How I use HTML5 geolocation in my apps.

index.html

<span class="geoFind" id="geoFind">Just find me!</span>

script.js

$geoFind = $('#geoFind');

if (!navigator.geolocation) {
    $geoFind.hide();
} else {
    $geoFind.on('click', function() {
        navigator.geolocation.getCurrentPosition( function(position) {
        var lat = position.coords.latitude; // use these as you please!
        var lng = position.coords.longitude; // use these as you please!
    }, function(error) {
        alert('There was a problem! Please try using the search box instead.');
    });
});
}