JavaScript/jQuery CheckBox Options

See Also

• Configure a Widget: Angular | Vue | React | jQuery | AngularJS | Knockout | ASP.NET MVC 5 | ASP.NET Core

The value of this property will be passed to the accesskey attribute of the HTML element that underlies the UI component.

This property is used when the UI component is displayed on a platform whose guidelines include the active state change for UI components.

This property accepts a value of one of the following types:

• Number
  The height in pixels.

• String
  A CSS-accepted measurement of height. For example, "55px", "80%", "inherit".

• Function
  A function returning either of the above. For example:

  JavaScript

  height: function() {
      return window.innerHeight / 1.5;
  }

#checkBoxContainer .dx-checkbox-icon{
    height: 20px;
    width: 20px;
}

See Also

• Knockout Only - Validate a View Model
• validationErrors

Specify this property if the UI component lies within an HTML form that will be submitted.

If you configure the UI component as an ASP.NET MVC 5 Control or a DevExtreme-Based ASP.NET Core Control, use this property to bind the UI component to a model property. If this model property contains Data Annotation validation attributes, you get the client-side validation enabled by default.

See Also

• Get a UI component Instance in Angular | AngularJS | Knockout | Vue | React

The following example shows how to subscribe to component property changes:

$(function() {
    $("#checkBoxContainer").dxCheckBox({
        // ...
        onOptionChanged: function(e) {
            if(e.name === "changedProperty") {
                // handle the property change here
            }
        }
    });
});

<dx-check-box ...
    (onOptionChanged)="handlePropertyChange($event)"> 
</dx-check-box>

import { Component } from '@angular/core'; 

@Component({ 
    selector: 'app-root', 
    templateUrl: './app.component.html', 
    styleUrls: ['./app.component.css'] 
}) 

export class AppComponent { 
    // ...
    handlePropertyChange(e) {
        if(e.name === "changedProperty") { 
            // handle the property change here
        }
    }
}

import { BrowserModule } from '@angular/platform-browser'; 
import { NgModule } from '@angular/core'; 
import { AppComponent } from './app.component'; 
import { DxCheckBoxModule } from 'devextreme-angular'; 

@NgModule({ 
    declarations: [ 
        AppComponent 
    ], 
    imports: [ 
        BrowserModule, 
        DxCheckBoxModule 
    ], 
    providers: [ ], 
    bootstrap: [AppComponent] 
}) 

export class AppModule { }  

<template> 
    <DxCheckBox ...
        @option-changed="handlePropertyChange"
    />            
</template> 

<script> 
import 'devextreme/dist/css/dx.common.css'; 
import 'devextreme/dist/css/dx.light.css'; 
import DxCheckBox from 'devextreme-vue/check-box'; 

export default { 
    components: { 
        DxCheckBox
    }, 
    // ...
    methods: { 
        handlePropertyChange: function(e) {
            if(e.name === "changedProperty") {
                // handle the property change here
            }
        }
    } 
} 
</script> 

import React from 'react'; 
import 'devextreme/dist/css/dx.common.css'; 
import 'devextreme/dist/css/dx.light.css'; 

import CheckBox from 'devextreme-react/check-box'; 

const handlePropertyChange = (e) => {
    if(e.name === "changedProperty") {
        // handle the property change here
    }
}

export default function App() { 
    return ( 
        <CheckBox ...
            onOptionChanged={handlePropertyChange}
        />        
    ); 
} 

When this property is set to true, the UI component text flows from right to left, and the layout of elements is reversed. To switch the entire application/site to the right-to-left representation, assign true to the rtlEnabled field of the object passed to the DevExpress.config(config) method.

DevExpress.config({
    rtlEnabled: true
});

See Also

• Right-to-Left Support Demo: DataGrid | Navigation Widgets | Editors

The value of this property will be passed to the tabindex attribute of the HTML element that underlies the UI component.

See Also

• isValid

The following property 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.

Use the ValidationMessageMode enum to specify this property when the UI component is used as an ASP.NET MVC 5 Control or a DevExtreme-Based ASP.NET Core Control. This enum accepts the following values: Auto and Always.

The following table illustrates the validation status indicators:

validationStatus	Indicator
"pending"
"valid"
"invalid"

The check box can be in one of the following states depending on the value property value.

• checked
  value is true

• unchecked
  value is false

• undetermined
  value is undefined

An end-user can change the UI component value using the Space key.

View Demo

This property accepts a value of one of the following types:

• Number
  The width in pixels.

• String
  A CSS-accepted measurement of width. For example, "55px", "80%", "auto", "inherit".

• Function
  A function returning either of the above. For example:

  JavaScript

  width: function() {
      return window.innerWidth / 1.5;
  }

#checkBoxContainer .dx-checkbox-icon{
    height: 20px;
    width: 20px;
}