具有本地js文件的Bootstrap 4切换按钮不起作用

Question

I don't get my toggle buttons working which I found here: https://codepen.io/aanjulena/pen/ZLZjzV

I have these files linked in the header section:

<link href="css/bootstrap.min.css" rel="stylesheet"/>
<link href="js/jquery-3.3.1.min.js" rel="script"/>
<link href="js/bootstrap.js" rel="script"/>
<link href="js/popper.js" rel="script"/>
<link href="css/switch.css" rel="stylesheet"/>
<link href="css/fontawesome-all.css" rel="stylesheet"/>
<link href="https://maxcdn.bootstrapcdn.com/font-awesome/4.7.0/css/font-awesome.min.css" rel="stylesheet"/>

My toggle button is rendered properly, but does not toggle on click:

<div class="col-sm-5">
  <button type="button" class="btn btn-lg btn-toggle" data-toggle="button" aria-pressed="false" autocomplete="off">
     <div class="handle"></div>
  </button>
</div>

Answer 1

You forgot the relevant part of the css contained in the codpen :

 .btn-toggle.active { background-color: #29b5a8; } .btn-toggle.btn-lg { margin: 0 5rem; padding: 0; position: relative; border: none; height: 2.5rem; width: 5rem; border-radius: 2.5rem; } .btn-toggle.btn-lg:focus, .btn-toggle.btn-lg.focus, .btn-toggle.btn-lg:focus.active, .btn-toggle.btn-lg.focus.active { outline: none; } .btn-toggle.btn-lg:before, .btn-toggle.btn-lg:after { line-height: 2.5rem; width: 5rem; text-align: center; font-weight: 600; font-size: 1rem; text-transform: uppercase; letter-spacing: 2px; position: absolute; bottom: 0; transition: opacity .25s; } .btn-toggle.btn-lg:before { content: 'Off'; left: -5rem; } .btn-toggle.btn-lg:after { content: 'On'; right: -5rem; opacity: .5; } .btn-toggle.btn-lg > .handle { position: absolute; top: 0.3125rem; left: 0.3125rem; width: 1.875rem; height: 1.875rem; border-radius: 1.875rem; background: #fff; transition: left .25s; } .btn-toggle.btn-lg.active { transition: background-color 0.25s; } .btn-toggle.btn-lg.active > .handle { left: 2.8125rem; transition: left .25s; } .btn-toggle.btn-lg.active:before { opacity: .5; } .btn-toggle.btn-lg.active:after { opacity: 1; } 

 <link rel="stylesheet" href="https://maxcdn.bootstrapcdn.com/bootstrap/4.0.0-alpha.6/css/bootstrap.min.css"> <script src="https://code.jquery.com/jquery-3.2.1.min.js"></script> <script src="https://cdnjs.cloudflare.com/ajax/libs/tether/1.4.0/js/tether.min.js"></script> <script src="https://maxcdn.bootstrapcdn.com/bootstrap/4.0.0-alpha.6/js/bootstrap.min.js"></script> <div class="col-sm-5"> <button type="button" class="btn btn-lg btn-toggle" data-toggle="button" aria-pressed="false" autocomplete="off"> <div class="handle"></div> </button> </div>