Isotope: combination filtering + multiple selection

Question

To all jQuery heros out there, I need help! (again)

I found similar questions to mine on the internet but there were no answers so far :-/

I want to filter a bu

Answer 1

have a look here

http://codepen.io/desandro/pen/btFfG

it's the same answer by DrewT but from the Isotope team.

all you have to do in order to filter is put every group under same object

var filters = {}; // should be outside the scope of the filtering function
 
//filtering function
$a.click(function() {       
    var group = $optionSet.attr('data-filter-group');
    var filterGroup = filters[group];
    if (!filterGroup) {
        filterGroup = filters[group] = [];
    }
    filters[group].push($this.attr('data-filter-value'));
})
       

now all you have to do is call getComboFilter function (you don't have to understand the code inside getComboFilter, think of it as a part of isotope)

var comboFilter = getComboFilter( filters );
$container.isotope({ filter: comboFilter});
 
 function getComboFilter( filters ) {
   var i = 0;
   var comboFilters = [];
   var message = [];
 
   for ( var prop in filters ) {
     message.push( filters[ prop ].join(' ') );
     var filterGroup = filters[ prop ];
     // skip to next filter group if it doesn't have any values
     if ( !filterGroup.length ) {
       continue;
     }
     if ( i === 0 ) {
       // copy to new array
       comboFilters = filterGroup.slice(0);
     } else {
       var filterSelectors = [];
       // copy to fresh array
       var groupCombo = comboFilters.slice(0); // [ A, B ]
       // merge filter Groups
       for (var k=0, len3 = filterGroup.length; k < len3; k++) {
         for (var j=0, len2 = groupCombo.length; j < len2; j++) {
           filterSelectors.push( groupCombo[j] + filterGroup[k] ); // [ 1, 2 ]
         }
 
       }
       // apply filter selectors to combo filters for next group
       comboFilters = filterSelectors;
     }
     i++;
   }
 
   var comboFilter = comboFilters.join(', ');
   return comboFilter;
 }