Vue ValidationGroup Methods
This section describes members used to manipulate the widget.
dispose()
Disposes of all the resources allocated to the ValidationGroup instance.
The following code disposes of an ValidationGroup instance that corresponds to the element ID (or reference variable in Angular) and removes the element from the DOM:
jQuery
$("#myValidationGroup").dxValidationGroup("dispose"); $("#myValidationGroup").remove();
Angular
<dx-validation-group #validationGroupVar id="myValidationGroup"></dx-validation-group>
import { ..., ViewChild } from "@angular/core"; import { DxValidationGroupComponent } from "devextreme-angular"; // ... export class AppComponent { @ViewChild("validationGroupVar") validationGroup: DxValidationGroupComponent; removeValidationGroup (e) { this.validationGroup.instance.dispose(); document.getElementById("myValidationGroup").remove(); } }
element()
Gets the root widget element.
An HTML element or a jQuery element when you use jQuery.
getInstance(element)
Gets the instance of a widget found using its DOM node.
The widget's instance.
getInstance is a static method that the widget class supports. The following code demonstrates how to get the ValidationGroup instance found in an element with the myValidationGroup
ID:
// Modular approach import ValidationGroup from "devextreme/ui/validation_group"; ... let element = document.getElementById("myValidationGroup"); let instance = ValidationGroup.getInstance(element) as ValidationGroup; // Non-modular approach let element = document.getElementById("myValidationGroup"); let instance = DevExpress.ui.dxValidationGroup.getInstance(element);
See Also
instance()
Gets the widget's instance. Use it to access other methods of the widget.
This widget's instance.
off(eventName)
Detaches all event handlers from a single event.
The event's name.
The object for which this method is called.
off(eventName, eventHandler)
Detaches a particular event handler from a single event.
The object for which this method is called.
on(eventName, eventHandler)
Subscribes to an event.
The object for which this method is called.
on(events)
Subscribes to events.
Events with their handlers: { "eventName1": handler1, "eventName2": handler2, ...}
The object for which this method is called.
option()
Gets all widget options.
The widget's options.
See Also
- Get and Set Options
- Call Methods: jQuery | Angular | AngularJS | Knockout | Vue | React | ASP.NET MVC
option(optionName)
Gets the value of a single option.
The option's name or full path.
This option's value.
See Also
- Get and Set Options
- Call Methods: jQuery | Angular | AngularJS | Knockout | Vue | React | ASP.NET MVC
option(optionName, optionValue)
Updates the value of a single option.
See Also
- Get and Set Options
- Call Methods: jQuery | Angular | AngularJS | Knockout | Vue | React | ASP.NET MVC
option(options)
Updates the values of several options.
Options with their new values.
See Also
- Get and Set Options
- Call Methods: jQuery | Angular | AngularJS | Knockout | Vue | React | ASP.NET MVC
reset()
Resets the value and validation result of the editors that are included to the current validation group.
validate()
Validates rules of the validators that belong to the current validation group.
The current group's validation result.
As an alternative to this method, you can use the DevExpress.validationEngine.validateGroup(group) function passing the current group as a parameter.
If you have technical questions, please create a support ticket in the DevExpress Support Center.