How to install google maps via api on the site?

Question

JavaScript

Can't install google maps. Here is the callback function

var marker;

function shopMap() {
    var shop = $('#shops-info__map').attr('data-geo').split(',');
    var map = new google.maps.Map(document.getElementById('shops-info__map'), {
        center: new google.maps.LatLng(shop[0], shop[1]),
        //scrollwheel: false,
        disableDefaultUI: false,
        mapTypeControl: false,
        streetViewControl: false,
        zoom: 15,
        mapTypeId: google.maps.MapTypeId.ROADMAP
    });
    var customMapType = new google.maps.StyledMapType([{"stylers": [{"saturation": -100}]}, {
            "featureType": "poi",
            "stylers": [{"visibility": "off"}]
        }],
        {name: 'Custom Stysle'});
    var customMapTypeId = 'custom_style';
    map.mapTypes.set(customMapTypeId, customMapType);
    map.setMapTypeId(customMapTypeId);

    var marker_image = '/static/images/bml_map.svg';
    var marker = new google.maps.Marker({
        position: new google.maps.LatLng(shop[0], shop[1]),
        map: map,
        icon: marker_image
    });
    var text = $('#shops-info__map').attr('data-text');
    var infowindow = new google.maps.InfoWindow({
        content: text
    });
    marker.addListener('click', function () {
        infowindow.open(map, marker);
    });
}

This is how it is written in html

script(src="https://maps.googleapis.com/maps/api/js?key=AIzaSyDy9eQx5kMEARWLXqslJFeGxvIP-GrEG34&callback=shopMap")

From several sources we learned that the api is paid, while others claim that it is not. Is it so

Answer 1

Api is paid when a certain number of requests per month
is reached, if you increase the limit, then money will begin to be debited.
But when you receive an api key, you will have to pay (like $ 1), which will be returned to you within 1 day, this is done to check the card whether it exists on In fact,
at least that's how I understood the documentation on the Google page
(I can't help with the code)

Answer 2

Maybe this? If not , then I misunderstood your question.