javascript — новичок: неизвестно, куда идти дальше с изотопной фильтрацией

Я пытался закодировать изотопный фильтр на своем сайте здесь: http://testerparm.b1.jcink.com/index.php?act=Pages&PID = 1

К сожалению, я совсем новичок в работе с таким кодом и столкнулся с проблемой. Первая категория кнопок / фильтров (помеченных группами) работает нормально. Однако вторая и третья категории кнопок не фильтруются так, как я хочу. Я нажму на одну из этих кнопок, и ничего не произойдет.

Вот HTML и Javascript для пользовательской веб-страницы:

<script src="http://testerparm.b1.jcink.com/uploads/testerparm/isotope_pkgd_min.js"></script>
<script src="testerparm.b1.jcink.com/uploads/testerparm/isotope_pkgd.js"></script>

<script type='text/javascript'>

$( function() {
// init Isotope
var $container = $('.isotope').isotope({
itemSelector: '.element-item',
layoutMode: 'fitRows'
});
// filter functions
var filterFns = {
// show if number is greater than 50
numberGreaterThan50: function() {
var number = $(this).find('.number').text();
return parseInt( number, 10 ) > 50;
},
// show if name ends with -ium
ium: function() {
var name = $(this).find('.name').text();
return name.match( /ium$/ );
}
};
// bind filter button click
$('#filters').on( 'click', 'button', function() {
var filterValue = $( this ).attr('data-filter');
// use filterFn if matches value
filterValue = filterFns[ filterValue ] || filterValue;
$container.isotope({ filter: filterValue });
});
// change is-checked class on buttons
$('.button-group').each( function( i, buttonGroup ) {
var $buttonGroup = $( buttonGroup );
$buttonGroup.on( 'click', 'button', function() {
$buttonGroup.find('.is-checked').removeClass('is-checked');
$( this ).addClass('is-checked');
});
});

});

</script><h1>Politeia Who's Who</h1>

<h2>Groups:</h2>
<div id="filters" class="button-group">
<button class="button is-checked" data-filter="*">All</button>
<button class="button" data-filter=".staff">Staff</button>
<button class="button" data-filter=".player">Player</button>
<button class="button" data-filter=".character">Character</button>
<button class="button" data-filter=".aristocracy">Aristocracy</button>
<button class="button" data-filter=".auxiliary">Auxiliary</button>
<button class="button" data-filter=".criminal">Criminal</button>
<button class="button" data-filter=".majority">Majority</button>
<button class="button" data-filter=".police">Police</button>
</div>
<p>
<h2>Gender:</h2>
<div id="gender-filters" class="button-group">
<button class="button is-checked" data-filter="*">All</button>
<button class="button" data-filter=".female">Female</button>
<button class="button" data-filter=".male">Male</button>
<button class="button" data-filter=".nb">Non-Binary</button>
</div>
<p>
<h2>Players:</h2>
<div id="player-filters" class="button-group">
<button class="button is-checked" data-filter="*">All</button>
<button class="button" data-filter=".test1">Test1</button>
<button class="button" data-filter=".test2">Test2</button>
</div>
<p>
<div class="isotope">
<div class="element-item staff" data-category="transition">
<h3 class="name">Philosopher King</h3>
<span title="This is the staff account used for official business."><a href="http://politeia.jcink.net/index.php?showuser=5"><img src="http://i.imgur.com/nMfx704.png" /></a></span>
</div><div class="element-item staff female test1" data-category="transition">
<h3 class="name">Test1</h3>
<span title="This is the staff account used for official business."><a href="http://politeia.jcink.net/index.php?showuser=5"><img src="http://i.imgur.com/nMfx704.png" /></a></span>
</div>

<div class="element-item staff test2 female" data-category="metalloid">
<h3 class="name">Test2</h3>
<span title="This is the staff account used for official business."><a href="http://politeia.jcink.net/index.php?showuser=5"><img src="http://i.imgur.com/nMfx704.png" /></a></span>
</div>
<div class="element-item character majority male test1" data-category="post-transition">
<h3 class="name">Gene Lieber</h3>
<span title="This is the staff account used for official business."><a href="http://politeia.jcink.net/index.php?showuser=5"><img src="http://i.imgur.com/nMfx704.png" /></a></span>
</div>
<div class="element-item character majority male test1" data-category="post-transition">
<h3 class="name">Frank Piper</h3>
<span title="This is the staff account used for official business."><a href="http://politeia.jcink.net/index.php?showuser=5"><img src="http://i.imgur.com/nMfx704.png" /></a></span>
</div>
<div class="element-item character majority female test2" data-category="transition">
<h3 class="name">Anna Valentine</h3>
<span title="This is the staff account used for official business."><a href="http://politeia.jcink.net/index.php?showuser=5"><img src="http://i.imgur.com/nMfx704.png" /></a></span>
</div>

Решено!