "\"", "info", 1500);
        }
    }
    $.get("/Content/data/states.txt", function (data) {
        for (var i = 0; i < data.length; i++) {
            myViewModel.selectBoxData.store().insert(data[i]);
        }
        myViewModel.selectBoxData.load();
    }, "json");
    ko.applyBindings(myViewModel);
    
    body {
        text-align: center;
    }
    .dx-selectbox {
        margin: 10px;
    }
    
    <div id="mySelectBox"></div>
    
    var selectBoxData = new DevExpress.data.DataSource([]);
    $("#mySelectBox").dxSelectBox({
        dataSource: selectBoxData,
        displayExpr: 'name',
        onValueChanged: function (e) {
            DevExpress.ui.notify("The selected state is \"" + e.value.name + "\"", "info", 1500);
        }
    });
    $.get("/Content/data/states.txt", function (data) {
        for (var i = 0; i < data.length; i++) {
            selectBoxData.store().insert(data[i]);
        }
        selectBoxData.load();
    }, "json")
    
    body {
        text-align: center;
    }
    .dx-selectbox {
        margin: 10px;
    }
    

    openAction

    Deprecated

    Use the onOpened option instead.

    opened

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

    Type: Boolean
    Default Value: false

    pagingEnabled

    Deprecated

    Use the dataSource.paginate option instead.

    Specifies whether or not the widget displays items by pages.

    Type: Boolean
    Default Value: undefined

    pasteAction

    Deprecated

    Use the onPaste option instead.

    placeholder

    The text that is provided as a hint in the select box editor.

    Type: String
    Default Value: "Select"

    readOnly

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

    Type: Boolean
    Default Value: false

    rtlEnabled

    Specifies whether or not the current component supports a right-to-left representation.

    Type: Boolean
    Default Value: false

    If you need to switch the display of this DevExtreme component to right-to-left, enable a specifically designed configuration option - rtlEnabled. When this option is set to true, the text flows from right to left, and the layout the component's elements is reversed. To switch the entire application/site to a right-to-left representation, use the static DevExpress.rtlEnabled field.

    searchEnabled

    Specifies whether or not the widget supports searching.

    Type: Boolean
    Default Value: false

    searchExpr

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

    Type: object:Search expression
    Default Value: null

    searchMode

    Specifies the binary operation used to filter data.

    Type: String
    Default Value: "contains"
    Accepted Values: "contains"|"startswith"

    searchTimeout

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

    Type: Number
    Default Value: 500

    selectedItem

    Gets the currently selected item.

    Type: Object
    Default Value: null

    NOTE: This option is read-only.

    showClearButton

    Specifies whether to display the Clear button in the widget.

    Type: Boolean
    Default Value: false

    The Clear button sets the widget value to undefined.

    shownAction

    Deprecated

    Use the onOpened option instead.

    spellcheck

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

    Type: Boolean
    Default Value: false

    tabIndex

    Specifies the widget tab index.

    Type: Number
    Default Value: 0

    text

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

    Type: String

    validationError

    Holds the object that defines the error that occurred during validation.

    Type: Object
    Default Value: undefined

    You may need to use an editor to inform end users that an error occurred during the validation of a ViewModel field. In this instance, set the editor's isValid option to the isValid property value of the dxValidator that validated the ViewModel's field. In addition, set the editor's validationError option to the validationError property value of the dxValidator object.

    In the code, the login specified by an end user is validated on the level of the ViewModel. If validation of the login value fails, a validation message is displayed on the Login editor.

    HTML
    <div data-bind="dxTextBox: { value: login, isValid: login.dxValidator.isValid, validationError: login.dxValidator.validationError, placeholder: 'Login' }"></div>
    JavaScript
    var viewModel = {
        login: ko.observable("").extend({
            dxValidator: {
                validationRules: [{ type: 'required', message: 'Login is required' }]
            }
        }),
        //...
    }

    The editor's validationError option, as well as the isValid option, should also be specified when using a custom validation engine. In this instance, the validation result will be displayed for the editor by the means of the DevExtreme Validation UI.

    See Also

    validationMessageMode

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

    Type: String
    Default Value: "auto"
    Accepted Values: 'auto'|'always'

    The following option values are possible:

    • auto
      The tooltip with the message is displayed when the editor is in focus.
    • always
      The tooltip with the message is not hidden when the editor loses focus.

    value

    The currently selected value in the widget.

    Type: String
    Default Value: null

    If select box items represent objects, the value option returns the value of the specified field of the currently selected item object. The field whose value is returned by the value option is specified via the valueExpr option.

