// Initalizes map
var mymap = L.map('mapid').setView([51.505, -0.09], 13);

// Sets the default view of the map
mymap.setView(new L.LatLng(38.1711269, -97.5383369), 5);

// Sets the tile layer from Mapbox
L.tileLayer('https://api.mapbox.com/styles/v1/brandonyates/cj5tvlwng020z2qr7ws0ylg1o/tiles/256/{z}/{x}/{y}?access_token=pk.eyJ1IjoiYnJhbmRvbnlhdGVzIiwiYSI6ImNpcTl3a3AzbDAxbmhmeW0xaGYwbmIwNmQifQ.ItJcFDmazEMy-2spCUZrrA', {
  attribution: 'Map data &copy; <a href="http://openstreetmap.org">OpenStreetMap</a> contributors, <a href="http://creativecommons.org/licenses/by-sa/2.0/">CC-BY-SA</a>, Imagery © <a href="http://mapbox.com">Mapbox</a>',
  maxZoom: 10,
  id: 'mapbox.streets'
}).addTo(mymap);

// Sets a sample circle in Castle Rock
var circle = L.circle([39.376089, -104.853487], {
  color: 'red',
  fillColor: '#f03',
  fillOpacity: 0.5,
  radius: 500
}).addTo(mymap);

function makeRequest() {
  httpRequest = new XMLHttpRequest();

  if (!httpRequest) {
    alert('Giving up :( Cannot create an XMLHTTP instance');
    return false;
  }

  httpRequest.open('GET', 'test.html');
  httpRequest.send();

}

// Initalizes map
var mymap = L.map('mapid').setView([51.505, -0.09], 13);

// Sets the default view of the map
mymap.setView(new L.LatLng(38.1711269, -97.5383369), 5);

// Sets the tile layer from Mapbox
L.tileLayer('https://api.mapbox.com/styles/v1/brandonyates/cj5tvlwng020z2qr7ws0ylg1o/tiles/256/{z}/{x}/{y}?access_token=pk.eyJ1IjoiYnJhbmRvbnlhdGVzIiwiYSI6ImNpcTl3a3AzbDAxbmhmeW0xaGYwbmIwNmQifQ.ItJcFDmazEMy-2spCUZrrA', {
  attribution: 'Map data &copy; <a href="http://openstreetmap.org">OpenStreetMap</a> contributors, <a href="http://creativecommons.org/licenses/by-sa/2.0/">CC-BY-SA</a>, Imagery © <a href="http://mapbox.com">Mapbox</a>',
  maxZoom: 10,
  id: 'mapbox.streets'
}).addTo(mymap);

// Sets a sample circle in Castle Rock
var circle = L.circle([39.376089, -104.853487], {
  color: 'red',
  fillColor: '#f03',
  fillOpacity: 0.5,
  radius: 500
}).addTo(mymap);

function makeRequest() {
  httpRequest = new XMLHttpRequest();

  if (!httpRequest) {
    console.log('Could not create XMLHttpRequest instance')
    return false;
  }

  httpRequest.open('GET', '/rest/live');
  httpRequest.send();

}

Remove xmlhttp