如何在 Bootstrap 的頁面刷新時保持當前 Accordion 處於活動狀態

Question

我有以下手風琴代碼。 代碼工作正常。 我想在頁面刷新時保持選定的選項卡處於活動狀態。 但是我添加的 javascript 不起作用。 我不知道確切的問題是什么。

<div class="accordion" id="accordionExample">
  <div class="card">
    <div class="card-header" id="headingOne">
      <h2 class="mb-0">
        <button class="btn btn-link" type="button" data-toggle="collapse" data-target="#collapseOne" aria-expanded="false" aria-controls="collapseOne">
          Collapsible Group Item #1
        </button>
      </h2>
    </div>

    <div id="collapseOne" class="collapse show" aria-labelledby="headingOne" data-parent="#accordionExample">
      <div class="card-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="card">
    <div class="card-header" id="headingTwo">
      <h2 class="mb-0">
        <button class="btn btn-link collapsed" type="button" data-toggle="collapse" data-target="#collapseTwo" aria-expanded="false" aria-controls="collapseTwo">
          Collapsible Group Item #2
        </button>
      </h2>
    </div>
    <div id="collapseTwo" class="collapse" aria-labelledby="headingTwo" data-parent="#accordionExample">
      <div class="card-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="card">
    <div class="card-header" id="headingThree">
      <h2 class="mb-0">
        <button class="btn btn-link collapsed" type="button" data-toggle="collapse" data-target="#collapseThree" aria-expanded="false" aria-controls="collapseThree">
          Collapsible Group Item #3
        </button>
      </h2>
    </div>
    <div id="collapseThree" class="collapse" aria-labelledby="headingThree" data-parent="#accordionExample">
      <div class="card-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>

Javascript

<script type="text/javascript">
$(document).ready(function(){
    $('button[data-toggle="collapse"]').on('shown.bs.collapse', function(e) {
        localStorage.setItem('activeTab', $(e.target).attr('data-target'));
    });
    var activeTab = localStorage.getItem('activeTab');
    if(activeTab){
        $('#accordionExample button[data-target="' + activeTab + '"]').collapse('show');
    }
});
</script>

Answer 1

首先，將ID（要顯示的div）添加到會話中。 然后，在重新加載后，您就可以獲取會話。 並通過js顯示當前div。 這是我執行此操作的代碼。

$(document).ready(function() {
  // Get saved data from sessionStorage
  let selectedCollapse = sessionStorage.getItem('selectedCollapse');
  if(selectedCollapse != null) {
    $('.accordion .collapse').removeClass('show');
    $(selectedCollapse).addClass('show');
  }
  //To set, which one will be opened
  $('.accordion .btn-link').on('click', function(){ 
    let target = $(this).data('target');
    //Save data to sessionStorage
    sessionStorage.setItem('selectedCollapse', target);
  });
});

請注意，我看到了您的代碼。 我認為您使用了bootstrap和jquery。 您必須至少需要jquery才能執行avobe動作。

我不知道這是正確的方法與否。 但是它將以某種方式工作。

Answer 2

這是一個非常簡單的方法：

$("#").load(location.href + " #");

始終在第二個#符號之前留出空格，否則上面的代碼將返回整個頁面。