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HTML 

              
                <h1>Isotope - sorting by selected category</h1>

<div class="button-group sort-button-group">
  <button class="button is-checked" data-category="all">all</button>
  <button class="button" data-category="red">red</button>
  <button class="button" data-category="green">green</button>
  <button class="button" data-category="blue">blue</button>
</div>

<div class="grid">
  <div class="grid-item red grid-item--height3"></div>
  <div class="grid-item blue grid-item--height2"></div>
  <div class="grid-item green"></div>
  <div class="grid-item red"></div>
  <div class="grid-item blue grid-item--height2"></div>
  <div class="grid-item blue grid-item--height3"></div>
  <div class="grid-item red grid-item--height2"></div>
  <div class="grid-item blue grid-item--height2"></div>
  <div class="grid-item red"></div>
  <div class="grid-item green grid-item--height3"></div>
  <div class="grid-item blue grid-item--height2"></div>
  <div class="grid-item blue "></div>
  <div class="grid-item green"></div>
  <div class="grid-item red grid-item--height3"></div>
</div>
!

CSS 

              
                * { box-sizing: border-box; }

body {
  font-family: sans-serif;
}

/* ---- button ---- */

.button {
  display: inline-block;
  padding: 0.5em 1.0em;
  margin-bottom: 10px;
  background: #EEE;
  border: none;
  border-radius: 7px;
  background-image: linear-gradient( to bottom, hsla(0, 0%, 0%, 0), hsla(0, 0%, 0%, 0.2) );
  color: #222;
  font-family: sans-serif;
  font-size: 16px;
  text-shadow: 0 1px white;
  cursor: pointer;
}

.button:hover {
  background-color: #8CF;
  text-shadow: 0 1px hsla(0, 0%, 100%, 0.5);
  color: #222;
}

.button:active,
.button.is-checked {
  background-color: #28F;
}

.button.is-checked {
  color: white;
  text-shadow: 0 -1px hsla(0, 0%, 0%, 0.8);
}

.button:active {
  box-shadow: inset 0 1px 10px hsla(0, 0%, 0%, 0.8);
}

/* ---- button-group ---- */

.button-group:after {
  content: '';
  display: block;
  clear: both;
}

.button-group .button {
  float: left;
  border-radius: 0;
  margin-left: 0;
  margin-right: 1px;
}

.button-group .button:first-child { border-radius: 0.5em 0 0 0.5em; }
.button-group .button:last-child { border-radius: 0 0.5em 0.5em 0; }


/* ---- grid ---- */

.grid {
  background: #DDD;
  max-width: 1200px;
}

/* clear fix */
.grid:after {
  content: '';
  display: block;
  clear: both;
}

/* ---- .grid-item ---- */

.grid-item {
  float: left;
  width: 160px;
  height: 160px;
  background: #888;
  margin-bottom: 20px;
}

.grid-item--height2 { height: 200px; }
.grid-item--height3 { height: 260px; }

.grid-item.red { background: #F31; }
.grid-item.green { background: #2B6; }
.grid-item.blue { background: #08F; }
!

JS 

              
                // external js: isotope.pkgd.js

var selectedCategory;

var $grid = $('.grid').isotope({
  itemSelector: '.grid-item',
  masonry: {
    columnWidth: 160,
    gutter: 20
  },
  getSortData: {
    selectedCategory: function( itemElem ) {
      return $( itemElem ).hasClass( selectedCategory ) ? 0 : 1;
    }
  }
});

var $items = $('.grid').find('.grid-item');

$('.sort-button-group').on( 'click', '.button', function() {
  // set selectedCategory
  selectedCategory = $( this ).attr('data-category');
  if ( selectedCategory == 'all' ) {
    $grid.isotope({
      sortBy: 'original-order'
    });
    // restore all items to full opacity
    $items.css({
      opacity: 1
    });
    return;
  }
  // change opacity for selected/unselected items
  var selectedClass = '.' + selectedCategory;
  $items.filter( selectedClass ).css({
    opacity: 1
  });
  $items.not( selectedClass ).css({
    opacity: 0.25
  });

  // update sort data now that selectedCategory has changed
  $grid.isotope('updateSortData');
  $grid.isotope({ sortBy: 'selectedCategory' });
});

  // 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');
  });
});
!
999px

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