Fisarmonica

A simple and accessible vanilla js accordion plugin (<1kb minifed and gzipped)

DEMO

Installation

NPM

npm install fisarmonica --save

Include css and js files

<link rel="stylesheet" media="screen" href="<path-to-lib>/fisarmonica.css" />
<script src="<path-to-lib>/fisarmonica.js"></script>

CDN

Be sure to use the latest version

<link
    rel="stylesheet"
    media="screen"
    href="https://cdn.jsdelivr.net/npm/fisarmonica@1.3.5/dist/fisarmonica.min.css"
/>
<script src="https://cdn.jsdelivr.net/npm/fisarmonica@1.3.5/dist/fisarmonica.min.js"></script>

Prepare the base markup

<dl data-fisarmonica>
    <dt>
        <button>Accordion Title 1</button>
    </dt>
    <dd>
        Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod
        tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim
        veniam, quis nostrud exercitation ullamco laboris nisi ut aliquip ex ea
        commodo consequat.
    </dd>
    <dt>
        <button>Accordion Title 2</button>
    </dt>
    <dd>
        Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod
        tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim
        veniam, quis nostrud exercitation ullamco laboris nisi ut aliquip ex ea
        commodo consequat.
    </dd>
    <dt>
        <button>Accordion Title 3</button>
    </dt>
    <dd>
        Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod
        tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim
        veniam, quis nostrud exercitation ullamco laboris nisi ut aliquip ex ea
        commodo consequat.
    </dd>
</dl>

Initialize the plugin

var fisarmonica = new Fisarmonica();

Options

selector

Type: String Default value: [data-fisarmonica]

The root element selector

keepPanelsOpen

Type: Boolean Default value: false

If set to true all the panels will remain open

theme

Type: Object Default value:

{
  /* Root element */
  fisarmonicaOuterBorderWidth: '3px',
  fisarmonicaInnerBorderWidth: '1px',
  fisarmonicaBorderRadius: '5px',
  fisarmonicaPadding: '1em',
  fisarmonicaBorderColor: 'Gray',
  fisarmonicaBorderColorFocus: 'SteelBlue',
  fisarmonicaInnerBorderColorFocus: 'Gray',

  /* Arrows */
  fisarmonicaArrowWidth: '0.75em',
  fisarmonicaArrowThickness: '3px',
  fisarmonicaArrowColor: 'Gray',
  fisarmonicaArrowColorFocus: 'SteelBlue',
  fisarmonicaArrowColorDisabled: 'Gray',

  /* Buttons */
  fisarmonicaButtonFontFamily: 'inherit',
  fisarmonicaButtonFontSize: 'inherit',
  fisarmonicaButtonFontWeight: 'inherit',
  fisarmonicaButtonColor: 'black',
  fisarmonicaButtonColorFocus: 'black',
  fisarmonicaButtonColorDisabled: 'Grey',
  fisarmonicaButtonBackground: 'white',
  fisarmonicaButtonBackgroundFocus: 'AliceBlue',
  fisarmonicaButtondBackgroundDisabled: 'WhiteSmoke',

  /* Panels */
  fisarmonicaPanelFontFamily: 'inherit',
  fisarmonicaPanelFontSize: 'inherit',
  fisarmonicaPanelFontWeight: 'inherit',
  fisarmonicaPanelColor: 'black',
  fisarmonicaPanelBackground: 'white',
  fisarmonicaPanelTransitionOrigin: 'top',
  fisarmonicaPanelTransitionDuration: '0.15s',
  fisarmonicaPanelTransitionTimingFunction: 'linear'
}

You can ovveride any prop you like. Css styles are set with custom-properties so check browser support

You can also pass your own custom properties as values, to match your site settings

fisarmonicaButtonBackgroundFocus: 'var(--myCustomVar)'

Methods

open

// pass a zero-index array of panels to open ([1,2] => opens 2nd and 3rd panel)
// if no argument is passed all the panels will open

var fisarmonica = new Fisarmonica();
fisarmonica.open([1, 2]);

close

// pass a zero-index array of panels to close ([1,2] => closes 2nd and 3rd panel)
// if no argument is passed all the panels will close

var fisarmonica = new Fisarmonica();
fisarmonica.close([1, 2]);

disable

// pass a zero-index array of panels to disable ([1,2] => disables 2nd and 3rd panel)
// if no argument is passed all the panels will be disabled

var fisarmonica = new Fisarmonica();
fisarmonica.disable([1, 2]);

enable

// pass a zero-index array of panels to enable ([1,2] => enables 2nd and 3rd panel)
// if no argument is passed all the panels will be enabled

var fisarmonica = new Fisarmonica();
fisarmonica.enable([1, 2]);

Keyboard events

• Enter or Space = Expands/Collapses Panel
• Tab = Move to next focusable element
• Shift + Tab = Move to previous focusable element
• ↑ ↓ = Cycle elements when focused
• Home = Focus first element
• End = Focus last element

fisarmonica means accordion in italian 😉

https://it.wikipedia.org/wiki/Fisarmonica