JSFiddle - React, Tailwind, and code Playground

HTML

Результат: <span id="result"></span>

CSS

#result {
  font-style: italic;
}

JavaScript

function ipToInt32(ip) {
  return ip.split('.').reverse().map((cv, i) => cv * Math.pow(2, i*8)).reduce((cv, pv) => cv + pv);
}

document.getElementById('result').innerHTML = ipToInt32('128.32.10.1');