docs: function getNeedLoad (resource) {
          if (JSON.stringify(loadedResource) == '{}') {
              getLoadedScript();
          }
  
          var needLoad = [];
          if(typeof resource === "string") {
              needLoad = [resource]
          } else if(Object.prototype.toString.call(resource) === "[object Array]") {
              for (var i = 0; i < resource.length; i++) {
                  if(loadedResource[resource[i]] !== LOADED) {
                      needLoad.push(resource[i]);
                  }
              };
          }
  
          if(needLoad.length === 0) {
              needLoad = null;
          }
  
          return needLoad;
  
      }