javascript - 向Bootstrap Accordion 添加向上/向下箭头

This question already has answers here:

Bootstrap accordion with arrows

(2个答案)


上个月关闭。




我有一个Bootstrap Accordion ，我想为其添加状态箭头。

因此，箭头在折叠时将朝下，在展开时将朝上。

我当前的代码在这里(包括演示):https://jsfiddle.net/m1xj0avo/

$(function () {

    var active = true;

    $('#collapse-init').click(function () {
        if (active) {
            active = false;
            $('.panel-collapse').collapse('show');
            $('.panel-title').attr('data-toggle', '');
            $(this).text('Enable accordion behavior');
        } else {
            active = true;
            $('.panel-collapse').collapse('hide');
            $('.panel-title').attr('data-toggle', 'collapse');
            $(this).text('Disable accordion behavior');
        }
    });

    $('#accordion').on('show.bs.collapse', function () {
        if (active) $('#accordion .in').collapse('hide');
    });

});

.panel-title:hover {
     cursor: pointer;
}

<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.0.2/jquery.min.js"></script>
<link href="https://netdna.bootstrapcdn.com/font-awesome/3.2.1/css/font-awesome.min.css" rel="stylesheet"/>
<script src="https://netdna.bootstrapcdn.com/bootstrap/3.0.0/js/bootstrap.min.js"></script>
<link href="https://netdna.bootstrapcdn.com/bootstrap/3.0.0/css/bootstrap.min.css" rel="stylesheet"/>
<button id="collapse-init" class="btn btn-primary">
    Disable accordion behavior
</button>
<br/><br/>

<div class="panel-group" id="accordion">
    <!-- First Panel -->
    <div class="panel panel-default">
        <div class="panel-heading">
             <h4 class="panel-title"
                 data-toggle="collapse"
                 data-target="#collapseOne">
                 Collapsible Group Item #1
             </h4>
        </div>
        <div id="collapseOne" class="panel-collapse collapse">
            <div class="panel-body">
                Anim pariatur cliche reprehenderit,
                enim eiusmod high life accusamus terry richardson ad squid.
            </div>
        </div>
    </div>

    <!-- Second Panel -->
    <div class="panel panel-default">
        <div class="panel-heading">
             <h4 class="panel-title"
                 data-toggle="collapse"
                 data-target="#collapseTwo">
                 Collapsible Group Item #2
             </h4>
        </div>
        <div id="collapseTwo" class="panel-collapse collapse">
            <div class="panel-body">
                Anim pariatur cliche reprehenderit,
                enim eiusmod high life accusamus terry richardson ad squid.
            </div>
        </div>
    </div>

    <!-- Third Panel -->
    <div class="panel panel-default">
        <div class="panel-heading">
             <h4 class="panel-title"
                 data-toggle="collapse"
                 data-target="#collapseThree">
                 Collapsible Group Item #3
             </h4>
        </div>
        <div id="collapseThree" class="panel-collapse collapse">
            <div class="panel-body">
                Anim pariatur cliche reprehenderit,
                enim eiusmod high life accusamus terry richardson ad squid.
            </div>
        </div>
    </div>
</div>






<!-- Post Info -->
<div style='position:fixed;bottom:0;left:0;
            background:lightgray;width:100%;'>For this SO Question: <a href='http://stackoverflow.com/q/20347553/1366033'>Keep Accordions Open</a>

    <br/>Find documentation: <a href='http://getbootstrap.com/javascript/#collapse-usage'>Bootstrap Collapse Usage</a>

    <br/>Fork This Skeleton Here <a href='http://jsfiddle.net/KyleMit/kcpma/'>Bootrsap 3.0 Skeleton</a>

    <br/>
    <div>

最佳答案

有些纯CSS解决方案利用了Bootstrap的 Accordion 已经具备的一些触发器。例如，扩展的.panel-title的值为[area-expanded="true"]，我们可以将其用作CSS选择器。
考虑到这一点，您可以使用如下代码:

.panel-title {
  position: relative;
}

.panel-title::after {
  content: "\f107";
  color: #333;
  top: -2px;
  right: 0px;
  position: absolute;
  font-family: "FontAwesome"
}

.panel-title[aria-expanded="true"]::after {
  content: "\f106";
}

/*
 * Added 12-27-20 to showcase full title clickthrough
 */

.panel-heading-full.panel-heading {
  padding: 0;
}

.panel-heading-full .panel-title {
  padding: 10px 15px;
}

.panel-heading-full .panel-title::after {
  top: 10px;
  right: 15px;
}

<script src="https://ajax.googleapis.com/ajax/libs/jquery/1.11.1/jquery.min.js"></script>
<script src="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.7/js/bootstrap.min.js"></script>
<link href="https://maxcdn.bootstrapcdn.com/font-awesome/4.7.0/css/font-awesome.min.css" rel="stylesheet"/>
<link href="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.7/css/bootstrap.min.css" rel="stylesheet"/>

<div class="panel-group" id="accordion">

  <!-- First Panel -->
  <div class="panel panel-default">
    <div class="panel-heading">
      <h4 class="panel-title" data-toggle="collapse" data-target="#collapseOne">Collapsible Group Item #1</h4>
    </div>

    <div id="collapseOne" class="panel-collapse collapse">
      <div class="panel-body">
        Anim pariatur cliche reprehenderit, enim eiusmod high life accusamus terry richardson ad squid.
      </div>
    </div>
  </div>

  <!-- Second Panel -->
  <div class="panel panel-default">
    <div class="panel-heading">
      <h4 class="panel-title" data-toggle="collapse" data-target="#collapseTwo">Collapsible Group Item #2</h4>
    </div>

    <div id="collapseTwo" class="panel-collapse collapse">
      <div class="panel-body">
        Anim pariatur cliche reprehenderit, enim eiusmod high life accusamus terry richardson ad squid.
      </div>
    </div>
  </div>

  <!-- Third Panel -->
  <div class="panel panel-default">
    <div class="panel-heading panel-heading-full">
      <h4 class="panel-title" data-toggle="collapse" data-target="#collapseThree">Collapsible Group Item #3 (panel-heading-ful)</h4>
    </div>

    <div id="collapseThree" class="panel-collapse collapse">
      <div class="panel-body">
        Anim pariatur cliche reprehenderit, enim eiusmod high life accusamus terry richardson ad squid.
      </div>
    </div>
  </div>

</div>

使用Font Awesome和:after伪选择器应用插入符号。
编辑2020年12月27日:
创建了额外的CSS来显示如何通过删除填充来触发崩溃事件，方法是单击.panel-heading上的填充，而Bootstrap应用于此包装，并将其应用于.panel-title。
请参阅应用于最后可折叠项的.panel-heading-full。