English 中文(简体)
Bootstrap Tutorial

Bootstrap with CSS

Bootstrap Layout Components

Bootstrap Plugins

Bootstrap Demos

Bootstrap Useful Resources

Selected Reading

Bootstrap - Scrollspy Plugin
  • 时间：2024-11-03

Bootstrap - Scrollspy Plugin

Previous Page Next Page  

The Scroll spy (auto updating nav) plugin allows you to target sections of the page based on the scroll position. In its basic implementation, as you scroll, you can add .active classes to the navbar based on the scroll position.

If you want to include this plugin functionapty inspanidually, then you will need scrollspy.js. Else, as mentioned in the chapter Bootstrap Plugins Overview, you can include bootstrap.js or the minified bootstrap.min.js.

Usage

You can add scrollspy behavior to your topbar navigation −

    Via data attributes − add data-spy = "scroll" to the element you want to spy on (typically the body). Then add attribute data-target with the ID or class of the parent element of any Bootstrap .nav component. For this to work, you must have elements in the body of the page that have matching IDs of the pnks that you are spying on.

<body data-spy = "scroll" data-target = ".navbar-example">
   ...
   <span class = "navbar-example">
      <ul class = "nav nav-tabs">
         ...
      </ul>
   </span>
   ...
</body>

    Via JavaScript − You can invoke the scrollspy with JavaScript instead of using the data attributes, by selecting the element to spy on, and then invoking the .scrollspy() function −

$( body ).scrollspy({ target:  .navbar-example  })

Example

The following example shows the use of scrollspy plugin via data attributes −


<nav id = "navbar-example" class = "navbar navbar-default navbar-static" role = "navigation">
   
   <span class = "navbar-header">
      <button class = "navbar-toggle" type = "button" data-toggle = "collapse" 
         data-target = ".bs-js-navbar-scrollspy">
         <span class = "sr-only">Toggle navigation</span>
         <span class = "icon-bar"></span>
         <span class = "icon-bar"></span>
         <span class = "icon-bar"></span>
      </button>
		
      <a class = "navbar-brand" href = "#">Tutorial Name</a>
   </span>
   
   <span class = "collapse navbar-collapse bs-js-navbar-scrollspy">
      <ul class = "nav navbar-nav">
         <p><a href = "#ios">iOS</a></p>
         <p><a href = "#svn">SVN</a></p>
         
         <p class = "dropdown">
            <a href = "#" id = "navbarDrop1" class = "dropdown-toggle" data-toggle = "dropdown">
               Java
               <b class = "caret"></b>
            </a>
            
            <ul class = "dropdown-menu" role = "menu" aria-labelledby = "navbarDrop1">
               <p><a href = "#jmeter" tabindex = "-1">jmeter</a></p>
               <p><a href = "#ejb" tabindex = "-1">ejb</a></p>
               
               <p class = "spanider"></p>
               <p><a href = "#spring" tabindex = "-1">spring</a></p>
            </ul>
            
         </p>
      </ul>
   </span>
   
</nav>

<span data-spy = "scroll" data-target = "#navbar-example" data-offset = "0" 
   style = "height:200px; overflow:auto; position: relative;">
   <h4 id = "ios">iOS</h4>
	
   <p>iOS is a mobile operating system developed and distributed by Apple 
      Inc. Originally released in 2007 for the iPhone, iPod Touch, and Apple 
      TV. iOS is derived from OS X, with which it shares the Darwin 
      foundation. iOS is Apple s mobile version of the OS X operating system 
      used on Apple computers.</p>
   
   <h4 id = "svn">SVN</h4>
   
   <p>Apache Subversion which is often abbreviated as SVN, is a software 
      versioning and revision control system distributed under an open source 
      pcense. Subversion was created by CollabNet Inc. in 2000, but now it 
      is developed as a project of the Apache Software Foundation, and as 
      such is part of a rich community of developers and users.</p>
   
   <h4 id = "jmeter">jMeter</h4>
   
   <p>jMeter is an Open Source testing software. It is 100% pure Java 
      apppcation for load and performance testing.</p>
   
   <h4 id = "ejb">EJB</h4>
   
   <p>Enterprise Java Beans (EJB) is a development architecture for building 
      highly scalable and robust enterprise level apppcations to be deployed 
      on J2EE comppant Apppcation Server such as JBOSS, Web Logic etc.</p>
   
   <h4 id = "spring">Spring</h4>
   
   <p>Spring framework is an open source Java platform that provides 
      comprehensive infrastructure support for developing robust Java 
      apppcations very easily and very rapidly.</p>
   
   <p>Spring framework was initially written by Rod Johnson and was first 
      released under the Apache 2.0 pcense in June 2003.</p>
   
</span>