1e41f4b71Sopenharmony_ci# Web Subsystem Changelog 2e41f4b71Sopenharmony_ci 3e41f4b71Sopenharmony_ciCompared with earlier versions, OpenHarmony 4.0.6.1 has the following API changes in its web subsystem: 4e41f4b71Sopenharmony_ci 5e41f4b71Sopenharmony_ci## cl.web.1 Parameters in createWebMessagePorts 6e41f4b71Sopenharmony_ci 7e41f4b71Sopenharmony_ciAdded an optional parameter to the **WebMessagePort** API to accommodate more data types. 8e41f4b71Sopenharmony_ci 9e41f4b71Sopenharmony_ci**Change Impact** 10e41f4b71Sopenharmony_ci 11e41f4b71Sopenharmony_ciNone (The added parameter is optional, and the API is forward compatible.) 12e41f4b71Sopenharmony_ci 13e41f4b71Sopenharmony_ci**Key API/Component Changes** 14e41f4b71Sopenharmony_ci 15e41f4b71Sopenharmony_ci- Involved APIs: 16e41f4b71Sopenharmony_ci 17e41f4b71Sopenharmony_ci createWebMessagePorts(): Array\<WebMessagePort>; 18e41f4b71Sopenharmony_ci 19e41f4b71Sopenharmony_ci- Before change: 20e41f4b71Sopenharmony_ci 21e41f4b71Sopenharmony_ci ```ts 22e41f4b71Sopenharmony_ci createWebMessagePorts(): Array<WebMessagePort>; 23e41f4b71Sopenharmony_ci ``` 24e41f4b71Sopenharmony_ci 25e41f4b71Sopenharmony_ci- After change: 26e41f4b71Sopenharmony_ci 27e41f4b71Sopenharmony_ci ```ts 28e41f4b71Sopenharmony_ci createWebMessagePorts(isExtentionType?: boolean): Array<WebMessagePort>; 29e41f4b71Sopenharmony_ci ``` 30e41f4b71Sopenharmony_ci 31e41f4b71Sopenharmony_ci**Adaptation Guide** 32e41f4b71Sopenharmony_ci 33e41f4b71Sopenharmony_ciN/A 34