您可以使用Bootstrap導(dǎo)航欄組件為您的網(wǎng)站或應(yīng)用程序創(chuàng)建響應(yīng)式導(dǎo)航標(biāo)題。這些響應(yīng)式導(dǎo)航欄最初在具有小視口的設(shè)備（如手機(jī)）上折疊，但在用戶單擊切換按鈕時(shí)會展開。但是，在筆記本電腦或臺式機(jī)等中型和大型設(shè)備上，它將像往常一樣是水平的。
導(dǎo)航欄一般放在頁面的頂部。
我們可以使用 .navbar 類來創(chuàng)建一個(gè)標(biāo)準(zhǔn)的導(dǎo)航欄，后面緊跟: .navbar-expand-xl|lg|md|sm 類來創(chuàng)建響應(yīng)式的導(dǎo)航欄 (大屏幕水平鋪開，小屏幕垂直堆疊)。
導(dǎo)航欄上的選項(xiàng)可以使用 <ul> 元素并添加 類。 然后在 <li> 元素上添加 .nav-item 類， <a> 元素上使用 .nav-link 類:
<!DOCTYPE html> <html> <head> <title>Bootstrap 示例</title> <meta charset="utf-8"> <meta name="viewport" content="width=device-width, initial-scale=1"> <link rel="stylesheet" href="https://cdn.staticfile.org/twitter-bootstrap/4.3.1/css/bootstrap.min.css"> <script src="https://cdn.staticfile.org/jquery/3.2.1/jquery.min.js"></script> <script src="https://cdn.staticfile.org/popper.js/1.15.0/umd/popper.min.js"></script> <script src="https://cdn.staticfile.org/twitter-bootstrap/4.3.1/js/bootstrap.min.js"></script> </head> <body> <nav class="navbar navbar-expand-sm bg-light"> <ul class="navbar-nav"> <li class="nav-item"> <a class="nav-link" href="#">Link 1</a> </li> <li class="nav-item"> <a class="nav-link" href="#">Link 2</a> </li> <li class="nav-item"> <a class="nav-link" href="#">Link 3</a> </li> </ul> </nav> <br> <div class="container-fluid"> <h2>簡單的導(dǎo)航欄示例</h2> <p>導(dǎo)航欄一般放在頁面的頂部。</p> <p>我們可以使用 .navbar 類來創(chuàng)建一個(gè)標(biāo)準(zhǔn)的導(dǎo)航欄，后面緊跟: .navbar-expand-xl|lg|md|sm 類來創(chuàng)建響應(yīng)式的導(dǎo)航欄 (大屏幕水平鋪開，小屏幕垂直堆疊)。</p> </div> </body> </html>測試看看 ?/?
通過刪除 .navbar-expand-xl|lg|md|sm 類來創(chuàng)建垂直導(dǎo)航欄:
<!DOCTYPE html> <html> <head> <title>Bootstrap 示例</title> <meta charset="utf-8"> <meta name="viewport" content="width=device-width, initial-scale=1"> <link rel="stylesheet" href="https://cdn.staticfile.org/twitter-bootstrap/4.3.1/css/bootstrap.min.css"> <script src="https://cdn.staticfile.org/jquery/3.2.1/jquery.min.js"></script> <script src="https://cdn.staticfile.org/popper.js/1.15.0/umd/popper.min.js"></script> <script src="https://cdn.staticfile.org/twitter-bootstrap/4.3.1/js/bootstrap.min.js"></script> </head> <body> <nav class="navbar bg-light"> <ul class="navbar-nav"> <li class="nav-item"> <a class="nav-link" href="#">Link 1</a> </li> <li class="nav-item"> <a class="nav-link" href="#">Link 2</a> </li> <li class="nav-item"> <a class="nav-link" href="#">Link 3</a> </li> </ul> </nav> <br> <div class="container-fluid"> <h2>垂直導(dǎo)航欄</h2> <p>導(dǎo)航欄一般在頁面頭部。</p> </div> </body> </html>測試看看 ?/?
