where to find info about doc type html class

**peterb** · Feb 13, 2012 07:32

I have just seen this coding for html and was wondering where, why, how and if I should make use of it.

Code:

<html xmlns="http://www.w3.org/1999/xhtml" lang="en" class=" js flexbox canvas canvastext webgl no-touch geolocation svg">

Does anyone know where the class is explained?

**xhtmlcoder** · Feb 13, 2012 07:45

There is nothing special about those class names apart from I believe that Modernizr JavaScript library uses that so unless you are using something strange like Modernizr they are just generic classes.

**peterb** · Feb 13, 2012 08:10

Hello xhtmlcoder,

Yes, but that doesn't explain to mean when to use the class ='s ??? Also, why include the libraries in that area when they are normally placed under a javascript link?

**ralph.m** · Feb 13, 2012 08:23

You normally see this when someone is using HTML5 and thus employing shivs/polyfills to make up for the lack of browser support. It's a bit of a mess, really, but all the rage. JavaScript checks what the browser does and doesn't support and packs a whole bunch of classes into the HTML to effect certain functionality.

Though this premature use of HTML5 is all the rage, a lot of people around here steer clear of it, as it's an unnecessary mess—especially if there's nothing in HTML5 that you actually need to use.

**peterb** · Feb 13, 2012 08:26

I had a hunch that it had something to do with html5 but wasn't sure. Good to know, thanks.

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