filter sort active status

@@ -91,7 +91,11 @@ $('.filter-box').on('selectstart', '.attr, .brands-index span', function() {
 
 //【分类】
 $('.sort-pre').on('click', 'li', function() {
-    var index = $(this).index();
+    var $this = $(this),
+        index = $this.index();
+
+    $this.siblings('.active').removeClass('active');
+    $this.addClass('active');
 
     $sortSub.children(':not(.hide)').addClass('hide');
     $sortSub.children(':eq(' + index + ')').removeClass('hide');

@@ -73,6 +73,10 @@
         }
     }
 
+    .sort-pre .active .attr {
+        border: 1px solid #000;
+    }
+
     .sort-sub-wrap {
         width: 100%;