1e41f4b71Sopenharmony_ci# PageAbility Overview 2e41f4b71Sopenharmony_ci 3e41f4b71Sopenharmony_ci 4e41f4b71Sopenharmony_ciPageAbility is an application component that has the UI and supports user interaction. 5e41f4b71Sopenharmony_ci 6e41f4b71Sopenharmony_ci 7e41f4b71Sopenharmony_ciWhen you create a PageAbility in DevEco Studio, DevEco Studio automatically creates template code. The capabilities related to the PageAbility are implemented through the **featureAbility** class, and the lifecycle callbacks are implemented through the callbacks in **app.js** or **app.ets**. 8