const pages = Array.prototype.slice.call(document.querySelectorAll('a.page-numbers')) pages.map((page, index) => { const oldUrl = page.getAttribute('href') const patt = /\/[0-9]{1,2}\//; const result = oldUrl.match(patt) const result2 = '/page' + result const url = oldUrl.replace(result, result2) page.setAttribute('href', url) });