mind-overflow-website-ghost.../assets/js/scripts/get-headers-list.js

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let headers;
let sidebarLinks;
$(document).ready(function () {
headers = $(".mind-post_content h2, .mind-post_content h3").toArray();
const sidebar = $("#mind-post_sidebar-left");
for (let i = 0; i < headers.length; i++) {
const currentHeader = headers[i];
const headerText = $(currentHeader).text();
const headerId = $(currentHeader).attr("id");
const headerType = $(currentHeader).prop("nodeName").toLowerCase();
// <h2> <a href="header-linke"> Header Name </a> </h2>
const newLine = "<" + headerType + "> <a href=\"#" + headerId + "\">" + headerText + "</a> </" + headerType + ">";
sidebar.append(newLine);
}
sidebarLinks = $("#mind-post_sidebar-left a").toArray();
});
$(function () {
$(window).scroll(function () {
let bottomScroll = $(window).scrollTop() + ($(window).height() / 2);
let found = false;
for (let i = headers.length - 1; i >= 0; i--) {
const currentHeader = headers[i];
const currentSidebarLink = sidebarLinks[i];
$(currentSidebarLink).removeClass("current");
const headerVPPosition = $(currentHeader).offset().top;
if (!found && bottomScroll > headerVPPosition) {
$(currentSidebarLink).addClass("current");
found = true;
}
}
});
});