Many top websites have invalid homepage HTML, yet still rank well. Machine-readable elements must be accurate, even if the rest of the HTML isn’t. SEO success depends on user-focused strategy, not ...

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 ...

We say that Tim Berners-Lee invented the World Wide Web, and that's certainly true. But, we can boil the Web down to three specific technologies: URLs (for uniquely identifying resources on the ...

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 ...

A recent tweet from Google’s Gary Illyes called attention to problem of invalid HTML. Google is fine with invalid HTML. Less well known is that there are negative outcomes associated with invalid HTML ...

When Google updated their Webmaster Guidelines yesterday, one of the changed was changes was around valid HTML. Before it read, "Check for broken links and correct HTML." and now it reads "Ensure that ...

The topic of HTML validation has been covered here time and time again - we know Google doesn't downgrade or boost a web site with bad or good HTML validation. We also know that there are cases were ...

I’ve been writing HTML since the late ‘90s, and while the web has evolved in a hundred different ways, the core of it really hasn’t. You still open a file, structure your markup, style it with CSS, ...