bootstrap组件之按钮式下拉菜单小结
时间：2021-02-11 11:21:14 | 栏目：JavaScript代码 | 点击：次
1、单按钮下拉菜单
基础的下拉菜单最外层是.dropdown的div
现在只需要改成.btnd-group的div就可以实现单按钮的下拉菜单
<div class="btn-group">
<button type="button" class="btn btn-default dropdown-toggle" data-toggle="dropdown">
Action <span class="caret"></span>
</button>
<ul class="dropdown-menu" role="menu">
<li><a href="#">Action</a></li>
<li><a href="#">Another action</a></li>
<li><a href="#">Something else here</a></li>
<li class="divider"></li>
<li><a href="#">Separated link</a></li>
</ul>
</div>
2、分裂式按钮下拉菜单
分裂式按钮下拉菜单，就是按钮和图表分离开
<div class="btn-group">
<button type="button" class="btn btn-danger">Action</button>
<button type="button" class="btn btn-danger dropdown-toggle" data-toggle="dropdown">
<span class="caret"></span>
</button>
<ul class="dropdown-menu" role="menu">
<li><a href="#">Action</a></li>
<li><a href="#">Another action</a></li>
<li><a href="#">Something else here</a></li>
<li class="divider"></li>
<li><a href="#">Separated link</a></li>
</ul>
</div>
3、尺寸
在button上添加.btn-lg.btn-sm.btn-xs可以控制按钮大小
<div class="btn-group"> <button class="btn btn-default btn-lg dropdown-toggle" type="button" data-toggle="dropdown"> Large button <span class="caret"></span> </button> <ul class="dropdown-menu" role="menu"> ... </ul> </div>
4、向上弹出式菜单
只需要在最外层的div上添加一个.dropup就可以实现向上弹出的菜单
<div class="btn-group dropup">
<button type="button" class="btn btn-danger">Action</button>
<button type="button" class="btn btn-danger dropdown-toggle" data-toggle="dropdown">
<span class="caret"></span>
</button>
<ul class="dropdown-menu" role="menu">
<li><a href="#">Action</a></li>
<li><a href="#">Another action</a></li>
<li><a href="#">Something else here</a></li>
<li class="divider"></li>
<li><a href="#">Separated link</a></li>
</ul>
</div>