Shulou(Shulou.com)06/03 Report--

This article introduces the relevant knowledge of "the definition of valid, invalid and required in html5". In the operation of actual cases, many people will encounter such a dilemma, so let the editor lead you to learn how to deal with these situations. I hope you can read it carefully and be able to achieve something!

Css3 prompts apply only to advanced browsers:

Chrome

Firefox

Safari

IE9+

Definition of valid, invalid, required

: required

Must, then input can't be empty.

: valid

Valid, that is, triggered when the filled content meets the requirements.

: invalid

Invalid, that is, triggered when the filled content does not meet the requirements.

This is the end of the definition of valid, invalid and required in html5. Thank you for your reading. If you want to know more about the industry, you can follow the website, the editor will output more high-quality practical articles for you!

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