One thing I myself found out only recently was that you can do validation of inputs directly with HTML. Eg adding type="email" will validate the input for email

One thing I myself found out only recently was that you can do validation of inputs directly with HTML. Eg adding type="email" will validate the input for email or you can use custom pattern with regex to validate them as you'd like. Granted with regex it gets pretty messy but in general it's a good first version if you don't have specific UI requirements for the error messages. Also I think the errors are automatically displayed in the user's system language. https://www.w3schools.com/html/tryit.asp?filename=tryhtml5_input_pattern https://www.w3schools.com/html/tryit.asp?filename=tryhtml5_i...