find only open childs and you can use accordion effect on other collaps elements with data-parent selector

like : <div id="selector"> <button class="btn btn-danger" data-toggle="collapse" data-parent="#selector" data-target="#demo"> simple collapsible </button> <div id="demo" class="collapse in"> … </div> <button class="btn btn-danger" data-toggle="collapse" data-parent="#selector" data-target="#demo1"> simple collapsible </button> <div id="demo1" class="collapse"> … </div> <button class="btn btn-danger" data-toggle="collapse" data-parent="#selector" data-target="#demo2"> simple collapsible </button> <div id="demo2" class="collapse"> … </div> </div>