Fire jQuery on change of Subgrid (CRM Portal)?

Hi,

I have a web form which are using web form steps.

One of my step is reading from a tab that contains a sub-grid and a field I want to update.

Is there a way to set my field on change of the sub-grid.

For e.g. Deleting a record from subgrid will then update my field or creating a new record from Subgrid will update my field?

Thanks.