Angular ValidationGroup Properties

An object defining configuration properties for the ValidationGroup UI component.

See Also
jQuery
Angular
Vue
React

elementAttr

Specifies the global attributes to be attached to the UI component's container element.

Selector: dxo-element-attr
Type:

Object

Default Value: {}

jQuery
$(function(){
    $("#validationGroupContainer").dxValidationGroup({
        // ...
        elementAttr: {
            id: "elementId",
            class: "class-name"
        }
    });
});
Angular
HTML
TypeScript
<dx-validation-group ...
    [elementAttr]="{ id: 'elementId', class: 'class-name' }">
</dx-validation-group>
import { DxValidationGroupModule } from "devextreme-angular";
// ...
export class AppComponent {
    // ...
}
@NgModule({
    imports: [
        // ...
        DxValidationGroupModule
    ],
    // ...
})
Vue
App.vue
<template>
    <DxValidationGroup ...
        :element-attr="validationGroupAttributes">
    </DxValidationGroup>
</template>

<script>
import DxValidationGroup from 'devextreme-vue/validation-group';

export default {
    components: {
        DxValidationGroup
    },
    data() {
        return {
            validationGroupAttributes: {
                id: 'elementId',
                class: 'class-name'
            }
        }
    }
}
</script>
React
App.js
import React from 'react';

import ValidationGroup from 'devextreme-react/validation-group';

class App extends React.Component {
    validationGroupAttributes = {
        id: 'elementId',
        class: 'class-name'
    }

    render() {
        return (
            <ValidationGroup ...
                elementAttr={this.validationGroupAttributes}>
            </ValidationGroup>
        );
    }
}
export default App;

height

Specifies the UI component's height.

Type:

Number

|

String

|

Function

Return Value:

Number

|

String

The UI component's height.

Default Value: undefined

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.

onDisposing

A function that is executed before the UI component is disposed of.

Type:

Function

Function parameters:
e:

DisposingEvent

Information about the event.

Object structure:
Name Type Description
element

HTMLElement | jQuery

The UI component's container. It is an HTML Element or a jQuery Element when you use jQuery.
component

ValidationGroup

The UI component's instance.
Default Value: null

onInitialized

A function used in JavaScript frameworks to save the UI component instance.

Type:

Function

Function parameters:
e:

InitializedEvent

Information about the event.

Object structure:
Name Type Description
element

HTMLElement | jQuery

The UI component's container. It is an HTML Element or a jQuery Element when you use jQuery.
component

ValidationGroup

The UI component's instance.
Default Value: null

Angular
app.component.html
app.component.ts
<dx-validation-group ...
    (onInitialized)="saveInstance($event)">
</dx-validation-group>
import { Component } from "@angular/core";
import ValidationGroup from "devextreme/ui/data_grid";
// ...
export class AppComponent {
    validationGroupInstance: ValidationGroup;
    saveInstance (e) {
        this.validationGroupInstance = e.component;
    }
}
Vue
App.vue (Options API)
App.vue (Composition API)
<template>
    <div>
        <DxValidationGroup ...
            @initialized="saveInstance">
        </DxValidationGroup>
    </div>
</template>

<script>
import DxValidationGroup from 'devextreme-vue/validation-group';

export default {
    components: {
        DxValidationGroup
    },
    data: function() {
        return {
            validationGroupInstance: null
        };
    },
    methods: {
        saveInstance: function(e) {
            this.validationGroupInstance = e.component;
        }
    }
};
</script>
<template>
    <div>
        <DxValidationGroup ...
            @initialized="saveInstance">
        </DxValidationGroup>
    </div>
</template>

<script setup>
import DxValidationGroup from 'devextreme-vue/validation-group';

let validationGroupInstance = null;

const saveInstance = (e) => {
    validationGroupInstance = e.component;
}
</script>
React
App.js
import ValidationGroup from 'devextreme-react/validation-group';

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

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

    saveInstance(e) {
        this.validationGroupInstance = e.component;
    }

    render() {
        return (
            <div>
                <ValidationGroup onInitialized={this.saveInstance} />
            </div>
        );
    }
}
See Also
jQuery
  • Get a UI component Instance in jQuery
Angular
  • Get a UI component Instance in Angular
Vue
  • Get a UI component Instance in Vue
React
  • Get a UI component Instance in React

onOptionChanged

A function that is executed after a UI component property is changed.

Type:

Function

Function parameters:
e:

OptionChangedEvent

Information about the event.

Object structure:
Name Type Description
value any

The modified property's new value.
previousValue any

The UI component's previous value.
name

String

The modified property if it belongs to the first level. Otherwise, the first-level property it is nested into.
fullName

String

The path to the modified property that includes all parent properties.
element

HTMLElement | jQuery

The UI component's container. It is an HTML Element or a jQuery Element when you use jQuery.
component

ValidationGroup

The UI component's instance.
Default Value: null

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

jQuery
index.js
$(function() {
    $("#validationGroupContainer").dxValidationGroup({
        // ...
        onOptionChanged: function(e) {
            if(e.name === "changedProperty") {
                // handle the property change here
            }
        }
    });
});
Angular
app.component.html
app.component.ts
app.module.ts
<dx-validation-group ...
    (onOptionChanged)="handlePropertyChange($event)"> 
</dx-validation-group>
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 { DxValidationGroupModule } from 'devextreme-angular'; 

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

export class AppModule { }
Vue
App.vue
<template> 
    <DxValidationGroup ...
        @option-changed="handlePropertyChange"
    />            
</template> 

<script>  
import 'devextreme/dist/css/dx.light.css'; 
import DxValidationGroup from 'devextreme-vue/validation-group'; 

export default { 
    components: { 
        DxValidationGroup
    }, 
    // ...
    methods: { 
        handlePropertyChange: function(e) {
            if(e.name === "changedProperty") {
                // handle the property change here
            }
        }
    } 
} 
</script>
React
App.js
import React from 'react';  
import 'devextreme/dist/css/dx.light.css'; 

import ValidationGroup from 'devextreme-react/validation-group'; 

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

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

width

Specifies the UI component's width.

Type:

Number

|

String

|

Function

Return Value:

Number

|

String

The UI component's width.

Default Value: undefined

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.