Bootstrap - Scrollspy Eklentisi

Kaydırma casusu (otomatik güncelleme nav) eklentisi, kaydırma konumuna göre sayfanın bölümlerini hedeflemenizi sağlar. Temel uygulamasında, kaydırdıkça ekleyebilirsiniz.active kaydırma konumuna göre sınıflar gezinme çubuğuna.

Bu eklenti işlevini ayrı ayrı dahil etmek istiyorsanız, ihtiyacınız olacak scrollspy.js. Aksi takdirde, Bootstrap Eklentilerine Genel Bakış bölümünde belirtildiği gibi , bootstrap.js veya küçültülmüş bootstrap.min.js'yi dahil edebilirsiniz .

Kullanım

Üst çubuk gezintinize kaydırma casusu davranışı ekleyebilirsiniz -

  • Via data attributes - ekle data-spy = "scroll"casusluk yapmak istediğiniz öğeye (tipik olarak vücut). Ardından öznitelik ekleyindata-target herhangi bir Bootstrap'in üst öğesinin kimliği veya sınıfı ile .navbileşen. Bunun işe yaraması için, sayfanın gövdesinde gözetlediğiniz bağlantıların eşleşen kimliklerine sahip öğelere sahip olmanız gerekir.

<body data-spy = "scroll" data-target = ".navbar-example">
   ...
   <div class = "navbar-example">
      <ul class = "nav nav-tabs">
         ...
      </ul>
   </div>
   ...
</body>
  • Via JavaScript - Casusluk yapılacak öğeyi seçerek ve ardından casusluk yapılacak öğeyi seçerek, veri niteliklerini kullanmak yerine JavaScript ile kaydırma casusunu .scrollspy() işlev -

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

Misal

Aşağıdaki örnek, scrollspy eklentisinin veri öznitelikleri aracılığıyla kullanımını gösterir -

<nav id = "navbar-example" class = "navbar navbar-default navbar-static" role = "navigation">
   
   <div 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>
   </div>
   
   <div class = "collapse navbar-collapse bs-js-navbar-scrollspy">
      <ul class = "nav navbar-nav">
         <li><a href = "#ios">iOS</a></li>
         <li><a href = "#svn">SVN</a></li>
         
         <li 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">
               <li><a href = "#jmeter" tabindex = "-1">jmeter</a></li>
               <li><a href = "#ejb" tabindex = "-1">ejb</a></li>
               
               <li class = "divider"></li>
               <li><a href = "#spring" tabindex = "-1">spring</a></li>
            </ul>
            
         </li>
      </ul>
   </div>
   
</nav>

<div 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 
      license. 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 
      application 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 applications to be deployed 
      on J2EE compliant Application 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 
      applications very easily and very rapidly.</p>
   
   <p>Spring framework was initially written by Rod Johnson and was first 
      released under the Apache 2.0 license in June 2003.</p>
   
</div>

Seçenekler

Seçenekler, veri özellikleri veya JavaScript aracılığıyla aktarılabilir. Aşağıdaki tablo seçenekleri listeler -

Seçenek Adı Tür / Varsayılan Değer Veri özelliği adı Açıklama
ofset sayı Varsayılan: 10 veri uzaklığı Kaydırma konumu hesaplanırken üstten kaydırılacak pikseller.

Yöntemler

.scrollspy('refresh') - Scrollspy'i JavaScript yöntemiyle çağırırken, .refreshDOM'u güncelleme yöntemi. Bu, DOM'un herhangi bir öğesi değiştiyse, yani bazı öğeler eklediyseniz veya kaldırdıysanız yararlıdır. Bu yöntemi kullanmak için sözdizimi aşağıdadır.

$('[data-spy = "scroll"]').each(function () {
   var $spy = $(this).scrollspy('refresh')
})

Misal

Aşağıdaki örnek, .scrollspy('refresh') yöntem -

<nav id = "myScrollspy" class = "navbar navbar-default navbar-static" role = "navigation">
   
   <div 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>
   </div>
   
   <div class = "collapse navbar-collapse bs-js-navbar-scrollspy">
      <ul class = "nav navbar-nav">
         <li class = "active"><a href = "#ios">iOS</a></li>
         <li><a href = "#svn">SVN</a></li>
         
         <li 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">
               <li><a href = "#jmeter" tabindex = "-1">jmeter</a></li>
               <li><a href = "#ejb" tabindex = "-1">ejb</a></li>
               
