input =

input.text | input.password | input.checkbox | input.radio | input.button | input.submit | input.reset | input.file | input.hidden | input.image | input.datetime | input.datetime-local | input.date | input.month | input.time | input.week | input.number | input.range | input.email | input.url | input.search | input.tel | input.color

An input element with no type attribute specified represents the same thing as a input element with its type attribute set to "text".