A simple XHR request

XHR-request.js

function successListener() {  
  var data = JSON.parse(this.responseText);  
  console.log(data);  
}

function failureListener(err) {  
  console.log('Request failed', err);  
}

var request = new XMLHttpRequest();  
request.onload = successListener;  
request.onerror = failureListener;  
request.open('get', './api/some.json', true);  
request.send();

<div id="resultado"></div>

<script>
    var xhttp = new XMLHttpRequest();
    xhttp.open("GET", "https://randomddduser.me/api/?results=3"); xhttp.onload = function() {
    document.getElementById("resultado").innerHTML = this.responseText; };
    xhttp.send();
</script>