可以使用以下類來創(chuàng)建不同顏色導(dǎo)航欄：.bg-primary, .bg-success, .bg-info, .bg-warning, .bg-danger, .bg-secondary, .bg-dark 和 .bg-light)。
提示: 對于暗色背景需要設(shè)置文本顏色為淺色的，對于淺色背景需要設(shè)置文本顏色為深色的。
<!DOCTYPE html> <html> <head> <title>Bootstrap 示例</title> <meta charset="utf-8"> <meta name="viewport" content="width=device-width, initial-scale=1"> <link rel="stylesheet" href="https://cdn.staticfile.org/twitter-bootstrap/4.3.1/css/bootstrap.min.css"> <script src="https://cdn.staticfile.org/jquery/3.2.1/jquery.min.js"></script> <script src="https://cdn.staticfile.org/popper.js/1.15.0/umd/popper.min.js"></script> <script src="https://cdn.staticfile.org/twitter-bootstrap/4.3.1/js/bootstrap.min.js"></script> </head> <body> <div class="container"> <h2>不同顏色導(dǎo)航欄</h2> <p>對于暗色背景需要設(shè)置文本顏色為淺色的，對于淺色背景需要設(shè)置文本顏色為深色的。</p> </div> <nav class="navbar navbar-expand-sm bg-light navbar-light"> <ul class="navbar-nav"> <li class="nav-item active"> <a class="nav-link" href="#">Active</a> </li> <li class="nav-item"> <a class="nav-link" href="#">Link</a> </li> <li class="nav-item"> <a class="nav-link" href="#">Link</a> </li> <li class="nav-item"> <a class="nav-link disabled" href="#">Disabled</a> </li> </ul> </nav> <nav class="navbar navbar-expand-sm bg-dark navbar-dark"> <ul class="navbar-nav"> <li class="nav-item active"> <a class="nav-link" href="#">Active</a> </li> <li class="nav-item"> <a class="nav-link" href="#">Link</a> </li> <li class="nav-item"> <a class="nav-link" href="#">Link</a> </li> <li class="nav-item"> <a class="nav-link disabled" href="#">Disabled</a> </li> </ul> </nav> <nav class="navbar navbar-expand-sm bg-primary navbar-dark"> <ul class="navbar-nav"> <li class="nav-item active"> <a class="nav-link" href="#">Active</a> </li> <li class="nav-item"> <a class="nav-link" href="#">Link</a> </li> <li class="nav-item"> <a class="nav-link" href="#">Link</a> </li> <li class="nav-item"> <a class="nav-link disabled" href="#">Disabled</a> </li> </ul> </nav> <nav class="navbar navbar-expand-sm bg-success navbar-dark"> <ul class="navbar-nav"> <li class="nav-item active"> <a class="nav-link" href="#">Active</a> </li> <li class="nav-item"> <a class="nav-link" href="#">Link</a> </li> <li class="nav-item"> <a class="nav-link" href="#">Link</a> </li> <li class="nav-item"> <a class="nav-link disabled" href="#">Disabled</a> </li> </ul> </nav> <nav class="navbar navbar-expand-sm bg-info navbar-dark"> <ul class="navbar-nav"> <li class="nav-item active"> <a class="nav-link" href="#">Active</a> </li> <li class="nav-item"> <a class="nav-link" href="#">Link</a> </li> <li class="nav-item"> <a class="nav-link" href="#">Link</a> </li> <li class="nav-item"> <a class="nav-link disabled" href="#">Disabled</a> </li> </ul> </nav> <nav class="navbar navbar-expand-sm bg-warning navbar-dark"> <ul class="navbar-nav"> <li class="nav-item active"> <a class="nav-link" href="#">Active</a> </li> <li class="nav-item"> <a class="nav-link" href="#">Link</a> </li> <li class="nav-item"> <a class="nav-link" href="#">Link</a> </li> <li class="nav-item"> <a class="nav-link disabled" href="#">Disabled</a> </li> </ul> </nav> <nav class="navbar navbar-expand-sm bg-danger navbar-dark"> <ul class="navbar-nav"> <li class="nav-item active"> <a class="nav-link" href="#">Active</a> </li> <li class="nav-item"> <a class="nav-link" href="#">Link</a> </li> <li class="nav-item"> <a class="nav-link" href="#">Link</a> </li> <li class="nav-item"> <a class="nav-link disabled" href="#">Disabled</a> </li> </ul> </nav> <nav class="navbar navbar-expand-sm bg-secondary navbar-dark"> <ul class="navbar-nav"> <li class="nav-item active"> <a class="nav-link" href="#">Active</a> </li> <li class="nav-item"> <a class="nav-link" href="#">Link</a> </li> <li class="nav-item"> <a class="nav-link" href="#">Link</a> </li> <li class="nav-item"> <a class="nav-link disabled" href="#">Disabled</a> </li> </ul> </nav> </body> </html>測試看看 ?/?
