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index.ts
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index.ts
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/*
* Copyright 2019 Google LLC. All Rights Reserved.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
// [START maps_directions_simple]
function initMap(): void {
const directionsService = new google.maps.DirectionsService();
const directionsRenderer = new google.maps.DirectionsRenderer();
const map = new google.maps.Map(
document.getElementById("map") as HTMLElement,
{
zoom: 7,
center: { lat: 41.85, lng: -87.65 },
}
);
directionsRenderer.setMap(map);
const onChangeHandler = function () {
calculateAndDisplayRoute(directionsService, directionsRenderer);
};
(document.getElementById("start") as HTMLElement).addEventListener(
"change",
onChangeHandler
);
(document.getElementById("end") as HTMLElement).addEventListener(
"change",
onChangeHandler
);
}
function calculateAndDisplayRoute(
directionsService: google.maps.DirectionsService,
directionsRenderer: google.maps.DirectionsRenderer
) {
directionsService.route(
{
origin: {
query: (document.getElementById("start") as HTMLInputElement).value,
},
destination: {
query: (document.getElementById("end") as HTMLInputElement).value,
},
travelMode: google.maps.TravelMode.DRIVING,
},
(response, status) => {
if (status === "OK") {
directionsRenderer.setDirections(response);
} else {
window.alert("Directions request failed due to " + status);
}
}
);
}
// [END maps_directions_simple]
export { initMap };