Method replace

packages/foliate-js/epub.js:1001–1002

(el, attr)

      // replace hrefs (excluding anchors)
      // TODO: srcset?
      const replace = async (el, attr) =>
        el.setAttribute(attr, await this.loadHref(el.getAttribute(attr), href, parents));
      for (const el of doc.querySelectorAll("link[href]")) await replace(el, "href");
      for (const el of doc.querySelectorAll("[src]")) await replace(el, "src");
      for (const el of doc.querySelectorAll("[poster]")) await replace(el, "poster");