Use HTML CSS JS to create a simple web menu interface_Basic knowledge

<span class="tags">
  <span>经济、金融类</span>
  <span>行政、人资类</span>
  <span class="active">市场、销售类</span>
  <span>电子工程IT类</span>
  <span class="active">工程类</span>
  <span>生物医药类</span>
  <span>物理、化学类</span>
  <span>广告、传媒类</span>
  <span>语言、翻译类</span>
</span>

/* 标签样式 */
.tags span {
  font: 12px/22px 'Microsoft Yahei',Arial,Lucida Grande,Tahoma;
  border: 1px #E3E0D9 solid;
  display: inline-block;
  height: 20px;
  background: #FFF;
  text-align: center;
  padding: 2px 7px;
  margin: 1px 4px;
  cursor: pointer;
  -webkit-transition: all .3s ease-in-out;
  -moz-transition: all .3s ease-in-out;
  overflow: hidden;
  color: #989898;
}
.tags span:hover {
  border-color: #00956d;
}
.tags span.active {
  color: #FFF;
  border-color: #00956d;
  background-color: #00956d;
}

// 绑定标签点击事件 @ 2014-01-29 21:57:26
$('.tags span').on('click', function(){
  $(this).toggleClass('active');
});
 
// 读取标签数据时 @ 2014-01-29 23:12:35
var tag_content = ',';
$('.tags span').each(function(k, v) {
  if($(v).hasClass('active')){
    tag_content += $(v).text()+',';
  }
});
if( tag_content==',' ){
  alert('请至少选择一个专业标签');
  return;
}