Validator

A widget that is used to validate the associated DevExtreme editors against the defined validation rules.

Included in: dx.web.js, dx.viz-web.js, dx.all.js
Module: ui/validator
Export: default
Type:

Object

Configuration

An object defining configuration options for the Validator widget.

Name Description
adapter

An object that specifies what and when to validate, and how to apply the validation result.

elementAttr

Specifies the attributes to be attached to the widget's root element.

height

Specifies the widget's height.

name

Specifies the editor name to be used in the validation default messages.

onDisposing

A function that is executed before the widget is disposed of.

onInitialized

A function used in JavaScript frameworks to save the widget instance.

onOptionChanged

A function that is executed after a widget option is changed.

onValidated

A function that is executed after a value is validated.

validationGroup

Specifies the validation group the editor will be related to.

validationRules

An array of validation rules to be checked for the editor with which the dxValidator object is associated.

width

Specifies the widget's width.

See Also

Methods

This section describes members used to manipulate the widget.

Name Description
dispose()

Disposes of all the resources allocated to the Validator instance.

element()

Gets the root widget element.

focus()

Sets focus to the editor associated with the current Validator object.

getInstance(element)

Gets the instance of a widget found using its DOM node.

instance()

Gets the widget's instance. Use it to access other methods of the widget.

off(eventName)

Detaches all event handlers from a single event.

off(eventName, eventHandler)

Detaches a particular event handler from a single event.

on(eventName, eventHandler)

Subscribes to an event.

on(events)

Subscribes to events.

option()

Gets all widget options.

option(optionName)

Gets the value of a single option.

option(optionName, optionValue)

Updates the value of a single option.

option(options)

Updates the values of several options.

reset()

Resets the value and validation result of the editor associated with the current Validator object.

resetOption(optionName)

Resets an option to its default value.

validate()

Validates the value of the editor that is controlled by the current Validator object against the list of the specified validation rules.

See Also

Events

This section describes events fired by this widget.

Name Description
disposing

Raised before the widget is disposed of.

initialized

Raised only once, after the widget is initialized.

optionChanged

Raised after a widget option is changed.

validated

Raised after a value is validated.

See Also

Validation Rules

This section lists validation rules that can be used within the dxValidator.

Validation Result

A validation result.

Type:

Object