CodeAPI

RequiredMixin

Provides functionality for input elements can be required to have a value.

Table of Contents

PROPERTIES

?
Store values associated with an object.
requiredSets or gets whether an input element is required to have a value.

required

Sets or gets whether an input element is required to have a value.

Description

Setting the required property to true causes the element to be invalid if it doesn't contain a value. Setting it to false allows the element to be valid even if it doesn't contain a value. The validity of the element can be checked using its validity property.

Getting the value of the required property returns whether the element is required.

You can also set an input element to be required by using the element's Settings pane in the Editor.

See Also

validity

Syntax

get required(): boolean
set required(value: boolean): void
TYPE
?
The kind of data the property stores.
boolean

Examples

Set an element to be required

$w("#myElement").required = true;

Get whether an element is required

let isRequired = $w("#myElement").required; // true