Collapsible Accordion - Multiple Open Items - BS Plugin Required - Sub-optimal

by bizamajig

HTML

<link rel="stylesheet" href="http://netdna.bootstrapcdn.com/bootstrap/3.1.1/css/bootstrap.min.css">
<script src="http://netdna.bootstrapcdn.com/bootstrap/3.1.1/js/bootstrap.min.js"></script>
<div class="accordion" id="accordion2" data-collapse-type="manual">
        <div class="accordion-group">
          <div class="accordion-heading">
            <a class="accordion-toggle" data-toggle="collapse" data-parent="#accordion2" href="#collapseOne">
              Item #1
            </a>
          </div>
          <div id="collapseOne" class="accordion-body collapse in">
            <div class="accordion-inner">
              Anim pariatur cliche reprehenderit, enim eiusmod high life accusamus terry richardson ad squid. 3 wolf moon officia aute, non cupidatat skateboard dolor brunch. Food truck quinoa nesciunt laborum eiusmod. Brunch 3 wolf moon tempor, sunt aliqua put a bird on it squid single-origin coffee nulla assumenda shoreditch et. Nihil anim keffiyeh helvetica, craft beer labore wes anderson cred nesciunt sapiente ea proident. Ad vegan excepteur butcher vice lomo. Leggings occaecat craft beer farm-to-table, raw denim aesthetic synth nesciunt you probably haven't heard of them accusamus labore sustainable VHS.
            </div>
          </div>
        </div>
        <div class="accordion-group">
          <div class="accordion-heading">
            <a class="accordion-toggle" data-toggle="collapse" data-parent="#accordion2" href="#collapseTwo">
              Item #2
            </a>
          </div>
          <div id="collapseTwo" class="accordion-body collapse">
            <div class="accordion-inner">
              Anim pariatur cliche reprehenderit, enim eiusmod high life accusamus terry richardson ad squid. 3 wolf moon officia aute, non cupidatat skateboard dolor brunch. Food truck quinoa nesciunt laborum eiusmod. Brunch 3 wolf moon tempor, sunt aliqua put a bird on it squid single-origin coffee nulla assumenda shoreditch et. Nihil anim keffiyeh...

CSS

.accordion-body {background: #f90; display: none;}
.accordion-body.in {display: block;}

JavaScript

/* =============================================================
 * bootstrap-collapse.js v2.0.2
 * 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"

  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 = this.dimension()
        , scroll = $.camelCase(['scroll', dimension].join('-'))
        , actives = this.$parent && this.$parent.find('.in')
        , hasData
      
      //Here is the trick
      //Check for data collapse attribute then trigger hide
      if ( this.$parent.attr("data-collapse-type") !== "manual" && actives && actives.length) {
        hasData = actives.data('collapse')
        actives.collapse('hide')
        hasData || actives.data('collapse', null)
      }

      this.$element[dimension](0)
      this.transition('addClass', 'show', 'shown')
  ...