[Javascript] 공인 IP 가져오기

<script>
  const se = document.createElement('script');
  se.src = 'https://ipinfo.io?callback=callback';
  document.body.appendChild(se);
  document.body.removeChild(se);

  function callback(data) {
    document.getElementById('ip').textContent = data.ip;
  }
</script>

//https://joshua-dev-story.blogspot.com/2020/09/javascript-ip.html#toc-54-1

콜백으로 확인가능

$.getJSON("http://ipinfo.io", function(data) {
   $("#ip").val(data.ip);
});

$.get("http://ip-api.com/json", function(data) {
   $("#ip").val(data.query);
});

//api key 없으면 ip만 줌 
$.getJSON("https://extreme-ip-lookup.com/json", function(data) {
   $("#ip").val(data.query);
 });

jQuery 방식