    Show Example:
    AngularJS
    Knockout
    jQuery
    <div ng-controller="demoController">
        <div class="dx-fieldset">
            <div class="dx-field">
                <div class="dx-field-label">state</div>
                <div class="dx-field-value" dx-select-box="{
                    placeholder: 'Select',
                    dataSource: selectBoxData,
                    displayExpr: 'name',
                    bindingOptions: {
                        value: 'selectedValue',
                        valueExpr: 'currentExpr'
                    }
                }"></div>
            </div>
            <div class="dx-field">
                <div class="dx-field-label">{{currentExpr}}</div>
                <div class="dx-field-value-static"><b>{{selectedValue}}</b></div>
            </div>
        </div>
        <div class="dx-fieldset">
            <div class="dx-field">
                <div class="dx-field-label">valueExpr</div>
                <div class="dx-field-value" dx-select-box="{
                    items: ['name', 'capital'],
                    bindingOptions: {
                        value: 'currentExpr'
                    }
                }"></div>
            </div>
        </div>
    </div>
    
    var myApp = angular.module('myApp', ['dx']);
    myApp.controller("demoController", function ($scope) {
        $scope.selectedValue = '';
        $scope.currentExpr = 'name';
        $scope.selectBoxData = new DevExpress.data.DataSource({
            store: [],
            paginate: false
        });
        $.get("/Content/data/states.txt", function (data) {
            for (var i = 0; i < data.length; i++) {
                $scope.selectBoxData.store().insert(data[i]);
            }
            $scope.selectBoxData.load();
        }, "json");
    });
    angular.element(document).ready(function () {
        angular.bootstrap(document, ['myApp']);
    });
    
    body {
        text-align: center;
    }
    .dx-selectbox {
        margin: 10px;
    }
    
    <div class="dx-fieldset">
        <div class="dx-field">
            <div class="dx-field-label">state</div>
            <div class="dx-field-value" data-bind="dxSelectBox:{
                placeholder: 'Select',
                dataSource: selectBoxData,
                displayExpr: 'name',
                value: selectedValue,
                valueExpr: currentExpr
            }"></div>
        </div>
        <div class="dx-field">
            <div class="dx-field-label" data-bind="text: currentExpr"></div>
            <div class="dx-field-value-static"><b data-bind="text: selectedValue"></b></div>
        </div>
    </div>
    <div class="dx-fieldset">
        <div class="dx-field">
            <div class="dx-field-label">valueExpr</div>
            <div class="dx-field-value" data-bind="dxSelectBox: {
                items: ['name', 'capital'],
                value: currentExpr
            }"></div>
        </div>
    </div>
    
    var myViewModel = {
        selectedValue: ko.observable(''),
        currentExpr: ko.observable('name'),
        selectBoxData: new DevExpress.data.DataSource({
            store: [],
            paginate: false
        })
    }
    $.get("/Content/data/states.txt", function (data) {
        for (var i = 0; i < data.length; i++) {
            myViewModel.selectBoxData.store().insert(data[i]);
        }
        myViewModel.selectBoxData.load();
    }, "json");
    ko.applyBindings(myViewModel);
    
    body {
        text-align: center;
    }
    .dx-selectbox {
        margin: 10px;
    }
    
    <div class="dx-fieldset">
        <div class="dx-field">
            <div class="dx-field-label">state</div>
            <div class="dx-field-value" id="mySelectBox"></div>
        </div>
        <div class="dx-field">
            <div class="dx-field-label" id="valueFieldCaption">name</div>
            <div class="dx-field-value-static"><b id="valueField"></b></div>
        </div>
    </div>
    <div class="dx-fieldset">
        <div class="dx-field">
            <div class="dx-field-label">valueExpr</div>
            <div class="dx-field-value" id="exprSelector"></div>
        </div>
    </div>
    
    var selectBoxData = new DevExpress.data.DataSource({
        store: [],
        paginate: false
    });
    $("#mySelectBox").dxSelectBox({
        placeholder: 'Select state',
        dataSource: selectBoxData,
        displayExpr: 'name',
        valueExpr: 'name',
        onValueChanged: function (e) {
            $("#valueField").text($("#mySelectBox").dxSelectBox("instance").option("value"));
        }
    });
    $("#exprSelector").dxSelectBox({
        items: ['name', 'capital'],
        value: 'name',
        onValueChanged: function (e) {
            $("#mySelectBox").dxSelectBox("instance").option("valueExpr", e.value);
            $("#valueFieldCaption").text(e.value);
        }
    });
    $.get("/Content/data/states.txt", function (data) {
        for (var i = 0; i < data.length; i++) {
            selectBoxData.store().insert(data[i]);
        }
        selectBoxData.load();
    }, "json")
    
    body {
        text-align: center;
    }
    .dx-selectbox {
        margin: 10px;
    }
    

    valueChangeAction

    Deprecated

    Use the onValueChanged option instead.

    valueExpr

    Specifies the name of a data source item field whose value is held in the value configuration option.

    Type: String|function
    Default Value: "this"

    If the options value is "this", the widget returns the entire selected object from the value option. Note that the "this" value is not supported by a widget bound to an ODataStore.

