What is the DOCTYPE for html4?

HTML 4 Strict is a trimmed down version of HTML 4 that emphasizes structure over presentation. Deprecated elements and attributes (including most presentational attributes), frames, and link targets are not allowed in HTML 4 Strict.

What is loose DTD?

— This is the HTML 4.01 Transitional DTD, which includes presentation attributes and elements that W3C expects to phase out as support for style sheets matures. The URI used as a system identifier with the public identifier allows the user agent to download the DTD and entity sets as needed.

What is strict DTD in HTML?

— This is HTML 4.01 Strict DTD, which excludes the presentation attributes and elements that W3C expects to phase out as support for style sheets matures. Authors should use the Strict DTD when possible, but may use the Transitional DTD when support for presentation attribute and elements is required.

What is the difference between HTML and XML?

The key difference between HTML and XML is that HTML displays data and describes the structure of a webpage, whereas XML stores and transfers data. XML is a standard language which can define other computer languages, but HTML is a predefined language with its own implications.

What is w3 Org 1999 xhtml?

The namespace name http://www.w3.org/1999/xhtml is intended for use in various specifications such as: HTML 5: A vocabulary and associated APIs for HTML and XHTML. XHTML ™ 1.0: The Extensible HyperText Markup Language. XHTML Modularization.

Why is doctype used?

The doctype is used for two things, by different kinds of software: Web browsers use it to determine which rendering mode they should use (more on rendering modes later). Markup validators look at the doctype to determine which rules they should check the document against (more on that later as well).

What is true about HTML4 and HTML5?

HTML4 is an established standard for developing browser applications and has been in use for more than 10 years. For this reason, HTML4 is compatible with almost all web-browsers. In HTML5, this tag has been removed. A new tag has been introduced.

What is the doctype declaration in HTML 4.01?

The declaration is not an HTML tag; it is an instruction to the web browser about what version of HTML the page is written in. In HTML 4.01, the declaration refers to a DTD, because HTML 4.01 was based on SGML.

Where do I find the DOCTYPE in HTML?

The doctype appears just above the tag, at the very start of each document you write: The doctype explains what type of HTML is to be expected and therefore what spec validators (for example the W3C HTML validator) should validate your document against.

Is the HTML 4.01 Transitional DOCTYPE valid?

The HTML 4.01 transitional doctype validates against the HTML 4.01 spec. It allows some presentational markup and deprecated elements (such as elements) but not framesets. Again, it validates loose HTML style markup.

What’s the difference between doctype and DTD in HTML?

The declaration is not an HTML tag; it is an instruction to the web browser about what version of HTML the page is written in. In HTML 4.01, the declaration refers to a DTD, because HTML 4.01 was based on SGML. The DTD specifies the rules for the markup language, so that the browsers render the content correctly.