Folks new to web development may not know that form inputs using the file type are read only. [...] However, just because the field is read only doesn’t mean we can’t do cool stuff with it. Post written by Raymond Camden.

One of the fundamental tasks to perform in an API is data validation. In this article, I’d like to show you how to add bulletproof validation for your data in a way that also returns it nicely formatted. Post written by Andrej Adamcik

A declarative, efficient, and flexible JavaScript validation library for Humans. V4f provides a lot of rules that you can use to build complex validation without the need to be a javascript expert.