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HTML & CSS: The Complete Reference- P3

Tham khảo tài liệu 'html & css: the complete reference- p3', công nghệ thông tin, kỹ thuật lập trình phục vụ nhu cầu học tập, nghiên cứu và làm việc hiệu quả | 76 Part I Core Markup After seeing such an example you might wonder what the point is of this element because a span tag or maybe even an em tag could be used instead. Again semantics is the key to this element. It makes the meaning of HTML documents more obvious. Indicating Dates and Time Another semantic inline element time was introduced by HTML5 to indicate content that is a date time or both. For example p Today it is time 2009-07-08 time which is an interesting date. p as well as p An interesting date time for SciFi buffs is time 1999-09-13T09 15 00 time p would both be valid. The element should contain a date time value that is in the format YYYY-MM-DDThh mm ssTZD where the letters correspond to years months days hours minutes and seconds T is the actual letter T and ZD represents a time zone designator of either Z or a value like hh mm to indicate a time zone offset. However it seems reasonable that the time element would contain values that may not be in a common format but are recognized by humans as dates. If you try something like p Right now it is time 6 15 time . p it may be meaningful to you but it does not conform to HTML5. To provide both human-and machine-friendly date time content the element supports a datetime attribute which should be set to the previously mentioned date format of YYYY-MM-DDThh mm ssTZD. So the following example is meaningful because it provides both a readable form and a machine-understood value p My first son was born on time datetime 2006-01-13 Friday the 13th time so it is my new lucky day. p Online http htmlref.com ch2 time.html Similar to mark the time element has no predefined rendering though you could certainly define a look using CSS. Inserting Figures It is often necessary to include images graphs compound objects that contain text and images and so on in our Web documents all of which usually are called figures. Long ago HTML 3 tried to introduce the fig element to represent such constructs HTML5 reintroduces the .