自定义下拉列表

 1 <div class="dropdownContainer">
 2     <div class="dropdownDefault">1</div>
 3     <span class="downArrow arrow"></span>
 4     <ul class="dropdrown-menu">
 5         <li><a href="#">1</a></li>
 6         <li><a href="#">2</a></li>
 7         <li><a href="#">6</a></li>
 8         <li><a href="#">8</a></li>
 9     </ul>
10 </div>

1 .dropdownContainer{position: relative;height: 30px;width: 100%;background: #555;}
2 .dropdownDefault{border:1px solid #ddd;line-height: 28px;text-indent: 0.5em;}
3 .dropdownContainer .downArrow{position: absolute;right: 5px;top: 9px}
4 .dropdrown-menu{position: absolute;top:100%;width: 100%;left: 0;background: #555;display: none;}
5 .dropdrown-menu li{line-height: 24px;}
6 .dropdrown-menu li a{display: inline-block;width: 100%;text-indent: 0.5em}
7 .dropdrown-menu li a:hover{background: #0078b6;font-size: 1.1em;}
8 .arrow{width: 0;height: 0;display: inline-block;cursor: pointer;}
9 .downArrow{border-left: 6px solid transparent;border-right: 6px solid transparent;border-top: 12px solid #fff;}

1 $(".dropdownDefault,.dropdownContainer .downArrow").click(function(){
2     $(this).siblings(".dropdrown-menu").show();
3 });
4  
5 $(".dropdrown-menu li a").click(function(){
6     $(this).parent().parent().siblings(".dropdownDefault").html($(this).html());
7     $(this).parent().parent().hide();
8 });