npm install react-radio-group

Then either import {RadioGroup, Radio} from 'react-radio-group' or add node_modules/react-radio-group/umd/index.js into your HTML file (exports the RadioGroup global which contains both, the RadioGroup and Radio component.).

This is your average radio buttons group:

<form>
  <input type="radio" name="fruit" value="apple" />Apple
  <input type="radio" name="fruit" value="orange" />Orange
  <input type="radio" name="fruit" value="watermelon" />Watermelon
</form>

A few problems:

• Repetitive fields (name, type, checked, onChange).
• Hard to set the checked value. You need to put e.g. checked={'apple' === this.state.selectedFruitName} on every input.
• Hard to retrieve the selected value.

Here's a better version (full example here)

<RadioGroup name="fruit" selectedValue={this.state.selectedValue} onChange={this.handleChange}>
  <Radio value="apple" />Apple
  <Radio value="orange" />Orange
  <Radio value="watermelon" />Watermelon
</RadioGroup>

Repetitive fields are either lifted onto the RadioGroup wrapper or already implicitly set on the Radio component, which is a simple wrapper around the radio input.

Exposes 5 optional props:

• name: String: what you'd normally put on the radio inputs themselves.
• selectedValue: String | Number | Boolean: the currently selected value. This will be used to compare against the values on the Radio components to select the right one.
• onChange: Function: will be passed the newly selected value.
• Component: String | React Component: defaults to "div", defines what tag or component is used for rendering the RadioGroup
• children: Node: define your Radios and any other components. Each Radio component (a thin wrapper around input) within a RadioGroup will have some fields like type, name and checked prefilled.

Any prop you pass onto it will be transferred to the actual input under the hood. Radio components cannot be used outside a RadioGroup

MIT