Set canonical to match pagination if using Webflow pagination

set-canonical-if-pagination.js

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software and associated documentation files (the "Software"), to deal in the Software
without restriction, including without limitation the rights to use, copy, modify, merge,
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to whom the Software is furnished to do so, subject to the following conditions:
The above copyright notice and this permission notice shall be included in all copies or
substantial portions of the Software.
THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING
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*/

const canonical = document.querySelector('link[rel="canonical"]');
const urlParams = new URLSearchParams(window.location.search);
const paginationParam = Array.from(urlParams.entries()).find(([key]) =>
  /^[a-z0-9]{8}_page$/.test(key)
);

if (paginationParam) {
  const canonical = document.querySelector('link[rel="canonical"]');
  canonical.href = `${canonical.href}?${paginationParam.join("=")}`;
}