parser-pensador.com.js

function parseResponseToDOM (html) {
  var parser = new DOMParser()
  var dom = parser.parseFromString(html, "text/html")
  return {parser, dom}
}

async function getDomFromUrl (url) {
  return fetch(url)
  .then(resp => resp.text())
  .then(parseResponseToDOM)
  .catch(err => console.log(err))
}

const pensadorDom = await getDomFromUrl('https://www.pensador.com/poemas_de_amor/1/')

const phraseBlocks = Array.from(pensadorDom.dom.querySelectorAll('[id*=phrase-block]'))

function getInnerText (domItem, selector='') {
  if (!selector) {
    return domItem.innerText.trim()
  }
  const item = domItem.querySelector(selector)
  return item && item.innerText.trim()
  }
}

function parsePhrases (domItem) {
  return {
    author: getInnerText(domItem, 'span.autor').replace(/\n/g, ''),
    phrase: getInnerText(domItem, 'p.frase')
  }
}

const parsedPhrases = phraseBlocks.map(parsePhrases)