我正在關注Aurelia tutorial,我注意到引導可摺疊的導航欄根本不起作用。我發現有人的heroku app與完全相同的問題在線。Aurelia教程可摺疊的導航欄不工作
這裏是我的源
<template>
<require from="bootstrap/css/bootstrap.css"></require>
<require from="font-awesome/css/font-awesome.css"></require>
<nav class="navbar navbar-default navbar-fixed-top" role="navigation">
<div class="navbar-header">
<button type="button" class="navbar-toggle" data-toggle="collapse" data-target="#example-navbar-collapse">
<span class="sr-only">Toggle Navigation</span>
<span class="icon-bar"></span>
<span class="icon-bar"></span>
<span class="icon-bar"></span>
</button>
<a class="navbar-brand" href="#">
<i class="fa fa-home"></i>
<span>${router.title}</span>
</a>
</div>
<div class="collapse navbar-collapse" id="example-navbar-collapse">
<ul class="nav navbar-nav">
<li repeat.for="row of router.navigation" class="${row.isActive ? 'active' : ''}">
<a href.bind="row.href">${row.title}</a>
</li>
</ul>
<ul class="nav navbar-nav navbar-right">
<li class="loader" if.bind="router.isNavigating">
<i class="fa fa-spinner fa-spin fa-2x"></i>
</li>
</ul>
</div>
</nav>
<div class="page-host">
<router-view></router-view>
</div>
任何想法,什麼是怎麼回事呢?