如何默认打开侧边栏导航栏

Question

我正在使用可折叠侧边栏导航的网站上工作。它在加载时关闭时工作正常，但我想要做的是默认打开它，能够关闭并重新打开。

以下是使用的代码。如果您需要任何其他说明，请告诉我。

就像我说的那样，菜单打开和关闭很好，但我希望角色在开始打开时反转，然后在点击时关闭。我觉得这很小，我忽略了，但我只是不确定。

$(document).ready(function() {
  var trigger = $('.hamburger'),
    overlay = $('.overlay'),
    isClosed = false;

  trigger.click(function() {
    hamburger_cross();
  });

  function hamburger_cross() {

    if (isClosed == true) {
      //overlay.hide();
      trigger.removeClass('is-open');
      trigger.addClass('is-closed');
      isClosed = false;
    } else {
      //overlay.show();
      trigger.removeClass('is-closed');
      trigger.addClass('is-open');
      isClosed = true;
    }
  }

  $('[data-toggle="offcanvas"]').click(function() {
    $('#wrapper').toggleClass('toggled');
  });
});

body {
  position: relative;
  overflow-x: hidden;
}
body,
html {
  height: 100%;
}
.nav .open > a,
.nav .open > a:hover,
.nav .open > a:focus {
  background-color: transparent;
}
/*-------------------------------*/

/*           Wrappers            */

/*-------------------------------*/

#wrapper {
  padding-left: 0;
  -webkit-transition: all 0.5s ease;
  -moz-transition: all 0.5s ease;
  -o-transition: all 0.5s ease;
  transition: all 0.5s ease;
}
#wrapper.toggled {
  padding-left: 220px;
}
#sidebar-wrapper {
  z-index: 1000;
  left: 220px;
  width: 0;
  height: 100%;
  margin-left: -220px;
  overflow-y: auto;
  overflow-x: hidden;
  background: #1a1a1a;
  -webkit-transition: all 0.5s ease;
  -moz-transition: all 0.5s ease;
  -o-transition: all 0.5s ease;
  transition: all 0.5s ease;
}
#sidebar-wrapper::-webkit-scrollbar {
  display: none;
}
#wrapper.toggled #sidebar-wrapper {
  width: 220px;
}
#page-content-wrapper {
  width: 100%;
  padding-top: 70px;
}
#wrapper.toggled #page-content-wrapper {
  position: absolute;
  margin-right: -220px;
}
/*-------------------------------*/

/*     Sidebar nav styles        */

/*-------------------------------*/

.sidebar-nav {
  position: absolute;
  top: 0;
  width: 220px;
  margin: 0;
  padding: 0;
  list-style: none;
}
.sidebar-nav li {
  position: relative;
  line-height: 20px;
  display: inline-block;
  width: 100%;
}
.sidebar-nav li:before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  z-index: -1;
  height: 100%;
  width: 3px;
  background-color: #1c1c1c;
  -webkit-transition: width .2s ease-in;
  -moz-transition: width .2s ease-in;
  -ms-transition: width .2s ease-in;
  transition: width .2s ease-in;
}
.sidebar-nav li:first-child a {
  color: #fff;
  background-color: #1a1a1a;
}
.sidebar-nav li:nth-child(2):before {
  background-color: #ec1b5a;
}
.sidebar-nav li:nth-child(3):before {
  background-color: #79aefe;
}
.sidebar-nav li:nth-child(4):before {
  background-color: #314190;
}
.sidebar-nav li:nth-child(5):before {
  background-color: #279636;
}
.sidebar-nav li:nth-child(6):before {
  background-color: #7d5d81;
}
.sidebar-nav li:nth-child(7):before {
  background-color: #ead24c;
}
.sidebar-nav li:nth-child(8):before {
  background-color: #2d2366;
}
.sidebar-nav li:nth-child(9):before {
  background-color: #35acdf;
}
.sidebar-nav li:nth-child(10):before {
  background-color: #ec1b5a;
}
.sidebar-nav li:hover:before,
.sidebar-nav li.open:hover:before {
  width: 100%;
  -webkit-transition: width .2s ease-in;
  -moz-transition: width .2s ease-in;
  -ms-transition: width .2s ease-in;
  transition: width .2s ease-in;
}
.sidebar-nav li a {
  display: block;
  color: #ddd;
  text-decoration: none;
  padding: 10px 15px 10px 30px;
}
.sidebar-nav li a:hover,
.sidebar-nav li a:active,
.sidebar-nav li a:focus,
.sidebar-nav li.open a:hover,
.sidebar-nav li.open a:active,
.sidebar-nav li.open a:focus {
  color: #fff;
  text-decoration: none;
  background-color: transparent;
}
.sidebar-nav > .sidebar-brand {
  height: 65px;
  font-size: 20px;
  line-height: 44px;
}
.sidebar-nav .dropdown-menu {
  position: relative;
  width: 100%;
  padding: 0;
  margin: 0;
  border-radius: 0;
  border: none;
  background-color: #222;
  box-shadow: none;
}
/*-------------------------------*/

