Trivial example to calculate route distances from a fixed point to location(s) specified as user input, using HERE Location Services.
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<!DOCTYPE html> | |
<html> | |
<head> | |
<meta charset="utf-8" /> | |
<script src="http://js.api.here.com/v3/3.0/mapsjs-core.js" type="text/javascript" charset="utf-8"></script> | |
<script src="http://js.api.here.com/v3/3.0/mapsjs-service.js" type="text/javascript" charset="utf-8"></script> | |
</head> | |
<body> | |
<form onsubmit="geocodeAndRoute(); return false"> | |
<input type="text" id="address"><input type="submit"> | |
</form> | |
<table> | |
<thead> | |
<tr> | |
<th>Location</th> | |
<th>Distance to drive</th> | |
</tr> | |
</thead> | |
<tbody id="resultsTable"></tbody> | |
</table> | |
<script> | |
const sourceLocation = '52.5214,13.41555' | |
const platform = new H.service.Platform({ | |
'app_id': 'YOUR_APP_ID_GOES_HERE', | |
'app_code': 'YOUR_APP_CODE_GOES_HERE' | |
}) | |
const geocoder = platform.getGeocodingService() | |
const router = platform.getRoutingService() | |
const onGeocodeResult = (result) => { | |
const table = document.getElementById('resultsTable') | |
table.innerHTML = '' | |
if (result.Response.View.length) { | |
const locations = result.Response.View[0].Result | |
for (loc of locations) { | |
const row = table.insertRow(-1) | |
row.insertCell(-1).innerHTML = loc.Location.Address.Label | |
const { Latitude, Longitude } = loc.Location.DisplayPosition | |
const routeCell = row.insertCell(-1) | |
const routingParameters = { | |
'mode': 'fastest;car;traffic:disabled', | |
'waypoint0': 'geo!' + sourceLocation, | |
'waypoint1': 'geo!' + Latitude + ',' + Longitude, | |
'representation': 'overview' | |
} | |
// calculate each route separately (alternatively, could use the Matrix Routing API) | |
router.calculateRoute(routingParameters, routeResult => { | |
if (routeResult.response) { | |
const distKm = routeResult.response.route[0].summary.distance / 1000 | |
routeCell.innerHTML = distKm | |
} else { // no route found | |
routeCell.innerHTML = 'unknown' | |
} | |
}, (error) => alert(error.message)) | |
} | |
} else { | |
// no matching location found | |
} | |
} | |
function geocodeAndRoute() { | |
const address = document.getElementById('address').value | |
const geoparams = { searchText: address } | |
geocoder.geocode(geoparams, onGeocodeResult, (error) => alert(error.message)) | |
} | |
</script> | |
</body> | |
</html> |
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