This is not a tutorial but a learning memo on using Protobuf v2.5.0 in Cocos2d-JS v3.10. Main Content Demo (cpp/java/python/js) Create Instance Serialize to String Serialize to File Parse from String Parse from File Dump GameInfo Instance Relection Dump Message Relection Generate Message Load Proto Encode / Decode / js Excel .xls to ProtoBuf .bin / Python Protobuf-2.5.0 Generated libs CocosProtobu