Two questions: person field null and child list item deletions

Forms SharePoint 2019
1

I am trying to check a person field for null, but I keep getting an error that the field "value is null". I am using
if(!(fd.field('personName')))
{ alert('Person Name is empty')};

Also, how do I ensure that child list items are removed if the parent is deleted?

2

Hello @rhonda,

To get the value of the field add the value property like so:

if(!fd.field('personName').value){ 
    alert('Person Name is empty')
};