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[英]Trying to change active tab color, don't know what I am doing wrong in my code
[英]I don't know what i am doing wrong, I want to change the background color of the navbar when the page gets scrolled
這就是我正在做的,我使用引導程序來設計這個導航。 導航基本上折疊並出現一個切換按鈕。
<nav id="mainNavbar" class="navbar navbar-expand-lg navbar-dark py-0 fixed-top ">
<div class="container-fluid">
<a class="navbar-brand" href="#">CANDY</a>
<button class="navbar-toggler" type="button" data-bs-toggle="collapse" data-bs-target="#navbarTogglerDemo01"
aria-controls="navbarTogglerDemo01" aria-expanded="false" aria-label="Toggle navigation"
class="btn btn-info">
<span class="navbar-toggler-icon"></span>
</button>
<div class="collapse navbar-collapse" id="navbarTogglerDemo01">
<ul class="navbar-nav ">
<li class="nav-item">
<a class="nav-link" href="#">HOME</a>
</li>
<li class="nav-item">
<a class="nav-link" href="#">ABOUT</a>
</li>
<li class="nav-item">
<a class="nav-link" href="#">TICKETS</a>
</li>
</ul>
</div>
</nav>
這是滾動時設置樣式的 css。 沒有其他東西用來設計它
#mainNavbar.scrolled{
background-color: #ac3bac;
transition: background 500ms;
}
但問題是它並沒有切換“滾動”類來設置它的樣式。 我嘗試了多種方法,但都沒有奏效。 如果可能,請幫我完成它
<script>enter code here
$(function () {
$(document).scroll(function () {
var $nav = $("#mainNavbar");
$nav.toggleClass("scrolled", $(this).scrollTop() > $nav.height());
});
});
</script>
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