const themeBtn = document.getElementById('changeThemeBtn');

if (darkThemeStyle.disabled)
	themeBtn.innerHTML = 'Dark<br>theme';

themeBtn.onclick = function() {
	darkThemeStyle.disabled = !darkThemeStyle.disabled;

	if (localStorage.getItem('theme') !== 'light') {
		themeBtn.innerHTML = 'Dark<br>theme';
		localStorage.setItem('theme', 'light');
	}
	else {
		themeBtn.innerHTML = 'Light<br>theme';
		localStorage.setItem('theme', 'dark');
	}
}