window.addEventListener("load", (event) => { // just an example for now function toggleVisible(elem) { // theres better ways todo this var x = document.getElementById(elem); if (x.style.display === "block") { x.style.display = "none"; } else { x.style.display = "block"; } } document.getElementById("toggle-customise-notifications").onclick = function () { toggleVisible("notification-customisation"); }; });