Как с помощью JS определить ip пользователя?

fetch('https://ipapi.co/json/') 
  .then(d => d.json()) 
  .then(d => document.querySelector('#ip').innerHTML = d.ip);

<div id="ip"></div>

function findIP(onNewIP) { 
  var myPeerConnection = window.RTCPeerConnection || window.mozRTCPeerConnection || window.webkitRTCPeerConnection; 
  var pc = new myPeerConnection({ 
      iceServers: [] 
    }), 
    noop = function() {}, 
    localIPs = {}, 
    ipRegex = /([0-9]{1,3}(\.[0-9]{1,3}){3}|[a-f0-9]{1,4}(:[a-f0-9]{1,4}){7})/g, 
    key; 
 
  function ipIterate(ip) { 
    if (!localIPs[ip]) onNewIP(ip); 
    localIPs[ip] = true; 
  } 
  pc.createDataChannel(""); 
  pc.createOffer(function(sdp) { 
    sdp.sdp.split('\n').forEach(function(line) { 
      if (line.indexOf('candidate') < 0) return; 
      line.match(ipRegex).forEach(ipIterate); 
    }); 
    pc.setLocalDescription(sdp, noop, noop); 
  }, noop); 
  pc.onicecandidate = function(ice) { 
    if (!ice || !ice.candidate || !ice.candidate.candidate || !ice.candidate.candidate.match(ipRegex)) return; 
    ice.candidate.candidate.match(ipRegex).forEach(ipIterate); 
  }; 
} 
 
 
 
var ul = document.createElement('ul'); 
ul.textContent = 'Ваш IP: ' 
document.body.appendChild(ul); 
 
function addIP(ip) { 
  console.log('Ваш IP: ', ip); 
  var li = document.createElement('li'); 
  li.textContent = ip; 
  ul.appendChild(li); 
} 
 
findIP(addIP);