MediaWiki:Common.js

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/* Any JavaScript here will be loaded for all users on every page load. */
$('.pi-image-collection').each(function() {
    var $tabs = $(this).find('.pi-image-collection-tab');
    var $images = $(this).find('.pi-image-collection-image');
    
    $tabs.on('click', function() {
        var index = $(this).index();
        $tabs.removeClass('active');
        $images.removeClass('active');
        $(this).addClass('active');
        $images.eq(index).addClass('active');
    });
});