javascript - Bootstrap - 多个可关闭的警报

Question

只有一个 X 被显示在第一个警报危险中；然而，警报信息框不显示 X 以消除 div:

fiddle : https://jsfiddle.net/mnuuuw13/

<div class="container">
    <div class="row">
            <div class="col-md-12">
                <div class="alert alert-danger alert-dismissable" role="alert">
                    <button type="button" class="close" data-dismiss="alert" aria-label="Close"><span aria-           hidden="true">&times;</span></button>
                    <strong><i class="fa fa-exclamation-triangle"></i> Alert:</strong> Placeholder for alert          information, if we ever need to display something crital! <a href="#" class="alert-link">Read more...</a>
                </div>
                <div class="alert alert-info alert-dismissable" role="alert">
                    <button type="button" class="close" data-dismiss="alert" aria-label="Close"><span aria-           hidden="true">&times;</span></button>
                    <strong><i class="fa fa-info-circle"></i> Info:</strong> Placeholder for any information alerts   we may want to display. <a href="#" class="alert-link">Read more...</a>
                </div> 
            </div>
        </div>
</div>

Answer 1

尝试删除 <span aria- hidden="true"> 中的多余空格

<nav class="navbar navbar-default">
    <div class="container">
        <div class="navbar-header">
            <button type="button" class="navbar-toggle collapsed" data-toggle="collapse" data-target="#bs-example-    navbar-collapse-1" aria-expanded="false">
                <span class="sr-only">Toggle navigation</span>
                <span class="icon-bar"></span>
                <span class="icon-bar"></span>
                <span class="icon-bar"></span>
            </button>
            <a href="#">
               HOLA
            </a>
        </div>
        <div class="collapse navbar-collapse" id="bs-example-navbar-collapse-1">
            <ul class="nav navbar-nav navbar-right">
                <li class="dropdown">
                <a href="#" class="dropdown-toggle" data-toggle="dropdown" role="button" aria-haspopup="true" aria-   expanded="false"><i class="fa fa-bell nav-icon"></i> <span class="label label-info">2</span> <span class="caret"></   span></a>
                  <ul class="dropdown-menu">
                      <li><a href="#">Notification 1</a></li>
                      <li><a href="#">Notificatoin 2</a></li>
                  </ul>
                </li>
                <li class="dropdown">
                <a href="#" class="dropdown-toggle" data-toggle="dropdown" role="button" aria-haspopup="true" aria-   expanded="false"><i class="fa fa-user nav-icon"></i> <span class="caret"></span></a>
                  <ul class="dropdown-menu">
                      <li><a href="#">Settings</a></li>
                      <li><a href="#">Logout</a></li>
                  </ul>
                </li>
            </ul>
            <form class="navbar-form navbar-right search-form" role="search">
                <div class="form-group">
                    <input type="text" class="form-control" placeholder="Search">
                </div>
                <button type="submit" class="btn btn-success">Search</button>
            </form>
        </div>
    </div>
</nav>
<nav class="navbar navbar-inverse">
    <div class="container">
        <ul class="nav navbar-nav">
            <li class="active"><a href="dashboard.html">Dashboard <span class="sr-only">(current)</span></a></li>
            <li><a href="#">Reporting</a></li>
            <li><a href="#">Billing</a></li>
            <li><a href="#">Catalog</a></li>
        </ul>
    </div>
</nav>

<div class="container">
    <div class="row">
            <div class="col-md-12">
                <div class="alert alert-danger alert-dismissable" role="alert">
                    <button type="button" class="close" data-dismiss="alert" aria-label="Close"><span aria-hidden="true">&times;</span></button>
                    <strong><i class="fa fa-exclamation-triangle"></i> Alert:</strong> Placeholder for alert          information, if we ever need to display something crital! <a href="#" class="alert-link">Read more...</a>
                </div>
                <div class="alert alert-info alert-dismissable" role="alert">
                    <button type="button" class="close" data-dismiss="alert" aria-label="Close"><span aria-hidden="true">&times;</span></button>
                    <strong><i class="fa fa-info-circle"></i> Info:</strong> Placeholder for any information alerts   we may want to display. <a href="#" class="alert-link">Read more...</a>
                </div> 
            </div>
        </div>
</div>

https://jsfiddle.net/itoriginal/mnuuuw13/1/