web-scraping-in-2017_captcha.js

if (await tab.isVisible(".captchaImage")) {
  // Get the URL of the generated CAPTCHA image
  // Note that we could also get its base64-encoded value and solve it too
  const captchaImageLink = await tab.evaluate((arg, callback) => {
    callback(null, $(".captchaImage").attr("src"))
  })
  
  // Make a call to a CAPTCHA solving service
  const captchaAnswer = await buster.solveCaptchaImage(captchaImageLink)
  
  // Fill the form with our solution
  await tab.fill(".captchaForm", { "captcha-answer": captchaAnswer }, { submit: true })
}