HTML5 form field validation also works with numeric input types and with the “required” specification. Suppose we enhanced the above HTML to add an input field with “required” and another input field ...

HTML validation is more than catching missing tags—it’s about ensuring your site is standards-compliant, accessible, and optimized for performance. From W3C’s trusted Markup Validation Service to ...

Writing code to validate Web-form input can be even more of a chore than implementing form-processing logic. But help is at hand, thanks to the Struts 2 framework. Oleg Mikheev looks under the hood of ...