Html5 Game Tutorial For Beginners Pdf
Simply is sufficient. The other forms are there for compatibility with XHTML; to make it possible to write the same code as XHTML, and have it also work as HTML. Some systems that generate HTML may be based on XML generators, and thus do not have the ability to output just a bare tag; if you're using such a system, it's fine to use, it's just not necessary if you don't need to do it.
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Very few people actually use XHTML, however. You need to serve your content as application/xhtml+xml for it to be interpreted as XHTML, and that will not work in old versions of IE - it will also mean that any small error you make will prevent your page from being displayed in browsers that do support XHTML. So, most of what looks like XHTML on the web is actually being served, and interpreted, as HTML. See for some more information. I think this quote from the provides the answer: Some elements, however, are forbidden from containing any content at all. These are known as void elements. In HTML, the above syntax cannot be used for void elements.
For such elements, the end tag must be omitted because the element is automatically closed by the parser. Such elements include, among others, br, hr, link and meta HTML Example: In XHTML, the XML syntactic requirements dictate that this must be made explicit using either an explicit end tag, as above, or the empty element syntax. This is achieved by inserting a slash at the end of the start tag immediately before the right angle bracket. Example: Authors may optionally choose to use this same syntax for void elements in the HTML syntax as well. Some authors also choose to include whitespace before the slash, however this is not necessary. (Using whitespace in that fashion is a convention inherited from the compatibility guidelines in XHTML 1.0, Appendix C.). XML doesn't allow leaving tags open, so it makes a bit worse than the other two.
Html5 Game Tutorial For Beginners Pdf
The other two are roughly equivalent with the second preferred for compatibility with older browsers. Actually, space before / is preferred for compatibility sake, but I think it only makes sense for tags that have attributes. So I'd say either or, whichever pleases your aesthetics. To sum it up: all three are valid with the first one being a bit less 'portable'. Edit: Now that we're all crazy about specs, I think it worth pointing out that according to: Start tags consist of the following parts, in exactly the following order:. A ' character.
'HTML5 is not XML, so it should not pose such a requirement.' Whether that is correct or not depends on the interpretation of the word 'HTML5'. If we speak of HTML5 as language, then that statement is correct. If however we speak of HTML5 as a specification, then that statement is incorrect. The HTML5 specification defines 'a vocabulary and associated APIs for HTML and XHTML'.
I know that's a bit nitpicking, I'm not saying this answer is wrong, just giving additional information for the reader. – Nov 8 '16 at 22:11. If you are outputting HTML on a regular website you can use or, both are valid anytime you are serving HTML5 as text/html. If you are serving HTML5 as XHTML (i.e.
Content type application/xhtml+xml, with an XML declaration) then you must use a self closing tag like so:. If you don't the some browsers may flat out refuse to render your page (Firefox in particular is very strict about rendering only valid xhtml+xml pages). As noted in 1. Is also valid for HTML5 that happens to be generated as XML but served as a regular text/html without an XML declaration (such as from an XSL Transform that generates web pages, or something similar).
To clear up confusion: Putting a space before the slash isn't required in HTML5 and doesn't make any difference to how the page is rendered (if anyone can cite an example I'll retract this, but I don't believe it's true - but IE certainly does a lot of other odd things with all forms of tags). The excellent validator at is really helpful for checking what's valid (although I'm not sure you can rely on it to also check content-type).