broken-disable-link-jump.js

var hashLinks = document.querySelectorAll("a[href^='#']");
[].forEach.call(hashLinks, function (link) {
  link.addEventListener("click", function (event) {
    // Disable jumping around and URL updates
    event.preventDefault();
    // Update the URL only ourselves
    history.pushState({}, "", link.href);
  });
});