/*       Hamburger-Cross         */

/*-------------------------------*/

.hamburger {
  position: fixed;
  top: 20px;
  z-index: 999;
  display: block;
  width: 32px;
  height: 32px;
  margin-left: 15px;
  background: transparent;
  border: none;
}
.hamburger:hover,
.hamburger:focus,
.hamburger:active {
  outline: none;
}
.hamburger.is-closed:before {
  content: '';
  display: block;
  width: 100px;
  font-size: 14px;
  color: #fff;
  line-height: 32px;
  text-align: center;
  opacity: 0;
  -webkit-transform: translate3d(0, 0, 0);
  -webkit-transition: all .35s ease-in-out;
}
.hamburger.is-closed:hover:before {
  opacity: 1;
  display: block;
  -webkit-transform: translate3d(-100px, 0, 0);
  -webkit-transition: all .35s ease-in-out;
}
.hamburger.is-closed .hamb-top,
.hamburger.is-closed .hamb-middle,
.hamburger.is-closed .hamb-bottom,
.hamburger.is-open .hamb-top,
.hamburger.is-open .hamb-middle,
.hamburger.is-open .hamb-bottom {
  position: absolute;
  left: 0;
  height: 4px;
  width: 100%;
}
.hamburger.is-closed .hamb-top,
.hamburger.is-closed .hamb-middle,
.hamburger.is-closed .hamb-bottom {
  background-color: #1a1a1a;
}
.hamburger.is-closed .hamb-top {
  top: 5px;
  -webkit-transition: all .35s ease-in-out;
}
.hamburger.is-closed .hamb-middle {
  top: 50%;
  margin-top: -2px;
}
.hamburger.is-closed .hamb-bottom {
  bottom: 5px;
  -webkit-transition: all .35s ease-in-out;
}
.hamburger.is-closed:hover .hamb-top {
  top: 0;
  -webkit-transition: all .35s ease-in-out;
}
.hamburger.is-closed:hover .hamb-bottom {
  bottom: 0;
  -webkit-transition: all .35s ease-in-out;
}
.hamburger.is-open .hamb-top,
.hamburger.is-open .hamb-middle,
.hamburger.is-open .hamb-bottom {
  background-color: #1a1a1a;
}
.hamburger.is-open .hamb-top,
.hamburger.is-open .hamb-bottom {
  top: 50%;
  margin-top: -2px;
}
.hamburger.is-open .hamb-top {
  -webkit-transform: rotate(45deg);
  -webkit-transition: -webkit-transform .2s cubic-bezier(.73, 1, .28, .08);
}
.hamburger.is-open .hamb-middle {
  display: none;
}
.hamburger.is-open .hamb-bottom {
  -webkit-transform: rotate(-45deg);
  -webkit-transition: -webkit-transform .2s cubic-bezier(.73, 1, .28, .08);
}
.hamburger.is-open:before {
  content: '';
  display: block;
  width: 100px;
  font-size: 14px;
  color: #fff;
  line-height: 32px;
  text-align: center;
  opacity: 0;
  -webkit-transform: translate3d(0, 0, 0);
  -webkit-transition: all .35s ease-in-out;
}
.hamburger.is-open:hover:before {
  opacity: 1;
  display: block;
  -webkit-transform: translate3d(-100px, 0, 0);
  -webkit-transition: all .35s ease-in-out;
}
/*-------------------------------*/

/*            Overlay            */

/*-------------------------------*/

/*.overlay {
    position: fixed;
    display: none;
    width: 100%;
    height: 100%;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-color: rgba(250,250,250,.8);
    z-index: 1;
}*/

