> ![](public_sys-resources/icon-note.gif) **NOTE** This component is supported since API version 8. Updates will be marked with a superscript to indicate their earliest API version.
> **NOTE**<br>
> This component is supported since API version 8. Updates will be marked with a superscript to indicate their earliest API version.
The **<Select\>** component provides a drop-down list box that allows users to select among multiple options.
| onSelect(callback: (index: number, value?:string) => void) | Invoked when an option in the drop-down list box is selected. **index** indicates the index of the selected option. **value** indicates the value of the selected option.|
| onSelect(callback: (index: number, value?:string) => void) | Invoked when an option in the drop-down list box is selected. **index** indicates the index of the selected option. **value** indicates the value of the selected option.|