show custom Validation error messages

[AngelAlphy]

Description:

we want to generate a dynamic form using drag and drop form builder .In that form there are email and phone number text fields, we would like to add custom validation and custom error message , Is that possible to show validation message?

Ex: if we generate an email field we should give a regex for validation , while typing the value if regex appears wrong.
The validation message should appear below the text field as "Enter a valid email".

[lucasnetau]

The majority of browsers already offer validation (https://developer.mozilla.org/en-US/docs/Web/HTML/Element/input/email#validation)

If you want to do custom validation messages you can use hook into the submit event and provide a custom messages

A custom type attr can be added called 'pattern' to set a regex