<script src="https://ajax.googleapis.com/ajax/libs/angularjs/1.2.23/angular.min.js"></script>
<script src="https://cdnjs.cloudflare.com/ajax/libs/react/15.1.0/react.min.js"></script>
<script src="https://cdnjs.cloudflare.com/ajax/libs/react/15.1.0/react-dom.min.js"></script>
<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>


<div id="wrapper">
  <div class="overlay"></div>

  <!-- Sidebar -->
  <nav class="navbar navbar-inverse navbar-fixed-top" id="sidebar-wrapper" role="navigation">
    <ul class="nav sidebar-nav">
      <li class="sidebar-brand">
        <a href="#">
                       Brand
                    </a>
      </li>
      <li>
        <a href="#">Home</a>
      </li>
      <li>
        <a href="#">Participant</a>
      </li>
      <li>
        <a href="#">Interaction</a>
      </li>
      <li>
        <a href="#">Fulfillment</a>
      </li>
      <li>
        <a href="#">Reports</a>
      </li>
      <li>
        <a href="#">References</a>
      </li>
      <li>
        <a href="#">Admin</a>
      </li>
    </ul>
  </nav>
  <!-- /#sidebar-wrapper -->

  <!-- Page Content -->
  <div id="page-content-wrapper">
    <button type="button" class="hamburger is-closed" data-toggle="offcanvas">
      <span class="hamb-top"></span>
      <span class="hamb-middle"></span>
      <span class="hamb-bottom"></span>
    </button>
    <div class="container">
      <div class="row">
        <div class="col-lg-8 col-lg-offset-2">
          <h1>Quit Smoking</h1>
          <p>Why I want to quit I would save money. I would not smell like a stale cigarette. I would not have to look for a place to smoke all the time. My health would be better. I don't like feeling addicted. My family would stop nagging me to quit. Food
            would taste better. I would fit in better socially. I would feel better about my future. I would set a good example for my family and friends.</p>
        </div>
      </div>
    </div>
  </div>
  <!-- /#page-content-wrapper -->

</div>
<!-- /#wrapper -->

Answer 1

只需在class="toggled"和<div id="wrapper" >

中添加isClosed = true;即可

并将<button type="button" class="hamburger is-open" data-toggle="offcanvas">的{​​{1}}类更改为is-closed

＆＃13;

＆＃13;

is-open

＆＃13;

$(document).ready(function() {
  var trigger = $('.hamburger'),
    overlay = $('.overlay'),
    isClosed = true;

  trigger.click(function() {
    hamburger_cross();
  });

  function hamburger_cross() {

    if (isClosed == true) {
      //overlay.hide();
      trigger.removeClass('is-open');
      trigger.addClass('is-closed');
      isClosed = false;
    } else {
      //overlay.show();
      trigger.removeClass('is-closed');
      trigger.addClass('is-open');
      isClosed = true;
    }
  }

  $('[data-toggle="offcanvas"]').click(function() {
    $('#wrapper').toggleClass('toggled');
  });
});

＆＃13;

body {
  position: relative;
  overflow-x: hidden;
}
body,
html {
  height: 100%;
}
.nav .open > a,
.nav .open > a:hover,
.nav .open > a:focus {
  background-color: transparent;
}
/*-------------------------------*/

/*           Wrappers            */

/*-------------------------------*/

#wrapper {
  padding-left: 0;
  -webkit-transition: all 0.5s ease;
  -moz-transition: all 0.5s ease;
  -o-transition: all 0.5s ease;
  transition: all 0.5s ease;
}
#wrapper.toggled {
  padding-left: 220px;
}
#sidebar-wrapper {
  z-index: 1000;
  left: 220px;
  width: 0;
  height: 100%;
  margin-left: -220px;
  overflow-y: auto;
  overflow-x: hidden;
  background: #1a1a1a;
  -webkit-transition: all 0.5s ease;
  -moz-transition: all 0.5s ease;
  -o-transition: all 0.5s ease;
  transition: all 0.5s ease;
}
#sidebar-wrapper::-webkit-scrollbar {
  display: none;
}
#wrapper.toggled #sidebar-wrapper {
  width: 220px;
}
#page-content-wrapper {
  width: 100%;
  padding-top: 70px;
}
#wrapper.toggled #page-content-wrapper {
  position: absolute;
  margin-right: -220px;
}
/*-------------------------------*/

