Bootstrap 3 Off -canvas Menu

HTML

<link rel="stylesheet" href="http://getbootstrap.com/dist/css/bootstrap.min.css">
<script src="http://getbootstrap.com/dist/js/bootstrap.min.js"></script>
    <div class="navbar navbar-fixed-top navbar-inverse  visible-sm"" role="navigation">
      <div class="container">
        <div class="navbar-header">
          <button type="button" class="navbar-toggle" data-toggle="collapse" data-target=".navbar-collapse">
            <span class="sr-only">Toggle navigation</span>
            <span class="icon-bar"></span>
            <span class="icon-bar"></span>
            <span class="icon-bar"></span>
          </button>
          <a class="navbar-brand" href="#">Project name</a>
        </div>
        <div class="collapse navbar-collapse">
          <ul class="nav navbar-nav">
            <li class="active"><a href="#">Home</a></li>
            <li><a href="#about">About</a></li>
            <li><a href="#contact">Contact</a></li>
          </ul>
        </div><!-- /.nav-collapse -->
      </div><!-- /.container -->
    </div><!-- /.navbar -->

    <div class="container">

      <div class="row row-offcanvas row-offcanvas-right">

        <div class="col-xs-12 col-sm-9">
          <p class="pull-right visible-xs">
            <button type="button" class="btn btn-primary btn-xs" data-toggle="offcanvas">Toggle nav</button>
          </p>
          <div class="jumbotron">
            <h1>Hello, world!</h1>
            <p>This is an example to show the potential of an offcanvas layout pattern in Bootstrap. Try some responsive-range viewport sizes to see it in action.</p>
          </div>
          <div class="row">
            <div class="col-6 col-sm-6 col-lg-4">
              <h2>Heading</h2>
              <p>Donec id elit non mi porta gravida at eget metus. Fusce dapibus, tellus ac cursus commodo, tortor mauris condimentum nibh, ut fermentum massa justo sit amet risus. Etiam porta sem malesuada magna mollis euismod. Donec sed odio dui. </p>
              <p><a...

CSS

/*
 * Style tweaks
 * --------------------------------------------------
 */
html,
body {
  overflow-x: hidden; /* Prevent scroll on narrow devices */
}
body {
  padding-top: 70px;
}
footer {
  padding: 30px 0;
}

/*
 * Off Canvas
 * --------------------------------------------------
 */
@media screen and (max-width: 767px) {
  .row-offcanvas {
    position: relative;
    -webkit-transition: all .25s ease-out;
       -moz-transition: all .25s ease-out;
            transition: all .25s ease-out;
  }

  .row-offcanvas-right {
    right: 0;
  }

  .row-offcanvas-left {
    left: 0;
  }

  .row-offcanvas-right
  .sidebar-offcanvas {
    right: -50%; /* 6 columns */
  }

  .row-offcanvas-left
  .sidebar-offcanvas {
    left: -50%; /* 6 columns */
  }

  .row-offcanvas-right.active {
    right: 50%; /* 6 columns */
  }

  .row-offcanvas-left.active {
    left: 50%; /* 6 columns */
  }

  .sidebar-offcanvas {
    position: absolute;
    top: 0;
    width: 50%; /* 6 columns */
  }
}

JavaScript

$(document).ready(function () {
  $('.row-offcanvas').toggleClass('active')
  $('[data-toggle=offcanvas]').click(function () {
    $('.row-offcanvas').toggleClass('active')
  });
});