               <li class = "divider"></li>
               <li><a href = "#spring" tabindex = "-1">spring</a></li>
            </ul>
            
         </li>
      </ul>
   </div>
   
</nav>

<div data-spy = "scroll" data-target = "#myScrollspy" data-offset = "0"  
   style = "height:200px; overflow:auto; position: relative;">
   
   <div class = "section">
      <h4 id = "ios">iOS<small><a href = "#" onclick = "removeSection(this);">
         &times; Remove this section</a></small>
      </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>
   </div>
   
   <div class = "section">
      <h4 id = "svn">SVN<small></small></h4>
      <p>Apache Subversion which is often abbreviated as SVN, is a software 
         versioning and revision control system distributed under an open source 
         license. 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>
   </div>
   
   <div class = "section">
      <h4 id = "jmeter">jMeter<small><a href = "#" onclick = "removeSection(this);">
         &times; Remove this section</a></small>
      </h4>
      
      <p>jMeter is an Open Source testing software. It is 100% pure Java 
         application for load and performance testing.</p>
   </div>
   
   <div class = "section">
      <h4 id = "ejb">EJB</h4>
      
      <p>Enterprise Java Beans (EJB) is a development architecture for 
         building highly scalable and robust enterprise level applications 
         to be deployed on J2EE compliant Application Server such as 
         JBOSS, Web Logic etc.</p>
   </div>
	
   <div class = "section">
      <h4 id = "spring">Spring</h4>
      
      <p>Spring framework is an open source Java platform that provides 
         comprehensive infrastructure support for developing robust Java 
         applications very easily and very rapidly.</p>
      
      <p>Spring framework was initially written by Rod Johnson and was first 
         released under the Apache 2.0 license in June 2003.</p>
   </div>
   
</div>

<script type = "text/javascript">
   $(function(){
      removeSection = function(e) {
         $(e).parents(".section").remove();
         
         $('[data-spy = "scroll"]').each(function () {
            var $spy = $(this).scrollspy('refresh')
         });
      }
      $("#myScrollspy").scrollspy();
   });
</script>

Etkinlikler

Aşağıdaki tablo scrollspy ile çalışacak olayları listeler. Bu olay, işleve bağlanmak için kullanılabilir.

Etkinlik Açıklama Misal
activ.bs.scrollspy Bu olay, parşömen casusu tarafından yeni bir öğe etkinleştirildiğinde tetiklenir.
$('#myScrollspy').on('activate.bs.scrollspy', function () {
   // do something…
})

Misal

Aşağıdaki örnek, activate.bs.scrollspy olay -

<html>
   <head>
      <link rel = "stylesheet" href = "bootstrap/css/bootstrap.min.css">
      <script src = "bootstrap/scripts/jquery.min.js"></script>
      <script src = "bootstrap/js/bootstrap.min.js"></script>
      
      <script>
         $(document).ready(function(){
            removeSection = function(e) {
               $(e).parents(".subject").remove();
            
               $('[data-spy="scroll"]').each(function () {
                  var $spy = $(this).scrollspy('refresh')
               });
            }
         
            $("#Navexample").scrollspy();
         
            // The event is fired when an item gets actived with the scrollspy
            $("#Navexample").on('activate.bs.scrollspy', function () {
               var currentSection = $(".nav li.active > a").text();
               $("#spyevent").html("Current Item being viewed >> " + currentSection);
            })
				
         });
      </script>
   
      <style>
         .scroll-box {
            height: 250px;
            position: relative;
            overflow: auto;
            font-size:2em;
         }
      </style>
   </head>
   
   <body>
      <div class = "container">
         <nav id = "Navexample" class = "navbar navbar-default" role = "navigation">
      
            <!-- Nav Bar -->
            <div class = "navbar-header">
               <button type = "button" class = "navbar-toggle" 
                  data-toggle = "collapse" data-target = "#navbarCollapse">
               
                  <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 = "#">Tutorials Point</a>
            </div>
            
            <!-- Links and Sublinks -->
            <div class = "collapse navbar-collapse" id = "navbarCollapse">
               <ul class = "nav navbar-nav">
                  <li class = "active"><a href = "#subject-1">Subject 1</a></li>
                  <li><a href = "#subject-2">Subject 2</a></li>
               
                  <li class = "dropdown"><a href = "#" class = "dropdown-toggle" 
                     data-toggle = "dropdown">Subject 3<b class = "caret"></b></a>
                     
