This tutorial will teach you how to create a JavaScript booking form for your site with Smart Forms. You will also learn how to add form validation and other...

Digital signatures are used everywhere, from verifying a file to securing a custom API. This tutorial shows you how to create a digital signature in Swift.

In the previous tutorial, you learned how to define common constraints in the data model. In this tutorial, I show you how you can define more advanced...

No matter what persistence framework an application uses, the developer decides what is stored in the application's persistent store. This also means that...

When you're dealing with complex and structured data, you need to determine whether the data is valid or not. JSON-Schema is the standard of JSON documents...

Validation is undoubtedly one of the most important aspects of good web design. And in a content management system like WordPress, you need to be careful...

Last time we created a reusable form in Symfony 2. Today, we'll build on to what we've learned, to now add form validation and form processing to our...

In this Nettuts+ mini-series, we'll build a web application from scratch, while diving into a great new PHP framework that's rapidly picking up steam, called...

Every day, when reviewing templates on ThemeForest, I test the submissions for validation and browser compatibility - not to mention my own work as well....