代码
引入bootstrap.js 和bootstrap.css两个文件
<!DOCTYPE html> <html> <head> <meta charset="utf-8"> <title>Bootstrap 实例</title> <meta name="viewport" content="width=device-width, initial-scale=1"> <link rel="stylesheet" href="https://cdn.bootcss.com/bootstrap/3.3.7/css/bootstrap.min.css"> <script src="https://cdn.bootcss.com/jquery/2.1.1/jquery.min.js"></script> <script src="https://cdn.bootcss.com/bootstrap/3.3.7/js/bootstrap.min.js"></script> <style> body { position: relative; } ul.nav-pills { top: 20px; position: fixed; } div.col-sm-9 div { height: 250px; font-size: 28px; } #section1 {color: #fff; background-color: #1E88E5;} #section2 {color: #fff; background-color: #673ab7;} #section3 {color: #fff; background-color: #ff9800;} #section41 {color: #fff; background-color: #00bcd4;} #section42 {color: #fff; background-color: #009688;} @media screen and (max- 810px) { #section1, #section2, #section3, #section41, #section42 { margin-left: 150px; } } </style> </head> <body data-spy="scroll" data-target="#myScrollspy" data-offset="20"> <div class="container"> <div class="row"> <nav class="col-sm-3" id="myScrollspy"> <div class="container-fluid"> <div class="container-fluid"> <ul class="nav nav-pills nav-stacked"> <li class="active"><a href="#section1">Section 1</a></li> <li><a href="#section2">Section 2</a></li> <li><a href="#section3">Section 3</a></li> <li class="dropdown"> <a class="dropdown-toggle" data-toggle="dropdown" href="#">Section 4 <span class="caret"></span></a> <ul class="dropdown-menu"> <li><a href="#section41">Section 4-1</a></li> <li><a href="#section42">Section 4-2</a></li> </ul> </li> </ul> </div> </div> </nav> <div class="col-sm-9"> <div id="section1"> <h1>Section 1</h1> <p>Try to scroll this section and look at the navigation list while scrolling!</p> </div> <div id="section2"> <h1>Section 2</h1> <p>Try to scroll this section and look at the navigation list while scrolling!</p> </div> <div id="section3"> <h1>Section 3</h1> <p>Try to scroll this section and look at the navigation list while scrolling!</p> </div> <div id="section41"> <h1>Section 4-1</h1> <p>Try to scroll this section and look at the navigation list while scrolling!</p> </div> <div id="section42"> <h1>Section 4-2</h1> <p>Try to scroll this section and look at the navigation list while scrolling!</p> </div> </div> </div> </div> </body> </html>