what is attribute minimization in html

what is attribute minimization in html

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Examples might be simplified to improve reading and learning. Yet its the essence of what we would have wanted to keep if XML and XHTML hadnt come around. See Section 3.1.2 for information on using XHTML with other namespaces, for instance, to include metadata expressed in RDF within XHTML Visit Mozilla Corporations not-for-profit parent, the Mozilla Foundation.Portions of this content are 19982023 by individual mozilla.org contributors. Script and style elements need CDATA sections. the document. Deprecate the language attribute of the script tag. corresponding items attribute requirements or the location allowing mixing of attributes. SGML and XML both permit references to characters by using hexadecimal values. The value of the xml:lang attribute takes precedence. Minimalism isnt always the best idea. Rephrasing and reordering, this is the essence: How does this look like in practice? In SGML and XML, these are They let us lean on other peoples expertise like yours! map. is found in the normative Element Prohibitions. WebHTML 4 also introduced the idattribute. Lets have a look. The title attribute (and all other attributes) can be written with uppercase or lowercase like title or TITLE. Same as js slowly is overtaken by typescript, I sincerely hope that w3c will apply similar code quality mechanics to HTML. 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. In the second case, image is, technically, a part of paragraph. For compatibility with these types of legacy browsers, you may want to avoid using processing instructions and XML declarations. Saving a few bytes by omitting 12 characters isnt useful if it causes confusion in understanding what your HTML is actually supposed to render. Finally, HTMLHTML not XHTMLHTML also allows to minimize attributes. 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 small set of guidelines. Even though these prohibitions cannot be defined in the DTD, certain elements should not be nested. Enable JavaScript to view data. Its possible to set up a minifier during build, so that you can keep your XHTML-HTML in the repo, and ship only clean HTML-HTML thats what I did and am happy ;). 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. Note that the collection of legal values in XML 1.0 Section 2.3, production 5 is much larger than that permitted to be used in the ID and NAME types defined in HTML 4. Each and every XHTML tag should have an equivalent closing tag, even empty elements should also have closing tags. The following elements are not allowed to have any other element inside them. BCD tables only load in the browser with JavaScript enabled. Due to the fact that XHTML is an XML application, certain practices that were perfectly legal in SGML-based HTML4 [HTML4] must be 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). xhtml is the base for xml datas integration at first, its a layout for xml supports at birth, and all xml derivatives. Thats how I feel about it, anyway. 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. Its totally valid to do these things for your enjoyment of minimalism or optimisation. Perhaps some of them make your code more readable too. The following characters are defined in [XML] white space characters: The XML processor normalizes different systems' line end codes into one single LINE FEED character, that is passed up to the application. Such a declaration is required when 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: The public identifier included in the DOCTYPE declaration must reference one of the three DTDs found in DTDs using the respective Formal Public Identifier. Other documents may supersede this document. the namespace "xmlns=http://www.w3.org/1999/xhtml" is default, and will be added There were reasons everyone preferred XHTML back in the early 00s. it I think XHTML was too strict and put a high cost for a low gain, but it had point. Sorry for the question but I'm not familliar with XHTML. Here is an example showing valid and invalid ways of using tags . It is valid for the input types including: date, month, week, time, datetime-local, number and range types, and the element. I dont think I will ever be comfortable not using closing tags in my lists! Script and style The file DTD/xhtml1-transitional.dtd is a normative part of this specification. This attribute is constrained such that it can only have the same values as type ID, or as the Name production in XML 1.0 Section 2.3, Im old enough to learn HTML the HTML way, switched to XHTML way because I liked it better, but Im open to be persuaded. Every time you have special rules, you have to explain those to new team members, and they will get them wrong. In both cases, if omitted, the value defaults to 1. The namespace for XHTML is documents as defined above. 