Is JavaScript validation bad?

Question

It has been long time since we have been validating our forms using JavaScript. I am sure this must be the case with most other developers.

Question:

What if the

Answer 1

If you're looking to save time, go with server-side only. If you want better performance and user experience, add client-side validation afterward. Never rely on client-side validation, for the reasons you state. All critical validation should occur on the server ... even if duplicated on the client.