jQuery show.bs.collapse 嵌套 Bootstrap 可折叠按钮的事件在比预期更多的按钮上触发

Question

我正在使用 Bootstrap 制作可折叠的嵌套 divs/buttons。我想在展开时折叠 div 的所有兄弟姐妹，并在折叠时折叠 div 的所有子级（以便展开的 div 仅来自一条路径根 div 之一到内部 div).

我选择使用 jQuery 而不是使用 Bootstrap 的手风琴 - 只是按钮与相关联的 divs.

所以我尝试select所有可以扩展和使用show.bs.collapse事件的div，这样我就知道扩展了哪个div。

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

如果我的树是这样的：

1 - 扩展
- 2 - 扩展
  - 3 - 崩溃
- 4 - 崩溃
5 - 崩溃
6 - 崩溃

我展开3，我没有得到：

但是：

3
2
1

为什么 show.bs.collapse 应用于 divs 1 和 2？

Answer 1

请尝试使用 shown.bs.collapse。 http://www.tutorialspoint.com/bootstrap/bootstrap_collapse_plugin.htm
第 The following table lists a few events that can be used with the collapse functionality.

节

Answer 2

尝试

$(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 3

你可以试试下面的代码 -

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

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