JavaScriptで現在位置を取得する

index.js

const usableGeolocation = () => {
    return "geolocation" in navigator;
};

window.onload = () => {
    if (!usableGeolocation()) {
        console.error('Cannot use geolocation');
        return false;
    }
    const geoLocation = navigator.geolocation;
     geoLocation.getCurrentPosition((position) => {
        console.log(position);
     });
}