简洁的js和CSS3多级导航菜单

这是一款基于bootsnav的js和CSS3多级导航菜单效果。该多级导航菜单效果在bootsnav菜单的基础上进行了美化，使效果更加炫酷。

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 使用方法

在页面中引入bootstrap相关文件,jquery和bootsnav文件。

<link rel="stylesheet" href="css/bootstrap.min.css">

<link rel="stylesheet" href="css/font-awesome.min.css">

<link rel="stylesheet" href="css/bootsnav.css">

<script type="text/javascript" src="js/jquery.min.js"></script>

<script type="text/javascript" src="js/bootstrap.min.js"></script>

<script type="text/javascript" src="js/bootsnav.js"></script>                 

 HTML结构

该js和CSS3多级导航菜单的HTML结构如下：

<div class="container">

    <div class="row">

        <div class="col-md-12">

            <nav class="navbar navbar-default navbar-mobile bootsnav on">

                <div class="navbar-header">

                    <button type="button" class="navbar-toggle" data-toggle="collapse" data-target="#navbar-menu">

                        <i class="fa fa-bars"></i>

                    </button>

                </div>

                <div class="collapse navbar-collapse" id="navbar-menu">

                    <ul class="nav navbar-nav" data-in="fadeInDown" data-out="fadeOutUp">

                        <li><a href="#" data-hover="Home">Home</a></li>

                        <li><a href="#" data-hover="About">About</a></li>

                        <li class="dropdown">

                            <a href="#" class="dropdown-toggle" data-toggle="dropdown" data-hover="Shortcodes">Shortcodes</a>

                            <ul class="dropdown-menu animated">

                                <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">Sub Menu</a>

                                    <ul class="dropdown-menu animated">

                                        <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">Sub Menu</a>

                                            <ul class="dropdown-menu multi-dropdown animated">

                                                <li><a href="#">Custom Menu</a></li>

                                                <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>

                                <li><a href="#">Custom Menu</a></li>

                                <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="dropdown">

                            <a href="#" class="dropdown-toggle" data-toggle="dropdown" data-hover="Pages">Pages</a>

                            <ul class="dropdown-menu animated">

                                <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">Sub Menu</a>

                                    <ul class="dropdown-menu animated">

                                        <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">Sub Menu</a>

                                            <ul class="dropdown-menu multi-dropdown animated">

                                                <li><a href="#">Custom Menu</a></li>

                                                <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>

                                <li><a href="#">Custom Menu</a></li>

                                <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="#" data-hover="Portfolio">Portfolio</a></li>

                        <li class="dropdown megamenu-fw">

                            <a href="#" class="dropdown-toggle" data-toggle="dropdown">Megamenu</a>

                            <ul class="dropdown-menu megamenu-content animated" role="menu">

                                <li>

                                    <div class="row">

                                        <div class="col-menu col-md-3">

                                            <h6 class="title">Title Menu One</h6>

                                            <div class="content">

                                                <ul class="menu-col">

                                                    <li><a href="#">Custom Menu</a></li>

                                                    <li><a href="#">Custom Menu</a></li>

                                                    <li><a href="#">Custom Menu</a></li>

                                                    <li><a href="#">Custom Menu</a></li>

                                                    <li><a href="#">Custom Menu</a></li>

                                                </ul>

                                            </div>

                                        </div><!-- end col-3 -->

                                        <div class="col-menu col-md-3">

                                            <h6 class="title">Title Menu Two</h6>

                                            <div class="content">

                                                <ul class="menu-col">

                                                    <li><a href="#">Custom Menu</a></li>

                                                    <li><a href="#">Custom Menu</a></li>

                                                    <li><a href="#">Custom Menu</a></li>

                                                    <li><a href="#">Custom Menu</a></li>

                                                    <li><a href="#">Custom Menu</a></li>

                                                </ul>

                                            </div>

                                        </div><!-- end col-3 -->

                                        <div class="col-menu col-md-3">

                                            <h6 class="title">Title Menu Three</h6>

                                            <div class="content">

                                                <ul class="menu-col">

                                                    <li><a href="#">Custom Menu</a></li>

                                                    <li><a href="#">Custom Menu</a></li>

                                                    <li><a href="#">Custom Menu</a></li>

                                                    <li><a href="#">Custom Menu</a></li>

                                                    <li><a href="#">Custom Menu</a></li>

                                                </ul>

                                            </div>

                                        </div>

                                        <div class="col-menu col-md-3">

                                            <h6 class="title">Title Menu Four</h6>

                                            <div class="content">

                                                <ul class="menu-col">

                                                    <li><a href="#">Custom Menu</a></li>

                                                    <li><a href="#">Custom Menu</a></li>

                                                    <li><a href="#">Custom Menu</a></li>

                                                    <li><a href="#">Custom Menu</a></li>

                                                    <li><a href="#">Custom Menu</a></li>

                                                </ul>

                                            </div>

                                        </div><!-- end col-3 -->

                                    </div><!-- end row -->

                                </li>

                            </ul>

                        </li>

                        <li><a href="#" data-hover="Contact">Contact</a></li>

                    </ul>

                </div>

            </nav>

        </div>

    </div>

</div>

 CSS样式

然后通过下面的CSS代码来对该js和CSS3多级导航菜单进行美化。