Doctype html w3schools

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The doctype declaration is not an HTML tag; it is an instruction to the web browser about what version of the markup language the page is written in. The DTD specifies the rules for the markup language, so that the browsers can render the content correctly. Framesets are not allowed. The markup must also be written as well-formed XML. Ektron CMS

Doctype html w3schools

The list is informative and does not try to be exhaustive there are many other proper declarations you could use , but it has most of the declarations commonly used on the Web at the moment. This makes sure the document will be parsed the same way by different browsers. The simplest and most reliable doctype declaration to use is the one defined in HTML5 :. If you need a doctype matching a specific version of X HTML, the doctype declaration must be exact both in spelling and in case to have the desired effect, which makes it sometimes difficult. To ease the work, below is a list of recommended doctype declarations that you can use in your Web documents. Use the following markup as a template to create a new HTML document using a proper Doctype declaration. See the list below if you wish to use another DTD. This means that in many XML languages, doctype declarations are not necessarily useful. The list below is provided only if you actually need to declare a doctype for these types of documents. The doctype declarations below are valid, but have mostly an historical value — a doctype declaration of a more recent equivalent ought to be used in their stead. W3C liability , trademark , document use and software licensing rules apply. Your interactions with this site are in accordance with our public and Member privacy statements. Recommended list of Doctype declarations. Warning The list is informative and does not try to be exhaustive there are many other proper declarations you could use , but it has most of the declarations commonly used on the Web at the moment.

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The doctype also serves to make the browser render the page in so called "standards mode". In standards mode, browsers generally try to render the page according to the CSS specifications — they trust that the person who created the document knew what they were doing. As a web designer or developer, you will get the most consistent results by making sure that all browsers use their Standards rendering mode, hence you should stick to web standards, and use a proper doctype! There is no disadvantage to using this doctype, and it is certainly a lot easier to remember than the others! There are however, other doctypes that you may come across when working on various projects. Let's look at some of the others you might bump into. The HTML 4. Again, it validates loose HTML style markup. If you want to use framesets and still have your markup validate, you can use one of these two doctypes:.

Doctype html w3schools

While the head of the document isn't visible to the sighted visitor, it is vital to make your site function. It contains all the meta information, including information for search engines and social media results, icons for the browser tab and mobile home screen shortcut, and the behavior and presentation of your content. In this section, you'll discover the components that, while not visible, are present on almost every web page. To create the MachineLearningWorkshop. There are several features that should be considered essential for any and every web page. Browsers will still render content if these elements are missing, but include them. The first thing in any HTML document is the preamble.

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W3Schools is optimized for learning and training. Backend Python Certificate Course. Free Tutorials Enjoy our free tutorials like millions of other internet users since Browser Statistics Read long term trends of browser usage. Your site needs to be ready and able to connect to outside services. Set Goal Get personalized learning journey based on your current skills and goals. Follow our guided path. References Explore our selection of references covering all popular coding languages. Framesets are not allowed. My Learning Track your learning progress at W3Schools and collect rewards.

This ensures that the web page is parsed the same way by different web browsers. In HTML 4. Because HTML 4.

The declaration is not an HTML tag. Links Link Colors Link Bookmarks. CSS framework. Code Editor Try it With our online code editor, you can edit code and view the result in your browser. Climb to the top of search rankings. What is a Quiz? Web Hosting. Help the lynx collect pine cones. Quizzes Test yourself with multiple choice questions. XML Certification. It is an "information" to the browser about what document type to expect. All Our Services. The simplest and most reliable doctype declaration to use is the one defined in HTML5 :.