I am using the Google Maps JavaScript API and am providing directions with alternative routes.
I would like to display the INACTIVE alternative routes in a gray color, and the current ACTIVE route in a neon green color.
How can I target the inactive and active route states and control their colors?
I've been able to change the alternative route colors using Geocodezip's example but now I need to target inactive and active states.
Here's an example of the functionality I'm going for
for (var j = 0; j < response.routes.length; j++) {
var path = new google.maps.MVCArray();
polyArray.push(new google.maps.Polyline({
map: map,
strokeColor: colors[j],
strokeOpacity: 1.0,
strokeWeight: 5
}));
polyArray[polyArray.length - 1].setPath(path);
for (var i = 0, len = response.routes[j].overview_path.length; i < len; i++) {
path.push(response.routes[j].overview_path[i]);
}
}
<!DOCTYPE html>
<html>
<head>
<meta name="viewport" content="initial-scale=1.0, user-scalable=no">
<meta charset="utf-8">
<title>Directions service</title>
<style>
html, body {
height: 100%;
margin: 0;
padding: 0;
}
#map {
height: 100%;
}
#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>Start: </b>
<select id="start">
<option value="chicago, il">Chicago</option>
<option value="st louis, mo">St Louis</option>
<option value="joplin, mo">Joplin, MO</option>
<option value="oklahoma city, ok">Oklahoma City</option>
<option value="amarillo, tx">Amarillo</option>
<option value="gallup, nm">Gallup, NM</option>
<option value="flagstaff, az">Flagstaff, AZ</option>
<option value="winona, az">Winona</option>
<option value="kingman, az">Kingman</option>
<option value="barstow, ca">Barstow</option>
<option value="san bernardino, ca">San Bernardino</option>
<option value="los angeles, ca">Los Angeles</option>
</select>
<b>End: </b>
<select id="end">
<option value="chicago, il">Chicago</option>
<option value="st louis, mo">St Louis</option>
<option value="joplin, mo">Joplin, MO</option>
<option value="oklahoma city, ok">Oklahoma City</option>
<option value="amarillo, tx">Amarillo</option>
<option value="gallup, nm">Gallup, NM</option>
<option value="flagstaff, az">Flagstaff, AZ</option>
<option value="winona, az">Winona</option>
<option value="kingman, az">Kingman</option>
<option value="barstow, ca">Barstow</option>
<option value="san bernardino, ca">San Bernardino</option>
<option value="los angeles, ca">Los Angeles</option>
</select>
</div>
<div id="map"></div>
<script>
var polyArray = [];
var colors;
function initMap() {
polyArray = [];
colors = ['#ff0000', '#00ff00', '#0000ff', '#ffff00', '#ff00ff', '#00ffff'];
var directionsService = new google.maps.DirectionsService;
var directionsDisplay = new google.maps.DirectionsRenderer;
var map = new google.maps.Map(document.getElementById('map'), {
zoom: 7,
center: {lat: 41.85, lng: -87.65}
});
directionsDisplay.setMap(map);
var onChangeHandler = function() {
calculateAndDisplayRoute(directionsService, directionsDisplay);
};
document.getElementById('start').addEventListener('change', onChangeHandler);
document.getElementById('end').addEventListener('change', onChangeHandler);
}
function calculateAndDisplayRoute(directionsService, directionsDisplay) {
directionsService.route({
origin: document.getElementById('start').value,
destination: document.getElementById('end').value,
travelMode: 'DRIVING',
provideRouteAlternatives: true
}, function(response, status) {
if (status === 'OK') {
for (var j = 0; j < response.routes.length; j++) {
var path = new google.maps.MVCArray();
polyArray.push(new google.maps.Polyline({
map: map,
strokeColor: colors[j],
strokeOpacity: 1.0,
strokeWeight: 5
}));
polyArray[polyArray.length - 1].setPath(path);
for (var i = 0, len = response.routes[j].overview_path.length; i < len; i++) {
path.push(response.routes[j].overview_path[i]);
}
}
directionsDisplay.setDirections(response);
} else {
window.alert('Directions request failed due to ' + status);
}
});
}
</script>
<script async defer
src="https://maps.googleapis.com/maps/api/js?sensor=false&callback=initMap">
</script>
</body>
</html>
