Accessing fields on QuickView Form (Control) through JavaScript in Dynamics 365

Suppose we have below Account’s Quick View Control on contact entity.

Now to access the email address attribute we can use the below Jscript on the Contact’s form onload event.

The result à email address field is hidden in the quick view form.

https://docs.microsoft.com/en-us/powerapps/developer/model-driven-apps/clientapi/reference/formcontext-ui-quickforms/isloaded

Hope it helps..