JavaScript/jQuery Validator Methods
This section describes members used to manipulate the widget.
dispose()
Disposes of all the resources allocated to the Validator instance.
The following code disposes of an Validator instance that corresponds to the element ID (or reference variable in Angular) and removes the element from the DOM:
jQuery
$("#myValidator").dxValidator("dispose"); $("#myValidator").remove();
Angular
<dx-validator #validatorVar id="myValidator"></dx-validator>
import { ..., ViewChild } from "@angular/core"; import { DxValidatorComponent } from "devextreme-angular"; // ... export class AppComponent { @ViewChild("validatorVar") validator: DxValidatorComponent; removeValidator (e) { this.validator.instance.dispose(); document.getElementById("myValidator").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 Validator instance found in an element with the myValidator
ID:
// Modular approach import Validator from "devextreme/ui/validator"; ... let element = document.getElementById("myValidator"); let instance = Validator.getInstance(element) as Validator; // Non-modular approach let element = document.getElementById("myValidator"); let instance = DevExpress.ui.dxValidator.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 editor associated with the current Validator object.
Use this method to "refresh" the editor controlled by the current Validator object. As a result, the editor's value becomes undefined, without validation errors, as it was before validating the editor.
validate()
Validates the value of the editor that is controlled by the current Validator object against the list of the specified validation rules.
The validation result.
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