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Timestamp field from firestore showing an invalid date if the field does not exist

These are my codes. selectedDate is a timestamp field:

<ListItemText
                          primary={
                            new Date(
                              user.items?.selectedDate?.seconds * 1000
                            ).toDateString() +
                            " at " +
                            new Date(
                              user.items?.selectedDate?.seconds * 1000
                            ).toLocaleTimeString()
                          }
                    />

It does show the data correctly. However, if the selectedDate does exist, it will show:

Invalid date at Invalid date

How can I fix this?

about 4 years ago · Juan Pablo Isaza
1 answers
Answer question

0

As Doug commented, you'll want to check whether the document has a `` field, before trying to convert its value to a date. Something like this should do the trick:

<ListItemText
  primary={user.items?.selectedDate ? (
    new Date(
      user.items?.selectedDate?.seconds * 1000
    ).toDateString() +
    " at " +
    new Date(
      user.items?.selectedDate?.seconds * 1000
    ).toLocaleTimeString()
  ) : "No date" }
/>
about 4 years ago · Juan Pablo Isaza Report
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