aタグをクリックしたときにリロードせずページ遷移できる

movePage.js

document.addEventListener("click", (e) => {
  if(e.target.tagName === "A" && new URL(e.target.href).origin === location.origin) {
    fetch(e.target.href).then((r) =>
      r.text().then((t) => {
        history.pushState(null, null, e.target.href);
        document.documentElement.innerHTML = t;
      })
    );
    e.preventDefault();
  }
});

https://discord.com/channels/1104402025988489299/1114234913777000558/1239570792501477376