Title Dive Into HTML5; Author(s) Mark Pilgrim; Publisher: O'Reilly Media; 1 edition (August 25, ), eBook (Mark Pilgrim, ); Paperback pages; Language : English; ISBN ; ISBN Read and Download Links. Oct 22, ive Into HTML5 seeks to elaborate on a hand-pi ed Selection of features from the HTML5 specification and other fine Standards. e final. Dive Into HTML5 elaborates on a hand-picked selection of features from the HTML5 specification and other fine standards. We encourage you to buy the printed.
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There are thousands of books available for web designers and developers online. There has been no language, no point of discussion, or no trend that has not, at one time or another, been extensively explored and analyzed, and eventually published as an eBook. The great news is quite a lot of these books are available for free! And I have collected my favorites for you! Sadly, there are quite a few that have dropped off from and are no longer available. Rather than being a guide to solid web design, Resilient Web Design has been written to highlight some of the approaches and techniques to web design that have proven to be resilient over the years.
They might surprise you! Still hungry for more? Google, Inc. Short and sweet. As with marking up people, you need to set the itemscope and itemtype attributes on the outermost element. In this case, the outermost element is an element. In fact, some of it should already look familiar. Table lists the relevant properties.
Can contain the subproperties street-address, locality, region, postal-code, and country-name. Always contains two subproperties, latitude and longitude. The microdata property value is simply the text content of the element. In English, we just said: Marking up the address of an Organization works exactly the same way as marking up the address of a Person.
Telephone numbers are notoriously tricky, and the exact syntax is country-specific. In this example, we have a United States telephone number, in a format suitable for calling from elsewhere in the United States: The microdata property value is the value of the href attribute, not the link text. To date, all of our examples have focused on marking up visible data.
That is, you have an with a company name, so you add an itemprop attribute to the element to declare that the visible header text is, in fact, the name of an Organization.
Or you have an element that points to a photo, so you add an itemprop attribute to the element to declare that the visible image is a photo of a Person. There is no visible text that gives the exact latitude and longitude to four decimal places! In fact, the sample Organization page without microdata has no geolocation information at all. It has a link to Google Maps, but even the URL of that link does not contain latitude and longitude coordinates. It contains similar information in a Google-specific format.
Even if we had a link to a hypothetical online mapping service that did take latitude and longitude coordinates as URL parameters, microdata has no way of separating out the different parts of a URL. To handle edge cases like this, HTML5 provides a way to annotate invisible data. This technique should only be used as a last resort. If there is a way to display or render the data you care about, you should do so.
This happens more often than you think, and it will happen to you too. Still, there are cases where invisible data is unavoidable. Invisible data is the only option.
Dive Into HTML5 by Mark Pilgrim
The only saving grace here is that you can put the invisible data immediately after the visible text that it describes, which may help remind the person who comes along later and updates the visible text that she needs to update the invisible data right after it. In this example, we can create a dummy element within the same element as all the other Organization properties, then put the invisible geolocation data inside the element: Therefore, this element needs three attributes: All the properties within this element are properties of the Geo vocabulary http: The microdata property value is the content attribute.
Since this attribute is never visibly displayed, we have the perfect setup for unlimited quantities of invisible data. With great power comes great responsibility. In this case, the responsibility is on you to ensure that this invisible data stays in sync with the visible text around it. But organizations feature heavily in the next two case studies, events and reviews, and those are supported by Google Rich Snippets.
Marking Up Events Stuff happens. Some stuff happens at predetermined times. Google Developer Day Google Developer Days are a chance to learn about Google developer products from the engineers who built them. The URL for the Event vocabulary is http: And what are those properties? Table lists them. Event vocabulary Property Description summary The name of the event. This is a freeform string, not an enumerated attribute. According to Table , elements have no special processing.
So, all we need to do is add the itemprop attribute to declare that this element contains the name of the Event: Google Developer Day In English, this says: As you would expect, the photo is already marked up with an element.
Since Table says that the property value of an element is its src attribute, the only thing we need to do is add the itemprop attribute to the element: The next bit is something new. Events generally occur on specific dates and start and end at specific times. So the question becomes, how do we add microdata properties to these elements?
Looking back at Table , we see that the element has special processing. The value of a microdata property on a element is the value of the datetime attribute. And hey, the startDate and endDate properties of the Event vocabulary take an ISO-style date, just like the datetime property of a element. Once again, the semantics of the core HTML vocabulary dovetail nicely with the semantics of our custom microdata vocabulary.
Marking up start and end dates with microdata is as simple as: Using HTML correctly in the first place using elements to mark up dates and times 2.
