Bootstrap 3 之 Bootstrap 导航元素

Bootstrap 导航元素

本章我们将讲解 Bootstrap 提供的用于定义导航元素的一些选项。它们使用相同的标记和基类 .nav。Bootstrap 也提供了一个用于共享标记和状态的帮助器类。改变修饰的 class,可以在不同的样式间进行切换。

表格导航或标签

创建一个标签式的导航菜单:

  • 以一个带有 class .nav 的无序列表开始。

  • 添加 class .nav-tabs

下面的实例演示了这点:

--------------------------------------------------
-----------------------------------------------------------------------------------
------------------------------------------------------------------------------------------------------------------------
-------------------------------------------------------------------------------------------------------
-------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
------------------------------------------------------------------------------------------------
---------------------------------------------------------------------------
---------------------------------------------------------------------------
------------------------------------------------------------------------------
----------------------------------------------------------------------------
----------------------------------------------------------------------------------------------------------------

结果如下所示:

胶囊式的导航菜单

基本的胶囊式导航菜单

如果需要把标签改成胶囊的样式,只需要使用 class .nav-pills 代替 .nav-tabs 即可,其他的步骤与上面相同。

下面的实例演示了这点:

--------------------------------------------------
-------------------------------------------------------------------------------------
------------------------------------------------------------------------------------------------------------------------
-------------------------------------------------------------------------------------------------------
----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
------------------------------------------------------------------------------------------------
---------------------------------------------------------------------------
---------------------------------------------------------------------------
------------------------------------------------------------------------------
----------------------------------------------------------------------------
----------------------------------------------------------------------------------------------------------------

结果如下所示:

垂直的胶囊式导航菜单

您可以在使用 class .nav、.nav-pills 的同时使用 class .nav-stacked,让胶囊垂直堆叠。

下面的实例演示了这点:

--------------------------------------------------
-------------------------------------------------------------------------------------
------------------------------------------------------------------------------------------------------------------------
-------------------------------------------------------------------------------------------------------
---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
------------------------------------------------------------------------------------------------
---------------------------------------------------------------------------
---------------------------------------------------------------------------
------------------------------------------------------------------------------
----------------------------------------------------------------------------
----------------------------------------------------------------------------------------------------------------

结果如下所示:

两端对齐的导航

您可以在屏幕宽度大于 768px 时,通过在分别使用 .nav、.nav-tabs.nav、.nav-pills 的同时使用 class .nav-justified,让标签式或胶囊式导航菜单与父元素等宽。在更小的屏幕上,导航链接会堆叠。

下面的实例演示了这点:

--------------------------------------------------
------------------------------------------------------------------------------------
------------------------------------------------------------------------------------------------------------------------
-------------------------------------------------------------------------------------------------------
----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
------------------------------------------------------------------------------------------------
---------------------------------------------------------------------------
---------------------------------------------------------------------------
------------------------------------------------------------------------------
----------------------------------------------------------------------------
--------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
------------------------------------------------------------------------------------------------
---------------------------------------------------------------------------
---------------------------------------------------------------------------
------------------------------------------------------------------------------
----------------------------------------------------------------------------
----------------------------------------------------------------------------------------------------------------

结果如下所示:

禁用链接

对每个 .nav class,如果添加了 .disabled class,则会创建一个灰色的链接,同时禁用了该链接的 :hover 状态,如下面的实例所示:

--------------------------------------------------
-------------------------------------------------------------------------------------
------------------------------------------------------------------------------------------------------------------------
-------------------------------------------------------------------------------------------------------
----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
------------------------------------------------------------------------------------------------
---------------------------------------------------------------------------
-------------------------------------------------------------------------------------------------------
------------------------------------------------------------------------------
----------------------------------------------------------------------------
---------------------------------------------------------------------------------------------------------------------------------------------------
------------------------------------------------------------------------------------------------
---------------------------------------------------------------------------
---------------------------------------------------------------------------
----------------------------------------------------------------------------------------------------------------
----------------------------------------------------------------------------
-------------------------------------------------------------------------------------- --------------------------

结果如下所示:

下拉菜单

导航菜单与下拉菜单使用相似的语法。默认情况下,列表项的锚与一些数据属性协同合作来触发带有 .dropdown-menu class 的无序列表。

带有下拉菜单的标签

向标签添加下拉菜单的步骤如下:

  • 以一个带有 class .nav 的无序列表开始。

  • 添加 class .nav-tabs

  • 添加带有 .dropdown-menu class 的无序列表。

--------------------------------------------------
------------------------------------------------------------------------------------
------------------------------------------------------------------------------------------------------------------------
-------------------------------------------------------------------------------------------------------
--------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
------------------------------------------------------------------------------------------------
---------------------------------------------------------------------------
---------------------------------------------------------------------------
------------------------------------------------------------------------------
--------------------------------------------------
--------------------------------------------------------------------------------------------------------------------
------------------------------------------------------------------------------------------------------------
----------------------------------------------
-------------------------------------------------------------------------
-----------------------------------------------------------------------------------------------------------------
------------------------------------------------------------------------------------------------------------------
---------------------------------------------------------------------------------------------------------------
------------------------------------------------------------------------------------------------
-----------------------------------------------------------------------------------------------------------------
-----------------------------------------------
-----------------------------
----------------------------------------------------------------------------------------------------------------

结果如下所示:

带有下拉菜单的胶囊

步骤与创建带有下拉菜单的标签相同,只是需要把 .nav-tabs class 改为 .nav-pills,如下面的实例所示:

--------------------------------------------------
------------------------------------------------------------------------------------
------------------------------------------------------------------------------------------------------------------------
-------------------------------------------------------------------------------------------------------
---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
------------------------------------------------------------------------------------------------
---------------------------------------------------------------------------
---------------------------------------------------------------------------
------------------------------------------------------------------------------
--------------------------------------------------
--------------------------------------------------------------------------------------------------------------------
------------------------------------------------------------------------------------------------------------
----------------------------------------------
-------------------------------------------------------------------------
-----------------------------------------------------------------------------------------------------------------
------------------------------------------------------------------------------------------------------------------
---------------------------------------------------------------------------------------------------------------
------------------------------------------------------------------------------------------------
-----------------------------------------------------------------------------------------------------------------
-----------------------------------------------
-----------------------------
----------------------------------------------------------------------------------------------------------------

结果如下所示:


上一篇:Bootstrap 输入框组
下一篇:Bootstrap 导航栏