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HTML5 has both a regular text/html serialization and an XML serialization, which is also known as XHTML5. [70] The language is more compatible with HTML 4 and XHTML 1.x than XHTML 2.0, due to the decision to keep the existing HTML form elements and events model. It adds many new elements not found in XHTML 1.x, however, such as section and ...
In such circumstances, some authors conflate the two names as (X)HTML or X(HTML). Like HTML 4.01, XHTML 1.0 has three sub-specifications: strict, transitional, and frameset. Aside from the different opening declarations for a document, the differences between an HTML 4.01 and XHTML 1.0 document—in each of the corresponding DTDs—are largely ...
On 28 October 2014, HTML5 was released as a W3C Recommendation, [32] bringing the specification process to completion. [5] On 1 November 2016, HTML 5.1 was released as a W3C Recommendation. [33] On 14 December 2017, HTML 5.2 was released as a W3C Recommendation. [34]
<!DOCTYPE html>, case-insensitively. With the exception of the lack of a URI or the FPI string (the FPI string is treated case sensitively by validators), this format (a case-insensitive match of the string !DOCTYPE HTML) is the same as found in the syntax of the SGML based HTML 4.01 DOCTYPE. Both in HTML4 and in HTML5, the formal syntax is ...
[5] [6] In the HTML5 draft, there is no presentational element for strikethrough. However, there are two related semantic elements. Firstly, <s>, that is strikethrough in HTML 3 and 4, is redefined to mark text that is no longer correct, and secondly, <del> marks text that has been deleted, as it does in HTML 4.01. [7] [8]
The following tables compare general and technical information for a number of HTML editors.. Please see the individual products' articles for further information, comparison of text editors for information on text editors, and comparison of word processors or information on word processors, many of which have features to assist with writing HTML.
The meta element has two uses: either to emulate the use of an HTTP response header field, or to embed additional metadata within the HTML document. With HTML up to and including HTML 4.01 and XHTML, there were four valid attributes: content, http-equiv, name and scheme. Under HTML 5, charset has been added and scheme has been removed.
An HTML element is a type of HTML (HyperText Markup Language) document component, one of several types of HTML nodes (there are also text nodes, comment nodes and others). [ vague ] The first used version of HTML was written by Tim Berners-Lee in 1993 and there have since been many versions of HTML.