You can use jQuery to interact with ratings.

The following code will show a message, when the "heart" icon is clicked. For this we will use the categories ID to find it using jQuery.

AJS.toInit(function () {
    setTimeout(function () {
        jQuery('.content-rating-icon[data-category-id=2]').click(function () {
                alert('Thank you.');
                return true;
            }
        );
    }, 1000);
})
JS