strangerthings.js

 var xhttp = new XMLHttpRequest();
 xhttp.onreadystatechange = function() {
     if (xhttp.readyState == 4 && xhttp.status == 200) {
         document.getElementById("demo").innerHTML = xhttp.responseText;
     }
 };

 xhttp.open("POST", "http://app.strangergif.com:8084/gifs", true);
 xhttp.setRequestHeader("Content-type", "application/json");
 xhttp.send('{"phrase":"Hello World"}');