// https://stackoverflow.com/a/12025482
jQuery(document).ready(function($) {
    // change
    $('#archive-filters').on('click', 'input', function(){
        
        // vars 
        var url = '<?php echo home_url('ajuts/'); ?>';
            args = {};
        var appendtoURL = '';
        var eachfiltered = '';
        var valueschecked = '';
        
        // loop over filters
        $('#archive-filters .filter').each(function(){
           // check if is first appearance of each
           if( eachfiltered != $(this).data('filter') ){
             // save already calculated field=val01,val02,val03
             if( eachfiltered != '' && valueschecked != '' ){
               // remove last ','
               valueschecked = valueschecked.slice(0, -1);
               appendtoURL += eachfiltered +'=' +valueschecked +'&';
             };
             // start new fieldname filtered
             eachfiltered = $(this).data('filter');
             // reset values 
             valueschecked = '';
             // find checked inputs 
             $(this).find('input:checked').each(function(){
               // if not empty save value and ,
               if( $(this).val() != '' ){
                valueschecked += $(this).val() + ',';
               };
             });
             //alert( appendtoURL +":" +eachfiltered +"=" +valuescheked);
           } else {
             // we have previous values checked
             // find checked inputs
             //if( $(this).val() != '' ){
               // if not empty append value and ,
               $(this).find('input:checked').each(function(){
                 valueschecked += $(this).val() + ',';
               });
             //alert( appendtoURL +":not:" +eachfiltered +"=" +valuescheked);
             //};
           };
        });
        
        // remove last ','
        valueschecked = valueschecked.slice(0, -1);
        // save last cycled filtered value already calculated field=val01,val02,val03
        appendtoURL += eachfiltered +'=' +valueschecked +'&';
 
        // remove last &
        appendtoURL = appendtoURL.slice(0, -1);
        
        // update url
        url += '?' +appendtoURL;
 
        // show or modify the url
        //alert( url );
        //$('#filterlink').text(url);
        
        // convert a href url to new value
        $('#submitfilteredlink').attr('href',url);
 
    });
 
})