The Verj.io JavaScript API gives you the ability to interact with a running 
Form.
The top level of the API provides a number of key interfaces, including:
- form interact with a Form, including its
Fields, 
Tables, 
Pages and Controls, for example, form.fields.myField.value.
- pages interact with a Page, for example,
pages.myPage.controls.myControl.hide().
- controls interact with any Control added to any Page in the Form, for example,
controls.myControl.hide().
- fields interact with any Field added to the Form, for example,
fields.myField.value.
- tables interact with any Table added to the Form, for example,
tables.myTable.myColumn.value.
- resources interact with any Resource added to the Form, for example,
resources.myResource.fetch().