storybook/examples/html-kitchen-sink/stories/addon-knobs.stories.js

import { storiesOf } from '@storybook/html';
import { action } from '@storybook/addon-actions';

import {
  array,
  boolean,
  button,
  color,
  date,
  select,
  withKnobs,
  text,
  number,
} from '@storybook/addon-knobs/html';

storiesOf('Addons|Knobs', module)
  .addDecorator(withKnobs)
  .add('Simple', () => {
    const name = text('Name', 'John Doe');
    const age = number('Age', 44);
    const content = `I am ${name} and I'm ${age} years old.`;

    return `<div>${content}</div>`;
  })
  .add('All knobs', () => {
    const name = text('Name', 'Jane');
    const stock = number('Stock', 20, {
      range: true,
      min: 0,
      max: 30,
      step: 5,
    });
    const fruits = {
      apples: 'Apple',
      bananas: 'Banana',
      cherries: 'Cherry',
    };
    const fruit = select('Fruit', fruits, 'apple');
    const price = number('Price', 2.25);

    const colour = color('Border', 'deeppink');
    const today = date('Today', new Date('Jan 20 2017 GMT+0'));
    const items = array('Items', ['Laptop', 'Book', 'Whiskey']);
    const nice = boolean('Nice', true);

    const stockMessage = stock
      ? `I have a stock of ${stock} ${fruit}, costing &dollar;${price} each.`
      : `I'm out of ${fruit}${nice ? ', Sorry!' : '.'}`;

    const salutation = nice ? 'Nice to meet you!' : 'Leave me alone!';
    const dateOptions = { year: 'numeric', month: 'long', day: 'numeric', timeZone: 'UTC' };

    button('Arbitrary action', action('You clicked it!'));

    const style = `border: 2px dotted ${colour}; padding: 8px 22px; border-radius: 8px`;

    return `<div style="${style}">
        <h1>My name is ${name},</h1>
        <h3>today is ${new Date(today).toLocaleDateString('en-US', dateOptions)}</h3>
        <p>${stockMessage}</p>
        <p>Also, I have:</p>
        <ul>${items.map(item => `<li>${item}</li>`).join('')}</ul>
        <p>${salutation}</p>
      </div>
    `;
  });