/*     Sidebar nav styles        */

/*-------------------------------*/

.sidebar-nav {
  position: absolute;
  top: 0;
  width: 220px;
  margin: 0;
  padding: 0;
  list-style: none;
}
.sidebar-nav li {
  position: relative;
  line-height: 20px;
  display: inline-block;
  width: 100%;
}
.sidebar-nav li:before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  z-index: -1;
  height: 100%;
  width: 3px;
  background-color: #1c1c1c;
  -webkit-transition: width .2s ease-in;
  -moz-transition: width .2s ease-in;
  -ms-transition: width .2s ease-in;
  transition: width .2s ease-in;
}
.sidebar-nav li:first-child a {
  color: #fff;
  background-color: #1a1a1a;
}
.sidebar-nav li:nth-child(2):before {
  background-color: #ec1b5a;
}
.sidebar-nav li:nth-child(3):before {
  background-color: #79aefe;
}
.sidebar-nav li:nth-child(4):before {
  background-color: #314190;
}
.sidebar-nav li:nth-child(5):before {
  background-color: #279636;
}
.sidebar-nav li:nth-child(6):before {
  background-color: #7d5d81;
}
.sidebar-nav li:nth-child(7):before {
  background-color: #ead24c;
}
.sidebar-nav li:nth-child(8):before {
  background-color: #2d2366;
}
.sidebar-nav li:nth-child(9):before {
  background-color: #35acdf;
}
.sidebar-nav li:nth-child(10):before {
  background-color: #ec1b5a;
}
.sidebar-nav li:hover:before,
.sidebar-nav li.open:hover:before {
  width: 100%;
  -webkit-transition: width .2s ease-in;
  -moz-transition: width .2s ease-in;
  -ms-transition: width .2s ease-in;
  transition: width .2s ease-in;
}
.sidebar-nav li a {
  display: block;
  color: #ddd;
  text-decoration: none;
  padding: 10px 15px 10px 30px;
}
.sidebar-nav li a:hover,
.sidebar-nav li a:active,
.sidebar-nav li a:focus,
.sidebar-nav li.open a:hover,
.sidebar-nav li.open a:active,
.sidebar-nav li.open a:focus {
  color: #fff;
  text-decoration: none;
  background-color: transparent;
}
.sidebar-nav > .sidebar-brand {
  height: 65px;
  font-size: 20px;
  line-height: 44px;
}
.sidebar-nav .dropdown-menu {
  position: relative;
  width: 100%;
  padding: 0;
  margin: 0;
  border-radius: 0;
  border: none;
  background-color: #222;
  box-shadow: none;
}
/*-------------------------------*/

/*       Hamburger-Cross         */

/*-------------------------------*/

.hamburger {
  position: fixed;
  top: 20px;
  z-index: 999;
  display: block;
  width: 32px;
  height: 32px;
  margin-left: 15px;
  background: transparent;
  border: none;
}
.hamburger:hover,
.hamburger:focus,
.hamburger:active {
  outline: none;
}
.hamburger.is-closed:before {
  content: '';
  display: block;
  width: 100px;
  font-size: 14px;
  color: #fff;
  line-height: 32px;
  text-align: center;
  opacity: 0;
  -webkit-transform: translate3d(0, 0, 0);
  -webkit-transition: all .35s ease-in-out;
}
.hamburger.is-closed:hover:before {
  opacity: 1;
  display: block;
  -webkit-transform: translate3d(-100px, 0, 0);
  -webkit-transition: all .35s ease-in-out;
}
.hamburger.is-closed .hamb-top,
.hamburger.is-closed .hamb-middle,
.hamburger.is-closed .hamb-bottom,
.hamburger.is-open .hamb-top,
.hamburger.is-open .hamb-middle,
.hamburger.is-open .hamb-bottom {
  position: absolute;
  left: 0;
  height: 4px;
  width: 100%;
}
.hamburger.is-closed .hamb-top,
.hamburger.is-closed .hamb-middle,
.hamburger.is-closed .hamb-bottom {
  background-color: #1a1a1a;
}
.hamburger.is-closed .hamb-top {
  top: 5px;
  -webkit-transition: all .35s ease-in-out;
}
.hamburger.is-closed .hamb-middle {
  top: 50%;
  margin-top: -2px;
}
.hamburger.is-closed .hamb-bottom {
  bottom: 5px;
  -webkit-transition: all .35s ease-in-out;
}
.hamburger.is-closed:hover .hamb-top {
  top: 0;
  -webkit-transition: all .35s ease-in-out;
}
.hamburger.is-closed:hover .hamb-bottom {
  bottom: 0;
  -webkit-transition: all .35s ease-in-out;
}
.hamburger.is-open .hamb-top,
.hamburger.is-open .hamb-middle,
.hamburger.is-open .hamb-bottom {
  background-color: #1a1a1a;
}
.hamburger.is-open .hamb-top,
.hamburger.is-open .hamb-bottom {
  top: 50%;
  margin-top: -2px;
}
.hamburger.is-open .hamb-top {
  -webkit-transform: rotate(45deg);
  -webkit-transition: -webkit-transform .2s cubic-bezier(.73, 1, .28, .08);
}
.hamburger.is-open .hamb-middle {
  display: none;
}
.hamburger.is-open .hamb-bottom {
  -webkit-transform: rotate(-45deg);
  -webkit-transition: -webkit-transform .2s cubic-bezier(.73, 1, .28, .08);
}
.hamburger.is-open:before {
  content: '';
  display: block;
  width: 100px;
  font-size: 14px;
  color: #fff;
  line-height: 32px;
  text-align: center;
  opacity: 0;
  -webkit-transform: translate3d(0, 0, 0);
  -webkit-transition: all .35s ease-in-out;
}
.hamburger.is-open:hover:before {
  opacity: 1;
  display: block;
  -webkit-transform: translate3d(-100px, 0, 0);
  -webkit-transition: all .35s ease-in-out;
}
/*-------------------------------*/

