lion/packages/radio/README.md
2019-07-24 15:20:19 +02:00

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# Radio
[//]: # 'AUTO INSERT HEADER PREPUBLISH'
`lion-radio` component is a sub-element to be used in [lion-radio-group](../radio-group/) elements. Its purpose is to provide a way for users to check a **single** option amongst a set of choices.
## Features
- Get or set the checked state (boolean) - `choiceChecked()`
- Get or set the value of the choice - `choiceValue()`
- Pre-select an option by setting the `checked` boolean attribute
## How to use
### Installation
```sh
npm i --save @lion/radio
```
```js
import '@lion/radio/lion-radio.js';
```
### Example
```html
<lion-radio name="dinos[]" label="allosaurus" .choiceValue=${'allosaurus'}></lion-radio>
<lion-radio name="dinos[]" label="brontosaurus" .choiceValue=${'brontosaurus'}></lion-radio>
<lion-radio name="dinos[]" label="diplodocus" .choiceValue=${'diplodocus'} checked></lion-radio>
```
- Use this component inside a [lion-radio-group](../radio-group/)
- Make sure that it has a name attribute with appended `[]` for multiple choices.