使用引导程序 2.2 我遇到了以下问题：
当我使用响应式布局缩小我的 Firefox 窗口时，导航栏消失了，而我在右上角得到了一个按钮。但是单击该按钮不会执行任何操作（通常应该会弹出菜单）。
我复制了这个 HTML：
http://www.w3resource.com/twitter-bootstrap/example-responsive-design-with-twitter-bootstrap.html
我用以下内容替换了 CSS 和 JS 导入：
<link href="bootstrap/css/bootstrap.css" rel="stylesheet">
<link href="bootstrap/css/bootstrap-responsive.css" rel="stylesheet">
<script src="bootstrap/js/bootstrap.js"></script>
这是下载 Bootstrap 时获得的标准 .css 和 js 文件。CSS 和 bootstrap.js 已正确加载。
bootstrap.js 确实包含折叠部分（我在下面粘贴了该部分）
有没有人知道，为什么在折叠后单击按钮没有任何效果？
我使用的是 firefox 18.0.2，响应式布局在打开其他站点时有效。
非常感谢
bootstrap.js 的折叠部分：
/* =============================================================
* bootstrap-collapse.js v2.2.2
* http://twitter.github.com/bootstrap/javascript.html#collapse
* =============================================================
* Copyright 2012 Twitter, Inc.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
* ============================================================ */
!function ($) {
"use strict"; // jshint ;_;
/* COLLAPSE PUBLIC CLASS DEFINITION
* ================================ */
var Collapse = function (element, options) {
this.$element = $(element)
this.options = $.extend({}, $.fn.collapse.defaults, options)
if (this.options.parent) {
this.$parent = $(this.options.parent)
}
this.options.toggle && this.toggle()
}
Collapse.prototype = {
constructor: Collapse
, dimension: function () {
var hasWidth = this.$element.hasClass('width')
return hasWidth ? 'width' : 'height'
}
, show: function () {
var dimension
, scroll
, actives
, hasData
if (this.transitioning) return
dimension = this.dimension()
scroll = $.camelCase(['scroll', dimension].join('-'))
actives = this.$parent && this.$parent.find('> .accordion-group > .in')
if (actives && actives.length) {
hasData = actives.data('collapse')
if (hasData && hasData.transitioning) return
actives.collapse('hide')
hasData || actives.data('collapse', null)
}
this.$element[dimension](0)
this.transition('addClass', $.Event('show'), 'shown')
$.support.transition && this.$element[dimension](this.$element[0][scroll])
}
, hide: function () {
var dimension
if (this.transitioning) return
dimension = this.dimension()
this.reset(this.$element[dimension]())
this.transition('removeClass', $.Event('hide'), 'hidden')
this.$element[dimension](0)
}
, reset: function (size) {
var dimension = this.dimension()
this.$element
.removeClass('collapse')
[dimension](size || 'auto')
[0].offsetWidth
this.$element[size !== null ? 'addClass' : 'removeClass']('collapse')
return this
}
, transition: function (method, startEvent, completeEvent) {
var that = this
, complete = function () {
if (startEvent.type == 'show') that.reset()
that.transitioning = 0
that.$element.trigger(completeEvent)
}
this.$element.trigger(startEvent)
if (startEvent.isDefaultPrevented()) return
this.transitioning = 1
this.$element[method]('in')
$.support.transition && this.$element.hasClass('collapse') ?
this.$element.one($.support.transition.end, complete) :
complete()
}
, toggle: function () {
this[this.$element.hasClass('in') ? 'hide' : 'show']()
}
}
/* COLLAPSE PLUGIN DEFINITION
* ========================== */
var old = $.fn.collapse
$.fn.collapse = function (option) {
return this.each(function () {
var $this = $(this)
, data = $this.data('collapse')
, options = typeof option == 'object' && option
if (!data) $this.data('collapse', (data = new Collapse(this, options)))
if (typeof option == 'string') data[option]()
})
}
$.fn.collapse.defaults = {
toggle: true
}
$.fn.collapse.Constructor = Collapse
/* COLLAPSE NO CONFLICT
* ==================== */
$.fn.collapse.noConflict = function () {
$.fn.collapse = old
return this
}
/* COLLAPSE DATA-API
* ================= */
$(document).on('click.collapse.data-api', '[data-toggle=collapse]', function (e) {
var $this = $(this), href
, target = $this.attr('data-target')
|| e.preventDefault()
|| (href = $this.attr('href')) && href.replace(/.*(?=#[^\s]+$)/, '') //strip for ie7
, option = $(target).data('collapse') ? 'toggle' : $this.data()
$this[$(target).hasClass('in') ? 'addClass' : 'removeClass']('collapsed')
$(target).collapse(option)
})
`