/*            Overlay            */

/*-------------------------------*/

/*.overlay {
    position: fixed;
    display: none;
    width: 100%;
    height: 100%;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-color: rgba(250,250,250,.8);
    z-index: 1;
}*/

＆＃13;

＆＃13;

＆＃13;

Answer 2

只需反转您的切换类，当然您必须更改按钮类才能开始将其显示为打开而不是关闭。试试这个：

＆＃13;

＆＃13;

$(document).ready(function() {
  var trigger = $('.hamburger'),
    overlay = $('.overlay'),
    isClosed = true;

  trigger.click(function() {
    hamburger_cross();
  });

  function hamburger_cross() {

    if (isClosed == true) {
      //overlay.hide();
      trigger.removeClass('is-open');
      trigger.addClass('is-closed');
      isClosed = false;
    } else {
      //overlay.show();
      trigger.removeClass('is-closed');
      trigger.addClass('is-open');
      isClosed = true;
    }
  }

  $('[data-toggle="offcanvas"]').click(function() {
    $('#wrapper').toggleClass('toggled');
  });
});

＆＃13;

body {
  position: relative;
  overflow-x: hidden;
}
body,
html {
  height: 100%;
}
.nav .open > a,
.nav .open > a:hover,
.nav .open > a:focus {
  background-color: transparent;
}
/*-------------------------------*/

/*           Wrappers            */

/*-------------------------------*/

#wrapper {
  padding-left: 220px; //Instead of 0px
  -webkit-transition: all 0.5s ease;
  -moz-transition: all 0.5s ease;
  -o-transition: all 0.5s ease;
  transition: all 0.5s ease;
}
#wrapper.toggled {
  padding-left: 0px; //Instead of 220px
}
#sidebar-wrapper {
  z-index: 1000;
  left: 220px;
  width: 0;
  height: 100%;
  margin-left: -220px;
  overflow-y: auto;
  overflow-x: hidden;
  background: #1a1a1a;
  -webkit-transition: all 0.5s ease;
  -moz-transition: all 0.5s ease;
  -o-transition: all 0.5s ease;
  transition: all 0.5s ease;
}
#sidebar-wrapper::-webkit-scrollbar {
  display: none;
}
#wrapper.toggled #sidebar-wrapper {
  width: 220px;
}
#page-content-wrapper {
  width: 100%;
  padding-top: 70px;
}
#wrapper.toggled #page-content-wrapper {
  position: absolute;
  margin-right: -220px;
}
/*-------------------------------*/

