An identifier in the HTML document, that tells to the browser which type of HTML it needs to use to show contents of that document. Specifying different versions of HTML will result in different behavior of the document. If the type hasn't been specified at the beginning of HTML document the browser might load it slowly or even with the errors.
Usage:
<!DOCTYPE HTML /*Here goes type of the document specification (DTD)*/>
An HTML DOCTYPE defines which version of the language you are using, and let's the browser act accordingly. The DOCTYPE in an HTML document is an idea borrowed from XML. The DOCTYPE file defines the rules that the language has to follow. By making sure you've declared the doctype in an HTML document, you let the browser know how you're expecting that HTML to be treated. In an ideal environment, adding a doctype will allow you to be sure of exactly how the code will be rendered by the user's browser.
A doctype is a header, so it should be placed at the top of the webpage. When writing HTML for a website, it should be placed directly above the tag.
This is not a question, it is a statement with a question mark on the end.
doctype, html,head, body, and title
<tag>...</tag> For tags that open and close. Or <selfclosingtag> for tags that don't. Or <selfclosingtag /> if you're using XHTML **Note: neither of those are real HTML tags. For the first the paragraph tag <p>The content of the paragraph.</p> is a good example. For the second, <img src="image.jpg" alt="Image"> or <img src="image.jpg" alt="Image" />
The term DOCTYPE tells the browser which type of HTML is used on a webpage. In turn, the browsers use DOCTYPE to determine how to render a page. Failing to use DOCTYPE or using the wrong DOCTYPE may load your page in Quirks Mode. AchieversIT Training Institute.
An HTML DOCTYPE defines which version of the language you are using, and let's the browser act accordingly. The DOCTYPE in an HTML document is an idea borrowed from XML. The DOCTYPE file defines the rules that the language has to follow. By making sure you've declared the doctype in an HTML document, you let the browser know how you're expecting that HTML to be treated. In an ideal environment, adding a doctype will allow you to be sure of exactly how the code will be rendered by the user's browser.
The default DocType in Adobe Dreamweaver is HTML5, represented as <!DOCTYPE html>. This declaration tells the web browser to render the document in standards mode, ensuring compatibility with modern web technologies. Dreamweaver allows users to create and edit documents with this DocType automatically when starting a new HTML file. Users can also choose other DocTypes if needed for specific projects.
A doctype is a header, so it should be placed at the top of the webpage. When writing HTML for a website, it should be placed directly above the tag.
a <!DOCTYPE>declaration
You will generally want to end any tag that does not have a closing tag with "/" at the end before closing it. The DTD Doctype declaration is the exception since the HTML tag is not opened until after it.
This is not a question, it is a statement with a question mark on the end.
doctype, html,head, body, and title
That's the DocType for HTML 4.01. It is normally used at the very beginning of an HTML 4.01 document to tell the browser what version of HTML it should use to render the page.
<tag>...</tag> For tags that open and close. Or <selfclosingtag> for tags that don't. Or <selfclosingtag /> if you're using XHTML **Note: neither of those are real HTML tags. For the first the paragraph tag <p>The content of the paragraph.</p> is a good example. For the second, <img src="image.jpg" alt="Image"> or <img src="image.jpg" alt="Image" />
The !DOCTYPE tag tells the browser what markup to expect in the rest of the document.
There is not much in migrating from HTML to HTML5. You have to include the DOCTYPE in the html tag.