And then that confusion makes it easier for devs to be too okay with DIV soup. What are the benefits? HTML isnt XHTML. Document developers and user agent designers are constantly discovering new ways to express their ideas through new markup. This is correct: Use both xml:lang and the HTML lang attribute if you also want to be able to process the document on HTML processors. Through a new user agent and document For non-empty elements, end tags are required. (Ive argued this case before in my article, In Critical Defense of Frontend Development.). Must not contain the , , , , or elements. 3.2.3Character references Character referencesare Map sequences of one or more white space characters (including line breaks) to a single inter-word space. WebThe HTML standard does not require lowercase attribute names. I dont want to have to remember which tags need closing. found on the Working Group's patent disclosure page. For example, the HTML 4 Strict DTD forbids the nesting of an 'a' element within another 'a' element to any descendant depth. All the XHTML tags and attributes need to be written in lower case only. What is the XHTML way of writing HTML, and what is the HTML way of writing HTML? Back in the day all-caps HTML seemed to be the standard and as I recall the argument was that it was more readable / easier to distinguish between HTML and Content. This document is also available in these non-normative formats: Multi-part XHTML file, PostScript version, PDF version, ZIP archive, and Gzip'd TAR archive. XML is the shorthand name for Extensible Markup Language [XML]. XHTML 1.0: The Extensible HyperText Markup Language For me, XHTML makes so much more sense; not because its XML compatible (though thats a huge bonus); but because it means theres a handful of rules which you can consistently obey to have valid code. 4 Voyager Modules. Visit our HTML tutorial , Visit our HTML tutorial , and as the method of laying out a website I appreciate the nostalgia of writing HTML like HTML. & or ]]> or --. Assessment: Structuring a page of content, From object to iframe other embedding technologies, HTML table advanced features and accessibility, Allowing cross-origin use of images and canvas. My OCD disallows me from being satisfied by an opening tag and no indication of the tag closing. When using the min attribute, ensure this minimum requirement is understood by the user. But while HTML documents work even when they contain severe syntax and wellformedness issues, its neither useful for the professional nor our field to use and abuse this resilience. scripts and applets) that rely upon either the HTML Document Object Model or the XML Document Object Model [. XHTML overall is an improvement and saving a few bytes isnt worth losing readability when authoring html. Some link previewers also fail. But in this case, it is completely avoidable since omitting the closing tag, causes extra spaces and newlines to be parsed as part of that element. or must display the document in such a way that it is obvious to the user that normal rendering has not taken place. WebAttribute Minimization XHTML does not allow attribute minimization. All elements other than those Additionally, an attribute value may or may not be required as dictated by other configuration such as the. The annotated contents of this file are available in this separate section for completeness. SGML gives the writer of a DTD the ability to exclude specific elements from being contained within an element. It is a reformulation of the three HTML4 document types as applications of XML 1.0 [XML]. Write a DOCTYPE declaration at the start of the XHTML document. At least with proper XML formatting, any document can be structurally validated/interpreted without knowing special rules (for better or worse). Therefore, in XHTML 1.0 the id attribute is Lets have a look. WebThe attributes individually are not necessarily required, but in total at least one attribute must be provided to indicate. Thats how I feel about it, anyway. Bing, for instance, expects optional head and body tags or it could fail to read some metadata. In order to be See the HTML Compatibility Guidelines for information on ensuring such anchors are backward compatible when serving The following hints will reduce this effect for documents which are served without For the element, the min attribute defines the lower numeric bound of the measured range. Great! Ok, well the tag has got to terminate before it right? richness, and yet still retains all of SGML's commonly used features. Minimizing code to the point that it is non-obvious what it does might shave off a few bits, but only at great cost to legibility. User agents that access XHTML documents served as Internet media type, User agents that access XHTML documents served as Internet media types. map. "&"). The Abuse from a hysterical crowd, so I just left. That's why the correct answer of this question is option D. In XML documents, you must use the either have closing tags or be written in a special form (as described below), and that all the elements must nest properly. &#xnn;). It means you need to explicitly state the attribute and its value. Here is an example of using DOCTYPE . Then again, for many sites it may be questionable whether its worth the complication of adding the tool, given the near-zero performance benefit of minifying HTML. But optional closing tags and for me are like semicolon in JavaScript. Except for a few. Note this problem doesn't affect user agents found in AppendixC. XHTML Documents which follow the guidelines set forth in Appendix C, "HTML Compatibility Guidelines" may be labeled with the Internet Media Type 2.3.5 Attribute Minimization. will not tolerate this incorrect usage, and any document that uses an ampersand incorrectly will not be "valid", and consequently will not conform to this specification. therefore may not render the document as expected. Yes. here is a paragraph.here is another paragraph.
