Custom Validation on client side

Hello @all.
My question is that can we add custom validation on frontend in anguler side that not replicate when we upgrade our crm.
second as this possible in Suitecrm 8 like i want to make validation on email in the contact on client side that there well be @ in email input and also required the field when empty.

Hi, welcome to the Community! :tada:

There is not much documentation for v8 yet, but here is something similar to what you need

Thank you for reply.