What is the vanilla JS version of Jquery's $.getJSON

Question

I need to build a project to get into a JS bootcamp I am applying for. They tell me I may only use vanilla JS, specifically that frameworks and Jquery are not permitted. Up to

Answer 1

Here is the Vanilla JS version for $.getJSON :

var request = new XMLHttpRequest();
request.open('GET', '/my/url', true);

request.onload = function() {
  if (request.status >= 200 && request.status < 400) {
    // Success!
    var data = JSON.parse(request.responseText);
  } else {
    // We reached our target server, but it returned an error

  }
};

request.onerror = function() {
  // There was a connection error of some sort
};

request.send();

Ref: http://youmightnotneedjquery.com/

For JSONP SO already has the answer here

With $.getJSON you can load JSON-encoded data from the server using a GET HTTP request.