The Geolocation API allows the user to provide their location to web applications if they so desire. For privacy reasons, the user is asked for permission to report location information.
WebExtensions that wish to use the Geolocation object must add the "geolocation" permission to their manifest. The user's operating system will prompt the user to allow location access the first time it is requested.
Example
HTML
<button id = "find-me">Show my location</button><br/>
<p id = "status"></p>
<a id = "map-link" target="_blank"></a>JavaScript
function geoFindMe() {
const status = document.querySelector('#status');
const mapLink = document.querySelector('#map-link');
mapLink.href = '';
mapLink.textContent = '';
function success(position) {
const latitude = position.coords.latitude;
const longitude = position.coords.longitude;
status.textContent = '';
mapLink.href = `https://www.openstreetmap.org/#map=18/${latitude}/${longitude}`;
mapLink.textContent = `Latitude: ${latitude} °, Longitude: ${longitude} °`;
}
function error() {
status.textContent = 'Unable to retrieve your location';
}
if(!navigator.geolocation) {
status.textContent = 'Geolocation is not supported by your browser';
} else {
status.textContent = 'Locating…';
navigator.geolocation.getCurrentPosition(success, error);
}
}
document.querySelector('#find-me').addEventListener('click', geoFindMe);