refactoring javascript to put starring functionality in a function

app/views/projects/buttons/_star.html.haml

@@ -16,11 +16,13 @@
       var $this = $(this);
       var $starSpan = $this.find('span');
       var $starIcon = $this.find('i');
+
+      var toggleStar = function(isStarred) {
         $this
           .parent()
           .find('span.count')
           .text(data.star_count);
-      if($starSpan.hasClass('starred')){
+        if(isStarred){
           $starSpan
             .removeClass('starred')
             .text('Star');
@@ -36,6 +38,9 @@
             .removeClass('fa-star-o')
             .addClass('fa-star');
         }
+      };
+
+      toggleStar($starSpan.hasClass('starred'));
     })
     .on('ajax:error', function (e, xhr, status, error) {
       new Flash('Star toggle failed. Try again later.', 'alert');