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javascript - Bootstrap Sidebar 仅在单击两次后打开

转载 作者:行者123 更新时间:2023-11-28 13:54:39 27 4
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所以我刚刚制作了一个简单的汉堡包式侧边栏,但是当我点击汉堡包图标时我似乎无法让它工作,它会像它应该的那样变成 X 但是当我点击关闭时菜单只会短暂出现按钮是有原因的吗?有没有办法让关闭按钮实际位于带有 z-index 或其他东西的侧边栏中?

代码链接: https://www.codeply.com/p/R4UGFDIGuw

<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="https://stackpath.bootstrapcdn.com/bootstrap/4.3.1/css/bootstrap.min.css" integrity="sha384-ggOyR0iXCbMQv3Xipma34MD+dH/1fQ784/j6cY/iJTQUOhcWr7x9JvoRxT2MZw1T" crossorigin="anonymous">
<style>.sidenav {
height: 100%;
width: 0;
position: fixed;
z-index: 1;
top: 0;
left: 0;
background-color: #111;
overflow-x: hidden;
transition: 0.5s;
padding-top: 60px;
}

.sidenav a {
padding: 8px 8px 8px 16px;
text-decoration: none;
font-size: 25px;
color: #818181;
display: block;
transition: 0.3s;
}

.sidenav a:hover {
color: #f1f1f1;
}

.sidenav::-webkit-scrollbar {
display: none;
}


.animated-icon {
width: 30px;
height: 20px;
position: relative;
margin: 0px;
-webkit-transform: rotate(0deg);
-moz-transform: rotate(0deg);
-o-transform: rotate(0deg);
transform: rotate(0deg);
-webkit-transition: .5s ease-in-out;
-moz-transition: .5s ease-in-out;
-o-transition: .5s ease-in-out;
transition: .5s ease-in-out;
cursor: pointer;
}

.animated-icon span {
display: block;
position: absolute;
height: 3px;
width: 100%;
border-radius: 9px;
opacity: 1;
left: 0;
-webkit-transform: rotate(0deg);
-moz-transform: rotate(0deg);
-o-transform: rotate(0deg);
transform: rotate(0deg);
-webkit-transition: .25s ease-in-out;
-moz-transition: .25s ease-in-out;
-o-transition: .25s ease-in-out;
transition: .25s ease-in-out;
}

.animated-icon span {
background: #f3e5f5;
}

.animated-icon span:nth-child(1) {
top: 0px;
-webkit-transform-origin: left center;
-moz-transform-origin: left center;
-o-transform-origin: left center;
transform-origin: left center;
}

.animated-icon span:nth-child(2) {
top: 10px;
-webkit-transform-origin: left center;
-moz-transform-origin: left center;
-o-transform-origin: left center;
transform-origin: left center;
}

.animated-icon span:nth-child(3) {
top: 20px;
-webkit-transform-origin: left center;
-moz-transform-origin: left center;
-o-transform-origin: left center;
transform-origin: left center;
}

.animated-icon.open span:nth-child(1) {
-webkit-transform: rotate(45deg);
-moz-transform: rotate(45deg);
-o-transform: rotate(45deg);
transform: rotate(45deg);
top: 0px;
left: 8px;
}

.animated-icon.open span:nth-child(2) {
width: 0%;
opacity: 0;
}

.animated-icon.open span:nth-child(3) {
-webkit-transform: rotate(-45deg);
-moz-transform: rotate(-45deg);
-o-transform: rotate(-45deg);
transform: rotate(-45deg);
top: 21px;
left: 8px;
}</style>
<title>Index</title>
</head>
<body>


<!--Navbar-->
<nav class="navbar navbar-light bg-light">



<!-- Collapse button -->
<button class="navbar-toggler hamburger-button" type="button" data-toggle="collapse" data-target="#navbarSupportedContent22" aria-controls="navbarSupportedContent22" aria-expanded="false" aria-label="Toggle navigation" onclick="Nav()"><div class="animated-icon"><span></span><span></span><span></span></div></button>
<!-- Navbar brand -->
<a class="navbar-brand" style="padding-right: 50%" href="#">Navbar</a>
<!-- Collapsible content -->
<div class="collapse navbar-collapse" id="navbarSupportedContent22">

<!-- Links -->
<ul class="navbar-nav mr-auto sidenav" id="mySidenav">
<li class="nav-item active">
<a class="nav-link" href="#">Home <span class="sr-only">(current)</span></a>
</li>
<li class="nav-item">
<a class="nav-link" href="#">Features</a>
</li>
<li class="nav-item">
<a class="nav-link" href="#">Pricing</a>
</li>
</ul>
<!-- Links -->

</div>
<!-- Collapsible content -->

</nav>
<!--/.Navbar-->

<!--JavaScript at end of body for optimized loading-->
<script src="https://code.jquery.com/jquery-3.3.1.slim.min.js" integrity="sha384-q8i/X+965DzO0rT7abK41JStQIAqVgRVzpbzo5smXKp4YfRvH+8abtTE1Pi6jizo" crossorigin="anonymous"></script>
<script src="https://cdnjs.cloudflare.com/ajax/libs/popper.js/1.14.7/umd/popper.min.js" integrity="sha384-UO2eT0CpHqdSJQ6hJty5KVphtPhzWj9WO1clHTMGa3JDZwrnQq4sF86dIHNDz0W1" crossorigin="anonymous"></script>
<script src="https://stackpath.bootstrapcdn.com/bootstrap/4.3.1/js/bootstrap.min.js" integrity="sha384-JjSmVgyd0p3pXB1rRibZUAYoIIy6OrQ6VrjIEaFf/nJGzIxFDsf4x0xIM+B07jRM" crossorigin="anonymous"></script>
<script>function Nav() {
if (document.getElementById("mySidenav").style.width === "0px") {
document.getElementById("mySidenav").style.width = "250px";
$('.animated-icon').toggleClass('open');
}
else {
document.getElementById("mySidenav").style.width = "0px";
$('.animated-icon').toggleClass('open');
}
}</script>
</body>
</html>```

最佳答案

function Nav() {
var width = document.getElementById("mySidenav").style.width;
if (width === "0px" || width == "") {
document.getElementById("mySidenav").style.width = "250px";
$('.animated-icon').toggleClass('open');
}
else {
document.getElementById("mySidenav").style.width = "0px";
$('.animated-icon').toggleClass('open');
}
}

为什么
首先,document.getElementById("mySidenav").style.width 返回 ''

关于javascript - Bootstrap Sidebar 仅在单击两次后打开,我们在Stack Overflow上找到一个类似的问题: https://stackoverflow.com/questions/58902417/

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