$(document).ready(function() {

    if ( $(".js-cart-book").length > 0 ){
        $(".js-cart-book").off().on('click', function (){

            let $book_id = this.dataset.bookId;
            let $type_book = this.dataset.typeBook;

            if(typeof $book_id != "undefined" && $book_id != null && $book_id.trim() != ''){
                addBooksIntoCart($book_id, $type_book);
            }
        });
    }
});