https://boulderbooks.ca/wp-content/themes/jac/assets/scripts/myloadmore.js?ver=7.0.5

1(function($){
2    $('.js-loadmore-posts').click(function(){
3
4        var button = $(this),
5            data = {
6                'action': 'loadmore',
7                'query': loadmore_posts_params.posts, // that's how we get params from wp_localize_script() function
8                'page' : loadmore_posts_params.current_page
9            };
10        $.ajax({
11            url : loadmore_posts_params.ajaxurl, // AJAX handler
12            data : data,
13            type : 'POST',
14            beforeSend : function ( xhr ) {
15                button.text('Loading...'); // change the button text, you can also add a preloader image
16            },
17            success : function( data ){
18                if( data ) {
19                    button.text( 'More posts' ).before(data); // insert new posts
20                    loadmore_posts_params.current_page++;
21
22                    if ( loadmore_posts_params.current_page === loadmore_posts_params.max_page )
23                        button.remove(); // if last page, remove the button
24
25                    // you can also fire the "post-load" event here if you use a plugin that requires it
26                    // $( document.body ).trigger( 'post-load' );
27                } else {
28                    button.remove(); // if no data, remove the button as well
29                }
30            }
31        });
32    });
33})(jQuery);