任何人都可以帮助我解决我的代码中的一些问题吗？我是新手，遇到了一些问题。
我的初始代码存在一些问题。没有做我需要做的事。感谢您的帮助!
我需要这个来: 粉红色的菜单栏停止滚动并固定在固定标题的底部。号召性用语应在固定标题下向上滚动。目前它不会一直滚动到固定标题下的顶部，然后反弹到正确的位置。 它还涵盖了不应该隐藏在固定后保留在页面上的主要内容的顶部。应该有一些初始填充，例如当您在滚动之前登陆页面时。
* {margin: 0; padding: 0;}
a {text-decoration: none;}
/* This class is added on scroll */
.fixed {
position: fixed;
top: 182px;
height: 70px;
z-index: 1;
}
body {
color: #fff;
font-family: Gill Sans, Verdana;
font-size: 18px;
text-align: center;
}
header {
background: blue;
position: fixed;
color: black;
height: 182px;
position: fixed;
top: 0;
width: 100% ;
z-index: 1;
}
#action-call {
color: black;
height: 200px;
padding-top: 200px;
position: relative;
width: 100%;
}
/* Navigation Settings */
nav {
position: relative;
width: 100%;
height: 70px;
background: pink;
}
nav li {
display: inline-block;
padding: 24px 10px;
}
nav li a {
color: #757575;
text-transform: uppercase;
}
#main-content {
color: black;
height: auto;
padding-top: 18px;
position: relative;
width: 100%;
}
footer {
color: black;
height: 100px;
padding-top: 18px;
position: relative;
width: 100%;
}<html lang="en-US">
<head>
<!-- Meta tags & title /-->
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<meta name="viewport" content="width=device-width, initial-scale=1, maximum-scale=1">
<meta name="robots" content="all,index,follow" />
<title>Scroll To Top Then Fixed Navigation Effect With JQuery and CSS</title>
<meta name="description" content="Create a sticky navigation bar that remains fixed to the top after scroll" />
<link rel="stylesheet" type="text/css" href="css/style.css" /> <!-- Main stylesheet /-->
</head>
<body>
<header>
<h1>FIXED HEADER</h1>
A fixed header with my logo & stuff
</header>
<section id="action-call">
<h1>CALL TO ACTION</h1>
<p>This is a call to action and it will have some text, a big button and a huge image here!</p>
</section>
<script type="text/javascript" src="http://ajax.googleapis.com/ajax/libs/jquery/1.10.2/jquery.min.js"></script>
<script>
$(document).ready(function(){
$(window).bind('scroll', function() {
var navHeight = $( window ).height() - 70;
if ($(window).scrollTop() > navHeight) {
$('nav').addClass('fixed');
}
else {
$('nav').removeClass('fixed');
}
});
});
</script>
<nav>
<ul>
<li><a href="#">Home</a></li>
<li><a href="#">About</a></li>
<li><a href="#">Services</a></li>
<li><a href="#">Team</a></li>
<li><a href="#">Contact</a></li>
</ul>
</nav>
<section id="main-content">
<h1>MAIN CONTENT</h1>
<p>This is the main content section and there will be tons of text here and various posts and images etc.</p>
<p>This is the main content section and there will be tons of text here and various posts and images etc.</p>
<p>This is the main content section and there will be tons of text here and various posts and images etc.</p>
<p>This is the main content section and there will be tons of text here and various posts and images etc.</p>
<p>This is the main content section and there will be tons of text here and various posts and images etc.</p>
<p>This is the main content section and there will be tons of text here and various posts and images etc.</p>
<p>This is the main content section and there will be tons of text here and various posts and images etc.</p>
<p>This is the main content section and there will be tons of text here and various posts and images etc.</p>
<p>This is the main content section and there will be tons of text here and various posts and images etc.</p>
<p>This is the main content section and there will be tons of text here and various posts and images etc.</p>
<p>This is the main content section and there will be tons of text here and various posts and images etc.</p>
<p>This is the main content section and there will be tons of text here and various posts and images etc.</p>
<p>This is the main content section and there will be tons of text here and various posts and images etc.</p>
<p>This is the main content section and there will be tons of text here and various posts and images etc.</p>
<p>This is the main content section and there will be tons of text here and various posts and images etc.</p>
<p>This is the main content section and there will be tons of text here and various posts and images etc.</p>
<p>This is the main content section and there will be tons of text here and various posts and images etc.</p>
<p>This is the main content section and there will be tons of text here and various posts and images etc.</p>
<p>This is the main content section and there will be tons of text here and various posts and images etc.</p>
<p>This is the main content section and there will be tons of text here and various posts and images etc.</p>
<p>This is the main content section and there will be tons of text here and various posts and images etc.</p>
<p>This is the main content section and there will be tons of text here and various posts and images etc.</p>
<p>This is the main content section and there will be tons of text here and various posts and images etc.</p>
<p>This is the main content section and there will be tons of text here and various posts and images etc.</p>
<p>This is the main content section and there will be tons of text here and various posts and images etc.</p>
<p>This is the main content section and there will be tons of text here and various posts and images etc.</p>
<p>This is the main content section and there will be tons of text here and various posts and images etc.</p>
<p>This is the main content section and there will be tons of text here and various posts and images etc.</p>
<p>This is the main content section and there will be tons of text here and various posts and images etc.</p>
<p>This is the main content section and there will be tons of text here and various posts and images etc.</p>
<p>This is the main content section and there will be tons of text here and various posts and images etc.</p>
<p>This is the main content section and there will be tons of text here and various posts and images etc.</p>
<p>This is the main content section and there will be tons of text here and various posts and images etc.</p>
<p>This is the main content section and there will be tons of text here and various posts and images etc.</p>
<p>This is the main content section and there will be tons of text here and various posts and images etc.</p>
<p>This is the main content section and there will be tons of text here and various posts and images etc.</p>
</section>
<footer>
<h1>FOOTER</h1>
<p>This is the footer area and not much will be in here. Just somne copyright and credit stuff</p>
<p>This is the footer area and not much will be in here. Just somne copyright and credit stuff</p>
<p>This is the footer area and not much will be in here. Just somne copyright and credit stuff</p>
</footer>
</body>
</html>请在此处查看我遇到问题的代码: http://codepen.io/BasicBlue/pen/KaxYNG
最佳答案
在应用固定位置后，您需要添加一个 padding top。我建议你改变你的 nevHeight 计算:
var padding_apply = false;
var nav_init_pos = 0;
function set_nav_pos() {
nav_init_pos = $('#action-call').innerHeight() - $( 'header' ).innerHeight();
}
$(document).ready(function(){
set_nav_pos(); // initialize scroll triggering position
$(window).on('resize', function() {
set_nav_pos(); // re-initialize the position if your header block height change with the resize action
$(window).trigger('scroll'); // We force update the body padding with the scroll event callback.
});
$(window).on('scroll', function() {
if ($(window).scrollTop() > nav_init_pos) {
if(!padding_apply) {
$('nav').addClass('fixed');
$('body').css('padding-top', $('nav').innerHeight());
padding_apply = true;
}
}
else {
if(padding_apply) {
$('nav').removeClass('fixed');
$('body').css('padding-top', 0);
padding_apply = false;
}
}
});
});
我的解决方案的优点是，如果您调整窗口大小，填充会适应新的视口(viewport)大小。
希望我的回答适合你。
编辑:我添加了一个新东西来修复滚动触发位置并优化了过程。我也添加了调整大小事件回调。
关于javascript - 导航栏滚动然后保持固定在固定标题下。问题，我们在Stack Overflow上找到一个类似的问题： https://stackoverflow.com/questions/42120486/