Bootstrap - 標籤外掛

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標籤在章節Bootstrap 導航元素中介紹。透過組合一些資料屬性，您可以輕鬆建立選項卡介面。使用此外掛，您可以透過選項卡或分頁中的區域性內容面板進行切換，甚至可以透過下拉選單進行切換。

如果您想單獨包含此外掛功能，則需要tab.js。否則，如章節Bootstrap 外掛概述中所述，您可以包含bootstrap.js或最小化版本的bootstrap.min.js。

用法

您可以透過以下兩種方式啟用標籤：

  • 透過資料屬性 - 您需要在錨點中新增data-toggle = "tab"或data-toggle = "pill"。

    向標籤ul新增nav和nav-tabs類將應用 Bootstrap 標籤樣式，而新增nav和nav-pills類將應用分頁樣式。

<ul class = "nav nav-tabs">
   <li><a href = "#identifier" data-toggle = "tab">Home</a></li>
   ...
</ul>

  • 透過 JavaScript - 您可以使用以下 Javascript 啟用標籤：

$('#myTab a').click(function (e) {
   e.preventDefault()
   $(this).tab('show')
})

  • 以下是一個啟用單個標籤的不同方法的示例：

// Select tab by name
$('#myTab a[href = "#profile"]').tab('show')
 
// Select first tab
$('#myTab a:first').tab('show') 

// Select last tab
$('#myTab a:last').tab('show') 

// Select third tab (0-indexed)
$('#myTab li:eq(2) a').tab('show')

淡入淡出效果

要為標籤獲得淡入淡出效果，請向每個.tab-pane新增.fade類。第一個標籤面板還必須具有.in類才能正確淡入初始內容：

<div class = "tab-content">
   <div class = "tab-pane fade in active" id = "home">...</div>
   <div class = "tab-pane fade" id = "svn">...</div>
   <div class = "tab-pane fade" id = "ios">...</div>
   <div class = "tab-pane fade" id = "java">...</div>
</div>

示例

使用資料屬性和淡入淡出效果的標籤外掛示例如下所示：

線上演示 
<ul id = "myTab" class = "nav nav-tabs">
   <li class = "active">
      <a href = "#home" data-toggle = "tab">
         Tutorial Point Home
      </a>
   </li>
   
   <li><a href = "#ios" data-toggle = "tab">iOS</a></li>
	
   <li class = "dropdown">
      <a href = "#" id = "myTabDrop1" class = "dropdown-toggle" data-toggle = "dropdown">
         Java 
         <b class = "caret"></b>
      </a>
      
      <ul class = "dropdown-menu" role = "menu" aria-labelledby = "myTabDrop1">
         <li><a href = "#jmeter" tabindex = "-1" data-toggle = "tab">jmeter</a></li>
         <li><a href = "#ejb" tabindex = "-1" data-toggle = "tab">ejb</a></li>
      </ul>
   </li>
</ul>

<div id = "myTabContent" class = "tab-content">

   <div class = "tab-pane fade in active" id = "home">
      <p>Tutorials Point is a place for beginners in all technical areas.
         This website covers most of the latest technologies and explains each of
         the technology with simple examples.</p>
   </div>
   
   <div class = "tab-pane fade" id = "ios">
      <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 = "tab-pane fade" id = "jmeter">
      <p>jMeter is an Open Source testing software. It is 100% pure Java 
         application for load and performance testing.</p>
   </div>
   
   <div class = "tab-pane fade" id = "ejb">
      <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>

方法

.$().tab - 此方法啟用標籤元素和內容容器。標籤應具有data-target或href屬性，指向 DOM 中的容器節點。

<ul class = "nav nav-tabs" id = "myTab">
   <li class = "active"><a href = "#identifier" data-toggle = "tab">Home</a></li>
   .....
</ul>

<div class = "tab-content">
   <div class = "tab-pane active" id = "home">...</div>
   .....
</div>

<script>
   $(function () {
      $('#myTab a:last').tab('show')
   })
</script>

示例

以下示例顯示了標籤外掛方法.tab的使用。在此示例中，激活了第二個標籤iOS：

線上演示 
<ul id = "myTab" class = "nav nav-tabs">
   <li class = "active">
      <a href = "#home" data-toggle = "tab">
         Tutorial Point Home
      </a>
   </li>
   
