bootstrap導航欄不出現

我在Bootstrap遇到問題。以下是禁用postgresql和turbolinks的rails應用程序頁面。讓我知道我做錯了什麼，我無法弄清楚。bootstrap導航欄不出現

<!DOCTYPE html> 
<html> 
<head> 
<title>Website</title> 
<%= csrf_meta_tags %> 

<%= stylesheet_link_tag 'application', media: 'all' %> 
<%= javascript_include_tag 'application' %> 
<link rel="stylesheet" 
href="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.7/css/bootstrap.min.css" 
integrity="sha384- 
BVYiiSIFeK1dGmJRAkycuHAHRg32OmUcww7on3RYdg4Va+PmSTsz/K68vbdEjh4u" 
crossorigin="anonymous"> 
</head> 
<body> 


<nav class="navbar navbar-toggleable-md navbar-light bg-faded"> 
<button class="navbar-toggler navbar-toggler-right" type="button" data- 
toggle="collapse" data-target="#navbarNav" aria-controls="navbarNav" aria- 
expanded="false" aria-label="Toggle navigation"> 
<span class="navbar-toggler-icon"></span> 
</button> 
<a class="navbar-brand" href="#">Navbar</a> 
<div class="collapse navbar-collapse" id="navbarNav"> 
<ul class="navbar-nav"> 
    <li class="nav-item active"> 
    <a class="nav-link" href="#">Home <span class="sr-only">(current)</span> 
</a> 
    </li> 
    <li class="nav-item"> 
    <a class="nav-link" href="#">Features</a> 
    </li> 
    <li class="nav-item"> 
    <a class="nav-link" href="#">Pricing</a> 
    </li> 
    <li class="nav-item"> 
    <a class="nav-link disabled" href="#">Disabled</a> 
    </li> 
    </ul> 
</div> 
</nav> 


<%= yield %> 
</body> 
</html>

The page looks as follows Browser console as follows, Using Bootstrap Gem and jquery Gem, let me know why I am recieving errors

來源

2017-06-20 realtomfeng

你不使用引導創業板的原因嗎？ – hashrocket

您可以在瀏覽器控制檯中添加輸出嗎？ –

我添加了控制檯鏡像。沒有理由我沒有使用寶石，我剛開始學習引導。 – realtomfeng

你只進口自舉的CSS。你也需要JS。

<script src="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.7/js/bootstrap.min.js" integrity="sha384-Tc5IQib027qvyjSMfHjOMaLkfuWVxZxUPnCJA7l2mCWNIpG9mGCD8wGNIcPD7Txa" crossorigin="anonymous"></script>

最好使用引導寶石，我經常使用bootstrap-sass

來源

2017-06-20 01:39:55

我正在使用bootstrap gem和jquery gem。它正在工作！ – realtomfeng

bootstrap導航欄不出現

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