Darkmode.js

🌓 Add a dark-mode / night-mode to your website in a few seconds

This library uses the css mix-blend-mode in order to bring Dark-mode to any of your websites. Just copy paste the snippet and you will get a widget to turn on and off the dark-mode. You can also use it without the widget programmatically. The plugin is lightweight, built in VanillaJS. It also uses localstorage by default so your last setting will be remembered !

I have been inspired by this article: https://dev.wgao19.cc/2019-05-04__sun-moon-blending-mode/

✨ Demo

Check out the demo in these websites:

https://darkmodejs.learn.uno
https://tradivegan.com (with custom label)
https://what.toeat.in (with custom label)
https://www.kanbanote.com (without the widget, once logged in)
https://www.sandoche.com (with custom label)

📖 How to use

Darkmode.js is very easy to use, just copy paste the following code or use the npm package.

🚀 Easy way (using the JSDelivr CDN)

Just add this code to your html page:

<script src="https://cdn.jsdelivr.net/npm/darkmode-js@1.3.4/lib/darkmode-js.min.js"></script>
<script>
  new Darkmode().showWidget();
</script>

📦 Using NPM

npm install darkmode-js

Then add the following javascript code:

import Darkmode from 'darkmode-js';

new Darkmode().showWidget();

⚙️ Options

Here are the option availables:

var options = {
  bottom: '64px', // default: '32px'
  right: 'unset', // default: '32px'
  left: '32px', // default: 'unset'
  time: '0.5s', // default: '0.3s'
  mixColor: '#fff', // default: '#fff'
  backgroundColor: '#fff',  // default: '#fff'
  buttonColorDark: '#100f2c',  // default: '#100f2c'
  buttonColorLight: '#fff', // default: '#fff'
  saveInCookies: false, // default: true,
  label: '🌓' // default: ''
}

const darkmode = new Darkmode(options);
darkmode.showWidget();

▶️ Methods

If you don't want to show the widget and enable/disable Darkmode programatically you can use the method toggle(). You can also check if the darkmode is activated with the method isActivated(). See them in action in the following example.

const darkmode =  new Darkmode();
darkmode.toggle();
console.log(darkmode.isActivated()) // will return true

Override style

A CSS class darkmode--activated is added to the body tag when the darkmode is activated. You can take advantage of it to override the style and have a custom style
Use the class darkmode-ignore where you don't want to apply darkmode
You can also add this style: isolation: isolate; in your css, this will also ignore the darkmode.
It is also possible to revert the dark-mode with this style mix-blend-mode: difference;

Examples

.darkmode--activated p, .darkmode--activated li {
  color: #000;
}

.button {
  isolation: isolate;
}

.darkmode--activated .logo {
  mix-blend-mode: difference;
}

<span class="darkmode-ignore">😬<span>

Debug

If it does not work you may have to add the following code, but this will invalidate the classes to override.

.darkmode-layer, .darkmode-toggle {
  z-index: 500;
}

Browser compatibility

This library uses the CSS mix-blend-mode: difference; in order to provide the darkmode. It may not be compatible with all the browsers.

Check the compatibility here: https://caniuse.com/#search=mix-blend-mode

Development

yarn build or npm run build - produces production version of your library under the lib folder
yarn dev or npm run dev - produces development version of your library and runs a watcher
yarn test or npm run test - it runs the tests :)
yarn test:watch or npm run test:watch - same as above but in a watch mode

⭐️ Show your support

Please ⭐️ this repository if this project helped you!

🍺 Buy me a beer

If you like this project, feel free to donate:

Paypal: https://www.paypal.me/kanbanote
Bitcoin: 19JiNZ1LkMaz57tewqJaTg2hQWH4RgW4Yp
Ethereum: 0xded81fa4624e05339924355fe3504ba9587d5419
Monero: 43jqzMquW2q989UKSrB2YbeffhmJhbYb2Yxu289bv7pLRh4xVgMKj5yTd52iL6x1dvCYs9ERg5biHYxMjGkpSTs6S2jMyJn
Motive: MOTIV-25T5-SD65-V7LJ-BBWRD (Get Motive Now: https://motive.network)

chengguangnan/Darkmode.js