如何解决动画侧面导航菜单:如何避免布局跳转?
我想创建动画side navigation menu。
问题在于打开和关闭项目“跳转”(仅在包含多个单词的菜单项上)。我该如何预防?
看起来真的很丑。我希望菜单不出现布局跳动。
示例
以下代码来自w3schools。只是出于说明目的。
body {
font-family: "Lato",sans-serif;
}
.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 32px;
text-decoration: none;
font-size: 25px;
color: #818181;
display: block;
transition: 0.3s;
}
.sidenav a:hover {
color: #f1f1f1;
}
.sidenav .closebtn {
position: absolute;
top: 0;
right: 25px;
font-size: 36px;
margin-left: 50px;
}
@media screen and (max-height: 450px) {
.sidenav {padding-top: 15px;}
.sidenav a {font-size: 18px;}
}
<!DOCTYPE html>
<html>
<head>
<meta name="viewport" content="width=device-width,initial-scale=1">
</head>
<body>
<div id="mySidenav" class="sidenav">
<a href="javascript:void(0)" class="closebtn" onclick="closeNav()">×</a>
<a href="#">About Me</a>
<a href="#">My Services</a>
<a href="#">Best Clients</a>
<a href="#">Contact</a>
</div>
<h2>Animated Sidenav Example</h2>
<p>Click on the element below to open the side navigation menu.</p>
<span style="font-size:30px;cursor:pointer" onclick="openNav()">☰ open</span>
<script>
function openNav() {
document.getElementById("mySidenav").style.width = "250px";
}
function closeNav() {
document.getElementById("mySidenav").style.width = "0";
}
</script>
</body>
</html>
解决方法
要执行此操作,请先释放宽度,然后将其从页面上推下,然后再拉回去,而不是使用宽度。因此,动画将看起来流畅而专业。
相关CSS属性:
transform: translateX (...)
您可以测试我的代码段中的更改。我在摘要中指定了更改点。祝你好运。
body {
font-family: "Lato",sans-serif;
}
.sidenav {
height: 100%;
/* Changed */ width: 250px;
position: fixed;
z-index: 1;
top: 0;
left: 0;
background-color: #111;
overflow-x: hidden;
transition: 0.5s;
padding-top: 60px;
/* Added */ transform: translateX(-100%);
}
.sidenav a {
padding: 8px 8px 8px 32px;
text-decoration: none;
font-size: 25px;
color: #818181;
display: block;
transition: 0.3s;
}
.sidenav a:hover {
color: #f1f1f1;
}
.sidenav .closebtn {
position: absolute;
top: 0;
right: 25px;
font-size: 36px;
margin-left: 50px;
}
@media screen and (max-height: 450px) {
.sidenav {padding-top: 15px;}
.sidenav a {font-size: 18px;}
}
<!DOCTYPE html>
<html>
<head>
<meta name="viewport" content="width=device-width,initial-scale=1">
</head>
<body>
<div id="mySidenav" class="sidenav">
<a href="javascript:void(0)" class="closebtn" onclick="closeNav()">×</a>
<a href="#">About Me</a>
<a href="#">My Services</a>
<a href="#">Best Clients</a>
<a href="#">Contact</a>
</div>
<h2>Animated Sidenav Example</h2>
<p>Click on the element below to open the side navigation menu.</p>
<span style="font-size:30px;cursor:pointer" onclick="openNav()">☰ open</span>
<script>
function openNav() {
document.getElementById("mySidenav").style = "transform: translateX(0)"; // Changed
}
function closeNav() {
document.getElementById("mySidenav").style = ""; // Changed
}
</script>
</body>
</html>
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