This is a live form, not a screenshot — fill it in and submit it. The code tab is the exact file that is running, read from disk at build time, so the two cannot drift.
The form everyone builds and most get wrong in the same two ways: the card number is stored with its spaces, and the tip is a float. Neither is possible here. Note the stepper layout on the tip field — money fields in a checkout are usually adjusted, not typed.