tabler/pages/assets/js/index.js

// Setting items
const items = {
	"menu-position": { localStorage: "tablerMenuPosition", default: "top" },
	"menu-behavior": { localStorage: "tablerMenuBehavior", default: "sticky" },
	"container-layout": {
		localStorage: "tablerContainerLayout",
		default: "boxed",
	},
}

// Theme config
const config = {}
for (const [key, params] of Object.entries(items)) {
	const lsParams = localStorage.getItem(params.localStorage)
	config[key] = lsParams ? lsParams : params.default
}

// Parse url params
const parseUrl = () => {
	const search = window.location.search.substring(1)
	const params = search.split("&")

	for (let i = 0; i < params.length; i++) {
		const arr = params[i].split("=")
		const key = arr[0]
		const value = arr[1]

		if (!!items[key]) {
			// Save to localStorage
			localStorage.setItem(items[key].localStorage, value)

			// Update local variables
			config[key] = value
		}
	}
}

// Toggle form controls
const toggleFormControls = (form) => {
	for (const [key, params] of Object.entries(items)) {
		const elem = form.querySelector(
			`[name="settings-${key}"][value="${config[key]}"]`,
		)

		if (elem) {
			elem.checked = true
		}
	}
}

// Submit form
const submitForm = (form) => {
	// Save data to localStorage
	for (const [key, params] of Object.entries(items)) {
		// Save to localStorage
		const value = form.querySelector(`[name="settings-${key}"]:checked`).value
		localStorage.setItem(params.localStorage, value)

		// Update local variables
		config[key] = value
	}

	window.dispatchEvent(new Event("resize"))

	new bootstrap.Offcanvas(form).hide()
}

// Parse url
parseUrl()

// Elements
const form = document.querySelector("#offcanvasSettings")

// Toggle form controls
if (form) {
	form.addEventListener("submit", function (e) {
		e.preventDefault()

		submitForm(form)
	})

	toggleFormControls(form)
}