/*     Sidebar nav styles        */

/*-------------------------------*/

.sidebar-nav {
  position: absolute;
  top: 0;
  width: 220px;
  margin: 0;
  padding: 0;
  list-style: none;
}
.sidebar-nav li {
  position: relative;
  line-height: 20px;
  display: inline-block;
  width: 100%;
}
.sidebar-nav li:before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  z-index: -1;
  height: 100%;
  width: 3px;
  background-color: #1c1c1c;
  -webkit-transition: width .2s ease-in;
  -moz-transition: width .2s ease-in;
  -ms-transition: width .2s ease-in;
  transition: width .2s ease-in;
}
.sidebar-nav li:first-child a {
  color: #fff;
  background-color: #1a1a1a;
}
.sidebar-nav li:nth-child(2):before {
  background-color: #ec1b5a;
}
.sidebar-nav li:nth-child(3):before {
  background-color: #79aefe;
}
.sidebar-nav li:nth-child(4):before {
  background-color: #314190;
}
.sidebar-nav li:nth-child(5):before {
  background-color: #279636;
}
.sidebar-nav li:nth-child(6):before {
  background-color: #7d5d81;
}
.sidebar-nav li:nth-child(7):before {
  background-color: #ead24c;
}
.sidebar-nav li:nth-child(8):before {
  background-color: #2d2366;
}
.sidebar-nav li:nth-child(9):before {
  background-color: #35acdf;
}
.sidebar-nav li:nth-child(10):before {
  background-color: #ec1b5a;
}
.sidebar-nav li:hover:before,
.sidebar-nav li.open:hover:before {
  width: 100%;
  -webkit-transition: width .2s ease-in;
  -moz-transition: width .2s ease-in;
  -ms-transition: width .2s ease-in;
  transition: width .2s ease-in;
}
.sidebar-nav li a {
  display: block;
  color: #ddd;
  text-decoration: none;
  padding: 10px 15px 10px 30px;
}
.sidebar-nav li a:hover,
.sidebar-nav li a:active,
.sidebar-nav li a:focus,
.sidebar-nav li.open a:hover,
.sidebar-nav li.open a:active,
.sidebar-nav li.open a:focus {
  color: #fff;
  text-decoration: none;
  background-color: transparent;
}
.sidebar-nav > .sidebar-brand {
  height: 65px;
  font-size: 20px;
  line-height: 44px;
}
.sidebar-nav .dropdown-menu {
  position: relative;
  width: 100%;
  padding: 0;
  margin: 0;
  border-radius: 0;
  border: none;
  background-color: #222;
  box-shadow: none;
}
/*-------------------------------*/

/*       Hamburger-Cross         */

/*-------------------------------*/

.hamburger {
  position: fixed;
  top: 20px;
  z-index: 999;
  display: block;
  width: 32px;
  height: 32px;
  margin-left: 15px;
  background: transparent;
  border: none;
}
.hamburger:hover,
.hamburger:focus,
.hamburger:active {
  outline: none;
}
.hamburger.is-closed:before {
  content: '';
  display: block;
  width: 100px;
  font-size: 14px;
  color: #fff;
  line-height: 32px;
  text-align: center;
  opacity: 0;
  -webkit-transform: translate3d(0, 0, 0);
  -webkit-transition: all .35s ease-in-out;
}
.hamburger.is-closed:hover:before {
  opacity: 1;
  display: block;
  -webkit-transform: translate3d(-100px, 0, 0);
  -webkit-transition: all .35s ease-in-out;
}
.hamburger.is-closed .hamb-top,
.hamburger.is-closed .hamb-middle,
.hamburger.is-closed .hamb-bottom,
.hamburger.is-open .hamb-top,
.hamburger.is-open .hamb-middle,
.hamburger.is-open .hamb-bottom {
  position: absolute;
  left: 0;
  height: 4px;
  width: 100%;
}
.hamburger.is-closed .hamb-top,
.hamburger.is-closed .hamb-middle,
.hamburger.is-closed .hamb-bottom {
  background-color: #1a1a1a;
}
.hamburger.is-closed .hamb-top {
  top: 5px;
  -webkit-transition: all .35s ease-in-out;
}
.hamburger.is-closed .hamb-middle {
  top: 50%;
  margin-top: -2px;
}
.hamburger.is-closed .hamb-bottom {
  bottom: 5px;
  -webkit-transition: all .35s ease-in-out;
}
.hamburger.is-closed:hover .hamb-top {
  top: 0;
  -webkit-transition: all .35s ease-in-out;
}
.hamburger.is-closed:hover .hamb-bottom {
  bottom: 0;
  -webkit-transition: all .35s ease-in-out;
}
.hamburger.is-open .hamb-top,
.hamburger.is-open .hamb-middle,
.hamburger.is-open .hamb-bottom {
  background-color: #1a1a1a;
}
.hamburger.is-open .hamb-top,
.hamburger.is-open .hamb-bottom {
  top: 50%;
  margin-top: -2px;
}
.hamburger.is-open .hamb-top {
  -webkit-transform: rotate(45deg);
  -webkit-transition: -webkit-transform .2s cubic-bezier(.73, 1, .28, .08);
}
.hamburger.is-open .hamb-middle {
  display: none;
}
.hamburger.is-open .hamb-bottom {
  -webkit-transform: rotate(-45deg);
  -webkit-transition: -webkit-transform .2s cubic-bezier(.73, 1, .28, .08);
}
.hamburger.is-open:before {
  content: '';
  display: block;
  width: 100px;
  font-size: 14px;
  color: #fff;
  line-height: 32px;
  text-align: center;
  opacity: 0;
  -webkit-transform: translate3d(0, 0, 0);
  -webkit-transition: all .35s ease-in-out;
}
.hamburger.is-open:hover:before {
  opacity: 1;
  display: block;
  -webkit-transform: translate3d(-100px, 0, 0);
  -webkit-transition: all .35s ease-in-out;
}
/*-------------------------------*/

