嵌套 Bootstrap 可折疊按鈕的 jQuery show.bs.collapse 事件在比預期更多的按鈕上觸發

Question

我正在使用 Bootstrap 制作可折疊的嵌套 div/按鈕。 我想在展開時折疊 div 的所有兄弟，並在折疊時折疊 div 的所有子級（以便展開的 div 僅從根 div 之一到內部 div 的一條路徑）。

我選擇使用 jQuery 而不是使用 Bootstrap 的 Accordion - 只是帶有關聯 div 的按鈕。

所以我嘗試選擇所有可以展開的 div 並使用 show.bs.collapse 事件，以便我知道哪個 div 被展開了。

$(function () {
  $(".collapse").on('show.bs.collapse', function () {
    console.log ($(this).context.id);
  })
});

如果我的樹是這樣的：

• 1 - 擴展

  • 2 - 擴展

    • 3 - 折疊

  • 4 - 折疊

• 5 - 折疊

• 6 - 倒塌

我擴展了 3，我沒有得到：

3

但：

3
2
1

為什么將 show.bs.collapse 應用於 div 1 和 2？

Answer 1

嘗試

 $(function() { $(".collapse").on('show.bs.collapse', function(e) { if ($(this).is(e.target)) { snippet.log(this.id) } }) });

 <!-- Provides the `snippet` object, see http://meta.stackexchange.com/a/242144/134069 --> <script src="http://tjcrowder.github.io/simple-snippets-console/snippet.js"></script> <script type="text/javascript" src="//code.jquery.com/jquery-1.10.1.js"></script> <link rel="stylesheet" type="text/css" href="https://cdnjs.cloudflare.com/ajax/libs/twitter-bootstrap/3.3.4/css/bootstrap.css"> <link rel="stylesheet" type="text/css" href="https://cdnjs.cloudflare.com/ajax/libs/twitter-bootstrap/3.3.4/css/bootstrap-theme.css"> <script type="text/javascript" src="https://cdnjs.cloudflare.com/ajax/libs/twitter-bootstrap/3.3.4/js/bootstrap.js"></script> <div class="panel-group" id="accordion" role="tablist" aria-multiselectable="true"> <div class="panel panel-default"> <div class="panel-heading" role="tab" id="headingOne"> <h4 class="panel-title"> <a role="button" data-toggle="collapse" data-parent="#accordion" href="#collapseOne" aria-expanded="true" aria-controls="collapseOne"> Collapsible Group Item #1 </a> </h4> </div> <div id="collapseOne" class="panel-collapse collapse in" role="tabpanel" aria-labelledby="headingOne"> <div class="panel-body"> <div class="panel-group" id="accordion1-1" role="tablist" aria-multiselectable="true"> <div class="panel panel-default"> <div class="panel-heading" role="tab" id="headingOne-1"> <h4 class="panel-title"> <a role="button" data-toggle="collapse" data-parent="#accordion1-1" href="#collapseOne-1" aria-expanded="true" aria-controls="collapseOne"> Collapsible Group Item #1-1 </a> </h4> </div> <div id="collapseOne-1" class="panel-collapse collapse in" role="tabpanel" aria-labelledby="headingOne-1"> <div class="panel-body"> Collapsible Group Item #1-1 </div> </div> </div> <div class="panel panel-default"> <div class="panel-heading" role="tab" id="headingTwo-1"> <h4 class="panel-title"> <a class="collapsed" role="button" data-toggle="collapse" data-parent="#accordion1-1" href="#collapseTwo-1" aria-expanded="false" aria-controls="collapseTwo"> Collapsible Group Item #2-1 </a> </h4> </div> <div id="collapseTwo-1" class="panel-collapse collapse" role="tabpanel" aria-labelledby="headingTwo-1"> <div class="panel-body"> <div class="panel-group" id="accordion1-1-2" role="tablist" aria-multiselectable="true"> <div class="panel panel-default"> <div class="panel-heading" role="tab" id="headingOne-1-2"> <h4 class="panel-title"> <a role="button" data-toggle="collapse" data-parent="#accordion1-1-2" href="#collapseOne-1-2" aria-expanded="true" aria-controls="collapseOne"> Collapsible