javascript to load a bootstrap modal content from an anchor tag

bootstrap-v4-modal-load.js

// boostrap 4 load modal example from docs
$('#modal-container').on('show.bs.modal', function (event) {
    var button = $(event.relatedTarget); // Button that triggered the modal
    var url = button.attr("href");
    var modal = $(this);

    // note that this will replace the content of modal-content ever time the modal is opened
    modal.find('.modal-content').load(url);
});