MediaWiki:Common.js

Note: After publishing, you may have to bypass your browser's cache to see the changes.

Firefox / Safari: Hold Shift while clicking Reload, or press either Ctrl-F5 or Ctrl-R (⌘-R on a Mac)
Google Chrome: Press Ctrl-Shift-R (⌘-Shift-R on a Mac)
Edge: Hold Ctrl while clicking Refresh, or press Ctrl-F5.

mw.loader.load('https://cdnjs.cloudflare.com/ajax/libs/slick-carousel/1.8.1/slick.min.js');
mw.loader.load('https://cdnjs.cloudflare.com/ajax/libs/slick-carousel/1.8.1/slick.css', 'text/css');
mw.loader.load('https://cdnjs.cloudflare.com/ajax/libs/slick-carousel/1.8.1/slick-theme.css', 'text/css');

mw.hook('wikipage.content').add(function($content) {
    $content.find('.mw-jsslideshow .slideshow').each(function() {
        const $slideshow = $(this);

        $slideshow.slick({
            infinite: true,
            slidesToShow: 1,
            slidesToScroll: 1,
            autoplay: true,
            autoplaySpeed: 5000,
            arrows: true,
            dots: true,
            adaptiveHeight: true
        });

        // Keep the slideshow fresh if the window resizes
        $(window).on('resize', function() {
            $slideshow.slick('setPosition');
        });
    });
});