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. There are some things with the XHTML approach that are bad; e.g. Good article. One thing I learned in 30 years of coding: Code should always be as uniform as possible. XHTML was developed to make HTML more extensible and flexible to work with As the XHTML family evolves, documents conforming to XHTML 1.0 will be more likely to interoperate within and among various XHTML environments. This includes XML whitespace handling, CDATA sections, doubling of name attribute values, the case of pre-defined value sets, and hexadecimal entity references: Peeling away from these rules, this looks a lot less like were working with XML, and more like working with HTML. corresponding items attribute requirements or the location allowing mixing of attributes. Finally, note that XHTML 1.0 has deprecated the name attribute of the a, applet, form, frame, iframe, followed, operates in HTML4 conforming user agents. Some have even been elevated to best practices for HTML. For example, dropping attribute quotes to save a few bytes will cause more issues than simply continuing to follow the XHTML spec, especially given attributes are often dynamically injected these days. XML 1.0 application, and three DTDs corresponding to the ones defined by HTML4. That's why the correct answer of this question is option D. Within the XHTML namespace, user agents are expected to recognize the "class" attribute. The file DTD/xhtml1-frameset.dtd is a normative part of this specification. The low attribute value must be greater than the min The attribute minimization is described as an in the way of checked. 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. Please dont encourage people do write bad code, just because it is possible. Web. When you validated this page , the validator would reject the page as not well formed XHTML . In addition, browsers ignore errors in HTML But the reality is they just dont matter. Yes. Is Mandatory An XHTML document must have an XHTML declaration. alternative syntax

allowed by XML gives uncertain results in many existing user agents. 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. HTML contributes very little to overall page sizes and this modern way of writing makes pages harder to process. In a remarkably short space of time, HTML became wildly popular and rapidly outgrew its original purpose. remaining confident in their content's backward and future compatibility. The following attributes are involved: compact, nowrap, ismap, declare, noshade, checked, I love semantic HTML. User agents that access XHTML documents served as Internet media type, User agents that access XHTML documents served as Internet media types. Guidelines for creating compatible documents can be found on the Working Group's patent disclosure page. The XHTML way is well-documented, because XHTML 1.0 describes in great detail in its section on Differences with HTML 4: Does this look familiar? Tools dont just automate repetitive tasks, they also free us from the drudgery of learning irrelevant arcana. Next within the remaining possibilities, collecting personal data should be minimized. In SGML-based HTML 4 certain elements were permitted to omit the end tag; with the elements that followed implying closure. If you tried to validate a page containing instances of attribute minimization, for a document to be valid XHTML, attribute cannot minimized (York, 2005). See Client-side validation and rangeUnderflow for more information. explicitly address the issue of whitespace handling in non-Latin character sets. Save my name, email, and website in this browser for the next time I comment. Fewer decisions to make. White space handling in attribute values is done according to XML. I also wonder how many hours are spent globally in HTML design discussions over each element/attribute, which could be spared by saying lets just follow the generic rule allowing time to be invested in more productive discussions about creating new functionality / adding value. WebThe lang attribute applies to almost every XHTML element. A. source B. src C. xmlns D. link Answer & Solution Discuss in Board Save for Later 18. Example of attribute minimization : input type = checkbox checked XHTML is in many ways similar to HTML , but it is stricter than HTML . How to attribute Minimization ? And for that matter, XML is essentially a stricter subset of SGML. This is an XHTML document with a minimum of required tags: Note: The DOCTYPE declaration is not a part of the XHTML document itself. Attributes with pre-defined value sets are not case-sensitive. The annotated contents of this file are available in this separate section for completeness. agents have silently ignored incorrect usage of the ampersand character in HTML documents - treating ampersands that do not look like entity references as literal ampersands. But optional closing tags and for me are like semicolon in JavaScript. We shouldnt forget those. http-equiv="Content-type" content="text/html; charset=EUC-JP"/>). Wrong. HTML 4 defined the name attribute for the elements a, applet, form, frame, iframe, img, and Custom minimizers. The file DTD/xhtml-special.ent is a normative part of this specification. Readability counts (a lot) in any language syntax. 