javascript - jQuery change opacity of non-matching items -


i have following jquery has been created of member in previous question...

var filters = [];  function filterlist () {   var classes = '.' +  filters.join('.');    $('.test').removeclass('main');    if (classes.length > 1) {     $(classes).addclass('main');   } }  function removefilter(ele) {   var len = filters.length,       idx;    (var = 0; < len; i++) {     if (filters[i] === ele) {       idx = i;       break;     }   }    filters.splice(idx, 1); }  function addfilter(ele) {   if (ele) {     filters.push(ele);   } }  var selectit = (function () {   var lastselect;    return (function (ele) {     if (lastselect) {       removefilter(lastselect);     }      addfilter(ele);     lastselect = ele;   }); }());   $('.selector').on('change', function (e) {   var val = $(this).val();    selectit(val);   filterlist(); });  $('.mybuttons a').on('click', function (e) {   e.preventdefault();    var el = $(this),       col = el.data('col');    if (el.hasclass('active')) {     removefilter(col);   } else {     addfilter(col);   }    el.toggleclass('active');   filterlist(); });

http://jsfiddle.net/fprl03e5/

i trying modify code when option selected, of non-matching terms have reduced opacity.

when page loaded items should have full opacity until 1 of items selected.

i have tried adding class can't work out how have removed when items de-selected.

is you're looking do?

http://jsfiddle.net/fprl03e5/3/

function filterlist () {   var classes = '.' +  filters.join('.');    $('.test').removeclass('main');   $('.test').css('opacity', '.5');    if (classes.length > 1) {         $(classes).addclass('main').css('opacity', '1');   } else {     $('.test').css('opacity', '1');      } }

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