激活和禁用狀態(tài): 可以在 <a> 元素上添加 .active 類來高亮顯示選中的選項(xiàng)。 .disabled 類用于設(shè)置該鏈接是不可點(diǎn)擊的。
.navbar-brand 類用于高亮顯示品牌/Logo:
<!DOCTYPE html> <html> <head> <title>Bootstrap 示例</title> <meta charset="utf-8"> <meta name="viewport" content="width=device-width, initial-scale=1"> <link rel="stylesheet" href="https://cdn.staticfile.org/twitter-bootstrap/4.3.1/css/bootstrap.min.css"> <script src="https://cdn.staticfile.org/jquery/3.2.1/jquery.min.js"></script> <script src="https://cdn.staticfile.org/popper.js/1.15.0/umd/popper.min.js"></script> <script src="https://cdn.staticfile.org/twitter-bootstrap/4.3.1/js/bootstrap.min.js"></script> </head> <body> <nav class="navbar navbar-expand-sm bg-dark navbar-dark"> <!-- Brand/logo --> <a class="navbar-brand" href="#">Logo</a> <!-- Links --> <ul class="navbar-nav"> <li class="nav-item"> <a class="nav-link" href="#">Link 1</a> </li> <li class="nav-item"> <a class="nav-link" href="#">Link 2</a> </li> <li class="nav-item"> <a class="nav-link" href="#">Link 3</a> </li> </ul> </nav> <div class="container-fluid"> <h2>品牌/Logo</h2> <p>.navbar-brand 類用于高亮顯示品牌/Logo:</p> </div> </body> </html>測試看看 ?/?
如果使用圖片，可以使用 .navbar-brand 類來設(shè)置圖片自適應(yīng)導(dǎo)航欄。
<!DOCTYPE html> <html> <head> <title>Bootstrap 示例</title> <meta charset="utf-8"> <meta name="viewport" content="width=device-width, initial-scale=1"> <link rel="stylesheet" href="https://cdn.staticfile.org/twitter-bootstrap/4.3.1/css/bootstrap.min.css"> <script src="https://cdn.staticfile.org/jquery/3.2.1/jquery.min.js"></script> <script src="https://cdn.staticfile.org/popper.js/1.15.0/umd/popper.min.js"></script> <script src="https://cdn.staticfile.org/twitter-bootstrap/4.3.1/js/bootstrap.min.js"></script> </head> <body> <nav class="navbar navbar-expand-sm bg-dark navbar-dark"> <!-- Brand/logo --> <a class="navbar-brand" href="#"> <img src="https://static.(cainiaoplus.com)/images/mix/bird.jpg" alt="logo" style="width:40px;"> </a> <!-- Links --> <ul class="navbar-nav"> <li class="nav-item"> <a class="nav-link" href="#">Link 1</a> </li> <li class="nav-item"> <a class="nav-link" href="#">Link 2</a> </li> <li class="nav-item"> <a class="nav-link" href="#">Link 3</a> </li> </ul> </nav> <div class="container-fluid"> <h2>品牌 / Logo</h2> <p>果使用圖片，可以使用 .navbar-brand 類來設(shè)置圖片自適應(yīng)導(dǎo)航欄。</p> </div> </body> </html>測試看看 ?/?
通常，小屏幕上我們都會折疊導(dǎo)航欄，通過點(diǎn)擊來顯示導(dǎo)航選項(xiàng)。
要創(chuàng)建折疊導(dǎo)航欄，可以在按鈕上添加, data-toggle="collapse" 與 data-target="#thetarget" 類。然后在設(shè)置了 類的 div 上包裹導(dǎo)航內(nèi)容（鏈接）, div 元素上的 id 匹配按鈕 data-target 的上指定的 id:
<!DOCTYPE html> <html> <head> <title>Bootstrap 示例</title> <meta charset="utf-8"> <meta name="viewport" content="width=device-width, initial-scale=1"> <link rel="stylesheet" href="https://cdn.staticfile.org/twitter-bootstrap/4.3.1/css/bootstrap.min.css"> <script src="https://cdn.staticfile.org/jquery/3.2.1/jquery.min.js"></script> <script src="https://cdn.staticfile.org/popper.js/1.15.0/umd/popper.min.js"></script> <script src="https://cdn.staticfile.org/twitter-bootstrap/4.3.1/js/bootstrap.min.js"></script> </head> <body> <nav class="navbar navbar-expand-md bg-dark navbar-dark"> <a class="navbar-brand" href="#">Navbar</a> <button class="navbar-toggler" type="button" data-toggle="collapse" data-target="#collapsibleNavbar"> <span class="navbar-toggler-icon"></span> </button> <div class="collapse navbar-collapse" id="collapsibleNavbar"> <ul class="navbar-nav"> <li class="nav-item"> <a class="nav-link" href="#">Link</a> </li> <li class="nav-item"> <a class="nav-link" href="#">Link</a> </li> <li class="nav-item"> <a class="nav-link" href="#">Link</a> </li> </ul> </div> </nav> <br> <div class="container"> <h2>折疊導(dǎo)航欄</h2> <p>通常，小屏幕上我們都會折疊導(dǎo)航欄，通過點(diǎn)擊來顯示導(dǎo)航選項(xiàng)。</p> <p>提示: 如果你刪除 .navbar-expand-md 類，導(dǎo)航鏈接會一直隱藏，且切換按鈕會一直顯示。</p> </div> </body> </html>測試看看 ?/?
