Как оптимизировать код на jQuery?

$('.series-info ul li:first-child').on('click', function() {
            $('.series-info .series-info-block:not(:last-child)').show();
            $('.series-info .series-info-block:last-child').hide();
        })

        $('.series-info ul li:nth-child(2)').on('click', function() {
            $('.series-info .series-info-block:not(:last-child)').hide();
            $('.series-info .series-info-block:last-child').show(); 
        })

        $('.series-info ul li').on('click', function() {
            $('.series-info ul li.active').removeClass('active');
            $(this).toggleClass('active');
        })