How to validate a Textarea with an editor?

Question

Django

People!
How do you validate fields to which editors are attached?
Because editors, if you just put a space, automatically create tags like p or br, and some even stamp them right away.
AP: Validation means mandatory.
Write regular expression in custom clean? Or are there solutions in JS (if we talk about validation on the client), or can janga do it itself?
Thank you for your responses.

Answer 1

take the value of the editor,
insert it into a div,
take the text of the div - this is if the tags do not need to be taken into account
, validate to the desired value,
for example, like this jsfiddle.net/nqgrneur