# @npm-polymer/iron-validatable-behavior

> Provides a behavior for an element that validates user input

Latest version **1.1.2** (published 2017-06-03) · http://polymer.github.io/LICENSE.txt license · 0 weekly downloads

> **Deprecated.** This package is deprecated.

## Install

```sh
npm install @npm-polymer/iron-validatable-behavior
pnpm add @npm-polymer/iron-validatable-behavior
yarn add @npm-polymer/iron-validatable-behavior
bun add @npm-polymer/iron-validatable-behavior
```

## Health

**Score 10/100 (F)** — status: deprecated.

Negative: deprecated.

## Facts

| | |
|---|---|
| Version | 1.1.2 |
| Published | 2017-06-03 |
| First published | 2017-06-03 |
| Weekly downloads | 0 |
| License | http://polymer.github.io/LICENSE.txt |
| TypeScript types | none |
| Module format | CommonJS |
| Dependencies | 2 |
| Known vulnerabilities | 0 |
| Install scripts | no |
| GitHub stars | 7 |
| Maintainers | npm-polymer |
| Keywords | web-components, polymer, iron, behavior |

## Links

- npm: https://www.npmjs.com/package/@npm-polymer/iron-validatable-behavior
- Repository: https://github.com/PolymerElements/iron-validatable-behavior
- Issues: https://github.com/PolymerElements/iron-validatable-behavior/issues
- npm.io page: https://npm.io/package/@npm-polymer/iron-validatable-behavior

## Dependencies (2)

- [@npm-polymer/polymer](https://npm.io/package/@npm-polymer/polymer.md) 2.0.1
- [@npm-polymer/iron-meta](https://npm.io/package/@npm-polymer/iron-meta.md) 1.1.3

## Alternatives

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## Recent versions

- 1.1.2 (latest) — 2017-06-03

## README

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[![Build status](https://travis-ci.org/PolymerElements/iron-validatable-behavior.svg?branch=master)](https://travis-ci.org/PolymerElements/iron-validatable-behavior)

_[Demo and API docs](https://elements.polymer-project.org/elements/iron-validatable-behavior)_


##Polymer.IronValidatableBehavior

`Use Polymer.IronValidatableBehavior` to implement an element that validates user input.
Use the related `Polymer.IronValidatorBehavior` to add custom validation logic to an iron-input.

By default, an `<iron-form>` element validates its fields when the user presses the submit button.
To validate a form imperatively, call the form's `validate()` method, which in turn will
call `validate()` on all its children. By using `Polymer.IronValidatableBehavior`, your
custom element will get a public `validate()`, which
will return the validity of the element, and a corresponding `invalid` attribute,
which can be used for styling.

To implement the custom validation logic of your element, you must override
the protected `_getValidity()` method of this behaviour, rather than `validate()`.
See [this](https://github.com/PolymerElements/iron-form/blob/master/demo/simple-element.html)
for an example.

### Accessibility

Changing the `invalid` property, either manually or by calling `validate()` will update the
`aria-invalid` attribute.

---
_Source: https://npm.io/package/@npm-polymer/iron-validatable-behavior · Machine-readable twin of the npm.io package page. Health data is recomputed on every publish._