JavaScript/jQuery Validator Methods
This section describes members used to manipulate the UI component.
dispose()
Disposes of all the resources allocated to the Validator instance.
After calling this method, remove the DOM element associated with the UI component:
$("#myValidator").dxValidator("dispose");
$("#myValidator").remove();Use this method only if the UI component was created with jQuery or pure JavaScript. In Angular, Vue, and React, use conditional rendering:
Angular
<dx-validator ...
*ngIf="condition">
</dx-validator>Vue
<template>
<DxValidator ...
v-if="condition">
</DxValidator>
</template>
<script>
import DxValidator from 'devextreme-vue/validator';
export default {
components: {
DxValidator
}
}
</script>React
import React from 'react';
import Validator from 'devextreme-react/validator';
function DxValidator(props) {
if (!props.shouldRender) {
return null;
}
return (
<Validator ... >
</Validator>
);
}
class App extends React.Component {
render() {
return (
<DxValidator shouldRender="condition" />
);
}
}
export default App;See Also
element()
Gets the root UI component element.
An HTML element or a jQuery element when you use jQuery.
getInstance(element)
Gets the instance of a UI component found using its DOM node.
The UI component's instance.
getInstance is a static method that the UI component 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 UI component's instance. Use it to access other methods of the UI component.
This UI component'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(optionName)
Gets the value of a single property.
The property's name or full path.
This property's value.
option(options)
Updates the values of several properties.
Options with their new values.
reset()
Resets the value and validation result of the editor associated with the current Validator object.
resetOption(optionName)
Resets a property to its default value.
A property's name.
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.