title: How to put markers on Google Maps from external JSON data-sources?
body: <p>I'm trying to put out some Google Maps-markers on my map with location from a API. I tried to make a for-loop that counts all JSON-data and puts "A drivers name, a drivers latitude and a drivers longitude" inside a array. Then should this array help Google Maps to pin-out theese locations on a map. Code example below:</p>
  
  <pre><code>setTimeout(function () {
  
      var map = new google.maps.Map(document.getElementById('map'), {
          zoom: 10,
          center: new google.maps.LatLng(62.457171, 17.350953),
          mapTypeId: google.maps.MapTypeId.ROADMAP
      });
  
      var infowindow = new google.maps.InfoWindow();
  
      var marker, i;
  
      var url = "http://blackcab.didair.se/api/drivers";
      var name;
      var lat;
      var lon;
      var locations;
  
      $.getJSON(url,
  
      function (response) {
          name = response.drivers[n].name;
          lat = response.drivers[n].currentLat;
          lon = response.drivers[n].currentLon;
          for (var n = 0; n &lt; response.drivers.length; n++)
          var locations = [
              [name, lat, lon, n], ];
          for (i = 0; i &lt; locations.length; i++) {
              marker = new google.maps.Marker({
                  position: new google.maps.LatLng(locations[i][1], locations[i][2]),
                  map: map
              });
  
              google.maps.event.addListener(marker, 'click', (function (marker, i) {
                  return function () {
                      infowindow.setContent(locations[i][0]);
                      infowindow.open(map, marker);
                  }
              })(marker, i));
          });
  }, 3000);
  </code></pre>
  
  <p>This code is inside a interval due to I want it to reload theese positions during all the time.
  I looked into errors I got in Google Chrome web developer tool, but then I just got more errors. Is there an easy solution to this? A real "nut-cracker".</p>
  
  <p>Thanks in advance!</p>
  
  <p>Jack</p>