But what if you flip the code on its head and type required="false"? My opinion is, that the following output example is a bad, but common mistake:
(XHTML) Let's get started with reviewing some of the ways attributes can be used to set various properties of an element. The best way to learn how to use HTML5 forms is to take a typical modern form and improve it. @fjpoblam – Interpretation of web standards is nothing new and we will always disagree in some cases. Several of the new form attributes are boolean, meaning their mere presence in the markup ensures the behaviour is set. But is it true that Safari is the one browser who does see as valid while all others don’t (some “bug” I remember reading about somewhere)? @Carlos, you can use it, you can use any obsolete element, it has no semantics though. The newer HTML5 header, footer, nav, and section elements fit the roles much better. You do understand how that journey is going to end, right? But still confuse who benefits all this new semantic ? With introduced in HTML5, we’re somewhat spoilt for choice when it comes to creating meaningful, structured markup. While cookies have been used to track unique user data for years, they have serious disadvantages. Very usefull article. One of the most common problems I see in people’s markup is the arbitrary replacement of
s with HTML5 sectioning elements — specifically, replacing wrapper
s (used for styling) with
s. If it’s a descendant of body (possibly with header or some divs between) it’s primary navigation for the site. @fjpoblam — “it is virtually impossible to write the ‘perfect’ HTML5 website”. HTML5 is awesome & these mistakes occur many times unintentionally.. What a brilliant article. For more detail you should read the W3C Note and Unicode I have no idea what you mean by your “classitis” comment though. Thanks to all for your feedback, some specific responses below: @gnur – you’re right you don’t need the trailing slash but can include it if you prefer to write your markup using XHTML syntax. Oli’s link to “your another medical blog” was pure win. @all — yup was a typo. You are just rearranging a few new elements with a big, smug grin on your faces. ), etc, etc. I find it interesting that you recommend NOT to use for pagination controls while your colleague Tom Leadbetter says that CAN BE considered for pagination according to the following link: http://html5doctor.com/nav-element/. Any content that is repeated on multiple pages (logos, search boxes, footer links, etc.) I guess if you don’t like HTML5 and the new elements it has introduced to help make the web a more semantic, accessible place then stick to writing HTML4. D. Use of The Appropriate Tag and/or Attribute For Your Intended Purpose Which should I use, and which should I avoid? for boolean attribute it’s cleaner to use as you suggest but is it really working evrywhere ? The element is used to draw attention to enclosed text without implying any added importance or emphasis. http://www.whatwg.org/specs/web-apps/current-work/#the-hgroup-element.
@Alvin – yes, we wrote an article about that recently. But I don’t understand why you want to do that, since role=main is probably only found on the main element, so surely, Yes, i’m use
not because I do not know how to styling attribute selector . HTML 5.1 – 4.5.14 The main element. Single-quoted 4. The real issue is the abuse of the element. In particular, it is common for footers to have a short list of links to various pages of a site, such as the terms of service, the home page, and a copyright page. @Erik, you’re right there’s a level of practicality to be applied. HTML or HTML . @Richard Clark: 8 and below – you can still pick out the elements that have the attribute with 9, even if the attribute has no value associated – and while the browser may have no native support for cool things like validation, having an attribute for required still works from a script point of view. Lolz, answered my own question: http://dev.w3.org/html5/spec/syntax.html#start-tags, Mmm, I should have read the side bar… Inconvenience of not having a preview facility… HTMLS - HyperText Markup LiveScript! The following example identifies the element as some kind of banner: The following example, often placed in a containing element, suggests that its content provides some information about the content within the containing element: An alert with dynamic content should use role="alert": This one is my personal favorite, which is used when an element is simply for presentation. Devices may or may not show a minus key. Applying that to our above example, we would write this (in HTML): It would be impossible for me to list here all the quirky markup patterns and practices I’ve come across, but these are some of the most frequently seen. Thanks to Ian Devlin, Derek Johnson, Tady Walsh, the HTML5 Gallery curators, and the HTML5 Doctors for their input to this article. It wasn’t that long ago that the push away from table based design lead to container style design in an attempt to clear out all the extraneous code and separate content from structure. Seems that the hgroup tag is still being considered for removal: A good Web browser should ideally support every tag and every version of HTML it can, because the various HTML version differences should be completely invisible to the Web site visitor.
The only time the following information should … HTML Navigational Element (