问题
Usually, a submit button works fine without a name attribute. However, there are occasions where there's a need to have two submit buttons for the same form, hence making use of the name attribute to identify which button was clicked on the server side.
To clarify I am talking about: <input type="submit" name="foo">
回答1:
Yes, it is entirely acceptable.
The specification has explicit rules for how to determine which submit button was successful, which would be useless if you couldn't give the element a name.
来源：https://stackoverflow.com/questions/16387519/is-it-acceptable-for-a-submit-button-to-have-a-name-attribute