0
我是前排新手,我從Udemy購買和跟隨課程。 也許問題是因爲教師用於引導阿爾法4版,我使用alpha 6我無法在滾動時將導航欄粘貼到頂部
我不能只建立postion:fixed
與頁面的頂部導航欄中,我的導航欄有970像素緣頂部,當我滾動希望nav從頂部和底部971px是970px,這是問題。 這裏是導航欄的圖片:
index.html文件:
<link rel="stylesheet" type="text/css" href="https://cdnjs.cloudflare.com/ajax/libs/tether/1.4.0/css/tether.min.css"> <link rel="stylesheet" type="text/css" href="css/font-awesome/css/font-awesome.min.css"> <link rel="stylesheet" href="https://maxcdn.bootstrapcdn.com/bootstrap/4.0.0-alpha.6/css/bootstrap.min.css" integrity="sha384-rwoIResjU2yc3z8GV/NPeZWAv56rSmLldC3R/AZzGRnGxQQKnKkoFVhFQhNUwEyJ" crossorigin="anonymous"> <link rel="stylesheet" type="text/css" href="css/style.css"> <title>First website</title> </head> <body> <section id="cover"> <div class="container"> <div class="row"> <div class="col-sm-3"> <div class="lead wall-sticker"> we. <br> plant. <br> trees. <br> <a href="#"> <button type="button" class="btn btn-success-outline my-2 my-sm-0 text-white">Learn more</button> </a> </div> </div> <div class="col-sm-9"> <h1 class="moto">For <span class="bold-green">every</span> item sold, we plant 1 tree.<br><br>Want to become a <span class="green-underline">part</span> of it?</h1> <a href="#"><i class="fa fa-arrow-down"></i></a> </div> </div> </div> </section> <nav class="navbar navbar-toggleable-md navbar-inverse bg-inverse" id="main-nav"> <script src="https://cdnjs.cloudflare.com/ajax/libs/tether/1.4.0/js/tether.min.js"></script> <script src="js/jquery-3.2.1.min.js"></script> <script src="https://maxcdn.bootstrapcdn.com/bootstrap/4.0.0-alpha.6/js/bootstrap.min.js" integrity="sha384-vBWWzlZJ8ea9aCX4pEW3rVHjgjt7zpkNpZk+02D9phzyeVkE+jo0ieGizqPLForn" crossorigin="anonymous"></script> <script src="js/main.js"></script>
我main.js文件,主要有:
$(document).ready(function() { $(window).scroll(function() { if ($(window).scrollTop() > 970) { $('.navbar').addClass('navbar-fixed-top'); } if ($(window).scrollTop() < 971) { $('.navbar').removeClass('navbar-fixed-top'); } }) });
我想,現在,沒有幫助,謝謝你盡力幫助。 –