導(dǎo)航欄上可以設(shè)置下拉菜單：
<!DOCTYPE html> <html> <head> <title>Bootstrap 示例</title> <meta charset="utf-8"> <meta name="viewport" content="width=device-width, initial-scale=1"> <link rel="stylesheet" href="https://cdn.staticfile.org/twitter-bootstrap/4.3.1/css/bootstrap.min.css"> <script src="https://cdn.staticfile.org/jquery/3.2.1/jquery.min.js"></script> <script src="https://cdn.staticfile.org/popper.js/1.15.0/umd/popper.min.js"></script> <script src="https://cdn.staticfile.org/twitter-bootstrap/4.3.1/js/bootstrap.min.js"></script> </head> <body> <nav class="navbar navbar-expand-sm bg-dark navbar-dark"> <!-- Brand --> <a class="navbar-brand" href="#">Logo</a> <!-- Links --> <ul class="navbar-nav"> <li class="nav-item"> <a class="nav-link" href="#">Link 1</a> </li> <li class="nav-item"> <a class="nav-link" href="#">Link 2</a> </li> <!-- Dropdown --> <li class="nav-item dropdown"> <a class="nav-link dropdown-toggle" href="#" id="navbardrop" data-toggle="dropdown"> Dropdown link </a> <div class="dropdown-menu"> <a class="dropdown-item" href="#">Link 1</a> <a class="dropdown-item" href="#">Link 2</a> <a class="dropdown-item" href="#">Link 3</a> </div> </li> </ul> </nav> <br> <div class="container"> <h2>導(dǎo)航欄使用下拉菜單</h2> <p>導(dǎo)航欄上可以設(shè)置下拉菜單。</p> </div> </body> </html>測試看看 ?/?
導(dǎo)航欄的表單 <form> 元素使用 類來排版輸入框與按鈕：
<!DOCTYPE html> <html> <head> <title>Bootstrap 示例</title> <meta charset="utf-8"> <meta name="viewport" content="width=device-width, initial-scale=1"> <link rel="stylesheet" href="https://cdn.staticfile.org/twitter-bootstrap/4.3.1/css/bootstrap.min.css"> <script src="https://cdn.staticfile.org/jquery/3.2.1/jquery.min.js"></script> <script src="https://cdn.staticfile.org/popper.js/1.15.0/umd/popper.min.js"></script> <script src="https://cdn.staticfile.org/twitter-bootstrap/4.3.1/js/bootstrap.min.js"></script> </head> <body> <nav class="navbar navbar-expand-sm bg-dark navbar-dark"> <form class="form-inline"> <input class="form-control" type="text" placeholder="Search"> <button class="btn btn-success" type="button">Search</button> </form> </nav> <br> <div class="container"> <h2>導(dǎo)航欄的表單</h2> <p>導(dǎo)航欄的表單 form 元素使用 class="form-inline" 類來排版輸入框與按鈕：</p> </div> </body> </html>測試看看 ?/?
你也可以使用其他的輸入框類，如 .input-group-addon 類用于在輸入框前添加小標(biāo)簽。
<!DOCTYPE html> <html> <head> <title>Bootstrap 示例</title> <meta charset="utf-8"> <meta name="viewport" content="width=device-width, initial-scale=1"> <link rel="stylesheet" href="https://cdn.staticfile.org/twitter-bootstrap/4.3.1/css/bootstrap.min.css"> <script src="https://cdn.staticfile.org/jquery/3.2.1/jquery.min.js"></script> <script src="https://cdn.staticfile.org/popper.js/1.15.0/umd/popper.min.js"></script> <script src="https://cdn.staticfile.org/twitter-bootstrap/4.3.1/js/bootstrap.min.js"></script> </head> <body> <nav class="navbar navbar-expand-sm bg-dark navbar-dark"> <form class="form-inline"> <div class="input-group"> <span class="input-group-addon">@</span> <input type="text" class="form-control" placeholder="Username"> </div> </form> </nav> <br> <div class="container"> <h2>導(dǎo)航表單</h2> <p> .input-group-addon 類用于在輸入框前添加小標(biāo)簽。</p> </div> </body> </html>測試看看 ?/?
