Why jQuery's own websites not using feature detection or modernizr library for the same.
Why jQuery's own websites not using feature detection or modernizr library for the same. They are using multiple html tags in conditional comments. Like :
<!--[if IE 7 ]>
<html class="no-js ie ie7 lte7 lte8 lte9" lang="en-US"> <![endif]-->
<!--[if IE 8 ]>
<html class="no-js ie ie8 lte8 lte9" lang="en-US"> <![endif]-->
<!--[if IE 9 ]>
<html class="no-js ie ie9 lte9>" lang="en-US"> <![endif]-->
<!--[if (gt IE 9)|!(IE)]><!--> <html class="no-js" lang="en-US"> <!--<![endif]-->