Foundation 6手风琴如何实现“全部折叠/全部展开”并滚动到顶部？

Question

我想在Foundation 6的手风琴中实现“全部展开/全部折叠”链接。 参考此codepen。

$(document).ready(function() {

  $(".toggle-accordion").on("click", function() {
    var accordionId = $(this).attr("accordion-id"),
      numPanelOpen = $(accordionId + ' .collapse.in').length;
    
    $(this).toggleClass("active");

    if (numPanelOpen == 0) {
      openAllPanels(accordionId);
    } else {
      closeAllPanels(accordionId);
    }
  })

  openAllPanels = function(aId) {
    console.log("setAllPanelOpen");
    $(aId + ' .panel-collapse:not(".in")').collapse('show');
  }
  closeAllPanels = function(aId) {
    console.log("setAllPanelclose");
    $(aId + ' .panel-collapse.in').collapse('hide');
  }
     
});

body {
  color: #6a6c6f;
  background-color: #f1f3f6;
  margin-top: 30px;
}

.container {
  max-width: 960px;
}

.panel-default>.panel-heading {
  color: #333;
  background-color: #fff;
  border-color: #e4e5e7;
  padding: 0;
  -webkit-user-select: none;
  -moz-user-select: none;
  -ms-user-select: none;
  user-select: none;
}

.panel-default>.panel-heading a {
  display: block;
  padding: 10px 15px;
}

.panel-default>.panel-heading a:after {
  content: "";
  position: relative;
  top: 1px;
  display: inline-block;
  font-family: 'Glyphicons Halflings';
  font-style: normal;
  font-weight: 400;
  line-height: 1;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  float: right;
  transition: transform .25s linear;
  -webkit-transition: -webkit-transform .25s linear;
}

.panel-default>.panel-heading a[aria-expanded="true"] {
  background-color: #eee;
}

.panel-default>.panel-heading a[aria-expanded="true"]:after {
  content: "\2212";
  -webkit-transform: rotate(180deg);
  transform: rotate(180deg);
}

.panel-default>.panel-heading a[aria-expanded="false"]:after {
  content: "\002b";
  -webkit-transform: rotate(90deg);
  transform: rotate(90deg);
}

.accordion-option {
  width: 100%;
  float: left;
  clear: both;
  margin: 15px 0;
}

.accordion-option .title {
  font-size: 20px;
  font-weight: bold;
  float: left;
  padding: 0;
  margin: 0;
}

.accordion-option .toggle-accordion {
  float: right;
  font-size: 16px;
  color: #6a6c6f;
}

.accordion-option .toggle-accordion:before {
  content: "Expand All";
}

.accordion-option .toggle-accordion.active:before {
  content: "Collapse All";
}

<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>
<script src="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.6/js/bootstrap.min.js"></script>
<link href="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.6/css/bootstrap.min.css" rel="stylesheet"/>
<div class="container">
  <div class="accordion-option">
    <h3 class="title">Lorem Ipsum</h3>
    <a href="javascript:void(0)" class="toggle-accordion active" accordion-id="#accordion"></a>
  </div>
  <div class="clearfix"></div>
  <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">
          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="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="true" aria-controls="collapseTwo">
          Collapsible Group Item #2
        </a>
      </h4>
      </div>
      <div id="collapseTwo" class="panel-collapse collapse in" role="tabpanel" aria-labelledby="headingTwo">
        <div class="panel-body">
          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="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="true" aria-controls="collapseThree">
          Collapsible Group Item #3
        </a>
      </h4>
      </div>
      <div id="collapseThree" class="panel-collapse collapse in" role="tabpanel" aria-labelledby="headingThree">
        <div class="panel-body">
          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>
</div>

（将“展开全部”和“折叠全部”链接分开也可以。）

还需要一种实现打开/活动手风琴时滚动到顶部的方法。

任何帮助都将不胜感激。

谢谢。

- Hussain S M

Answer 1

在初始化手风琴之后，您可以使用以下函数实现其功能：

// open all panels
$('#yourAccordion').foundation('down', $('#yourAccordion .accordion-content'));
// close all panels
$('#yourAccordion').foundation('up', $('#yourAccordion .accordion-content'));

现在您只需要一个点击处理程序和一个按钮/链接来单击。

// HTML
<button id="#close" type="button">Collapse all</button>
<button id="#open" type="button">Expand all</button>

如果您希望使用链接，请不要忘记在点击处理程序中添加preventDefault（）和return。

// js
$('#close').on('click', function () {
    $('#yourAccordion').foundation('up', $('#yourAccordion .accordion-content'));
})


$('#open').on('click', function () {
    $('#yourAccordion').foundation('down', $('#yourAccordion .accordion-content'));
})

文档: http://foundation.zurb.com/sites/docs/accordion.html

这个链接是关于一个名为“手风琴”的组件的文档。它可以帮助你在网页上创建可折叠的内容区域，以节省空间并提高用户体验。详细了解如何使用这个组件，请访问上述链接。保留HTML标记。

- Tom M