HTML <!DOCTYPE> Declaration - W3Schools
All HTML documents must start with a <!DOCTYPE> declaration. The declaration is not an HTML tag. It is an "information" to the browser about what document type to expect.
Doctype - MDN Web Docs Glossary: Definitions of Web-related …
2024年9月2日 · The doctype is case-insensitive. The convention of MDN code examples is to use lowercase, but it's also common to write it as <!DOCTYPE html>.
Document type declaration - Wikipedia
A document type declaration, or DOCTYPE, is an instruction that associates a particular XML or SGML document (for example, a web page) with a document type definition (DTD) (for example, the formal definition of a particular version of HTML 2.0 - 4.0). [1]
HTML <!DOCTYPE> Declaration - W3docs
The <!DOCTYPE> declaration specifies the HTML version used in the document. Learn how to use <!DOCTYPE> Declaration with with syntax and examples.
What is the DOCTYPE Declaration in HTML? - freeCodeCamp.org
2019年12月29日 · The HTML document type declaration, also known as DOCTYPE, is the first line of code required in every HTML or XHTML document. The DOCTYPE declaration is an instruction to the web browser about what version of HTML the page is written in.
html - What is DOCTYPE? - Stack Overflow
In HTML (including XHTML) as used on web pages, DOCTYPE is a string that triggers one of a few browser modes (quirks mode, standards mode, almost standards mode), depending on the exact spelling of the DOCTYPE.
Recommended list of Doctype declarations - World Wide Web …
2016年7月1日 · When authoring document is HTML or XHTML, it is important to Add a Doctype declaration. 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:
HTML DOCTYPE Declaration - GeeksforGeeks
2024年11月27日 · HTML DOCTYPE (Document Type Declaration) is an instruction that appears at the beginning of an HTML document, before the <html> tag. Its primary role is to tell the web browser which version of HTML the page is written in, ensuring that the browser renders the content correctly.
What is the meaning of DOCTYPE in HTML - GeeksforGeeks
2023年5月31日 · The HTML document type declaration or Doctype is an instruction used by web browsers to fetch what version of HTML the website is written in. It helps browsers in understanding how the document should be interpreted thus eases the rendering process.
Choosing the right doctype for your HTML documents
2014年3月10日 · In this Web Standards Curriculum article I will look at the doctype in a lot more detail, showing what it does and how it helps you validate your HTML, how to choose a doctype for your document, and the XML declaration, which you’ll …
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