1# app.js<a name="EN-US_TOPIC_0000001115814806"></a> 2 3You can implement lifecycle logic specific to your application in the **app.js** file. Available application lifecycle functions are as follows: 4 5- **onCreate\(\)**: called when an application is created 6- **onDestory\(\)**: called when an application is destroyed 7 8In the following example, logs are printed only in the lifecycle functions . 9 10``` 11// app.js 12export default { 13 onCreate() { 14 console.info('Application onCreate'); 15 }, 16 onDestroy() { 17 console.info('Application onDestroy'); 18 }, 19} 20``` 21 22