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622466f97c
* add geolocation samples Co-authored-by: amysteamdev <37001393+AmySteam@users.noreply.github.com> Co-authored-by: Oliver Dunk <oliverdunk@google.com>
45 lines
1.5 KiB
JavaScript
45 lines
1.5 KiB
JavaScript
// Copyright 2023 Google LLC
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// https://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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// Registering this listener when the script is first executed ensures that the
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// offscreen document will be able to receive messages when the promise returned
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// by `offscreen.createDocument()` resolves.
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const header = document.querySelector('h1');
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const generateDMS = (coords, isLat) => {
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const absCoords = Math.abs(coords);
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const deg = Math.floor(absCoords);
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const min = Math.floor((absCoords - deg) * 60);
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const sec = ((absCoords - deg - min / 60) * 3600).toFixed(1);
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const direction = coords >= 0 ? (isLat ? 'N' : 'E') : isLat ? 'S' : 'W';
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return `${deg}°${min}'${sec}"${direction}`;
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};
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navigator.geolocation.getCurrentPosition(
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(loc) => {
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const { coords } = loc;
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let { latitude, longitude } = coords;
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latitude = generateDMS(latitude, true);
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longitude = generateDMS(longitude);
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console.log(`position: ${latitude}, ${longitude}`);
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},
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(err) => {
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header.innerText = 'error (check console)';
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console.error(err);
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}
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);
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