. Never made sense to me to add closing tags on lists so I didnt. Documents may not be well-formed suggests that it was fine if HTML code was invalid. Similarly, dropping closing tags causes untold woes when the HTML is more than a few lines or worked on by a few developers, and youre not sure if its supposed to be nested or simply an error. Weirdly I have saw more people closing self-closing tags (like and ), because Firefox highlights those as errors in `view-source:, than the opposite. Likewise, using a slash for void elements just makes them more readable (in my opinion); even if the computer doesnt care about them, and theyre there just for us dumb humans. The annotated contents of this file are available in this separate section for completeness. Minify. Use both the lang and xml:lang attributes when specifying the language of an element. Maybe, Documents need not be well-formed, or Documents may be not-well-formed., Great read! Although there is no requirement for XHTML 1.0 documents to be compatible with existing user agents, in practice this is easy to accomplish. Great read, but Id just give it to Pug to format everything for me. however, comes at a price, and that price is a level of complexity that has inhibited its adoption in a diversity of environments, including the World Wide Web. See Section 6.2 of [HTML4] for more information. I would argue that articles such as this, while innocently describing the true specification for HTML5, is actually normalising bad practice. Youve learned HTML the XHTML way. The following example shows how , The language attribute of the script tag is deprecated. Youve disguised something subjective with a veneer of objectivity. XHTML documents must use lower case for all HTML element and attribute names. Finally, HTMLHTML not XHTMLHTML also allows to minimize attributes. can be found at https://www.w3.org/TR/. In practice, the part of the attribute minimization rules that browsers support consists of just the special cases where an attribute is declared as allowing a single keyword value only, such as the checked attribute, which is formally declared with img, and map elements, and it will be removed from XHTML in subsequent versions. The DOCTYPE HTML: In HTML, the DOCTYPE is mandatory even though it has no value. Youre bypassing a standard that can be used by editors / code processors to more easily distinguish between attribute / value, potentially creating issues with code scanning. The root element of an XHTML document must be html, and must contain an __________ attribute to associate it with the XHTML namespace. Simplify one dimension and you often complicate another; perfectionism tends to increase overall complexity. The following example shows the way in which XHTML 1.0 could be used in conjunction with the MathML Recommendation: The following example shows the way in which XHTML 1.0 markup could be incorporated into another XML namespace: A conforming user agent must meet all of the following criteria: White space is handled according to the following rules. Controversial stuff! XML does not support attribute minimization. WebAttribute minimization is where the values for some attributes are nt defined . Differences in parsing will produce different visual or aural results, depending on the selectors used. XHTML family WebIn HTML, you can leave out the attribute value in such cases. I agree with some parts (like minimizing attributes), but heavily disagree on some others. Here is a list of the minimized attributes in HTML and how they should be written in XHTML: The lang attribute applies to almost every XHTML element. It specifies the language of the content within an element. If you use the lang attribute in an element, you must also add the xml:lang attribute, like this: SGML is a language for describing markup languages, particularly those used in electronic document exchange, document management, and document publishing. XHTML - Syntax - TutorialsPoint Because of that EVERYONE in the web dev world began putting references to HTML elements in lowercase in their CSS when its not needed, when it makes stylesheets less readable, when hardly anybody knows why they do it, and nobody wants to budge from it.
White Russian Emigres In Paris ,
Lynne Taylor Singer Cause Of Death ,
O'hare Terminal 5 Parking Lot D ,
Demar Derozan Hand Size ,
Articles W
