fetch HTML and return list of images along with their text alternatives.

gettextalternatives.js

// haven't tested yet

const jsdom = require('jsdom')
const url = process.argv[2]

jsdom.env(url, (err, window) => {
  const images = Array.from(window.document.querySelectorAll('img[src]'))
  const result = []
  for (let i of images) {
    result.push({
      src: i.src,
      alt: i.hasAttribute('alt') ? i.alt : null
    })
  }
  console.log(JSON.stringify(result, null, 2))
})