Bootstrap v4 Navbar bug?
Question
Here is the problem. I took default navbar example from bootstrap side( https://v4-alpha.getbootstrap.com/components/navbar/ ). They show full size navbar in result, that can collapse, when screen gets smaller. But when I've inserted the code into my project, it shows this:
As you can see it is always collapsed. I tried a lot of other examples, but nothing workes. Here is the code:
<!DOCTYPE html> <html> <head> <title>Test area</title> <link rel="stylesheet" href="media/css/bootstrap.min.css"> </head> <body> <div class="header"> <div class="top-header"> <div class="container"> <nav class="navbar navbar-toggleable-md navbar-light bg-faded"> <button class="navbar-toggler navbar-toggler-right" type="button" data-toggle="collapse" data-target="#navbarNavAltMarkup" aria-controls="navbarNavAltMarkup" 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="navbarNavAltMarkup"> <div class="navbar-nav"> <a class="nav-item nav-link active" href="#">Home <span class="sr-only">(current)</span></a> <a class="nav-item nav-link" href="#">Features</a> <a class="nav-item nav-link" href="#">Pricing</a> <a class="nav-item nav-link disabled" href="#">Disabled</a> </div> </div> </nav> </div> </div> </div> <script src="media/js/jquery.min.js"></script> <script src="media/js/popper.min.js"></script> <script src="media/js/bootstrap.min.js"></script> </body> </html>
3 answers
solution1
5 ACCPTED 2017-08-27 16:49:52
The code you posted will only work on Bootstrap alpha 6, not beta. This is because the navbar-toggleable* classes have changed to navbar-expand* as of Bootstrap 4 beta.
Bootstrap 4.0.0 : https://www.codeply.com/go/0c0FC1Lrn2
<nav class="navbar navbar-expand-lg navbar-light bg-faded">
<a class="navbar-brand" href="#">Navbar</a>
<button class="navbar-toggler" type="button" data-toggle="collapse" data-target="#navbarNavAltMarkup" aria-controls="navbarNavAltMarkup" aria-expanded="false" aria-label="Toggle navigation">
<span class="navbar-toggler-icon"></span>
</button>
<div class="collapse navbar-collapse" id="navbarNavAltMarkup">
<div class="navbar-nav">
<a class="nav-item nav-link active" href="#">Home <span class="sr-only">(current)</span></a>
<a class="nav-item nav-link" href="#">Features</a>
<a class="nav-item nav-link" href="#">Pricing</a>
<a class="nav-item nav-link disabled" href="#">Disabled</a>
</div>
</div>
</nav>
Also see: Bootstrap 4 navbar layout works using CDN, breaks using downloaded code
solution2
0 2017-08-27 16:44:32
You need to add the required meta tags as described here :
<meta charset="utf-8">
<meta name="viewport" content="width=device-width, initial-scale=1, shrink-to-fit=no">
And use the correct css classes as described here
<nav class="navbar navbar-expand-lg navbar-light bg-light">
The navbar will collapse at the lg breakpoint
<!DOCTYPE html> <html> <head> <!-- Required meta tags --> <meta charset="utf-8"> <meta name="viewport" content="width=device-width, initial-scale=1, shrink-to-fit=no"> <title>Test area</title> <link rel="stylesheet" href="https://maxcdn.bootstrapcdn.com/bootstrap/4.0.0-beta/css/bootstrap.min.css" integrity="sha384-/Y6pD6FV/Vv2HJnA6t+vslU6fwYXjCFtcEpHbNJ0lyAFsXTsjBbfaDjzALeQsN6M" crossorigin="anonymous"> </head> <body> <div class="header"> <div class="top-header"> <div class="container"> <nav class="navbar navbar-expand-lg navbar-light bg-faded"> <button class="navbar-toggler navbar-toggler-right" type="button" data-toggle="collapse" data-target="#navbarNavAltMarkup" aria-controls="navbarNavAltMarkup" 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="navbarNavAltMarkup"> <div class="navbar-nav"> <a class="nav-item nav-link active" href="#">Home <span class="sr-only">(current)</span></a> <a class="nav-item nav-link" href="#">Features</a> <a class="nav-item nav-link" href="#">Pricing</a> <a class="nav-item nav-link disabled" href="#">Disabled</a> </div> </div> </nav> </div> </div> </div> <script src="https://code.jquery.com/jquery-3.2.1.slim.min.js" integrity="sha384-KJ3o2DKtIkvYIK3UENzmM7KCkRr/rE9/Qpg6aAZGJwFDMVNA/GpGFF93hXpG5KkN" crossorigin="anonymous"></script> <script src="https://cdnjs.cloudflare.com/ajax/libs/popper.js/1.11.0/umd/popper.min.js" integrity="sha384-b/U6ypiBEHpOf/4+1nzFpr53nxSS+GLCkfwBdFNTxtclqqenISfwAzpKaMNFNmj4" crossorigin="anonymous"></script> <script src="https://maxcdn.bootstrapcdn.com/bootstrap/4.0.0-beta/js/bootstrap.min.js" integrity="sha384-h0AbiXch4ZDo7tp9hKZ4TsHbi047NrKGLO3SEJAg45jXxnGIfYzk4Si90RDIqNm1" crossorigin="anonymous"></script> </body> </html>
solution3
0 2018-01-11 00:20:47
For anyone looking now the code now works with the current latest bootstrap.
npm install bootstrap@4.0.0-beta.3
Remember to hard-reload to verify the change!
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