Html Boostrap折叠项未在按钮上工作，数据id正确，包含所有cdn_Html_Drop Down Menu_Bootstrap 4_Collapse

Html Boostrap折叠项未在按钮上工作，数据id正确，包含所有cdn

html drop-down-menu bootstrap-4

Html Boostrap折叠项未在按钮上工作，数据id正确，包含所有cdn,html,drop-down-menu,bootstrap-4,collapse,Html,Drop Down Menu,Bootstrap 4,Collapse,我正在尝试使用引导创建一个可折叠菜单。我的代码是： <head>  <link rel="stylesheet" href="https://stackpath.bootstrapcdn.com/bootstrap/4.2.1/css/bootstrap.min.css" integrity="sha384-GJzZqFGwb1QTTN6wy59ffF1BuGJpLSa9DkKMp0DgiMDm4iYM

我正在尝试使用引导创建一个可折叠菜单。我的代码是：

<head>
      <!-- BOOTSTRAP CSS CDN -->
<link rel="stylesheet" href="https://stackpath.bootstrapcdn.com/bootstrap/4.2.1/css/bootstrap.min.css" integrity="sha384-GJzZqFGwb1QTTN6wy59ffF1BuGJpLSa9DkKMp0DgiMDm4iYMj70gZWKYbI706tWS" crossorigin="anonymous">
<!-- FONT AWESOME CDN -->
<link rel="stylesheet" href="https://use.fontawesome.com/releases/v5.6.3/css/all.css" integrity="sha384-UHRtZLI+pbxtHCWp1t77Bi1L4ZtiqrqD80Kn4Z8NTSRyMA2Fd33n5dQ8lWUE00s/" crossorigin="anonymous">
<body>

<!-- NAVIGATION -->
<nav class="navbar navbar-expand-sm bg-dark navbar-dark fixed-top">
    <div class="container">
        <a href="index.html" class="navbar-brand">LandingPage</a>
        <button class="navbar-toggler" data-toggle="collapse" data-target="#navbarCollapse">
            <span class="navbar-toggler-icon"></span>
        </button>
        <div class="collapse navbar-collapse" id="navbarCollapse">
            <ul class="navbar-nav ml-auto">
                <li class="nav-item">
                    <a href="#home-section" class="nav-link">Home</a>
                </li>
                <li class="nav-item">
                    <a href="#info-section" class="nav-link">Info</a>
                </li>
                <li class="nav-item">
                    <a href="#create-section" class="nav-link">Create</a>
                </li>
            </ul>
        </div>
    </div>
</nav>
<!-- BOOTSTRAP JS CDN -->
<script src="https://code.jquery.com/jquery-3.3.1.slim.min.js" integrity="sha384-q8i/X+965DzO0rT7abK41JStQIAqVgRVzpbzo5smXKp4YfRvH+8abtTE1Pi6jizo"
    crossorigin="anonymous"></script>
<script src="https://cdnjs.cloudflare.com/ajax/libs/popper.js/1.14.6/umd/popper.min.js" integrity="sha384-wHAiFfRlMFy6i5SRaxvfOCifBUQy1xHdJ/yoi7FRNXMRBu5WHdZYu1hA6ZOblgut"
    crossorigin="anonymous"></script>
<scipt src="https://stackpath.bootstrapcdn.com/bootstrap/4.2.1/js/bootstrap.min.js" integrity="sha384-B0UglyR+jN6CkvvICOB2joaf5I4l3gm9GU6Hc1og6Ls7i6U/mkkaduKaBhlAXv9k"
    crossorigin="anonymous">
</script>

在导航部分，我有一个带有数据切换和数据目标的按钮，id是正确的，正如您所看到的，我有所有css和js引导cdn

在

scipt

中有打字错误，而不是

script