JSFiddle - React, Tailwind, and code Playground

HTML

<script src="http://www.patrick-wied.at/static/heatmapjs/assets/js/heatmap.min.js"></script>

JavaScript

var dataURL = [
"https://acs.leagueoflegends.com/v1/stats/game/TRLH3/1001380673/timeline?gameHash=ee3b8fd05dd64784",
"https://acs.leagueoflegends.com/v1/stats/game/TRLH3/1001380609/timeline?gameHash=9dd207ff3ebfd598",
"https://acs.leagueoflegends.com/v1/stats/game/TRLH3/1001380641/timeline?gameHash=828ef9a4dd73bd08"
];

function test(url) {
  return $.ajax({
    url:url,
    dataType:'jsonp',
    error: function (parsedjson, textStatus, errorThrown) {
      $('body').append(
      "<b>ERROR</b> </br> parsedJson status: " + parsedjson.status + '</br>' + 
      "errorStatus: " + textStatus + '</br>' + 
      "errorThrown: " + errorThrown + '</br></br>' + 
      "URL: " + url + "<br></br>");
    },
    success : function(data) {
      $('body').append(
      "<b>SUCCESS</b> </br>" +
      "URL: " + url + "</br></br>"); 
    }
});
}

(function iterateUrls() {
  var proxyUrl = 'https://jsonp.afeld.me/';
  var u = dataURL.shift();
  if(!u) { return; }
  var url = proxyUrl + '?url=' + encodeURIComponent(u) + '&callback=?';
  setTimeout(function() { 
    test(url).then(function() { iterateUrls(); });
  }, 1000);
})();