使用 .navbar-text 類來設(shè)置導(dǎo)航欄上非鏈接文本，可以保證水平對齊，顏色與內(nèi)邊距一樣。
<!DOCTYPE html> <html> <head> <title>Bootstrap 示例</title> <meta charset="utf-8"> <meta name="viewport" content="width=device-width, initial-scale=1"> <link rel="stylesheet" href="https://cdn.staticfile.org/twitter-bootstrap/4.3.1/css/bootstrap.min.css"> <script src="https://cdn.staticfile.org/jquery/3.2.1/jquery.min.js"></script> <script src="https://cdn.staticfile.org/popper.js/1.15.0/umd/popper.min.js"></script> <script src="https://cdn.staticfile.org/twitter-bootstrap/4.3.1/js/bootstrap.min.js"></script> </head> <body> <nav class="navbar navbar-expand-sm bg-dark navbar-dark"> <!-- Links --> <ul class="navbar-nav"> <li class="nav-item"> <a class="nav-link" href="#">Link 1</a> </li> <li class="nav-item"> <a class="nav-link" href="#">Link 2</a> </li> </ul> <!-- Navbar text--> <span class="navbar-text"> Navbar text </span> </nav> <br> <div class="container"> <h2>導(dǎo)航欄文本</h2> <p>使用 .navbar-text 類來設(shè)置導(dǎo)航欄上非鏈接文本，可以保證水平對齊，顏色與內(nèi)邊距一樣。</p> </div> </body> </html>測試看看 ?/?
導(dǎo)航欄可以固定在頭部或者底部。
我們使用 .fixed-top 類來實(shí)現(xiàn)導(dǎo)航欄的固定：
<!DOCTYPE html> <html> <head> <title>Bootstrap 示例</title> <meta charset="utf-8"> <meta name="viewport" content="width=device-width, initial-scale=1"> <link rel="stylesheet" href="https://cdn.staticfile.org/twitter-bootstrap/4.3.1/css/bootstrap.min.css"> <script src="https://cdn.staticfile.org/jquery/3.2.1/jquery.min.js"></script> <script src="https://cdn.staticfile.org/popper.js/1.15.0/umd/popper.min.js"></script> <script src="https://cdn.staticfile.org/twitter-bootstrap/4.3.1/js/bootstrap.min.js"></script> </head> <body style="height:1500px"> <nav class="navbar navbar-expand-sm bg-dark navbar-dark fixed-top"> <a class="navbar-brand" href="#">Logo</a> <ul class="navbar-nav"> <li class="nav-item"> <a class="nav-link" href="#">Link</a> </li> <li class="nav-item"> <a class="nav-link" href="#">Link</a> </li> </ul> </nav> <div class="container-fluid" style="margin-top:80px"> <h2>固定導(dǎo)航欄</h2> <p>導(dǎo)航欄可以固定在頭部或者底部。</p> <h1>滾動頁面查看效果。</h1> </div> </body> </html>測試看看 ?/?
.fixed-bottom 類用于設(shè)置導(dǎo)航欄固定在底部：
<!DOCTYPE html> <html> <head> <title>Bootstrap 示例</title> <meta charset="utf-8"> <meta name="viewport" content="width=device-width, initial-scale=1"> <link rel="stylesheet" href="https://cdn.staticfile.org/twitter-bootstrap/4.3.1/css/bootstrap.min.css"> <script src="https://cdn.staticfile.org/jquery/3.2.1/jquery.min.js"></script> <script src="https://cdn.staticfile.org/popper.js/1.15.0/umd/popper.min.js"></script> <script src="https://cdn.staticfile.org/twitter-bootstrap/4.3.1/js/bootstrap.min.js"></script> </head> <body style="height:1500px"> <nav class="navbar navbar-expand-sm bg-dark navbar-dark fixed-bottom"> <a class="navbar-brand" href="#">Logo</a> <ul class="navbar-nav"> <li class="nav-item"> <a class="nav-link" href="javascript:void(0)">Link</a> </li> <li class="nav-item"> <a class="nav-link" href="javascript:void(0)">Link</a> </li> </ul> </nav> <div class="container-fluid"> <h2>底部固定導(dǎo)航欄</h2> <p>導(dǎo)航欄可以固定在頭部或者底部。</p> <h1>滾動頁面查看效果。</h1> </div> </body> </html>測試看看 ?/?