For example, a list of e-mail addresses or previous URLs might be provided for an input element with the appropriate type. HTML5 form field validation also works with numeric input types and with ...

You can validate your HTML against their standard and then validate ... you will know exactly where to start looking for possible problems. The type attribute of this tag is not needed anymore ...

data types, value ranges, and patterns (e.g. email addresses and credit card numbers), but ASP.Net Core can check for validation errors in submitted HTML form values automatically. A model state ...