What Is Doctype In HTML5? Which Doctype Is Correct For HTML5
What Is Doctype In HTML5
The HTML document type declaration, also known as DOCTYPE, is the first line of code required in every HTML or XHTML document. The declaration is an instruction to the web browser about what version of HTML the page is written in. This ensures that the web page is parsed the same way by different web browsers.
Declaration of a Doctype
A DOCTYPE declaration appears at the top of a web page before all other elements. According to the HTML specification or standards, every HTML document requires a document type declaration to ensure that the pages are displayed in the way they are intended to be displayed.
<!DOCTYPE html> Doctype syntax for strict HTML 4.01: <!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01//EN" "http://www.w3.org/TR/html4/strict.dtd"> Doctype syntax for transitional HTML 4.01: <!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd"> Doctype syntax for frameset HTML 4.01: <!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Frameset//EN" "http://www.w3.org/TR/html4/frameset.dtd">
- best free android backup software for pc
- hair color change app
- trustworthy rom sites
- free animations download for websites
- could not find module “@angular-devkit/build-angular”
- npm: command not found
- prevnext
- sites like codepen
Why we use doctype in HTML?
The Doctype does two things.
- It identifies which dialect of HTML you’re using.
- It controls whether the browsers use “standards” or “quirks” mode to render the document.
If there is no doctype, or there’s an unrecognized one, then it uses “quirks” mode and interprets the document as best it can. If there IS a doctype, and it recognizes it, then it follows the standards. The results of the rendering can vary depending on how it interprets the document.
DOCTYPE Results
First, let’s take a look at a table containing the raw data that was produced.
| From Name | DOCTYPE |
|---|---|
| Amazon Echo | HTML 5 |
| Amazon Web Services | XHTML 1.0 Transitional |
| Boost Mobile | HTML 4.0 Transitional |
| Credit Karma | HTML 5 |
| Dropbox | HTML 4.0 Transitional |
| HTML 4.01 Transitional | |
| Google Analytics | XHTML 1.0 Strict |
| Google Cloud Platform | HTML 5 |
| Google Local Guides | HTML 5 |
| Heroku | XHTML 1.0 Transitional |
| HTML 4.0 Transitional | |
| Jimmy John’s | XHTML 1.0 Strict |
| Litmus | HTML 5 |
| Microsoft Azure | XHTML 1.0 Strict |
| Netflix | XHTML 1.0 Transitional |
| Newegg.com | HTML 4.01 Transitional |
| PayPal | XHTML 1.0 Transitional |
| Pizza Hut | XHTML 1.0 Transitional |
| Target | HTML 5 |
| The Washington Post | XHTML 1.0 Transitional |
| Twilio SendGrid | HTML 4.01 Transitional |
| XHTML 1.0 Transitional | |
| Vanguard | HTML 5 |
| Wayfair | XHTML 1.0 Transitional |
| Yahoo Small Business | HTML 5 |