Sep 25, 2008 · Also, please note that it's "HTML 4", not "HTML4". Indeed, for HTML 5, both variants are used, but there is an important difference in meaning. HTML 5 refers to the name of the W3C specification, whereas "HTML5" is the document type of those HTML files with a text/html MIME type that follow this spec. The same goes for XHTML 5 vs. XHTML5.

Sep 15, 2009 · XHTML5 stands for "XML Serialization of HTML5" and is an XML syntax for HTML5 that can be used when serializing a DOM tree back into HTML5 (a DOM tree looses the ability to distinguish between tag soup tags and properly tags) and must adhere to the stricter XML rules and namespaces.

Jun 7, 2013 · With no closing tag. Closing tags is optional in HTML5, but required in XML-based formats like XHTML. You can, if you choose, close tags in regular HTML5; this is generally a good idea as it allows your HTML to be parsed by XML processors.

May 22, 2019 · In other words, if you have an HTML file, its contents are HTML, no matter if it has valid XML in it or not. One point about the syntax rules worth mentioning is the casing of tag names. Although HTML documents are case-insensitive, the tag names are actually exposed as uppercase by the DOM.

Here is some food for thought. If you had been using all .htm files on your website and now, for example, you have changed the editor that you are using, and your new editor is outputting all your files with the .html extension. When you re-publish your site to the server, it would seem to me that you could really hurt your SEO position/ranking as many of th

Dec 16, 2023 · In the W3 wiki page about structuring HTML5, it says: <section>: Used to either group different articles into different purposes or subjects, or to define the different sections of a single article.

Jul 9, 2022 · There is one more difference between <iframe> and <embed>: if you update the src of an iframe programmatically (e.g. through script or data binding), it will add a navigation history entry to your browser, so if the user hits the back button, it goes back to the state before the src was changed. This sometimes is an undesired behavior.

Apr 3, 2013 · @ExplosionPills: It actually does it in kind of backwards way. Whereas traditional HTML specified & only as an entity marker, HTML5 specifically forbids only "ambiguous ampersands." It's in the "HTML Syntax" section of the spec. –

Aug 9, 2016 · I have an assignment which requires that I make a website and I have to decide between HTML+CSS and HTML5+CSS3, which I am unclear what the difference is, or which is easier. Could you please answer the following : Which is easier: HTML or HTML5? CSS or CSS3; Can I combine HTML with CSS ? Can I combine HTML5 with CSS ?

Dec 22, 2009 · Both <br> and <br /> are acceptable in HTML5, but in the spirit of HTML, <br> should be used. HTML5 allows closing slashes in order to be more compatible with documents that were previously HTML 4.01 and XHTML 1.0, allowing easier migration to HTML5.