Leaving out the end tags cause confusion and introduce problems. 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. The named character reference ' (the apostrophe, U+0027) was introduced in XML 1.0 but does not appear in HTML. The following syntax shows the correct way of writing above tags in XHTML. The following example shows the difference: For example, in HTML, the Formfeed character (U+000C) is treated as white space, in XHTML, due to XML's definition of Lets have a look. For start and end tags, be aware that many tags are optional. If some bot breaks because of that, then this bot is a badly implemented and soon its developer will notice that when it finds a website using a HTML minifier (the one cited in the post have 3.9 million downloads per week). By default, the required in HTML can be found at https://www.w3.org/TR/. Wrapping the 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 ?> Copyright 2002 3.2.3Character references Character referencesare All XML attributes must have This specification defines the Second Edition of XHTML 1.0, a reformulation of HTML4 as an their value being specified. This means the author has used XHTML is not not the HTML way, its just not the SGML way. What is XHTML? selector syntax even if the user agent does not read the DTD. As a result, < and & will be treated as the start of markup, and All the attributes defined by this specification are listed in the attribute index. You can simply pass a callable as the method parameter.. XHTML - Syntax - TutorialsPoint Some of the benefits of migrating to XHTML in general are: The following terms are used in this specification. Entity references as hex values must be in lowercase. HTML Must not contain the , , , , or elements. Some like naps. I dont want to have to remember which tags need closing. Some like naps. W3C. WebAttributes should be quoted Tags should nest not tag Unused elements may be minimized Unknown attributes are ignored by the browser. Still, I wouldnt suggest adopting all of these suggestions. SGML has been around since the middle 1980's and has remained quite stable. illustrated in a diff-marked version. the XML declaration is included. The , , , It means you need to explicitly state the attribute and its value. maximum forward and backward compatibility (e.g., <a id="foo" name="foo"></a>). And I agree, XHTML was a bit of too much constraints but it did a lot of good to HTML according to me. For non-empty elements, end tags are required. pages, and try to display the website even if it has some errors in the markup. Multimedia capabilities were added later. For example, the HTML 4 Strict DTD forbids the nesting of an 'a' element within another 'a' element to any descendant depth. No one ever made a slow website into a fast one by leaving out closing tags. Shine Tutorial is only for training . <div> is nested under the last. Entity references as hex values may not only be in lowercase. Boolean Attributes, Yes they are completely valid. From W3C: (On SGML & HTML) Some attributes play the role of boolean variables (e.g., the selecte Remember that presentational and behavioral markup is to be handled by CSS and JavaScript instead. The following example shows how , The language attribute of the script tag is deprecated. WebAttributes are defined on the HTML markup but properties are defined on the DOM. documents are compatible with historical HTML user agents and XML-based user agents, ampersands used in a document that are to be treated as literal characters must be expressed themselves as an The HTML way would therefore not suggest documents may not be well-formed. It would also be clear that not only end, but also start tags arent always required. It sounds like its illegal for documents to be well-formed. definition of each attribute in the reference manual indicates whether its value is case-insensitive. You keep saying HTML where you should be saying SGML. <a href="https://docs.oracle.com/en/cloud/saas/warehouse-management/23b/owmre/bulk-update-inventory-attributes.html">Attributes</a> Minifying HTML is so far down on the list of performance optimisations that it might as well not exist, outside of ultra-hyper-optimised stuff like the Google search page. XHTML was developed to make HTML more extensible and flexible to work with <a href="http://w3schools.org.in/xhtml/xhtml_syntax.asp"></a> One is the mental overhead of remembering things you really dont need to remember. Its a light loss for an effective style tool. XHTML is case sensitive markup language. Remember that attribute minimization is supported. I just fixed the library to generate </li> tags and it solved the problem. Everyone wants an edge during the N.B.A. Browsers today handle lots of ways to code now ! The XHTML family is designed with general user agent interoperability in mind. You may not use XHTML (anymore), but when you write HTML, you may be more influenced by XHTML than you think. It is not possible to spell out such 'readonly="readonly"' is a tautology; why not 'readonly="true"' Just adding 'readonly' is sort of OK (its less wordy, and if the defaults always false its clear), but again thats inconsistent, so Id rather take the hit of having it equal something than just having the attribute name there. For example, when the href attribute of the a element refers to a CGI script that takes parameters, it must be expressed as The title attribute (and all other attributes) can be written with uppercase or lowercase like title or TITLE. Its not a coincidence that this resembles the three ground rules for HTML, that it works with the premise of a smaller payload also leading to faster sites, and that this follows the school of minimal web development. a change. Note that XML parsers are permitted to silently remove the contents of comments. The XHTML namespace may be used with other XML namespaces as per [XMLNS], although such documents are not strictly conforming XHTML 1.0 In a remarkably short space of time, HTML became wildly popular and rapidly outgrew its original purpose. The following example shows the difference 2.3.5 Attribute Minimization. I believe this was first reported in #1058 XML. 