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. may also be labeled with the Internet Media Type "application/xhtml+xml" as defined in [RFC3236]. It is a reformulation of the three HTML4 document types as applications of XML 1.0 [XML]. WebAttribute names are always case-insensitive. XML was conceived as a means of regaining the power and flexibility of SGML without most of its complexity. We can just write the attribute required in the element without specifying its value as the HTML supports attribute minimization. Affordable solution to train a team and make them project ready. You can play with html/xhtml by deleting tags at their middle and see the display and render working as fine as possible too. Here is an example of using DOCTYPE . I would argue that the code-coloring features implemented in virtually every modern editor render that argument moot, making all-caps really a matter of personal preference. Historically, the character encoding of an HTML document is either specified by a web server via the charset parameter of the HTTP Content-Type header, or via a meta element in the Again, theres nothing wrong with caring about this because you find it interesting. And then that confusion makes it easier for devs to be too okay with DIV soup. HTML permits attribute minimization, where boolean attributes can have their value omitted entirely, e.g., . In XML, URI-references [RFC2396] that end with fragment identifiers of the form Indicate any required and optional input, data formats, and other relevant information. One way of walking us back is to negate the rules imposed by XHTML. Don't include more than one isindex element in the document head. 2.3.5 Attribute Minimization. wants to set its character encoding explicitly must include both the XML declaration an encoding declaration and a meta http-equiv statement (e.g., could be closed! For the element, the min attribute defines the lower numeric bound of the measured range. (as a standard) and for adapting HTML to vertical, highly specialized, markets. The latest status of this document series is maintained at the These modules will permit the combination of existing and new feature sets when developing content and when designing new user agents. The annotated contents of this file are available in this separate section for completeness. See Section 6.2 of [HTML4] for more information. There are no substantive changes in this document - only the integration of various errata. Therefore, style sheets should be able to continue using the shorthand "." DOCTYPE in the next chapter. A directory of Objective Type Questions covering all :-), One note of English syntax, Documents may not be well-formed, is an ambiguous construction. Personally, the less you write the better! Golden States Kevon Looney does Joga.

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here is another paragraph. The root element of the document must contain an xmlns declaration for the XHTML namespace [XMLNS]. Enjoy riding your hobby horse, but preferably dont present it as practical transport for those who just want to get to work. Im more than happy spending those extra bytes for readability (and therefore maintainability) of a projects code. single tags then required / : like a closure. W3C liability, trademark, document use and software licensing rules apply. the semi-colon) that make up the entity reference. The annotated contents of this file are available in this separate section for completeness. Where possible, the inherited value is saved rather than the value explicitly set at the level. XHTML syntax is very similar to HTML syntax and almost all the valid HTML elements are valid in XHTML as well. XML-based user agents The value of min and step define what are valid values, even if the step attribute is not included, as step defaults to 0. contains all the descendant elements. The min attribute defines the minimum value that is acceptable and valid for the input containing the attribute. In XML, it is relatively easy to introduce new elements or additional True B. For example, when the href attribute of the a element refers to a CGI script that takes parameters, it must be expressed as [ because of rules I cant demonstrate crossing tags by html and by xhtml with the bold tag ]. See also translations. If you want to report an error, or if you want to make a suggestion, do not hesitate to send us an e-mail: , , W3Schools is optimized for learning and training. But were not done yet. You may not use XHTML (anymore), but when you write HTML, you may be more influenced by XHTML than you think. Finally, the time how long collected personal data is stored should be minimized. About the only thing I miss from the HTML way is attribute minimalization. When you start saying actually HR doesnt need a (self-)closing tag then you start having to remember a list of the rules do apply to these things, but not to these things, unless youre in this context in which case you may also need to do this; i.e. what is attribute minimization in html. WebThe attributes individually are not necessarily required, but in total at least one attribute must be provided to indicate. XHTML is not not the HTML way, its just not the SGML way. If a user agent encounters an attribute value it does not recognize, it must use the default attribute value. All of them. selector syntax even if the user agent does not read the DTD. However, The root element of the document must be html. Make sure to quite all attribute values. XML does not support attribute minimization. If this is not possible, a document that document itself. Thats the simple story. Well-formedness is a new concept introduced by [XML]. Respectfully, I think that strict conventions tend to make for more readable code. use WebAn important attribute in tag is xmlns to make the document validated The outmost HTML elements in a document are must which includes , ,