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Ativar a Google Maps JavaScript API

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  1. Criar ou selecionar um projeto
  2. Ativar a Google Maps JavaScript API e serviços relacionados
  3. Criar chaves apropriadas
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Travel modes in directions

This example demonstrates the use of the DirectionsService object to fetch directions for different travel modes.

Read the documentation or view this example full screen.

function initMap() {
  var directionsDisplay = new google.maps.DirectionsRenderer;
  var directionsService = new google.maps.DirectionsService;
  var map = new google.maps.Map(document.getElementById('map'), {
    zoom: 14,
    center: {lat: 37.77, lng: -122.447}
  });
  directionsDisplay.setMap(map);

  calculateAndDisplayRoute(directionsService, directionsDisplay);
  document.getElementById('mode').addEventListener('change', function() {
    calculateAndDisplayRoute(directionsService, directionsDisplay);
  });
}

function calculateAndDisplayRoute(directionsService, directionsDisplay) {
  var selectedMode = document.getElementById('mode').value;
  directionsService.route({
    origin: {lat: 37.77, lng: -122.447},  // Haight.
    destination: {lat: 37.768, lng: -122.511},  // Ocean Beach.
    // Note that Javascript allows us to access the constant
    // using square brackets and a string value as its
    // "property."
    travelMode: google.maps.TravelMode[selectedMode]
  }, function(response, status) {
    if (status == 'OK') {
      directionsDisplay.setDirections(response);
    } else {
      window.alert('Directions request failed due to ' + status);
    }
  });
}
<div id="floating-panel">
<b>Mode of Travel: </b>
<select id="mode">
  <option value="DRIVING">Driving</option>
  <option value="WALKING">Walking</option>
  <option value="BICYCLING">Bicycling</option>
  <option value="TRANSIT">Transit</option>
</select>
</div>
<div id="map"></div>
/* Always set the map height explicitly to define the size of the div
 * element that contains the map. */
#map {
  height: 100%;
}
/* Optional: Makes the sample page fill the window. */
html, body {
  height: 100%;
  margin: 0;
  padding: 0;
}
#floating-panel {
  position: absolute;
  top: 10px;
  left: 25%;
  z-index: 5;
  background-color: #fff;
  padding: 5px;
  border: 1px solid #999;
  text-align: center;
  font-family: 'Roboto','sans-serif';
  line-height: 30px;
  padding-left: 10px;
}
 <!-- Replace the value of the key parameter with your own API key. -->
<script async defer
src="https://maps.googleapis.com/maps/api/js?key=AIzaSyCkUOdZ5y7hMm0yrcCQoCvLwzdM6M8s5qk&callback=initMap">
</script>

Sua vez de tentar

Passe o cursor na parte superior direita do bloco de código para copiar o código ou abri-lo no JSFiddle.

<!DOCTYPE html>
<html>
  <head>
    <meta name="viewport" content="initial-scale=1.0, user-scalable=no">
    <meta charset="utf-8">
    <title>Travel modes in directions</title>
    <style>
      /* Always set the map height explicitly to define the size of the div
       * element that contains the map. */
      #map {
        height: 100%;
      }
      /* Optional: Makes the sample page fill the window. */
      html, body {
        height: 100%;
        margin: 0;
        padding: 0;
      }
      #floating-panel {
        position: absolute;
        top: 10px;
        left: 25%;
        z-index: 5;
        background-color: #fff;
        padding: 5px;
        border: 1px solid #999;
        text-align: center;
        font-family: 'Roboto','sans-serif';
        line-height: 30px;
        padding-left: 10px;
      }
    </style>
  </head>
  <body>
    <div id="floating-panel">
    <b>Mode of Travel: </b>
    <select id="mode">
      <option value="DRIVING">Driving</option>
      <option value="WALKING">Walking</option>
      <option value="BICYCLING">Bicycling</option>
      <option value="TRANSIT">Transit</option>
    </select>
    </div>
    <div id="map"></div>
    <script>
      function initMap() {
        var directionsDisplay = new google.maps.DirectionsRenderer;
        var directionsService = new google.maps.DirectionsService;
        var map = new google.maps.Map(document.getElementById('map'), {
          zoom: 14,
          center: {lat: 37.77, lng: -122.447}
        });
        directionsDisplay.setMap(map);

        calculateAndDisplayRoute(directionsService, directionsDisplay);
        document.getElementById('mode').addEventListener('change', function() {
          calculateAndDisplayRoute(directionsService, directionsDisplay);
        });
      }

      function calculateAndDisplayRoute(directionsService, directionsDisplay) {
        var selectedMode = document.getElementById('mode').value;
        directionsService.route({
          origin: {lat: 37.77, lng: -122.447},  // Haight.
          destination: {lat: 37.768, lng: -122.511},  // Ocean Beach.
          // Note that Javascript allows us to access the constant
          // using square brackets and a string value as its
          // "property."
          travelMode: google.maps.TravelMode[selectedMode]
        }, function(response, status) {
          if (status == 'OK') {
            directionsDisplay.setDirections(response);
          } else {
            window.alert('Directions request failed due to ' + status);
          }
        });
      }
    </script>
    <script async defer
    src="https://maps.googleapis.com/maps/api/js?key=YOUR_API_KEY&callback=initMap">
    </script>
  </body>
</html>

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