   <li><a href = "#ios" data-toggle = "tab">iOS</a></li>
	
   <li class = "dropdown">
	
      <a href = "#" id = "myTabDrop1" class = "dropdown-toggle" data-toggle = "dropdown">
         Java 
         <b class = "caret"></b>
      </a>
      
      <ul class = "dropdown-menu" role = "menu" aria-labelledby = "myTabDrop1">
         <li>
            <a href = "#jmeter" tabindex = "-1" data-toggle = "tab">
               jmeter
            </a>
         </li>
         
         <li>
            <a href = "#ejb" tabindex = "-1" data-toggle = "tab">
               ejb
            </a>
         </li>
      </ul>
   </li>
</ul>

<div id = "myTabContent" class = "tab-content">

   <div class = "tab-pane fade in active" id = "home">
      <p>Tutorials Point is a place for beginners in all technical areas. 
         This website covers most of the latest technologies and explains each of 
         the technology with simple examples.</p>
   </div>
   
   <div class = "tab-pane fade" id = "ios">
      <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 = "tab-pane fade" id = "jmeter">
      <p>jMeter is an Open Source testing software. It is 100% pure Java 
         application for load and performance testing.</p>
   </div>
   
   <div class = "tab-pane fade" id = "ejb">
      <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>

<script>
   $(function () {
      $('#myTab li:eq(1) a').tab('show');
   });
</script>

事件

下表列出了與標籤外掛一起使用的事件。此事件可用於掛鉤到函式。

事件 描述 示例
show.bs.tab 此事件在標籤顯示時觸發，但在新標籤顯示之前。分別使用event.target和event.relatedTarget來定位活動標籤和之前的活動標籤（如果可用）。 
$('a[data-toggle = "tab"]').on('show.bs.tab', function (e) {
   e.target // activated tab
   e.relatedTarget // previous tab
})
shown.bs.tab 此事件在標籤顯示後觸發。分別使用event.target和event.relatedTarget來定位活動標籤和之前的活動標籤（如果可用）。 
$('a[data-toggle = "tab"]').on('shown.bs.tab', function (e) {
   e.target // activated tab
   e.relatedTarget // previous tab
})

示例

以下示例顯示了標籤外掛事件的使用。在此示例中，我們將顯示當前和以前訪問的標籤：

線上演示 
<hr>
<p class = "active-tab"><strong>Active Tab</strong>: <span></span></p>
<p class = "previous-tab"><strong>Previous Tab</strong>: <span></span></p>
<hr>

<ul id = "myTab" class = "nav nav-tabs">
   <li class = "active">
      <a href = "#home" data-toggle = "tab">
         Tutorial Point Home
      </a>
   </li>
   
   <li><a href = "#ios" data-toggle = "tab">iOS</a></li>
	
   <li class = "dropdown">
      <a href = "#" id = "myTabDrop1" class = "dropdown-toggle" data-toggle = "dropdown">
         Java 
         <b class = "caret"></b>
      </a>
      
      <ul class = "dropdown-menu" role = "menu" aria-labelledby = "myTabDrop1">
         <li>
            <a href = "#jmeter" tabindex = "-1" data-toggle = "tab">jmeter</a>
         </li>
         
         <li>
            <a href = "#ejb" tabindex = "-1" data-toggle = "tab">ejb</a>
         </li>
      </ul>
   </li>
</ul>

<div id = "myTabContent" class = "tab-content">

   <div class = "tab-pane fade in active" id = "home">
      <p>Tutorials Point is a place for beginners in all technical areas.
         This website covers most of the latest technologies and explains each of 
         the technology with simple examples.</p>
   </div>
   
   <div class = "tab-pane fade" id = "ios">
      <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 = "tab-pane fade" id = "jmeter">
      <p>jMeter is an Open Source testing software. It is 100% pure Java 
         application for load and performance testing.</p>
   </div>
   
   <div class = "tab-pane fade" id = "ejb">
      <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>

<script>
   $(function(){
      $('a[data-toggle = "tab"]').on('shown.bs.tab', function (e) {
         // Get the name of active tab
         var activeTab = $(e.target).text(); 
         
         // Get the name of previous tab
         var previousTab = $(e.relatedTarget).text(); 
         
         $(".active-tab span").html(activeTab);
         $(".previous-tab span").html(previousTab);
      });
   });
</script>
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