links for 2011-06-03
著
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"This site provides a collection of schemas, i.e., html tags, that webmasters can use to markup their pages in ways recognized by major search providers."
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"As things stand, if ARIA roles, states and properties are used on HTML elements with a doctype other than <!DOCTYPE html> a developer will get unhelpful error messages when using an HTML validator simply because the DOCTYPE they are using does not recognise ARIA attributes as valid."
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"LinkChecker is a free, GPL licensed URL validator."
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"The purpose of HTML5 is to evolve the Web using and extending familiar technologies while preserving backwards compatibility."
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"This luminous night view of the space shuttle orbiter Endeavour, docked with the International Space Station for a final time, was captured on May 28."