js,下拉框效果图： 
代码如下： <!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN"><html ><head> <meta http-equiv="Content-Type" content="text/html; charset=utf-8" /> <title></title> <style type="text/css"> *{padding: 0;margin:0;} ul,li{list-style: none} .left{float: left;} .right{float: right;} .select_contain{font-size: 14px;color: #333;line-height: 38px;margin: 30px 0;} .select_item{margin-right: 50px;position: relative;} .select_tit{margin-right: 20px;} .select_result{width: 100px;line-height: 38px;border:1px solid #ccc;text-align: center;border-radius: 4px;text-indent: -8px;cursor:pointer;} .select_result .triangle{border:5px solid transparent;border-top:5px solid #666;position: absolute;top: 16px; right:8px;} .select_item ul{display:none;position:absolute;top:100%;right:0;width:100px;background: #f3f3f3;border:1px solid #ccc;border-radius:0 0 4px 4px; border-top-color:#f3f3f3;margin-top:-4px;} .select_item ul li{text-align: center;cursor: pointer;} .select_item ul li:hover{background: #f4a100; color: #fff;} </style> <script src="http://cdn.bootcss.com/jquery/3.2.1/jquery.js"></script> <script> function select(){ $(document).click(function(){ $(".select_module_con ul").slideUp(); }) var module=$(".select_result"); module.click(function(e){ e.stopPropagation(); var ul=$(this).next(); ul.stop().slideToggle(); ul.children().click(function(e){ e.stopPropagation(); $(this).parent().prev().children("span").text($(this).text()); ul.stop().slideUp(); }) }) } $(function(){ select(); }) </script></head><body> <div class="select_contain"> <div class="select_item clearfix left"> <div class="select_tit left">选择节目:</div> <div class="select_module_con left"> <div class="select_result"> <span>选择节目</span> <div class="triangle"></div> </div> <ul> <li>节目1</li> <li>节目2</li> <li>节目3</li> </ul> </div> </div> <div class="select_item clearfix left"> <div class="select_tit left">选择嘉宾:</div> <div class="select_module_con left"> <div class="select_result"> <span>选择嘉宾</span> <div class="triangle"></div> </div> <ul> <li>嘉宾1</li> <li>嘉宾2</li> <li>嘉宾3</li> </ul> </div> </div> </div></body></html>以上就是本文的全部内容，希望本文的内容对大家的学习或者工作能带来一定的帮助，同时也希望多多支持wanshiok.com！
js,下拉框
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