Yes, aftJS supports the omnipresent fetch, which JavaScript programmers love to use to perform HTTP(S) methods (like GET, POST, and so on...).

So, in aftJS you can do something like this:

  var x = fetch('').then(function(r) {
    r.text().then(function(d) {
      for (var k in r.headers._headers) {
        Log(k + ':', r.headers.get(k));

Or use it to call some other REST API, like this:

 fetch('', {
  method: 'post',
  headers: {
    'Accept': 'application/json, text/plain, */*',
    'Content-Type': 'application/json'
  body: JSON.stringify({a: 7, str: 'Some string: &=&'})
 }).then(res => res.json())
  .then(res => Log(res));

Or do pretty much everything you'd do with JavaScript's native fetch function.