Adding a single itemprop attribute: The definition of the Event vocabulary says that this can be either an Organization or an Address. In this case, the Event is being held at a venue that specializes in conferences, the Congress Center in Prague. Marking it up as an Organization allows us to include the name of the venue as well as its address. Any microdata properties we define here are properties of the most recently scoped vocabulary. Nested vocabularies are like a stack.
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There are also no more properties of the Organization, so we close the element that started the Organization scope and pop the stack again: The next property is geo, to represent the physical location of the Event.
This uses the same Geo vocabulary that we used to mark up the physical location of an Organization in the previous section.
We need a element to act as the container; it gets the itemtype and itemscope attributes. The last property is the url property, which should look familiar. I just mention it in passing to reiterate that a single page can have multiple events, each marked up with microdata. This one-day conference includes seminars and office hours on web technologies like Goo So how might Google choose to represent this sample page in its search results?
Again, I have to preface this with the disclaimer that this is just an example; Google may change the format of its search results at any time, and there is no guarantee that Google will even pay attention to your microdata markup.
It might look like Figure Sample search result for a microdata-enhanced Event listing After the page title and autogenerated excerpt text, Google starts using the microdata markup we added to the page to display a little table of events. Note the date format: We used two fully qualified ISO-formatted strings, T Google took those two dates, figured out that they were on the same day, and decided to display a single date in a more friendly format. Now look at the physical addresses.
This is made possible by the fact that we split up the address into five subproperties—name, street-address, region, locality, and country-name—and marked up each part of the address as a different microdata property.
Google takes advantage of that to show an abbreviated address. Other consumers of the same microdata markup might make different choices about what to display or how to display it. This is a real restaurant, by the way. What are the available properties in the Review vocabulary? Review vocabulary Property Description itemreviewed The name of the item being reviewed.
Can be a product, service, business, etc. Can also be a nested Rating using the http: Download from Library of Wow! The next two properties are also straightforward.
New York-style pizza right in historic downtown Apex Food is top-notch. The name of the reviewer is Mark Pilgrim, and the review date is March 31, How do we mark up these two distinct properties? In fact, the date in this example should have been marked up with a element in the first place, so that provides a natural hook on which to hang our itemprop attribute. The reviewer name can just be wrapped in a dummy element: The trickiest part of marking up a review is the rating.
But what if you want to use a different scale? Oh yes, it can.
Atmosphere is just right Further Reading Microdata resources: Read Chapter 2 for a conceptual introduction. Want an all-in-one library instead? Try Modernizr. List of Elements http: Worker; Undo http: Send email to index oreilly. He specializes in open source and open standards. Mark is the author of several technical books, including Dive Into Python APress and Dive Into Accessibility, a free online tutorial on web accessibility.
He lives in North Carolina with his wife, two boys, and a big slobbery dog. Up and Running is an alpine chamois Rupicapra rupicapra , a goat- or antelope-like species that is native to the mountain ranges of Europe, including the Carpathians, the Apennines, the Tatras, the Balkans, the Caucasus, and the Alps.
Alpine chamois live at relatively high altitudes, and have adapted to steep, rugged, and rocky terrain. They grow to a size of about 75 centimeters tall and weigh between 20 and 30 kilograms though individuals in New Zealand often weigh about 20 percent less than their European brethren.
Both males and females sport short horns that curve backward near the tip and fur that is dark brown during the summer and light gray in the winter. Many chamois also display a characteristically white face and rump, with black stripes under the eyes and along the back.
Adult male chamois live mostly solitary lives, only congregating once a year to compete for the attention of unmated females. Females, however, live in herds with their young. All variety of chamois are popular game animals; their meat is considered tasty and their leather is known to be exceptionally smooth and absorbent. Also, a tuft of hair taken from the back of the neck of a chamois, called a gamsbart, is traditionally worn as a hat decoration throughout the alpine countries.
This practice may be slightly more difficult in modern times, however, as some subspecies of chamois have gained protection from the European Union. The cover image is from J. Up and Running. Read more.
Orchard CMS: PayPal APIs: Cocoa and Objective-C: Java Web Services - Up and Running. Recommend Documents. You'll also learn how HTML5 can help you develop applications that: Display video directly in the browser, without having to rely on plugins Work even when a user is offline, by taking advantage of HTML5's persistent storage Offer a drawing canvas for dynamically generated 2-D graphics.
This concise guide is the most complete and authoritative book you'll find on the subject. Stay ahead of the curve. Order a copy of this book today.
He is the author of several technical books, including Dive Into Python APress and Dive Into Accessibility, a free online tutorial on web accessibility.
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HTML5: Up and Running
Click here to find out. English ISBN Display video directly in the browser, without having to rely on plugins Work even when a user is offline, by taking advantage of HTML5's persistent storage Offer a drawing canvas for dynamically generated 2-D graphics This concise guide is the most complete and authoritative book you'll find on the subject.
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