test.html

<!DOCTYPE html>
<html>
  <head>
    <script src="https://maps.googleapis.com/maps/api/js?v=3.exp&sensor=false"></script>
    <script>
var markersArray = [];

var origin = '1121 Church Street, Evanston, IL';
var destination = '10000 West O\'Hare International Airport';

//var destinationIcon = 'https://chart.googleapis.com/chart?chst=d_map_pin_letter&chld=D|FF0000|000000';
//var originIcon = 'https://chart.googleapis.com/chart?chst=d_map_pin_letter&chld=O|FFFF00|000000';

function calculateDistances() {
  var service = new google.maps.DistanceMatrixService();
  service.getDistanceMatrix(
    {
      origins: [origin],
      destinations: [destination],
      travelMode: google.maps.TravelMode.DRIVING,
      unitSystem: google.maps.UnitSystem.METRIC,
      avoidHighways: false,
      avoidTolls: false
    }, callback);
}
function callback(response, status) {
  if (status != google.maps.DistanceMatrixStatus.OK) {
    alert('Error was: ' + status);
  } else {
    var origins = response.originAddresses;
    var destinations = response.destinationAddresses;
    var outputDiv = document.getElementById('outputDiv');
    var totaltime = 0;
    outputDiv.innerHTML = '';
    //deleteOverlays();

    for (var i = 0; i < origins.length; i++) {
      var results = response.rows[i].elements;
      //addMarker(origins[i], false);
      for (var j = 0; j < results.length; j++) {
        totaltime = totaltime + results[j].duration.value;
        totaltime=totaltime/60;
        console.log(totaltime);
      }
    }
  }
}
    </script>
  </head>





  <body>
    <div id="content-pane">2
      <div id="inputs">
        <pre>
var origin1 = new google.maps.LatLng(42.057915, -87.676655);
var origin2 = '2145 Sheridan Road, Evanston, IL';
var destinationA = '1615 Ridge Avenue, Evanston, IL';
var destinationB = new google.maps.LatLng(42.047932, -87.688168);
        </pre>
        <p><button type="button" onclick="calculateDistances();">Calculate
          distances</button></p>
      </div>
      <div id="outputDiv"></div>
    </div>
    <div id="map-canvas"></div>
  </body>
</html>