1# Class (FullScreenExitHandler) 2 3Implements the **FullScreenExitHandler** object to notify you that the **Web** component exits full screen mode. For details about the sample code, see [onFullScreenEnter](./arkts-basic-components-web-events.md#onfullscreenenter9). 4 5> **NOTE** 6> 7> - The initial APIs of this component are supported since API version 8. Updates will be marked with a superscript to indicate their earliest API version. 8> 9> - The initial APIs of this class are supported since API version 9. 10> 11> - You can preview how this component looks on a real device, but not in DevEco Studio Previewer. 12 13## constructor<sup>9+</sup> 14 15constructor() 16 17Constructs a **FullScreenExitHandler** API. 18 19**System capability**: SystemCapability.Web.Webview.Core 20 21## exitFullScreen<sup>9+</sup> 22 23exitFullScreen(): void 24 25Exits full screen mode. 26 27**System capability**: SystemCapability.Web.Webview.Core 28