cross-wikipedia-active-editors.js

/**
 *  "Active Users" are registered users who have made at least
 *  one edit in the last thirty days.
 */

let apiURI = 'https://meta.wikimedia.org/w/api.php?action=parse&page=List%20of%20Wikipedias&origin=*&format=json'
fetch(apiURI)
  .then(res => res.json())
  .then(data => {
    data = data.parse.text['*']
    let page = document.createElement('html')
    page.innerHTML = data
    let projects = page.querySelectorAll('table tbody tr td:nth-child(10)')
    let total = 0

    projects.forEach(project => {
      total += parseFloat(project.innerText.replace(',', ''))
    })

    return total
  })
  .then(total => console.log(`total of active contributors: ${total}`))

  .catch(error => console.log(error))