JSFiddle - React, Tailwind, and code Playground

by artwl

HTML

<!DOCTYPE html PUBliC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"> 
<html xmlns="http://www.w3.org/1999/xhtml" lang="zh-CN"> 
<head> 
<meta http-equiv="Content-Type" content="text/html; charset=gb2312"/> 
<title>CSS下拉菜单演示</title>
</head> 
<body> 
<ul id="nav">
  <li><a href="#">USER MANAGE</a>
    <ul>
      <li><a href="#">Personal</a></li>
      <li><a href="#">Group</a></li>
      <li><a href="#">Administrator</a></li>
    </ul>
  </li>
  <li><a href="#">MENU TWO</a>
    <ul>
      <li><a href="#">sub menu one</a></li>
      <li><a href="#">sub menu one</a></li>
      <li><a href="#">sub menu one</a></li>
    </ul>
  </li>
  <li><a href="#">MENU THREE</a>
    <ul>
      <li><a href="#">sub menu one</a></li>
      <li><a href="#">sub menu one</a></li>
      <li><a href="#">sub menu one</a></li>
    </ul>
  </li>
 </ul>
</body> 
</html>

CSS

*{margin:0;padding:0;border:0;} 
body { 
font-family: arial, 宋体, serif; 
font-size:12px; 
} 
#nav { 
line-height: 24px; list-style-type: none; background:#666; 
} 
#nav a { 
display: block; width: 120px; text-align:center; 
} 
#nav a:link { 
color:#666; text-decoration:none; 
} 
#nav a:visited { 
color:#666;text-decoration:none; 
} 
#nav a:hover { 
color:#FFF;text-decoration:none;font-weight:bold; 
} 
#nav li { 
float: left; width: 120px; background:#CCC; 
} 
#nav li a:hover{ 
background:#999; 
} 
#nav li ul { 
line-height: 27px; list-style-type: none;text-align:left; 
left: -999em; width: 180px; position: absolute; 
} 
#nav li ul li{ 
float: left; width: 180px; 
background: #F6F6F6; 
} 
#nav li ul a{ wedisplay: block; width: 156px;text-align:left;padding-left:24px; 
} 
#nav li ul a:link { 
color:#666; text-decoration:none; 
} 
#nav li ul a:visited { 
color:#666;text-decoration:none; 
} 
#nav li ul a:hover { 
color:#F3F3F3;text-decoration:none;font-weight:normal; 
background:#C00; 
} 
#nav li:hover ul { 
left: auto; 
} 
#nav li.sfhover ul { 
left: auto; 
} 
#content { 
clear: left; 
}

JavaScript

function menuFix() { 
var sfEls = document.getElementById("nav").getElementsByTagName("li"); 
for (var i=0; i<sfEls.length; i++) { 
sfEls[i].onmouseover=function() { 
this.className+=(this.className.length>0?"": "") +"sfhover"; 
} 
sfEls[i].onMouseDown=function() { 
this.className+=(this.className.length>0?"": "") +"sfhover"; 
} 
sfEls[i].onMouseUp=function() { 
this.className+=(this.className.length>0?"": "") +"sfhover"; 
} 
sfEls[i].onmouseout=function() { 
this.className=this.className.replace(new RegExp("( ?|^)sfhover\\b"), 
""); 
} 
} 
} 
window.onload=menuFix;