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Happy states

Makes simple state management possible via classList on the <html> element

Situation: you want to have a simple method of styling your page based on the current global state. Like mainMenuOpened, filterToggled, footerNavActive, and so on.

Solution

Happy states! 😎

A small script that manages your pages state via document.documentElement.classlist.

GitHub | NPM | @jelmerdemaat

Try here: jelmerdemaat.github.io/happy-states. Really the only thing this script does is:

  1. Give methods toggle, set, unset, and is for handling your page's state via JavaScript.
  2. Add a click handler to catch state toggling on elements with a given attribute (default: data-state).
  3. Give a possibility to add a callback to a state change.

Which means you can control a state like main-nav-open via HappyStates.set('main-nav-open') in your JavaScript, as well as via a click on an element like this:

<button data-state="main-nav-open">Open main nav</button>

Install

Directly

Include happystates(.min).js somewhere in your document, before the rest of your JavaScript where you initiate this script.

Via npm

npm install --save happy-states

Usage

In your JavaScript:

// When using an npm based build process, import the module:
import HappyStates from 'happy-states';

// Create an instance of HappyStates
const happystates = new HappyStates();

// Optionally, pass a prefix that you would like the classes to have,
// and a custom attribute to act upon when an element is clicked (both optional).

const customhappystates = new HappyStates(
  'is-',
  'data-toggle-state'
);

HappyStates.toggle('menuOpened'); // Toggles class `is-menuOpened` on document
HappyStates.is('menuOpened'); // Returns true
HappyStates.unset('menuOpened'); // Removes class `is-menuOpened` from document
HappyStates.is('menuOpened'); // Returns false
HappyStates.set('menuOpened'); // Sets class `is-menuOpened` on document
HappyStates.toggle('menuOpened'); // Toggles class `is-menuOpened` on document
HappyStates.is('menuOpened'); // Returns false

Parameters

Order Thing Explanation
First prefix What to prefix the classes with. Default: state-
Second attribute What attribute to check for state toggling. Default: data-state

Browser support

This little script (692B minified, 356B gzipped) is supported in all browsers that support Element.classList which is basically every browser. caniuse.com/#feat=classlist

Can I Use screenshot:

Element.classList

Element.classList support

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Makes simple state management possible via classList on the <html> element

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