| id | string | Yes | Unique ID of the component. The value can contain a maximum of 128 characters. |
| type | string | Yes | Type of the component. The options are as follows:<br>-**surface**: The content of this component is displayed individually, without being combined with that of other components.<br>-**component**: The content of this component is displayed after having been combined with that of other components.<br>This API is defined but not implemented in OpenHarmony 3.1 Release. It will be available for use in OpenHarmony 3.1 MR.|
| libraryname | string | No | Name of the dynamic library generated after compilation at the application native layer. |
| controller | [XComponentController](#XComponentController) | No | Controller bound to the component, which can be used to invoke methods of the component. |
| onLoad(context?: object) => void | Triggered when the plug-in is loaded.|
| onDestroy() => void | Triggered when the plug-in is destroyed.|
## XComponentController
Defines the controller of the **\<XComponent>**. You can bind the controller to the **\<XComponent>** to invoke the component methods through the controller.
### Creating an Object
```
xcomponentController: XComponentController = new XComponentController()
```
### getXComponentSurfaceId
getXComponentSurfaceId(): string
Obtains the ID of the surface held by the **\<XComponent>**. The ID can be used for @ohos interfaces, such as camera-related interfaces.
- Return value
| Type | Description |
| ------ | --------------------------- |
| string | ID of the surface held by the **\<XComponent>**.|