                     <ul class = "dropdown-menu">
                        <li><a href = "#subject-3-1">Subject 3.1</a></li>
                        <li><a href = "#subject-3-2">Subject 3.2</a></li>
                        <li><a href = "#subject-3-3">Subject 3.3</a></li>
                     </ul>
                     
                  </li>
						
                  <li><a href = "#subject-4">Subject 4</a></li>
               </ul>
            </div>
            
         </nav>
         
         <div class = "scroll-box" data-spy = "scroll" data-offset = "0">
            <div class = "subject">
            
               <h3 id = "subject-1">Subject 1 
                  <small><a href = "#" onclick = "removeSubject(this);">Remove Subject ×</a></small>
               </h3>
            
               <p>Lorem ipsum dolor sit amet, consectetur adipisicing elit,
                  sed do eiusmod tempor incididunt ut labore et dolore magna
                  aliqua. Ut enim ad minim veniam, quis nostrud exercitation
                  ullamco laboris nisi ut aliquip ex ea commodo consequat.</p>
            </div>
				
            <hr>
         
            <div class = "subject">
               <h3 id = "subject-2">Subject 2 
                  <small><a href = "#" onclick = "removeSubject(this);">Remove Subject ×</a></small>
               </h3>
            
               <p>Lorem ipsum dolor sit amet, consectetur adipisicing elit,
                  sed do eiusmod tempor incididunt ut labore et dolore magna
                  aliqua. Ut enim ad minim veniam, quis nostrud exercitation
                  ullamco laboris nisi ut aliquip ex ea commodo consequat.</p>
            </div>
				
            <hr>
         
            <div class = "subject">
               <h3 id = "subject-3">Subject 3 
                  <small><a href = "#" onclick = "removeSubject(this);"> Remove Subject ×</a></small>
               </h3>
            
               <p>Lorem ipsum dolor sit amet, consectetur adipisicing elit,
                  sed do eiusmod tempor incididunt ut labore et dolore magna
                  aliqua. Ut enim ad minim veniam, quis nostrud exercitation
                  ullamco laboris nisi ut aliquip ex ea commodo consequat.</p><
            </div>
				
            <hr>
            
            <div class = "subject">
               <h4 id = "subject-3-1">Subject 3.1
                  <small><a href = "#" onclick = "removeSubject(this);"> Remove Subject ×</a></small>
               </h4>
               
               <p>Lorem ipsum dolor sit amet, consectetur adipisicing elit,
                  sed do eiusmod tempor incididunt ut labore et dolore magna
                  aliqua. Ut enim ad minim veniam, quis nostrud exercitation
                  ullamco laboris nisi ut aliquip ex ea commodo consequat.</p>
            </div>
            
            <div class = "subject">
               <h4 id = "subject-3-2">Subject 3.2
                  <small><a href = "#" onclick = "removeSubject(this);"> Remove Subject ×</a></small>
               </h4>
               
               <p>Lorem ipsum dolor sit amet, consectetur adipisicing elit,
                  sed do eiusmod tempor incididunt ut labore et dolore magna
                  aliqua. Ut enim ad minim veniam, quis nostrud exercitation
                  ullamco laboris nisi ut aliquip ex ea commodo consequat.</p>
            </div>
            
            <div class = "subject">
               <h4 id = "subject-3-3">Subject 3.3 
                  <small><a href = "#" onclick = "removeSubject(this);">Remove Subject ×</a></small>
               </h4>
               
               <p>Lorem ipsum dolor sit amet, consectetur adipisicing elit,
                  sed do eiusmod tempor incididunt ut labore et dolore magna
                  aliqua. Ut enim ad minim veniam, quis nostrud exercitation
                  ullamco laboris nisi ut aliquip ex ea commodo consequat.</p>
            </div>
				
            <hr>
            
            <div class = "subject">
               <h3 id = "subject-4">Subject 4 
                  <small><a href = "#" onclick = "removeSubject(this);">Remove Subject ×</a></small>
               </h3>
               
               <p>Lorem ipsum dolor sit amet, consectetur adipisicing elit,
                  sed do eiusmod tempor incididunt ut labore et dolore magna
                  aliqua. Ut enim ad minim veniam, quis nostrud exercitation
                  ullamco laboris nisi ut aliquip ex ea commodo consequat.</p>
            </div>
            
         </div>
         <hr>
         
         <h4 id = "spyevent" class = "text-info"></h4>
      </div>
   </body>
</html>