我想查看其他人如何对他们的网站进行编码,但却试图理解这样做:
<html class="js flexbox flexboxlegacy canvas canvastext webgl no-touch geolocation postmessage no-websqldatabase indexeddb hashchange
history draganddrop websockets rgba hsla multiplebgs backgroundsize borderimage borderradius boxshadow textshadow opacity
cssanimations csscolumns cssgradients no-cssreflections csstransforms csstransforms3d csstransitions fontface generatedcontent
video audio localstorage sessionstorage webworkers applicationcache svg inlinesvg smil svgclippaths"
lang="en" style="">
这是什么目的,有人可以向我解释一下吗？