<div id="gmaps" style="height: 100%;">

</div>

<script>
    var map;
    $(document).ready(function(){
        $('a[data-toggle="tab"]').on('shown.bs.tab', function (e) {
          var target = $(e.target).attr("href") // activated tab
          if(target == "#map" && !map){
            map = new Map();
          }
        });
    });
</script>
<script async defer
        src="https://maps.googleapis.com/maps/api/js?key=AIzaSyAaYyVEcLFqwKP_VnzfRSIMkWWWrLtMiGQ&signed_in=true"></script>

<!-- Modal -->
<div class="modal fade" id="myModal" tabindex="-1" role="dialog" aria-labelledby="myModalLabel">
  <div class="modal-dialog" role="document">
    <div class="modal-content">
      <div class="modal-header">
        <button type="button" class="close" data-dismiss="modal" aria-label="Close"><span aria-hidden="true">&times;</span></button>
        <h4 class="modal-title" id="myModalLabel">Modal title</h4>
      </div>
      <div class="modal-body" id="modal-content">

      </div>
      <div class="modal-footer">
        <button type="button" class="btn btn-default" data-dismiss="modal">Close</button>
        <button type="button" class="btn btn-primary">Save changes</button>
      </div>
    </div>
  </div>
</div>