/*            Overlay            */

/*-------------------------------*/

/*.overlay {
    position: fixed;
    display: none;
    width: 100%;
    height: 100%;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-color: rgba(250,250,250,.8);
    z-index: 1;
}*/

＆＃13;

<script src="https://ajax.googleapis.com/ajax/libs/angularjs/1.2.23/angular.min.js"></script>
<script src="https://cdnjs.cloudflare.com/ajax/libs/react/15.1.0/react.min.js"></script>
<script src="https://cdnjs.cloudflare.com/ajax/libs/react/15.1.0/react-dom.min.js"></script>
<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>


<div id="wrapper">
  <div class="overlay"></div>

  <!-- Sidebar -->
  <nav class="navbar navbar-inverse navbar-fixed-top" id="sidebar-wrapper" role="navigation">
    <ul class="nav sidebar-nav">
      <li class="sidebar-brand">
        <a href="#">
                       Brand
                    </a>
      </li>
      <li>
        <a href="#">Home</a>
      </li>
      <li>
        <a href="#">Participant</a>
      </li>
      <li>
        <a href="#">Interaction</a>
      </li>
      <li>
        <a href="#">Fulfillment</a>
      </li>
      <li>
        <a href="#">Reports</a>
      </li>
      <li>
        <a href="#">References</a>
      </li>
      <li>
        <a href="#">Admin</a>
      </li>
    </ul>
  </nav>
  <!-- /#sidebar-wrapper -->

  <!-- Page Content -->
  <div id="page-content-wrapper">
    <button type="button" class="hamburger is-open" data-toggle="offcanvas">
      <span class="hamb-top"></span>
      <span class="hamb-middle"></span>
      <span class="hamb-bottom"></span>
    </button>
    <div class="container">
      <div class="row">
        <div class="col-lg-8 col-lg-offset-2">
          <h1>Quit Smoking</h1>
          <p>Why I want to quit I would save money. I would not smell like a stale cigarette. I would not have to look for a place to smoke all the time. My health would be better. I don't like feeling addicted. My family would stop nagging me to quit. Food
            would taste better. I would fit in better socially. I would feel better about my future. I would set a good example for my family and friends.</p>
        </div>
      </div>
    </div>
  </div>
  <!-- /#page-content-wrapper -->

</div>
<!-- /#wrapper -->

＆＃13;

＆＃13;

＆＃13;

Answer 3

快速而肮脏的解决方案是将以下内容添加到>>> menu[1]() Stuffing a turkey 函数的末尾。

$(document).ready

如果您想在页面加载时向访问者显示动画，那么这可能是理想的结果。

https://jsfiddle.net/tb65wrfa/

Answer 4

添加 trigger.trigger('click'); 在文档就绪功能结束时。 （不要把它放在外面）

基本上我们正在做的是在文档准备就绪时立即模拟对该汉堡包图标的点击。所以你不需要改变任何现有的代码

http://api.jquery.com/trigger/

Answer 5

只需在toggled

中添加课程id="wrapper"即可

并将更改class="hamburger is-closed"添加到class="hamburger is-open"

Edited code