我试了很多次，但还是不行。
向下滚动时，#custom-nav 背景变为黑色，不透明度降低。我不知道我错过了什么，或者有什么问题，有人可以帮助我吗？
样式.CSS
/*
--------------
--------NAVBAR
--------------
*/
#custom-nav {
background-color:transparent;
border: 0;
box-shadow: none;
z-index: 9999999;
width:100%;
-webkit-font-smoothing: antialiased;
-moz-osx-font-smoothing: grayscale;
-webkit-transition: background .5s ease-in-out, opacity .5s ease;
-moz-transition: background .5s ease-in-out, opacity .5s ease;
transition: background .5s ease-in-out, opacity .5s ease;
}
.bchange {
background-color:black;
opacity:0.9;
}
#custom-nav h1 {
float:left;
margin-top:-1%;
margin-left:2%;
}
#custom-nav h1 a {
color: #fff;
font-size: 0.2em;
text-decoration: none;
transition: all 0.2s linear;
font-family: 'Lato';
font-style: ultra-bold;
font-weight: 700;
text-transform: uppercase;
letter-spacing: 7px;
}
#custom-nav h1 a:hover{
text-decoration: none;
color:#FFF;
}
#custom-nav ul {
margin:0;
margin-top:1.5%;
margin-left:50%;
}
#custom-nav li {
padding: 0 0 0 0px;
list-style: none;
display: inline;
background: transparent;
text-align: center;
float:left;
position:relative;
}
#custom-nav li:after {
content: "";
}
#custom-nav li a {
float: left;
font-size: 0.9em;
font-weight: 100;
font-style: normal;
line-height: 26px;
font-family: Oswald;
text-transform:uppercase;
letter-spacing:2px;
padding: 6px 20px 0 20px;
background: transparent;
border-radius: 7px 7px 7px 7px;
-moz-border-radius: 7px 7px 7px 7px;
-webkit-border: 7px 7px 7px 7px;
text-align: center;
color: #FFF;
text-decoration: none;
}
#custom-nav li ul {
list-style-type: circle;
}
#custom-nav li ul li a
{ background: transparent;
font-size: 0.8em;
font-weight: 100;
font-style: normal;
line-height: 26px;
font-family: Oswald;
text-transform:uppercase; }
#custom-nav >li:hover > a
{ color: #1D1D1D;
background: #FFF;
background: -moz-linear-gradient(#fff, #ccc);
background: -o-linear-gradient(#fff, #ccc);
background: -webkit-linear-gradient(#fff, #ccc);
text-shadow: none;
left: 0;}
#custom-nav li ul li
{ background: transparent;
width: 100%;}
#custom-nav li:hover ul
{ display: block;
overflow: hidden;
}
#custom-nav li ul
{ position: absolute;
z-index: 1;
top:100%;
left: 0;
height: auto;
width: 250px;
padding-bottom: 15px;
display:none;
margin:0px;
}<!DOCTYPE html>
<!--[if lt IE 7 ]><html class="ie ie6" <?php language_attributes();?>> <![endif]-->
<!--[if IE 7 ]><html class="ie ie7" <?php language_attributes();?>> <![endif]-->
<!--[if IE 8 ]><html class="ie ie8" <?php language_attributes();?>> <![endif]-->
<!--[if IE 9 ]><html class="ie ie9" <?php language_attributes();?>> <![endif]-->
<!--[if (gt IE 9)|!(IE)]><!--><html <?php language_attributes();?>> <!--<![endif]-->
<head>
<meta charset="<?php bloginfo( 'charset' ); ?>" />
<meta http-equiv="X-UA-Compatible" content="IE=edge">
<meta name="viewport" content="width=device-width, initial-scale=1">
<link rel="profile" href="http://gmpg.org/xfn/11" />
<?php if ( ! function_exists( 'has_site_icon' ) || ! has_site_icon() ) { ?>
<?php if(of_get_option('favicon') != ''){ ?>
