如何滾動固定的雙導航欄？
[英]How to scroll a fixed double navbar?
問題描述
所以我有兩個固定的響應式導航欄。 這是我的代碼：
function myFunction() { var x = document.getElementById("myTopnav"); if (x.className === "topnav") { x.className += " responsive"; } else { x.className = "topnav"; } }
body { margin: 0; font-family: Arial, Helvetica, sans-serif; } .outer { position: fixed; top: 0px; widtH: 100%; } .topnav { overflow: hidden; background-color: #333; } .topnav a { float: left; display: block; color: #f2f2f2; text-align: center; padding: 14px 16px; text-decoration: none; font-size: 17px; } .topnav a:hover { background-color: #ddd; color: black; } .active { background-color: #4CAF50; color: white; } .topnav .icon { display: none; } @media screen and (max-width: 600px) { .topnav a:not(:first-child) {display: none;} .topnav a.icon { float: right; display: block; } } @media screen and (max-width: 600px) { .topnav.responsive {position: relative;} .topnav.responsive .icon { position: absolute; right: 0; top: 0; } .topnav.responsive a { float: none; display: block; text-align: left; } } .secondnav { background:red; width:100%; height:42px; }
<html> <head> <meta name="viewport" content="width=device-width, initial-scale=1"> <link rel="stylesheet" href="https://cdnjs.cloudflare.com/ajax/libs/font-awesome/4.7.0/css/font-awesome.min.css"> </head> <body> <div class="outer"> <div class="topnav" id="myTopnav"> <a href="#home" class="active">Home</a> <a href="#news">News</a> <a href="#contact">Contact</a> <a href="#about">About</a> <a href="#help">Help</a> <a href="#terms">Terms</a> <a href="#privacy">Privacy</a> <a href="#cookies">Cookies</a> <a href="#activitylog">Activity Log</a> <a href="#events">Events</a> <a href="#settings">Settings</a> <a href="#notifications">Notifications</a> <a href="#friendrequest">Friend Requests</a> <a href="javascript:void(0);" class="icon" onclick="myFunction()"> <i class="fa fa-bars"></i> </a> </div> <div class="secondnav"> </div> </div> </body> </html>
問題是，當調整窗口大小並且導航欄變得響應並且我單擊菜單按鈕時，由於導航欄中有很多項目，因此我無法滾動瀏覽菜單。 如何解決這個問題？ 請不要建議其他方法。 請嘗試使用此代碼。
並預先感謝！
1 個解決方案
解決方案1
0 已采納 2019-01-10 17:18:05
您可以添加以下CSS：
@media screen and (max-width: 600px) {
.topnav.responsive {
position: relative;
max-height: 75vh; /* Set to the hegith you want to use */
overflow-y: scroll; /* Enable scroll */
}
如果您不想顯示滾動條，只需添加：
.topnav.responsive::-webkit-scrollbar {
width: 0px; /* remove scrollbar space */
background: transparent; /* optional: just make scrollbar invisible */
}
function myFunction() { var x = document.getElementById("myTopnav"); if (x.className === "topnav") { x.className += " responsive"; } else { x.className = "topnav"; } }
body { margin: 0; font-family: Arial, Helvetica, sans-serif; } .outer { position: fixed; top: 0px; widtH: 100%; } .topnav { overflow: hidden; background-color: #333; } .topnav a { float: left; display: block; color: #f2f2f2; text-align: center; padding: 14px 16px; text-decoration: none; font-size: 17px; } .topnav a:hover { background-color: #ddd; color: black; } .active { background-color: #4CAF50; color: white; } .topnav .icon { display: none; } @media screen and (max-width: 600px) { .topnav a:not(:first-child) {display: none;} .topnav a.icon { float: right; display: block; } } @media screen and (max-width: 600px) { .topnav.responsive { position: relative; max-height: 75vh; /* Set to the hegith you want to use */ overflow-y: scroll; /* Enable scroll */ } .topnav.responsive .icon { position: absolute; right: 0; top: 0; } .topnav.responsive a { float: none; display: block; text-align: left; } } .secondnav { background:red; width:100%; height:42px; }
<html> <head> <meta name="viewport" content="width=device-width, initial-scale=1"> <link rel="stylesheet" href="https://cdnjs.cloudflare.com/ajax/libs/font-awesome/4.7.0/css/font-awesome.min.css"> </head> <body> <div class="outer"> <div class="topnav" id="myTopnav"> <a href="#home" class="active">Home</a> <a href="#news">News</a> <a href="#contact">Contact</a> <a href="#about">About</a> <a href="#help">Help</a> <a href="#terms">Terms</a> <a href="#privacy">Privacy</a> <a href="#cookies">Cookies</a> <a href="#activitylog">Activity Log</a> <a href="#events">Events</a> <a href="#settings">Settings</a> <a href="#notifications">Notifications</a> <a href="#friendrequest">Friend Requests</a> <a href="javascript:void(0);" class="icon" onclick="myFunction()"> <i class="fa fa-bars"></i> </a> </div> <div class="secondnav"> </div> </div> </body> </html>
如何在 jquery & bootstrap 5 中的主要固定頂部導航欄下的特定部分的滾動上添加第二個粘性導航欄？
[英]How to add a second sticky navbar on scroll of a particular section, under the primary fixed-top navbar, in jquery & bootstrap 5?
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