<!DOCTYPE HTML><html><head><meta http-equiv="Content-Type" content="text/html; charset=utf-8"><title>菜單項狀態(tài)</title><link rel="stylesheet" ></head><body>?<div class="dropdown">? <button class="btn btn-default dropdown-toggle" type="button" id="dropdownMenu1" data-toggle="dropdown">? ? 下拉菜單? ? <span class="caret"></span>? </button>? <ul class="dropdown-menu" role="menu" aria-labelledby="dropdownMenu1">? ? <li role="presentation" class="active"><a role="menuitem" tabindex="-1" href="#">下拉菜單項</a></li>? ? <li role="presentation"><a role="menuitem" tabindex="-1" href="#">下拉菜單項</a></li>? ? <li role="presentation"><a role="menuitem" tabindex="-1" href="#">下拉菜單項</a></li>? ? <li role="presentation" class="divider"></li>? ? <li role="presentation" class="disabled"><a role="menuitem" tabindex="-1" href="#">下拉菜單項</a></li>? </ul></div>?? <script src="https://cdnjs.cloudflare.com/ajax/libs/jquery/3.0.0-alpha1/jquery.min.js"></script>? <script src="https://cdnjs.cloudflare.com/ajax/libs/twitter-bootstrap/4.0.0-alpha/js/bootstrap.min.js"></script>?</body></html>
我在本地編輯這個bootstrap示例時，active樣式不顯示，不知道問題出在哪里
s10143129
2016-01-12 12:03:05