June 2011
Intermediate to advanced
320 pages
7h 14m
English
Content preview from HTML5 Guidelines for Web DevelopersBecome an O’Reilly member and get unlimited access to this title plus top books and audiobooks from O’Reilly and nearly 200 top publishers, thousands of courses curated by job role, 150+ live events each month,
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7. Geolocation
The Geolocation API was removed from the core of the HTML5 specification and is, according to the W3C nomenclature, just in its early stages. But it is already largely implemented, particularly in mobile browsers. One reason for the rapid implementation is most likely because the interface is short and abstract: Only three JavaScript calls cover the whole range of functions. The specification does not state how the browser has to determine locations, only the format in which the result should be returned.
After a brief introduction regarding the nature of geographical data, we will demonstrate the new functions using several brief examples. If you try our examples on a smartphone, you will quickly experience that Aha! Effect.
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