51 lines
1.5 KiB
JavaScript
51 lines
1.5 KiB
JavaScript
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/*!
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* Color mode toggler for Bootstrap's docs (https://getbootstrap.com/)
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* Copyright 2011-2024 The Bootstrap Authors
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* Licensed under the Creative Commons Attribution 3.0 Unported License.
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* Modified to work with a simpler checkbox toggle
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*/
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(() => {
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'use strict'
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const getStoredTheme = () => localStorage.getItem('theme')
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const setStoredTheme = theme => localStorage.setItem('theme', theme)
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const getPreferredTheme = () => window.matchMedia('(prefers-color-scheme: dark)').matches ? 'dark' : 'light'
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const getStoredPreferredTheme = () => {
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const storedTheme = getStoredTheme()
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if (storedTheme) {
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return storedTheme
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}
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return getPreferredTheme()
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}
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const setTheme = theme => {
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if (theme === 'auto') {
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document.documentElement.setAttribute('data-bs-theme', getPreferredTheme())
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} else {
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document.documentElement.setAttribute('data-bs-theme', theme)
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}
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}
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setTheme(getStoredPreferredTheme())
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window.matchMedia('(prefers-color-scheme: dark)').addEventListener('change', () => {
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const storedTheme = getStoredTheme()
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if (storedTheme !== 'light' && storedTheme !== 'dark') {
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setTheme(getStoredPreferredTheme())
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}
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})
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window.addEventListener('DOMContentLoaded', () => {
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const toggle = document.querySelector('#bd-theme')
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toggle.checked = getStoredTheme() === 'dark'
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toggle.addEventListener('change', (event) => {
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const theme = event.currentTarget.checked ? 'dark' : 'light'
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setStoredTheme(theme)
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setTheme(theme)
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event.currentTarget.focus()
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})
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})
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})()
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