单击函数永远不会读取else语句来删除类

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我一直被困在一个滑动菜单上，但已经取得了一些进展。我不得不修改很多东西，使其适用于桌面和移动视口。我现在唯一坚持的就是让菜单在<640px视口中关闭。在我的代码片段和jsfiddle下面有很多代码，但对这个问题真正重要的唯一代码是下面的javascript：

$('#serviceClick').click( function () {
    var relative = $(this);
    if (!relative.hasClass('activeSol')) {
        $('#serviceNav').removeClass('activeSol');
        $('#serviceNav').addClass('activeSol').slideDown();
    } else  {
        $('#serviceNav').removeClass('activeSol').slideUp(500);
    }
    return false;
});

基本上我的else语句现在删除了类'activeSol`，然后向上滑动选择。

在移动视口中，单击“解决方案”后，菜单会展开，但当您再次单击“解决方案”时，没有任何反应。

enter image description here

似乎变量relative永远不会读作附加到它的类，使点击函数运行else。我做了一个简单的console.log，而其他人从未运行过。我尝试将click函数更改为change，但随后菜单永远不会触发。

有没有人从removeClass和serviceNav看到是什么导致我的其他声明不是slideUp？

JSfiddle link to see in mobile viewport.

$('#serviceClick').click( function () {
		var relative = $(this);
		if (!relative.hasClass('activeSol')) {
			$('#serviceNav').removeClass('activeSol');
			$('#serviceNav').addClass('activeSol').slideDown();
		} else  {
			$('#serviceNav').removeClass('activeSol').slideUp(500);
		}
		return false;
	});
	$('[data-pop-close]').on('click', function(e)  {
		//var targeted_pop = $(this).attr('data-pop-close');
		$('#serviceNav').removeClass('activeSol');
		$('body').css('overflow', 'auto');
		e.preventDefault();
	});
nav {
	background: #FFF;
	height: 70px;
	width: 100%;
	max-width: 100%;
	box-shadow: 0px 6px 15px -4px rgba(0,0,0,0.12);
	position: fixed;
	top: 0;
	z-index: 999;
	box-sizing: border-box;
}
#nav-logo {
	float: left;
	height: 100%;
	width: auto;
	display: block;
	position: relative;
	margin-left: 5%;
}
#nav-logo img {
	height: 80%;
	width: auto;
	position: absolute;
	top: 50%;
	transform: translateY(-50%);-webkit-transform: translateY(-50%);
}
#mobile-button {
	background-image: url("https://s3.us-east-2.amazonaws.com/mbkitsystems/menu.svg");
    background-size: 30px 30px;
	float: right;
	width: 30px;
	height: 30px;
	margin-right: 5%;
	margin-top: 15px;
	cursor: pointer;
	display: none;
	transition: ease 0.3s;-webkit-transition: ease 0.3s;
}
#mobile-button:hover {
	transition: ease 0.3s;-webkit-transition: ease 0.3s;
}
#nav-pop {
	float: right;
	display: block;
	margin-right: 5%;
	margin-top: 25px;
	transition: ease 0.5s;-webkit-transition: ease 0.5s;
}
#nav-pop.active {
	opacity: 1;
	background: rgba(0,0,0,0.8);
	background: #2f2f2f;
	right: 0;
	margin-top: 0;
	margin-right: 0;
	z-index: 999999;
	transition: ease 0.6s;-webkit-transition: ease 0.6s;
	transform: translateX(0);-webkit-transform: translateX(0);
	box-shadow: -9px 0px 9px 1px rgba(0,0,0,.2);
}
#nav-list li {
	display: inline-block;
	margin: 0 17px;
	vertical-align: top;
}
#nav-list li:first-child {
	margin-left: 0px;
}
#nav-list li:last-child {
	margin-right: 0px;
}
#nav-list li a, #serviceClick {
	text-decoration: none;
	font-family: 'Muli', sans-serif;
	font-size: .9rem;
	color: #747678;
	letter-spacing: 1px;
