What is the mean of DOCTYPE in a html page?

Dung Do Tien May 29 2020 518

I am studying English, I don't know what is mean of DOCTYPE in an Html page?

<!DOCTYPE html>

I have tried to remove it from my HTML page but it still displays fine. Nothing happens.  

Thank you for any explains.

Have 1 answer(s) found.
  • M

    Marry Christ May 30 2020

    DOCTYPE is used to inform the browser about the version of HTML used on a web page. It is not a tag and no display anything in the browser. 

    The latest version of Html is 5.0 (HTML5) so syntax looks like :

    <!DOCTYPE html>

    If you want using HTML version 4 you can declare as below: 

     <!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">

    Note: Why this is important? Because maybe as you know html5 support more many new tags If you declare version 4 and using some tag of version 5 some browser will not understand to display. So I recommend use the latest version of Html.

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