Mortgage repayment calculator

What are you most proud of, and what would you do differently next time?

• Use locale currency symbol
• Do not allow non-numeric characters
• Format amount while writing
• Allow dot and comma for the decimals
• Change between repayment and interest without re-send the form

I don't like the fixed height I had to set, will work on it

What challenges did you encounter, and how did you overcome them?

I wrote the format numbers function in a separate file but it didn't work on mobile, so moved it into the form component