to produce and consume information about types of content for which HTML doesn't yet include nouns. The most prominent of these are WAI-ARIA, Microformats, and Schema.org.
Web crawlers understand some of these side-contracts,
oCanvas is a JavaScript library intended to make development with HTML5 Canvas easier. Instead of working with pixels, you work with objects. It's very straightforward and easy to get started with. Please have a look at the examples to see just how easy it is.
Get the meta element out of your markup and and send the header over HTTP instead.
On Apache, add this to your root .htaccess file:
Header set X-UA-Compatible "IE=edge"
Update 10 August 2012: in response to a query, I checked again and pubdate is gone from both the WHATWG and W3C specs.
Previously, you could only mark up precise dates. So, 13 November 1905 could be expressed in HTML <time datetime="1905-11-13"> but November 1905 couldn’t be. This is a problem for historians where sometimes the precise date isn’t known.
Neither can you indicate date ranges. To mark up From “21/02/2012 to 25/02/2012″, use two separate <time> elements.
A figure can be used with or without a figcaption. However, without a caption, or an alternate means of providing an accessible name (e.g. aria-label) a figure may not provide much value in conveying its semantics alone. In some cases, it may not convey any semantics at all if its given no accessible name.
Compared to <link>s, @import is slower, adds extra page requests, and can cause other unforeseen problems. Avoid them and instead opt for an alternate approach
Compile your CSS with a preprocessor like Sass or Less into a single file
Place media queries as close to their relevant rule sets whenever possible.
Limit shorthand declaration usage to instances where you must explicitly set all available values.
Avoid unnecessary nesting. Just because you can nest, doesn't mean you always should. Consider nesting only if you must scope styles to a parent and if there are multiple elements to be nested.
For a complete list of properties and their order, please see
The schema.org vocabulary can be used with both Microdata or RDFa 1.1 Lite syntax, and it has
types for Event, Organization, Person, Product,
Review, AggregateRating, Offer and hundreds of others.
The schema.org vocabulary can be used with both Microdata or RDFa 1.1 Lite syntax, and it has types for Event, Organization, Person, Product, Review, AggregateRating, Offer and hundreds of others.