Bootstrap - 默认折叠边栏

Question

我有一个基于 bootstrap 3.3.7 的项目。我想要实现的是将切换按钮连接到侧边栏。因此，当用户单击该按钮时，左侧会显示一个侧边栏。这是我目前拥有的代码：

HTML:

<div class="wrapper">
  <!-- Sidebar Holder -->
  <nav id="sidebar">
  
    <div class="sidebar-header">
      <h3>Test</h3>
      
    </div>

    <ul class="list-unstyled components">
      <p>Dummy Heading</p>
      <li class="active">
        <a href="#homeSubmenu" data-toggle="collapse" aria-expanded="false">Home</a>
        <ul class="collapse list-unstyled" id="homeSubmenu">
          <li><a href="#">Home 1</a></li>
          <li><a href="#">Home 2</a></li>
          <li><a href="#">Home 3</a></li>
        </ul>
      </li>
    </ul>

    <ul class="list-unstyled CTAs">
      <li><a href="https://bootstrapious.com/p/bootstrap-sidebar" class="article">Back to the article</a></li>
    </ul>
  </nav>

  <!-- Page Content Holder -->
  <div id="content">
          <button type="button" id="sidebarCollapse" class="btn btn-info navbar-btn">
                                <i class="glyphicon glyphicon-align-left"></i>
                                
                            </button>
      <div class="container-fluid">
    <h2>Collapsible Sidebar Using Bootstrap 3</h2></div></div>

JS:

$(document).ready(function() {
  $("#sidebarCollapse").on("click", function() {
    $("#sidebar").toggleClass("active");
    $(this).toggleClass("active");
  });
});

CSS:

.navbar {
  padding: 15px 10px;
  background: #fff;
  border: none;
  border-radius: 0;
  margin-bottom: 40px;
  box-shadow: 1px 1px 3px rgba(0, 0, 0, 0.1);
}

.navbar-btn {
  box-shadow: none;
  outline: none !important;
  border: none;
}

.line {
  width: 100%;
  height: 1px;
  border-bottom: 1px dashed #ddd;
  margin: 40px 0;
}


/* ---------------------------------------------------
    SIDEBAR STYLE
----------------------------------------------------- */

.wrapper {
  display: flex;
  align-items: stretch;
}

#sidebar {
  min-width: 250px;
  max-width: 250px;
  background: #7386D5;
  color: #fff;
  transition: all 0.3s;
}

#sidebar a,
#sidebar a:hover,
#sidebar a:focus {
  color: inherit;
}

#sidebar.active {
  margin-left: -250px;
}

#sidebar .sidebar-header {
  padding: 20px;
  background: #6d7fcc;
}

#sidebar ul.components {
  padding: 20px 0;
  border-bottom: 1px solid #47748b;
}

#sidebar ul p {
  color: #fff;
  padding: 10px;
}

#sidebar ul li a {
  padding: 10px;
  font-size: 1.1em;
  display: block;
}

#sidebar ul li a:hover {
  color: #7386D5;
  background: #fff;
}

#sidebar ul li.active > a,
a[aria-expanded="true"] {
  color: #fff;
  background: #6d7fcc;
}

a[data-toggle="collapse"] {
  position: relative;
}

a[aria-expanded="false"]::before,
a[aria-expanded="true"]::before {
  content: '\e259';
  display: block;
  position: absolute;
  right: 20px;
  font-family: 'Glyphicons Halflings';
  font-size: 0.6em;
}

a[aria-expanded="true"]::before {
  content: '\e260';
}

ul ul a {
  font-size: 0.9em !important;
  padding-left: 30px !important;
  background: #6d7fcc;
}

ul.CTAs {
  padding: 20px;
}

ul.CTAs a {
  text-align: center;
  font-size: 0.9em !important;
  display: block;
  border-radius: 5px;
  margin-bottom: 5px;
}

a.download {
  background: #fff;
  color: #7386D5;
}

a.article,
a.article:hover {
  background: #6d7fcc !important;
  color: #fff !important;
}


/* ---------------------------------------------------
    CONTENT STYLE
----------------------------------------------------- */

#content {
  padding: 20px;
  min-height: 100vh;
  transition: all 0.3s;
}

#content p a {
  color:
}


/* ---------------------------------------------------
    MEDIAQUERIES
----------------------------------------------------- */

@media (max-width: 768px) {
  #sidebar {
    margin-left: -250px;
  }
  #sidebar.active {
    margin-left: 0;
  }
}

代码有效，但我确实有一个问题 - 我想一直隐藏边栏。因此，只需单击按钮即可显示它。我浏览了 bootstrap 文档，但没有 class/info 如何使用此类功能增强此代码。

感谢任何提示..

Answer 1

我认为你把activeclass的参数切换了，这样你也可以去掉最后一个mediaquery。试试这个

.navbar {
  padding: 15px 10px;
  background: #fff;
  border: none;
  border-radius: 0;
  margin-bottom: 40px;
  box-shadow: 1px 1px 3px rgba(0, 0, 0, 0.1);
}

.navbar-btn {
  box-shadow: none;
  outline: none !important;
  border: none;
}

.line {
  width: 100%;
  height: 1px;
  border-bottom: 1px dashed #ddd;
  margin: 40px 0;
}


/* ---------------------------------------------------
    SIDEBAR STYLE
----------------------------------------------------- */

.wrapper {
  display: flex;
  align-items: stretch;
}

#sidebar {
  min-width: 250px;
  max-width: 250px;
  background: #7386D5;
  color: #fff;
  transition: all 0.3s;
}

#sidebar a,
#sidebar a:hover,
#sidebar a:focus {
  color: inherit;
}

#sidebar {
  margin-left:-250px;
}
#sidebar.active {
  margin-left: 0;
}

#sidebar .sidebar-header {
  padding: 20px;
  background: #6d7fcc;
}

#sidebar ul.components {
  padding: 20px 0;
  border-bottom: 1px solid #47748b;
}

#sidebar ul p {
  color: #fff;
  padding: 10px;
}

#sidebar ul li a {
  padding: 10px;
  font-size: 1.1em;
  display: block;
}

#sidebar ul li a:hover {
  color: #7386D5;
  background: #fff;
}

#sidebar ul li.active > a,
a[aria-expanded="true"] {
  color: #fff;
  background: #6d7fcc;
}

a[data-toggle="collapse"] {
  position: relative;
}

a[aria-expanded="false"]::before,
a[aria-expanded="true"]::before {
  content: '\e259';
  display: block;
  position: absolute;
  right: 20px;
  font-family: 'Glyphicons Halflings';
  font-size: 0.6em;
}

a[aria-expanded="true"]::before {
  content: '\e260';
}

ul ul a {
  font-size: 0.9em !important;
  padding-left: 30px !important;
  background: #6d7fcc;
}

ul.CTAs {
  padding: 20px;
}

ul.CTAs a {
  text-align: center;
  font-size: 0.9em !important;
  display: block;
  border-radius: 5px;
  margin-bottom: 5px;
}

a.download {
  background: #fff;
  color: #7386D5;
}

a.article,
a.article:hover {
  background: #6d7fcc !important;
  color: #fff !important;
}


/* ---------------------------------------------------
    CONTENT STYLE
----------------------------------------------------- */

#content {
  padding: 20px;
  min-height: 100vh;
  transition: all 0.3s;
}

#content p a {
  color:
}

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