jquery - Bootstrap 下拉菜单 : events for the 'navbar-toggle' ?

Question

当我们在较小的屏幕上时，我们是否有 navbar-toggle 的事件？

例如，

$('#myDropdown').on('shown.bs.navbar-toggle', function () {
  // do something…
});

$('#myDropdown').on('hide.bs.navbar-toggle', function () {
  // do something…
});

html,

<div class="navbar-header">
  <button type="button" class="navbar-toggle" data-toggle="collapse" data-target=".navbar-collapse">
    <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="#">Home</a>-->
</div>

否则，我们如何检测小屏幕上是否存在 navbar-toggle？

Answer 1

navbar-toggle 方法发出 Collapse 事件:

事件

Bootstrap 的折叠类公开了一些用于连接折叠功能的事件。

Event Type           Description
show.bs.collapse     This event fires immediately when the show instance method is called.
shown.bs.collapse    This event is fired when a collapse element has been made visible to     the user (will wait for CSS transitions to complete).
hide.bs.collapse     This event is fired immediately when the hide method has been called. 
hidden.bs.collapse   This event is fired when a collapse element has been hidden from the user (will wait for CSS transitions to complete).

例子

$('#myCollapsible').on('hidden.bs.collapse', function () {
  // do something…
})

文档:http://getbootstrap.com/javascript/#collapse