Creating A Custom HTML5 Form Validation

In his blog post on HTML5 forms and IE10 Mobile, Andrea explained HTML5 forms and what is new in Internet Exporer 10 Mobile, so you should now have some understanding of HTML5 form validation. To summarize, HTML5 eases the pain of writing extra logic to validate users’ form inputs, letting you create usable forms with a little or no scripting.

In this tutorial, I will show you a practical example of creating a custom validated form  with CSS3, web fonts, and a bit of JavaScript (or not).
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Measuring site performance with JavaScript on mobile

There is a lot of talk around responsive Web design being too slow or too resource intensive and that other methodologies can achieve better performance. I don’t want to go into the details of which approach is better because I think different scenarios require different solutions. What is certainly true in all cases is that a Web site or app that loads faster is better than one that is slow. Companies like Google, Gomez and Akamai have all published papers and survey results showing how speed affects user perception of a service from your desktop computer and even more on a mobile device (KISSmetrics has also drawn a nice infographic for the lazy ones). This is the first article and another one will follow shortly. Continue reading

HTML5 forms (and IE10 (Mobile))

One of the many improvements introduced by HTML5 is around forms, users hate filling forms and developers hate validating the data submitted. HTML5 makes these tasks a lot simpler.
In this article I will not talk about what HTML5 added, but I will rather focus on what is new in IE10 mobile, i.e. the browser that comes with Windows Phone 8. At the end of the article I have collected a few useful links that cover HTML5 forms at large and provide more examples and complete support tables. All the code examples are meant to be cross-browser, unless specified. Continue reading