What is a novalidation attribute in forms, html5?

Answer 1

You must mean "novalidate" instead of "novalidation". Novalidation is not an attribute of form elements in HTML5.

The novalidate attribute is a boolean attribute.

When present, it specifies that the form-data (input) should not be validated when submitted.

I copied that from:
https://www.w3schools.com/tags/att_form_novalidate.asp

Try it for yourself at:
https://www.w3schools.com/tags/tryit.asp?filename=tryhtml5_form_novalidate
See how differently the form behaves when submitting an invalid email address with and without the novalidate attribute.

Answer 2

Oh thank you