sina-nav是一款Bootstrap4导航菜单插件。通过该插件可快速创建基于bootstrap4的下拉菜单、大型菜单，属性菜单和侧边栏菜单等。它的特点还有：

  • 支持无限级子菜单。
  • 响应式设计。
  • 支持隐藏侧边栏。
  • 通过Animate.css制作菜单动画效果。

使用方法

在页面中引入下面的文件。

<link rel="stylesheet" href="assets/css/bootstrap.min.css">
<link rel="stylesheet" href="assets/css/font-awesome.min.css">
<link rel="stylesheet" href="assets/css/animate.css">
<link rel="stylesheet" href="assets/css/sina-nav.css">
<script src="assets/js/jquery.min.js"></script>
<script src="assets/js/bootstrap.min.js"></script>
<script src="assets/js/wow.min.js"></script>
<script src="assets/js/sina-nav.js"></script>
HTML

导航菜单的基本HTML结构如下：

<nav class="sina-nav mobile-sidebar navbar-fixed" data-top="0">
  <div class="container">

    <div class="search-box">
      <form role="search" method="get" action="#">
        <span class="search-addon close-search"><i class="fa fa-times"></i></span>
        <div class="search-input">
          <input type="search" class="form-control" placeholder="Search here" value="" name="">
        </div>
        <span class="search-addon search-icon"><i class="fa fa-search"></i></span>
      </form>
    </div><!-- .search-box -->

    <div class="extension-nav">
      <ul>
        <li class="search"><a href="#"><i class="fa fa-search"></i></a></li>
        <li class="dropdown">
          <a href="#" class="dropdown-toggle" data-toggle="dropdown" >
            <i class="fa fa-shopping-bag"></i>
            <span class="shop-badge">2</span>
          </a>
          <ul class="dropdown-menu shop-menu">
            <li>
              <a href="#" class="shop-item-photo">
                <img src="#" alt="" />
              </a>
              <a href="#" class="shop-item-link">Delica omtantur</a>
              <p class="shop-item-price">2 - $19</p>
            </li>
            <li>
              <a href="#" class="shop-item-photo">
                <img src="#" alt="" />
              </a>
              <a href="#" class="shop-item-link">Delica omtantur</a>
              <p class="shop-item-price">2 - $19</p>
            </li>
            <li class="shop-total-price">
              <a href="#" class="btn btn-secondary shop-btn">Cart</a>
              <span>Total: $0.00</span>
            </li>
          </ul>
        </li>
        <li><a href="#"><i class="fa fa-facebook"></i></a></li>
        <li><a href="#"><i class="fa fa-twitter"></i></a></li>
        <li><a href="#"><i class="fa fa-linkedin"></i></a></li>
        <li class="widget-bar-btn"><a href="#"><i class="fa fa-bars"></i></a></li>
      </ul>
    </div><!-- .extension-nav -->

    <div class="sina-nav-header">
      <button type="button" class="navbar-toggle" data-toggle="collapse" data-target="#navbar-menu">
        <i class="fa fa-bars"></i>
      </button>
      <a class="sina-brand social-on" href="#">
        <h2>
          Sina-nav
        </h2>
        <p>Learn Something New</p>
      </a>
    </div><!-- .sina-nav-header -->

    <!-- Collect the nav links, forms, and other content for toggling -->
    <div class="collapse navbar-collapse" id="navbar-menu">
      <ul class="sina-menu" data-in="fadeInLeft" data-out="fadeInOut">
        <li class="scroll"><a href="#home">Home</a></li>
        <li class="active scroll"><a href="#about">About</a></li>
        <li class="dropdown">
          <a href="#" class="dropdown-toggle" data-toggle="dropdown" >Dropdown</a>
          <ul class="dropdown-menu">
            <li><a href="#">Custom Menu</a></li>
            <li><a href="#">Custom Menu<p class="description">This is Description</p></a>
            </li>
            <li class="dropdown">
              <a href="#" class="dropdown-toggle" data-toggle="dropdown" >Dropdown</a>
              <ul class="dropdown-menu">
                <li><a href="#">Custom Menu</a></li>
                <li><a href="#">Custom Menu</a></li>
                <li class="dropdown">
                  <a href="#" class="dropdown-toggle" data-toggle="dropdown" >Dropdown</a>
                  <ul class="dropdown-menu">
                    <li><a href="#">Custom Menu</a></li>
                    <li><a href="#">Custom Menu</a></li>
                    <li><a href="#">Custom Menu</a></li>
                  </ul>
                </li>
                <li><a href="#">Custom Menu</a></li>
              </ul>
            </li>
          </ul>
        </li>
        <li class="dropdown menu-item-has-mega-menu">
          <a href="#" class="dropdown-toggle" data-toggle="dropdown">Megamenu</a>
          <div class="mega-menu dropdown-menu">
            <ul class="mega-menu-row" role="menu">
              <li class="mega-menu-col col-md-4">
                <h4 class="mega-menu-col-title">Menu Titlle</h4>
                <ul class="sub-menu">
                  <li><a href="#">Custom Menu</a></li>
                  <li><a href="#">Custom Menu</a></li>
                  <li><a href="#">Custom Menu</a></li>
                </ul>
              </li>
              <li class="mega-menu-col col-md-4">
                <h4 class="mega-menu-col-title">Menu Titlle</h4>
                <ul class="sub-menu">
                  <li><a href="#">Custom Menu</a></li>
                  <li><a href="#">Custom Menu</a></li>
                  <li><a href="#">Custom Menu</a></li>
                </ul>
              </li>
              <li class="mega-menu-col col-md-4">
                <h4 class="mega-menu-col-title">Menu Titlle</h4>
                <ul class="sub-menu">
                  <li><a href="#">Custom Menu</a></li>
                  <li><a href="#">Custom Menu</a></li>
                  <li><a href="#">Custom Menu</a></li>
                </ul>
              </li>
            </ul><!-- end row -->
          </div>
        </li>
        <li class="scroll"><a href="#blog">Blog</a></li>
        <li class="scroll"><a href="#contact">Contact</a></li>
      </ul>
    </div><!-- /.navbar-collapse -->
  </div><!-- .container -->

  <!-- Start widget-bar -->
  <div class="widget-bar">
    <a href="#" class="close-widget-bar"><i class="fa fa-times"></i></a>
    <div class="widget">
      <h6 class="title">Custom Pages</h6>
      <ul class="link">
        <li><a href="#">About</a></li>
        <li><a href="#">Services</a></li>
        <li><a href="#">Blog</a></li>
        <li><a href="#">Portfolio</a></li>
        <li><a href="#">Contact</a></li>
      </ul>
    </div>
    <div class="widget">
      <h6 class="title">Additional Links</h6>
      <ul class="link">
        <li><a href="#">Retina Homepage</a></li>
        <li><a href="#">New Page Examples</a></li>
        <li><a href="#">Parallax Sections</a></li>
        <li><a href="#">Shortcode Central</a></li>
        <li><a href="#">Ultimate Font Collection</a></li>
      </ul>
    </div>
  </div>
  <!-- End widget-bar -->
</nav>

该Bootstrap4导航菜单的github网址为：https://github.com/shaonsina/sina-nav-4