In your Field Settings page under Customize Field Settings it is mentioned that "This filter exposes the $field settings array for each field and allows customization to all settings."
Anyways, what I am trying to achieve cannot be done through HTML5 attribute for sure. Here's the case, kindly help me if you can:
I have used the Meta Box Builder to add a jQuery validation to my username field. It uses the remote parameter to ajax call a function and check if the username already exists before submitting the form. Now this works fine when I am creating a new post.
But when I try to edit the same post, the existing username is displayed in the field, and the ajax calls returns an error saying the username already exists - because it does.
So what I need to do is somehow stop the jQuery validation from firing when I am on the edit post page. How can this be achieved? Please understand that I am not using code but Meta Box Builder to create the Meta Box.