javascript - 纯CSS下拉菜单点击隐藏还是显示div？

Question

我做了以下内容。我想点击列表项来切换下一个 div。

JSFiddle Demo

当点击list item时，

<li><a href="#">Create/Read/Manipulate</a></li>

下一个 div.submenu 显示，再次点击隐藏以反射(reflect) jQuery 中类似切换的效果。

<div class="submenu"> 
    <a href="#">DOM</a><br /> 
    <a href="#">Reader/Writer</a><br /> 
    <a href="#">SimpleXML</a><br /> 
</div>

我不想使用 jQuery。欢迎使用纯 CSS 或 JavaScript。

#leftcolumn {
    width: 18%;
    margin: 3px;
    padding: 0;
    display: inline;
}
#leftcolumn ul.leftmenu {
    list-style: none;
    text-align: left;
    margin: 0 5px 3px 10px;
    padding: 0px;
}
#leftcolumn ul.leftmenu li {
    border-bottom: 1px solid #EFF0F1;
    font-size:14px;
    padding: 1px 0px;
}
#leftcolumn ul.leftmenu li a {
    line-height: 20px;
    color: #333;
    text-decoration: none;
}
#leftcolumn ul.leftmenu li a:hover {
    color: #FA7837;
}
#leftcolumn ul.leftmenu li#activemenu a {
    color: #FA7837;
}
#leftcolumn ul.leftmenu .submenu {
    margin: 3px 0 3px 7px;
}
#leftcolumn ul.leftmenu .submenu a {
    color: #333;
    font-weight: normal;
    font-size:14px;
    text-decoration: none;
    line-height: 1.3em;
}
#leftcolumn ul.leftmenu .submenu a:hover {
    color: #F9864D;
    text-decoration:underline;
}
#leftcolumn ul.leftmenu .submenu a#activesubmenu {
    color: #F9864D;
}

<table id="maintable" cellspacing="0" cellpadding="0">
  <tr>
    <td id="leftcolumn" >
      <ul class="leftmenu">			
        <li><a href="#">CDATA</a></li>	
        <li><a href="#">Create/Read/Manipulate</a></li>
        <div class="submenu"> 
          <a href="#">DOM</a><br /> 
          <a href="#">Reader/Writer</a><br /> 
          <a href="#">SimpleXML</a><br /> 
        </div>
        <li><a href="#">Entity Declaration</a></li>	
        <li><a href="#">Create/Read/Manipulate</a></li>
        <div class="submenu"> 
          <a href="#">DOM</a><br /> 
          <a href="#">Reader/Writer</a><br /> 
          <a href="#">SimpleXML</a><br /> 
        </div>
      </ul>
    </td>
  </tr>
</table>

Answer 1

您可以使用悬停。

#leftcolumn {
  width: 18%;
  margin: 3px;
  padding: 0;
  display: inline;
}
#leftcolumn ul.leftmenu {
  list-style: none;
  text-align: left;
  margin: 0 5px 3px 10px;
  padding: 0px;
}
#leftcolumn ul.leftmenu li {
  border-bottom: 1px solid #EFF0F1;
  font-size:14px;
  padding: 1px 0px;
}
#leftcolumn ul.leftmenu li a {
  line-height: 20px;
  color: #333;
  text-decoration: none;
}
#leftcolumn ul.leftmenu li a:hover {
  color: #FA7837;
}
#leftcolumn ul.leftmenu li#activemenu a {
  color: #FA7837;
}
#leftcolumn ul.leftmenu #submenu {
  margin: 3px 0 3px 7px;
}
#leftcolumn ul.leftmenu #submenu a {
  color: #333;
  font-weight: normal;
  font-size:14px;
  text-decoration: none;
  line-height: 1.3em;
}
#leftcolumn ul.leftmenu #submenu a:hover {
  color: #F9864D;
  text-decoration:underline;
}
#leftcolumn ul.leftmenu #submenu {
  display: none;
}
#leftcolumn ul.leftmenu li:hover #submenu {
  display: block;
}
#leftcolumn ul.leftmenu #submenu a#activesubmenu {
  color: #F9864D;
}

<table id="maintable" cellspacing="0" cellpadding="0">
  <tr>
    <td id="leftcolumn" >
      <ul class="leftmenu">		
        <li><a href="#">Syntax/Rules</a></li>				
        <li><a href="#">Data</a></li>	
        <li><a href="#">CDATA</a></li>	
        <li><a href="#">Create/Read/Manipulate</a>
          <div id="submenu"> 
            <a href="#">DOM</a><br /> 
            <a href="#">Reader/Writer</a><br /> 
            <a href="#">SimpleXML</a><br /> 
          </div></li>
        <li><a href="#">Entity Declaration</a></li>	
        <li><a href="#">How To Write</a></li>
      </ul>
    </td>
  </tr>
</table>