	vertical-align: top;
	transition: all .3s;-webkit-transition: all .3s;
	cursor: pointer;
}
#nav-list li a:after, #serviceClick:after {
	content: '';
    display: block;
	width: 0;
	margin-top: 6px;
	background: #b82222;
	height: 2px;
	transition: width .3s;
}
#nav-list li a:hover, #serviceClick:hover {
	color: #4b4b4b;
	transition: all .3s;-webkit-transition: all .3s;
}
#nav-list li a:hover:after, #serviceClick:hover:after {
    width: 100%;
    transition: width .3s;
}
#nav-list li a.navInverse {
	padding: 10px 12px;
	border-radius: 2px;
	box-sizing: border-box;
	font-family: 'Muli', sans-serif;
	font-size: 1.2rem;
	color: #FFF;
	border: 1px solid #b82222;
	background: linear-gradient(to right bottom, #b82222, #a51e1e);
	text-transform: uppercase;
	text-decoration: none;
	cursor: pointer;
}
#nav-list li a.navInverse:hover {
	background: #b82222;
	background: #FFF;
	color: #b82222;
	/*transition: all 0s;-webkit-transition: all 0s;*/
}
#nav-list li a.navInverse:after {
	content: '';
    display: none;
	width: 0px;
	height: 0px;
	transition: none;
}
#nav-pop-close {
	display: none;
}
#nav-pop-close, #close-panel {
	position: relative;
	top: 3%;
	left: 90%;
	background-image: url("https://s3.us-east-2.amazonaws.com/mbkitsystems/icon_close.png");
	background-size: 30px 30px;
    background-repeat: no-repeat;
	height: 30px;
	width: 30px;
	cursor: pointer;
}
/*- Service NAV -*/
#serviceNav {
    width: 100%;
    top: -40vh;
	left: 0;
    z-index: -1;
    position: fixed;
    background-color: rgba(0,0,0,0);
    height: 40vh;
    transition: all .4s;
	padding: 20px 0;
}
#serviceNav.activeSol {
    top: 0;
    width: 100%;
    background-color: rgba(0,0,0,.9);
    z-index: 99999;
	height: 40vh;
}
.popup-close {
	position: absolute;
	right: 12px;
	top: 12px;
	width: 32px;
	height: auto;
}
#serviceNavInner {
	margin: 0 5%;
	height: 100%;
	position: relative;
}
/*--- Block 1 ---*/
#serviceNavBlock1 {
	width: 33%;
	height: 100%;
	border-right: 1px solid rgba(255,255,255,.5);
	position: relative;
}
#serviceNavBlock1Wrap {
	width: 80%;	
	text-align: left;
}
/*--- Block 2 ---*/
#serviceNavBlock2 {
	width: 66.6%;
	height: 100%;
	margin: 10px auto;
	position: relative;
}
.servNavItemWrap {
	display: inline-block;
	vertical-align: top;
	width: 25%;
	margin-bottom: 50px;
	text-align: center;
	cursor: pointer;
	-webkit-backface-visibility: hidden;
}
.servNavItemWrap img {
	width: 75px;
	height: 75px;
	-webkit-transition: all 0.25s;transition: all 0.25s;
}
.servNavItemWrap:hover img {
	-webkit-transition: all 0.25s;transition: all 0.25s;
    -webkit-transform: scale(1.1);transform: scale(1.1);
	-webkit-backface-visibility: hidden;
}
.servNavItemWrap a {
	text-decoration: none;
	outline: none;
	box-sizing: border-box;
}
.servNavItemTitle {
	margin-top: 5px;
	-webkit-transition: all 0.25s;transition: all 0.25s;
}
.servNavItemWrap:hover .servNavItemTitle {
	color: #FFF;
	-webkit-transition: all 0.25s;transition: all 0.25s;
}