    Show Example:
    AngularJS
    Knockout
    jQuery
    <div ng-controller="demoController">
        <div class="dx-fieldset">
            <div class="dx-field">
                <div class="dx-field-label">state</div>
                <div class="dx-field-value" dx-select-box="{
                    placeholder: 'Select',
                    dataSource: selectBoxData,
                    displayExpr: 'name',
                    bindingOptions: {
                        value: 'selectedValue',
                        valueExpr: 'currentExpr'
                    }
                }"></div>
            </div>
            <div class="dx-field">
                <div class="dx-field-label">{{currentExpr}}</div>
                <div class="dx-field-value-static"><b>{{selectedValue}}</b></div>
            </div>
        </div>
        <div class="dx-fieldset">
            <div class="dx-field">
                <div class="dx-field-label">valueExpr</div>
                <div class="dx-field-value" dx-select-box="{
                    items: ['name', 'capital'],
                    bindingOptions: {
                        value: 'currentExpr'
                    }
                }"></div>
            </div>
        </div>
    </div>
    
    var myApp = angular.module('myApp', ['dx']);
    myApp.controller("demoController", function ($scope) {
        $scope.selectedValue = '';
        $scope.currentExpr = 'name';
        $scope.selectBoxData = new DevExpress.data.DataSource({
            store: [],
            paginate: false
        });
        $.get("/Content/data/states.txt", function (data) {
            for (var i = 0; i < data.length; i++) {
                $scope.selectBoxData.store().insert(data[i]);
            }
            $scope.selectBoxData.load();
        }, "json");
    });
    angular.element(document).ready(function () {
        angular.bootstrap(document, ['myApp']);
    });
    
    body {
        text-align: center;
    }
    .dx-selectbox {
        margin: 10px;
    }
    
    <div class="dx-fieldset">
        <div class="dx-field">
            <div class="dx-field-label">state</div>
            <div class="dx-field-value" data-bind="dxSelectBox:{
                placeholder: 'Select',
                dataSource: selectBoxData,
                displayExpr: 'name',
                value: selectedValue,
                valueExpr: currentExpr
            }"></div>
        </div>
        <div class="dx-field">
            <div class="dx-field-label" data-bind="text: currentExpr"></div>
            <div class="dx-field-value-static"><b data-bind="text: selectedValue"></b></div>
        </div>
    </div>
    <div class="dx-fieldset">
        <div class="dx-field">
            <div class="dx-field-label">valueExpr</div>
            <div class="dx-field-value" data-bind="dxSelectBox: {
                items: ['name', 'capital'],
                value: currentExpr
            }"></div>
        </div>
    </div>
    
    var myViewModel = {
        selectedValue: ko.observable(''),
        currentExpr: ko.observable('name'),
        selectBoxData: new DevExpress.data.DataSource({
            store: [],
            paginate: false
        })
    }
    $.get("/Content/data/states.txt", function (data) {
        for (var i = 0; i < data.length; i++) {
            myViewModel.selectBoxData.store().insert(data[i]);
        }
        myViewModel.selectBoxData.load();
    }, "json");
    ko.applyBindings(myViewModel);
    
    body {
        text-align: center;
    }
    .dx-selectbox {
        margin: 10px;
    }
    
    <div class="dx-fieldset">
        <div class="dx-field">
            <div class="dx-field-label">state</div>
            <div class="dx-field-value" id="mySelectBox"></div>
        </div>
        <div class="dx-field">
            <div class="dx-field-label" id="valueFieldCaption">name</div>
            <div class="dx-field-value-static"><b id="valueField"></b></div>
        </div>
    </div>
    <div class="dx-fieldset">
        <div class="dx-field">
            <div class="dx-field-label">valueExpr</div>
            <div class="dx-field-value" id="exprSelector"></div>
        </div>
    </div>
    
    var selectBoxData = new DevExpress.data.DataSource({
        store: [],
        paginate: false
    });
    $("#mySelectBox").dxSelectBox({
        placeholder: 'Select state',
        dataSource: selectBoxData,
        displayExpr: 'name',
        valueExpr: 'name',
        onValueChanged: function (e) {
            $("#valueField").text($("#mySelectBox").dxSelectBox("instance").option("value"));
        }
    });
    $("#exprSelector").dxSelectBox({
        items: ['name', 'capital'],
        value: 'name',
        onValueChanged: function (e) {
            $("#mySelectBox").dxSelectBox("instance").option("valueExpr", e.value);
            $("#valueFieldCaption").text(e.value);
        }
    });
    $.get("/Content/data/states.txt", function (data) {
        for (var i = 0; i < data.length; i++) {
            selectBoxData.store().insert(data[i]);
        }
        selectBoxData.load();
    }, "json")
    
    body {
        text-align: center;
    }
    .dx-selectbox {
        margin: 10px;
    }
    

    visible

    A Boolean value specifying whether or not the widget is visible.

    Type: Boolean
    Default Value: true

    width

    Specifies the width of the widget.

    Type: Number|String|function
    Return Value: Number|String
    The widget width.
    Default Value: undefined

    The option can hold a value of the following types.

    • numeric
      The widget width in pixels.
    • string
      A CSS measurement of the widget width (e.g., "55px", "80%", "auto" and "inherit").
    • function
      The function returning the widget width. For example, see the following code.

      JavaScript
      width: function () { 
          return baseWidth - 10 + "%";
      }