const themeBtn = document.getElementById('changeThemeBtn'); const themeLabel = themeBtn.childNodes[0]; if (darkThemeStyle.disabled) themeLabel.innerText = 'Dark'; themeBtn.onclick = function() { darkThemeStyle.disabled = !darkThemeStyle.disabled; if (localStorage.getItem('theme') !== 'light') { themeLabel.innerText = 'Dark'; localStorage.setItem('theme', 'light'); } else { themeLabel.innerText = 'Light'; localStorage.setItem('theme', 'dark'); } }