refactoring

$(function() {
    $('#js-shopping-list-form').submit(function(event) {
        event.preventDefault();
        const item = $('#shopping-list-entry').val();
    $('.shopping-list').prepend(
        `<li>
            <span class ="shopping-item">${item}</span>
            <div class="shopping-item-controls">
                <button class="shopping-item-toggle">
                    <span class="button-label">check</span>
                </button>
                <button class="shopping-item-delete">
                    <span class="button-label">delete</span>
                </button>
            </div>
        </li>`);
    registerEvents();
    });
});

function registerEvents() {
    $('.shopping-item-delete').on("click", function(event) {
        $(this).closest('li').remove();
    });
    $('.shopping-item-toggle').on("click", function(event) {
        $(this).closest('li').find('.shopping-item').toggleClass('shopping-item shopping-item__checked');
    });
}