Recount-Server/web/static/index.js

function say_hello() {
    console.log("Hello World");
}

function register_nav_links() {
    var navAnchors = document.querySelectorAll("nav a");

    navAnchors.forEach(function (a_el) {
        a_el.addEventListener("click", nav_a_click);
    });
}

function nav_a_click(event) {
    var active_anchor = document.querySelector("nav a.active");
    active_anchor.classList.remove("active");

    var clicked = event.target;
    clicked.classList.add("active");
}

export {say_hello, register_nav_links};