Bootstrap Darkmode


This project provides a stylesheet and two scripts that allow you to implement a dark theme on your website.
It is initially loaded based on user preference, can be toggled via a switch, and is saved via localStorage.

You can view the test page with all default bootstrap components in light and dark
(thanks to juzraai!).

If you are using Angular, check out ng-bootstrap-darkmode.

Usage

$3

Install the npm package:

``sh
$ npm install bootstrap-darkmode
$ yarn add bootstrap-darkmode
$ pnpm install bootstrap-darkmode
`

Include the stylesheet, e.g. in styles.scss:

`scss
@import "~bootstrap-darkmode/scss/darktheme";
`

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1. Put the stylesheet link in . Do not forget to add bootstrap.

`html








`

2. Load the theme script as the first thing in .

`html



`

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1. Clone this repo.
2. Run npm build.
3. Find darktheme.css and theme.js in the dist/ directory.
4. Follow the steps for unpkg.com, but replace the links with whatever local paths you put the files in.

Setup

> If you are using ng-bootstrap-darkmode,
> you can skip this section entirely.
> It comes with its own JavaScript implementation that is used very differently.

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ES module import:

`js
import {ThemeConfig, writeDarkSwitch} from 'bootstrap-darkmode';
`

Browser:

`js
const bootstrapDarkmode = window['bootstrap-darkmode'];
const ThemeConfig = bootstrapDarkmode.ThemeConfig;
const writeDarkSwitch = bootstrapDarkmode.writeDarkSwitch;
`

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As soon as possible after , initialize the config and load the theme:

`js
const themeConfig = new ThemeConfig();
// place customizations here
themeConfig.initTheme();
`

Loading the theme early shortens the time until the white default background becomes dark.

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If you want to use the default dark switch, load the switch script and add the element using this code:

`js
// this will write the html to the document and return the element.
const darkSwitch = writeDarkSwitch(themeConfig);
`

Configuration

Bootstrap Darkmode can be configured regarding both colors and the way the JavaScript helper behaves.

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Many colors can be changed via SCSS variables, similar to how Bootstrap allows changing the theme.
You can find all variables in _variables.scss.
To change them, just put a new value before importing darktheme.scss.

`scss
$dark-body-bg: #111;

@import "~bootstrap-darkmode/scss/darktheme";
`

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You can listen to theme changes by registering a callback with themeChangeHandlers:

`js
config.themeChangeHandlers.push(theme => console.log(using theme: ${theme}));
`

To change the way the theme is persisted, you can change the loadTheme and saveTheme functions:

`js
themeConfig.loadTheme = () => {
// custom logic
return 'dark';
};

themeConfig.saveTheme = theme => {
// custom logic
console.log(theme);
};
``