/*---------------------------------------------- MEDIA QUERY 640 --------------------------------------------*/

@media screen and (max-width:640px) {
  
  #mobile-button {
	display: block;
}
#nav-pop {
	float: none;
	opacity: 0;
	position: fixed;
	margin-top: 0;
	width: 75%;
	right: -100%;
	height: 100vh;
	transform: translateX(100%);-webkit-transform: translateX(100%);
}
#nav-pop-close {
	display: block;
	background-size: 20px 20px;
	height: 20px;
	width: 20px;
}
#nav-list {
	margin-top: 20px;
}
#nav-list li {
	display: block;
	position: relative;
	width: 100%;
	margin: 0;
	padding: 20px 10%;
	background: linear-gradient(to bottom right, #151515, #2f2f2f);
	background: #2f2f2f;
	text-align: left;
	cursor: pointer;
	border-bottom: .3px solid #FFF;
}
#quoteButton {
	position: absolute;
	width: 100%;
	bottom: 0;
	left: 0;
}
#nav-list li:hover #quoteButton {
	background: #2f2f2f;
}
#nav-list li:hover, #nav-list li:active {
	background: #000;
}
#nav-list li:first-child {
	margin-left: 0;
}
#nav-list li:last-child {
	margin: 20px auto;
	text-align: center;
	border-bottom: none;
	background: #2f2f2f;
	padding: 20px 0;
}
#nav-list li a, #serviceClick {
	font-family: 'Nunito', sans-serif;
	font-size: .8rem;
	color: #FFF;
	letter-spacing: .3rem;
}
#nav-list li a:after, #serviceClick:after {
    display: none;
}
#nav-list li a:hover, #serviceClick:hover {
	color: #FFF;
}
#nav-list li a:hover:after, #serviceClick:hover:after {
    width: 0%;
}
/*- Service NAV -*/
#serviceNav {
    width: 100%;
    z-index: 1;
    position: relative;
    background-color: rgba(0,0,0,0);
    height: 200px;
    transition: all .4s;
	padding: 10px 0;
	display: none;
	top: 0;
}
#serviceNav.activeSol {
    background-color: #000;
    z-index: 9999999;
	height: auto;
	min-height: 20%;
	top: 0;
	border-bottom: .01em solid #FFF;
}
.popup-close {
	display: none;
}
#serviceNavInner {
	margin: 0 2.5%;
}
/*--- Block 1 ---*/
#serviceNavBlock1 {
	width: 100%;
	height: 50px;
	border-right: none;
	display: block;
	position: relative;
}
#serviceNavBlock1Wrap {
	width: 100%;
	text-align: center;
}
#navOverviewT, #navOverviewP {
	display: none;
}
#solOverviewB {
	font-size: .7rem;
}
/*--- Block 2 ---*/
#serviceNavBlock2 {	
	width: 100%;
	height: 100%;
	margin: 10px auto;
	display: block;
}
.servNavItemWrap {
	display: inline-block;
	width: 25%;
	margin-bottom: 15px;
}
.servNavItemWrap img {
	width: 30px;
	height: 30px;
}
.servNavItemTitle {
	margin-top: 5px;
	font-size: .5rem;
}

}
<script src="https://ajax.googleapis.com/ajax/libs/jquery/1.11.1/jquery.min.js"></script>
<nav>
	<div id="nav-logo">
	</div>
	<div id="mobile-button"><img src="" class="hidden" alt=""></div>
	<div id="nav-pop">
	<div id="nav-pop-close"></div>
		<ul id="nav-list">
			<li><a href="http://localhost:8080/about.php">ABOUT</a></li>
			<li id="serviceClick">SOLUTIONS</li>
			<div id="serviceNav">
				<div id="serviceNavInner">
					<div id="serviceNavBlock1" class="iblock">
							<a href="http://localhost:8080/solutions.php"><button class="buttonInv2" id="solOverviewB">Solutions Overview</button></a>
					</div><div id="serviceNavBlock2" class="iblock">
					</div>
				</div>
			</div>
			<li><a href="http://localhost:8080/learn.php">LEARN</a></li>
			<li><a href="http://localhost:8080/contact.php">CONTACT</a></li>
			<li><a href="http://localhost:8080/quote.php" class="navInverse" id="quoteButton">REQUEST QUOTE</a></li>
		</ul>
	</div>
</nav>
答案

var relative = $(this);正在挑选serviceClick列表项目（li）然后你正在检查

    if (!relative.hasClass('activeSol')) {

但是你从未将类添加到li中，而是将它添加到div #serviceNav中。

我想改变

if (!relative.hasClass('activeSol')) {

至

if (!$('#serviceNav').hasClass('activeSol')) {

应该管用。

另一答案

你不应该检查$("#serviceClick")类activeSol，应该检查$("#serviceNav")而不是。

if (!$('#serviceNav').hasClass('activeSol')) {
    $('#serviceNav').removeClass('activeSol');
    $('#serviceNav').addClass('activeSol').slideDown();
} else  { 
    $('#serviceNav').removeClass('activeSol').slideUp(500);
}
另一答案

relative没有类'activeSol'并且永远不会拥有它，为了让它切换菜单的可见性，你应该添加和删除类，如下所示：

$('#serviceClick').click( function () {
  var relative = $(this);
  if (!relative.hasClass('opened')) { // if it's not opened
    relative.addClass('opened');   // open it
    $('#serviceNav').removeClass('activeSol');
    $('#serviceNav').addClass('activeSol').slideDown();
  } else  { // if it's opened
    relative.removeClass('opened');  // close it
    $('#serviceNav').removeClass('activeSol').slideUp(500);
  }
  return false;
});

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