Enables a custom element to be included in an iron-form
npm install @polymer/iron-form-element-behavior


IronFormElementBehavior adds a name, value and required properties toiron-form was a type extension), andSee: Documentation.
npm install --save @polymer/iron-form-element-behavior
`$3
`js
import {PolymerElement, html} from '@polymer/polymer';
import {mixinBehaviors} from '@polymer/polymer/lib/legacy/class.js';
import {IronFormElementBehavior} from '@polymer/iron-form-element-behavior/iron-form-element-behavior.js';class SampleElement extends mixinBehaviors([IronFormElementBehavior], PolymerElement) {
static get template() {
return html
;
}
}
customElements.define('sample-element', SampleElement);
``