How to handle data that is null in firestore?

Question

I was wondering how to handle data that is null in firestore?

I'm currently checking that the value I am looking for is null, but I was wondering if there was a better way.

What I have at the moment is this:

if(!!doc.data().field)

But this is very verbose for many fields.

Answer 1

i prefer this way

if(doc.data().field != null && typeof doc.data().field != 'undefined' && !isNaN(doc.data().field ))