React CheckBox Props
accessKey
The value of this property will be passed to the accesskey
attribute of the HTML element that underlies the UI component.
activeStateEnabled
The UI component switches to the active state when users press down the primary mouse button. When this property is set to true, the CSS rules for the active state apply. You can change these rules to customize the component.
Use this property when you display the component on a platform whose guidelines include the active state change for UI components.
enableThreeStateBehavior
The CheckBox component supports three states: checked, unchecked, and indeterminate. The following table specifies the relation between the editor's state and its value:
Value | State |
---|---|
null or undefined |
Indeterminate |
true |
Checked |
false |
Unchecked |
If you set enableThreeStateBehavior to true
, users can cycle through CheckBox states in the following order:
Indeterminate → Checked → Unchecked → Indeterminate → ...
If you set enableThreeStateBehavior property to false
, users can only cycle between the checked and unchecked states. Note that the CheckBox can initially appear in the indeterminate state, if you haven't set the value to either true
or false
.
Indeterminate → Checked → Unchecked → Checked → Unchecked → ...
height
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"
,"20vh"
,"80%"
,"inherit"
.Function (deprecated since v21.2)
Refer to the W0017 warning description for information on how you can migrate to viewport units.
isDirty
This property is a read-only flag. You can use it to check if the editor value changed.
- import React, { useRef } from 'react';
- import CheckBox from 'devextreme-react/check-box';
- import Button from 'devextreme-react/button';
- import 'devextreme/dist/css/dx.light.css';
- const App = () => {
- const checkBoxRef = useRef(null);
- const onClick = () => {
- if (this.checkBoxRef.current.instance().option('isDirty')) {
- notify("Do not forget to save changes", "warning", 500);
- }
- };
- return (
- <CheckBox ...
- ref={checkBoxRef}
- >
- </CheckBox>
- <Button ...
- onClick={onClick}
- />
- );
- };
- export default App;
See Also
isValid
See Also
onContentReady
A function that is executed when the UI component is rendered and each time the component is repainted.
Name | Type | Description |
---|---|---|
element |
The UI component's container. It is an HTML Element or a jQuery Element when you use jQuery. |
|
component |
The UI component's instance. |
onDisposing
A function that is executed before the UI component is disposed of.
Name | Type | Description |
---|---|---|
element |
The UI component's container. It is an HTML Element or a jQuery Element when you use jQuery. |
|
component |
The UI component's instance. |
onInitialized
Name | Type | Description |
---|---|---|
element |
The UI component's container. It is an HTML Element or a jQuery Element when you use jQuery. |
|
component |
The UI component's instance. |
- import CheckBox from 'devextreme-react/check-box';
- class App extends React.Component {
- constructor(props) {
- super(props);
- this.saveInstance = this.saveInstance.bind(this);
- }
- saveInstance(e) {
- this.checkBoxInstance = e.component;
- }
- render() {
- return (
- <div>
- <CheckBox onInitialized={this.saveInstance} />
- </div>
- );
- }
- }
See Also
- Get a UI component Instance in React
onOptionChanged
Name | Type | Description |
---|---|---|
value | any |
The modified property's new value. |
previousValue | any |
The UI component's previous value. |
name |
The modified property if it belongs to the first level. Otherwise, the first-level property it is nested into. |
|
fullName |
The path to the modified property that includes all parent properties. |
|
element |
The UI component's container. It is an HTML Element or a jQuery Element when you use jQuery. |
|
component |
The UI component's instance. |
The following example shows how to subscribe to component property changes:
- import React from 'react';
- 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}
- />
- );
- }
onValueChanged
A function that is executed after the UI component's value is changed.
Name | Type | Description |
---|---|---|
value |
The UI component's new value. |
|
previousValue |
The UI component's previous value. |
|
event | Event (jQuery or EventObject) |
The event that caused the function to execute. It is an EventObject or a jQuery.Event when you use jQuery. This field is undefined if the value is changed programmatically. |
element |
The UI component's container. It is an HTML Element or a jQuery Element when you use jQuery. |
|
component |
The UI component's instance. |
rtlEnabled
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
- });
tabIndex
The value of this property will be passed to the tabindex
attribute of the HTML element that underlies the UI component.
validationError
Information on the broken validation rule. Contains the first item from the validationErrors array.
validationMessageMode
Specifies how the message about the validation rules that are not satisfied by this editor's value is displayed.
validationMessagePosition
Specifies the position of a validation message relative to the component. The validation message describes the validation rules that this component's value does not satisfy.
validationStatus
The following table illustrates the validation status indicators:
validationStatus | Indicator |
---|---|
"pending" |
![]() |
"valid" |
![]() |
"invalid" |
![]() |
When you assign "invalid" to validationStatus, you can also use the validationErrors array to set an error message as shown below:
- import React, { useState } from 'react';
- // ...
- function App() {
- const [validationStatus, setValidationStatus] = useState("valid");
- const [validationErrors, setValidationErrors] = useState([]);
- const setInvalidStatus = message => {
- setValidationStatus("invalid");
- setValidationErrors([{ message: message }]);
- }
- return (
- <CheckBox
- validationStatus={validationStatus}
- validationErrors={validationErrors}
- />
- );
- };
- export default App;
value
The CheckBox can be in one of the following states depending on the value property's value.
checked
value istrue
unchecked
value isfalse
indeterminate
value isundefined
ornull
Users can press the Space key to change the value.
width
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"
,"20vw"
,"80%"
,"auto"
,"inherit"
.Function (deprecated since v21.2)
Refer to the W0017 warning description for information on how you can migrate to viewport units.
If you have technical questions, please create a support ticket in the DevExpress Support Center.