Group Item #1-1-2 </a> </h4> </div> <div id="collapseOne-1-2" class="panel-collapse collapse in" role="tabpanel" aria-labelledby="headingOne-1-2"> <div class="panel-body"> Collapsible Group Item #1-1-2 </div> </div> </div> <div class="panel panel-default"> <div class="panel-heading" role="tab" id="headingTwo-1-2"> <h4 class="panel-title"> <a class="collapsed" role="button" data-toggle="collapse" data-parent="#accordion1-1-2" href="#collapseTwo-1-2" aria-expanded="false" aria-controls="collapseTwo"> Collapsible Group Item #2-1-2 </a> </h4> </div> <div id="collapseTwo-1-2" class="panel-collapse collapse" role="tabpanel" aria-labelledby="headingTwo-1-2"> <div class="panel-body"> Collapsible Group Item #2-1-2 </div> </div> </div> <div class="panel panel-default"> <div class="panel-heading" role="tab" id="headingThree-1-2"> <h4 class="panel-title"> <a class="collapsed" role="button" data-toggle="collapse" data-parent="#accordion1-1-2" href="#collapseThree-1-2" aria-expanded="false" aria-controls="collapseThree-1-2"> Collapsible Group Item #3-1-2 </a> </h4> </div> <div id="collapseThree-1-2" class="panel-collapse collapse" role="tabpanel" aria-labelledby="headingThree-1-2"> <div class="panel-body"> Collapsible Group Item #3-1-2 </div> </div> </div> </div> </div> </div> </div> <div class="panel panel-default"> <div class="panel-heading" role="tab" id="headingThree-1"> <h4 class="panel-title"> <a class="collapsed" role="button" data-toggle="collapse" data-parent="#accordion1-1" href="#collapseThree-1" aria-expanded="false" aria-controls="collapseThree-1"> Collapsible Group Item #3-1 </a> </h4> </div> <div id="collapseThree-1" class="panel-collapse collapse" role="tabpanel" aria-labelledby="headingThree-1"> <div class="panel-body"> Collapsible Group Item #3-1 </div> </div> </div> </div> </div> </div> </div> <div class="panel panel-default"> <div class="panel-heading" role="tab" id="headingTwo"> <h4 class="panel-title"> <a class="collapsed" role="button" data-toggle="collapse" data-parent="#accordion" href="#collapseTwo" aria-expanded="false" aria-controls="collapseTwo"> Collapsible Group Item #2 </a> </h4> </div> <div id="collapseTwo" class="panel-collapse collapse" role="tabpanel" aria-labelledby="headingTwo"> <div class="panel-body"> Collapsible Group Item #2 </div> </div> </div> <div class="panel panel-default"> <div class="panel-heading" role="tab" id="headingThree"> <h4 class="panel-title"> <a class="collapsed" role="button" data-toggle="collapse" data-parent="#accordion" href="#collapseThree" aria-expanded="false" aria-controls="collapseThree"> Collapsible Group Item #3 </a> </h4> </div> <div id="collapseThree" class="panel-collapse collapse" role="tabpanel" aria-labelledby="headingThree"> <div class="panel-body"> Collapsible Group Item #3 </div> </div> </div> </div>

Answer 2

嘗試使用shown.bs.collapse代替。 http://www.tutorialspoint.com/bootstrap/bootstrap_collapse_plugin.htm
部分The following table lists a few events that can be used with the collapse functionality.

Answer 3

你可以試試下面的代碼 -

$('.accordion-toggle').click(function(){
       $(this).parent()
               .find("i.indicator")
               .toggleClass('fa-caret-down fa-caret-up');
  });