The official website explains these two methods:
select: When the user manually checks the CheckBox of the data row, the event triggered, parameters: selection, row
selection-change: This event will be triggered when the option changes, parameter: selection
You can define these two methods and print them to see when they will trigger
When one option is checked, both methods will be triggered. When checking Select All, only the selection-change method will be triggered.
The selection parameter passed by the two methods is: rendering the object data of the row