我在index.html上有一个侧边栏，在右侧我想要我的内容。在身体的末尾，你将看到jquery代码，我在其中切换侧边栏的活动类并更改隐藏和显示之间的按钮文本。这很好用。然后我添加了媒体查询，当用户最小化页面侧边栏将再次消失时，但在这种情况下按钮的文本也必须改变，这部分不能正常工作，你知道我怎么能实现它吗？
HTML
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<meta http-equiv="X-UA-Compatible" content="ie=edge">
<link rel="stylesheet" href="style.css">
<link href="https://fonts.googleapis.com/css?family=Open+Sans" rel="stylesheet">
<link rel="stylesheet" href="https://stackpath.bootstrapcdn.com/bootstrap/4.3.1/css/bootstrap.min.css"
integrity="sha384-ggOyR0iXCbMQv3Xipma34MD+dH/1fQ784/j6cY/iJTQUOhcWr7x9JvoRxT2MZw1T" crossorigin="anonymous">
<link rel="stylesheet" href="https://use.fontawesome.com/releases/v5.8.1/css/all.css"
integrity="sha384-50oBUHEmvpQ+1lW4y57PTFmhCaXp0ML5d60M1M7uH2+nqUivzIebhndOJK28anvf" crossorigin="anonymous">
<title>Sidebar Navigation</title>
</head>
<body>
<body data-gr-c-s-loaded="true" cz-shortcut-listen="true">
<div class="wrapper">
<!-- Sidebar -->
<nav id="sidebar">
<div class="sidebar-header text-center">
<h3 class="display-4">Title</h3>
</div>
<div class="container p-3">
</div>
</nav>
<!-- Page Content -->
<div id="content" class="w-100 px-5 py-2">
<div class="row p-3 d-flex justify-content-between">
<button type="button" id="sidebarCollapse" class="btn btn-outline-secondary">Hide Showbar</button>
</div>
</div>
</div>
<!-- jQuery CDN - Slim version (=without AJAX) -->
<script src="https://code.jquery.com/jquery-3.3.1.slim.min.js"
integrity="sha384-q8i/X+965DzO0rT7abK41JStQIAqVgRVzpbzo5smXKp4YfRvH+8abtTE1Pi6jizo"
crossorigin="anonymous"></script>
<!-- Popper.JS -->
<script src="https://cdnjs.cloudflare.com/ajax/libs/popper.js/1.14.0/umd/popper.min.js"
integrity="sha384-cs/chFZiN24E4KMATLdqdvsezGxaGsi4hLGOzlXwp5UZB1LY//20VyM2taTB4QvJ"
crossorigin="anonymous"></script>
<!-- Bootstrap JS -->
<script src="https://stackpath.bootstrapcdn.com/bootstrap/4.1.0/js/bootstrap.min.js"
integrity="sha384-uefMccjFJAIv6A+rW+L4AHf99KvxDjWSu1z9VI8SKNVmz4sk7buKt/6v9KI65qnm"
crossorigin="anonymous"></script>
<script type="text/javascript">
$(document).ready(function () {
$('#sidebarCollapse').on('click', function () {
$('#sidebar').toggleClass('active');
$(this).text($(this).text() == "Show Sidebar" ? "Hide Sidebar" : "Show Sidebar");
});
if ($('#sidebar').css('margin-left') == '-320px') {
console.log('IT is');
$(this).text($(this).text() == "Show Sidebar" ? "Hide Sidebar" : "Show Sidebar");
}
});
</script>
</body>
</html>
CSS
body {
font-family: "Open Sans", sans-serif;
background: #fafafa;
padding: 0;
margin: 0;
}
/* ---------------------------------------------------
SIDEBAR STYLE
----------------------------------------------------- */
.wrapper {
display: -webkit-box;
display: -ms-flexbox;
display: flex;
width: 100%;
-webkit-box-align: stretch;
-ms-flex-align: stretch;
align-items: stretch;
}
#sidebar {
min-width: 320px;
max-width: 320px;
min-height: 100vh;
background: #173f5f;
color: #fff;
-webkit-transition: all 0.3s;
transition: all 0.3s;
}
#sidebar .sidebar-header {
padding: 15px 10px;
background: #12314a;
}
#sidebar.active {
margin-left: -320px;
}
.btn {
font-weight: 500 !important;
}
.card-body {
color: #363636;
}
/* ---------------------------------------------------
MEDIAQUERIES
----------------------------------------------------- */
@media (max-width: 768px) {
#sidebar {
margin-left: -320px;
}
#sidebar.active {
margin-left: 0;
}
#sidebarCollapse span {
display: none;
}
.container {
margin-top: 0px !important;
}
}
/*# sourceMappingURL=style.css.map */
在这里jsfiddle demo https://jsfiddle.net/c17g9ax5/
只需编辑你css删除span #sidebarCollapse {
display: none;
}