https://visithighworth.co.uk/assets/js/accordion.js

1const accordionTitles = document.querySelectorAll(".accordionTitle");
2
3accordionTitles.forEach((accordionTitle) => {
4  accordionTitle.addEventListener("click", () => {
5    if (accordionTitle.classList.contains("is-open")) {
6      accordionTitle.classList.remove("is-open");
7    } else {
8      const accordionTitlesWithIsOpen = document.querySelectorAll(".is-open");
9      accordionTitlesWithIsOpen.forEach((accordionTitleWithIsOpen) => {
10        accordionTitleWithIsOpen.classList.remove("is-open");
11      });
12      accordionTitle.classList.add("is-open");
13    }
14  });
15});