<link rel="icon" href="<?php echo of_get_option('favicon', "" ); ?>" type="image/x-icon" />
<?php } } ?>
<link rel="pingback" href="<?php bloginfo( 'pingback_url' ); ?>" />
<link rel="alternate" type="application/rss+xml" title="<?php bloginfo( 'name' ); ?>" href="<?php bloginfo( 'rss2_url' ); ?>" />
<link rel="alternate" type="application/atom+xml" title="<?php bloginfo( 'name' ); ?>" href="<?php bloginfo( 'atom_url' ); ?>" />
<!-- Javascript -->
<script src="http://ajax.googleapis.com/ajax/libs/jquery/1.8.3/jquery.min.js"></script>
<script src="http://ajax.googleapis.com/ajax/libs/jqueryui/1.9.1/jquery-ui.min.js"></script>
<script type='text/javascript'>
(function() {
if ("-ms-user-select" in document.documentElement.style && navigator.userAgent.match(/IEMobile\/10\.0/)) {
var msViewportStyle = document.createElement("style");
msViewportStyle.appendChild(
document.createTextNode("@-ms-viewport{width:auto!important}")
);
document.getElementsByTagName("head")[0].appendChild(msViewportStyle);
}
})();
</script>
<script type='text/javascript'>
jQuery(document).ready(function($) {
$(window).scroll(function() {
var scrollPos = $(window).scrollTop(),
navbar = $('#custom-nav');
if (scrollPos > 20) {
navbar.addClass('bchange');
} else {
navbar.removeClass('bchange');
}
});
});
</script>
<?php
if(
of_get_option('custom_font_family_name') &&
of_get_option('custom_font_woff') &&
of_get_option('custom_font_ttf') &&
of_get_option('custom_font_svg') &&
of_get_option('custom_font_eot')
):
?>
<style type="text/css">
@font-face {
font-family: '<?php echo of_get_option("custom_font_family_name");?>';
src: url('<?php echo of_get_option("custom_font_eot");?>');
src: url('<?php echo of_get_option("custom_font_eot");?>?#iefix') format('embedded-opentype'),
url('<?php echo of_get_option("custom_font_woff");?>') format('woff'),
url('<?php echo of_get_option("custom_font_ttf");?>') format('truetype'),
url('<?php echo of_get_option("custom_font_svg");?>#<?php echo of_get_option("custom_font_family_name");?>') format('svg');
font-weight: normal;
font-style: normal;
}
</style>
<?php endif; ?>
<?php
wp_head();
?>
<!--[if IE 8 ]>
<link rel="stylesheet" id="stylesheet-ie8" type="text/css" href="<?php echo get_stylesheet_directory_uri(); ?>/ie8.css" />
<script src="<?php echo get_stylesheet_directory_uri(); ?>/js/respond.js"></script>
<![endif]-->
</head>
<body <?php body_class(); ?>>
<div id="custom-nav" class="navbar navbar-default navbar-fixed-top">
<h1><a href="<?php echo get_settings('home'); ?>">Independent Genteleman</a></h1>
<?php wp_nav_menu(array('theme_location' => 'footer',)); ?>
</div>
</header>最佳答案
<script type='text/javascript'>
jQuery(document).ready(function($) {
$(window).scroll(function() {
var scrollPos = $(window).scrollTop(),
navbar = $('#custom-nav');
if (scrollPos > 20) {
navbar.addClass('bchange');
} else {
navbar.removeClass('bchange');
}
});
});
</script>
您的这部分代码会导致您的导航栏在滚动时改变颜色，如果您不希望这种效果只删除此代码。
它的作用是:检查当前滚动位置并为您的菜单添加一个类 .bchange #custom-nav
关于jquery - 滚动时 WordPress 导航栏背景更改，我们在Stack Overflow上找到一个类似的问题： https://stackoverflow.com/questions/36680970/