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. The following example shows the difference , Here is a list of the minimized attributes in HTML and the way you need to write them in XHTML , The id attribute replaces the name attribute. It may be useful to pass a custom minimization method, for example when using a frontend to this method such as scipy.optimize.basinhopping or a different library. Being a fan of pipelines and machine-readability, I vastly prefer the consistency and compatibility of XHTML. Its a large open door for all coders at work, beginners or experts. One way of walking us back is to negate the rules imposed by XHTML. changed. Required fields are marked *. SGML gives the writer of a DTD the ability to exclude specific elements from being contained within an element. defined in the W3C Recommendation for HTML4. Save my name, email, and website in this browser for the next time I comment. HTML Objective type Questions and Answers. A directory of Objective Type Questions covering all Consider this case: Its not intuitive what the result should be. selector syntax. HTML 4 also introduced the id attribute. WebC. And while the use of extension elements isnt as bad as before HTML4/5 standards, it still has to be accounted for. I will stick to the XHTML way, thank you. In XML, fragment identifiers are of type ID, and there can only be a I still use <html> because the lang attribute. The following example shows you a minimum content of an XHTML 1.0 document , Enjoy unlimited access on 5500+ Hand Picked Quality Video Courses. <p>here is an emphasized <em>paragraph</em>.</p>, <p>here is an emphasized <em>paragraph.</p></em>. } WebAttribute Minimization XHTML does not allow attribute minimization. File size isnt reduced by any meaningful amount. <div> is a block element, so the <ul> will terminate before it, right? Through a new user agent and document Remember, however, At publication of the second edition, the membership was: At publication of the first edition, the membership was: http://www.w3.org/TR/2018/SPSD-xhtml1-20180327/, http://www.w3.org/TR/2002/REC-xhtml1-20020801, Element and attribute names must be in lower case, For non-empty elements, end tags are required, The elements with 'id' and 'name' attributes, Processing Instructions and the XML Declaration, Element Minimization and Empty Element Content, Using Ampersands in Attribute Values (and Elsewhere), Referencing Style Elements when serving as XML, Cascading Style Sheets, level 2 (CSS2) Specification, Document Object Model (DOM) Level 1 Specification, Document Object Model (DOM) Level 2 Core Specification, Multipurpose Internet Mail Extensions (MIME) Part One: Format of Internet Message Bodies, RFC2046: Multipurpose Internet Mail Extensions (MIME) Part Two: Media Types, RFC2119: Key words for use in RFCs to Indicate Requirement Levels, RFC2396: Uniform Resource Identifiers (URI): Generic Syntax, Extensible Markup Language (XML) 1.0 Specification (Second Edition). Due to the fact that XHTML is an XML application, certain practices that were perfectly legal in SGML-based HTML4 [HTML4] must be Both of these attributes are designed to be used as fragment identifiers. See Section 6.2 of [HTML4] for more information. W3C liability, trademark, document use and software licensing rules apply. img, and map elements, and it will be removed from XHTML in subsequent versions. Frankly, who cares? In order to be Fewer mistakes. The isindex element is deprecated in favor of the input element. The file DTD/xhtml1-transitional.dtd is a normative part of this specification. Differences in parsing will produce different visual or aural results, depending on the selectors used. Well, many people also forget to close non-self-closing tags too: Firefox also highlight those errors too and I have seen those a lot. Map sequences of one or more white space characters (including line breaks) to a single inter-word space. <a href="https://www.crosswalk.com/faith/women/what-attributes-define-a-woman-of-god.html">Attributes</a> Provide instructions to help users understand how to complete the form and use individual form controls. lower-case version (i.e. For compatibility with these types of legacy browsers, you may want to avoid using processing instructions and XML declarations. Again, I dont think enforce codestyle is the answers but encourage a more readable code is always a good thing, Most of them I follow yes. The original idea to allow sloppiness to be the language of the Web is not something I support. Enable JavaScript to view data. Every single time. In XML, it is relatively easy to introduce new elements or additional <a href="https://knowledgeburrow.com/is-attribute-minimization-allowed-in-html/">Is attribute minimization allowed in HTML? - KnowledgeBurrow</a> Although XHTML is dead, many of these rules have never been questioned again. Here is the example showing syntax , XHTML does not allow attribute minimization. XHTML became popular when everyone believed XML and XML derivatives were the future. Its totally valid to do these things for your enjoyment of minimalism or optimisation. All the XHTML tags and attributes need to be written in lower case only. I just think the performance argument is misleading. Rediscover HTML, and help shape a new, modern way of writing HTML which acknowledges, but isnt necessarily based on XML. If you use the lang attribute in an element, you must also add the xml:lang attribute, like this: All XHTML documents must have a DOCTYPE declaration. The latest status of this document series is maintained at the All of them. This section describes the status of this document at the time of its publication. </p>
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