To process a new CheckBox value, you need to handle the value change event. If the handling function is not going to be changed during the lifetime of the UI component, assign it to the onValueChanged property when you configure the UI component.

jQuery

JavaScript

$(function() {
    $("#checkBoxContainer").dxCheckBox({
        onValueChanged: function (e) {
            const previousValue = e.previousValue;
            const newValue = e.value;
            // Event handling commands go here
        }
    });
});

Angular

HTML

TypeScript

<dx-check-box
    [(value)]="checkBox_value"
    (onValueChanged)="handleValueChange($event)">
</dx-check-box>

import { DxCheckBoxModule } from "devextreme-angular";
// ...
export class AppComponent {
    checkBox_value = undefined;

    handleValueChange (e) {
        const previousValue = e.previousValue;
        const newValue = e.value;
        // Event handling commands go here
    }
}
@NgModule({
    imports: [
        // ...
        DxCheckBoxModule
    ],
    // ...
})

Vue

App.vue

<template>
    <DxCheckBox
        v-model:value="checkBox_value"
        @value-changed="handleValueChange"
    />
</template>

<script>
import 'devextreme/dist/css/dx.light.css';

import DxCheckBox from 'devextreme-vue/check-box';

export default {
    components: {
        DxCheckBox
    },
    data() {
        return {
            checkBox_value: undefined
        };
    },
    methods: {
        handleValueChange(e) {
            const previousValue = e.previousValue;
            const newValue = e.value;
            // Event handling commands go here
        }
    }
}
</script>

React

App.js

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

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

class App extends React.Component {
    constructor(props) {
        super(props);

        this.state = {
            checkBox_value: undefined
        };

        this.handleValueChange = this.handleValueChange.bind(this);
    }

    handleValueChange(e) {
        const previousValue = e.previousValue;
        const newValue = e.value;
        // Event handling commands go here

        this.setState({
            checkBox_value: newValue
        });
    }

    render() {
        return (
            <CheckBox
                value={this.state.checkBox_value}
                onValueChanged={this.handleValueChange}
            />
        );
    }
}
export default App;

If you are going to change event handlers at runtime, or if you need to attach several handlers to the value change event, subscribe to this event using the on(eventName, eventHandler) method. This approach is more typical of jQuery.

JavaScript

const valueChangedHandler1 = function (e) {
    const previousValue = e.previousValue;
    const newValue = e.value;
    // First handler of the "valueChanged" event
};

const valueChangedHandler2 = function (e) {
    const previousValue = e.previousValue;
    const newValue = e.value;
    // Second handler of the "valueChanged" event
};

$("#checkBoxContainer").dxCheckBox("instance")
    .on("valueChanged", valueChangedHandler1)
    .on("valueChanged", valueChangedHandler2);

General Information

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Web

Controls and Extensions

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Mobile

Enterprise and Analytic Tools

End-User Documentation

General Information

.NET Subscription

Common Tools

Quality Assurance and Productivity

Desktop

Controls

Tools

Frameworks and Libraries

Web

Controls and Extensions

Tools

Maintenance Mode

Mobile

Enterprise and Analytic Tools

End-User Documentation

JavaScript/jQuery CheckBox - Handle the Value Change Event

jQuery

Angular

Vue

React

See Also