json菜单树过滤器

递归实现json菜单树过滤，过滤到匹配节点并保留其父节点

//递归过滤节点
         function nodeFilter(menuList, fiterName) {
             var reg = new RegExp(fiterName);
              var retMenuList = new Array();
             if (menuList && menuList.length > 0) {
                 for (var c of menuList) {
                     if (c.subModules) {
                         c.subModules = nodeFilter(c.subModules, fiterName);
                     }
                     if (c.thirdModules) {
                         c.thirdModules = nodeFilter(c.thirdModules, fiterName);
                     }
                     if ((c.subModules && c.subModules.length > 0)
                         || (c.thirdModules && c.thirdModules.length > 0)
                         || isMatch(c, reg)) {
                          retMenuList.push(c);
                     }
                 }
             }
             return retMenuList;
         }
        
        
         function isMatch(menu, reg) {
             return menu.heading.match(reg)
                 || pinyin.getFullChars(menu.heading).toLowerCase().match(reg)
                 || pinyin.getCamelChars(menu.heading).toLowerCase().match(reg);
         }