Does using an HTML 5 Doctype cause Quirks mode in modern browsers, since HTML5 isn't out yet?
(That is Modern Browsers were out before HMTL5 started spreading, so they don't properly support it.)
If yes, does this mean that the HTML 5 Doctype is tentatively like none at all?
EDIT: If not, what does it do in browsers that don't support and the like?
Quirks mode means your page is running without a document type declared, the document type is defined at the very top of a page and it denotes how the browser should read the HTML.
<! DOCTYPE html> // Tells the browser that we are using HTML5. If document type is not mentioned, browser will go to Quirks mode. Quirks mode depends upon the web browser version, If is older version then this will not support HTML5 tags (Example: header tag, footer tag, section tag,...)
The absence of the DOCTYPE or its incorrect usage will force the browser to switch to quirks mode. It means that the browser will do its best to layout the page that is considered to be old or created against web standards.
No it doesn't, see this article.
What's nice about this new DOCTYPE, especially, is that all current browsers (IE, FF, Opera, Safari) will look at it and switch the content into standards mode - even though they don't implement HTML5. This means that you could start writing your web pages using HTML5 today and have them last for a very, very, long time.
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