larrybotha
8/15/2014 - 10:56 AM

distanceinput.js

submit.html
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<input type="submit" value="Calculate Route" onclick="calcRoute()" />
map.html
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<meta name="viewport" content="initial-scale=1.0, user-scalable=no"/>
<script type="text/javascript" src="http://maps.google.com/maps/api/js?sensor=false"></script>
legs.js
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distanceInput.value = response.routes[0].legs[0].distance.value / 1000;
js.js
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var directionsService = new google.maps.DirectionsService();

function calcRoute() {
  var start = document.getElementById("start").value;
  var end = document.getElementById("end").value;
  
  var request = {
    origin:start,
    destination:end,
    travelMode: google.maps.DirectionsTravelMode.DRIVING
  };
  
  directionsService.route(request, function(response, status) {
    if (status == google.maps.DirectionsStatus.OK) {
      directionsDisplay.setDirections(response);
    }
  });
}
init.html
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<script type="text/javascript">
  var directionDisplay;
  var map;
  
  function initialize() {
    directionsDisplay = new google.maps.DirectionsRenderer();
    var melbourne = new google.maps.LatLng(-37.813187, 144.96298);
    var myOptions = {
      zoom:12,
      mapTypeId: google.maps.MapTypeId.ROADMAP,
      center: melbourne
    }
    
    map = new google.maps.Map(document.getElementById("map_canvas"), myOptions);
    directionsDisplay.setMap(map);
  }
</script>
init-body.html
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<body onload="initialize()">
index.html
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<html>
  <head>
    <title>Distance Calculator</title>
    <style type="text/css">
      #map_canvas {
        height: 100%;
      }
    </style>
  </head>
  <body>
    <div>
      <p>
        <label for="start">Start: </label>
        <input type="text" name="start" id="start" />
        <label for="end">End: </label>
        <input type="text" name="end" id="end" />
        <input type="submit" value="Calculate Route" />
      </p>
      <p>
        <label for="distance">Distance (km): </label>
        <input type="text" name="distance" id="distance" readonly="true" />
      </p>
    </div>
    <div id="map_canvas"></div>
  </body>
</html>
distanceinput.js
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var distanceInput = document.getElementById("distance");