使用Javascript打開Bootstrap手風琴面板

Question

我正在使用Bootstrap制作手風琴，我想向其中動態添加面板。 我有那部分工作。 看到這個小提琴

我可以動態添加面板，並且手風琴可以正常運行（單擊一個面板時，它會折疊，並且還會關閉以前打開的面板 ）

我想添加一個附加功能，即在添加新面板時，expandLast（）函數會自動打開最后添加的面板（結果應關閉先前打開的面板）。 但是它不僅不能做到這一點，而且還破壞了手風琴的功能。 除非再次單擊，否則所有面板均保持打開狀態。 參見下面的代碼：

var count = 1;

$('#myBtn').click(function() {

  var parent = document.getElementById("accordion");
  var wrapper = document.createElement('div');
  wrapper.className = "panel panel-default";


  var title = document.createElement('div');
  title.className = "panel-heading";
  title.setAttribute("id", "cartItemTitle");
  title.setAttribute("data-toggle", "collapse");
  title.setAttribute("data-target", "#collapsible-" + count);
  title.setAttribute("data-parent", "#accordion");
  title.innerHTML = "panel: " + count;

  var body = document.createElement('div');
  body.setAttribute("id", "collapsible-" + count);
  body.className = "panel-collapse collapse";
  //body.className="panel-body";
  body.innerHTML = "Lorem ipsum dolor sit amet, habeo novum possim in duo, solet aperiam postulant at eam. Te dolore ullamcorper vim. Semper officiis ad vix. Maluisset aliquando consectetuer ne pro. Mollis docendi at mei, errem dolorem voluptaria sed ea.";

  wrapper.appendChild(title);
  wrapper.appendChild(body);

  parent.appendChild(wrapper);

  count = count + 1;

  expandLast();
});

function expandLast()
{
  var allItems=document.getElementsByClassName("collapse");
  var lastItem=allItems[allItems.length-1];
  var lastItemSelector="#"+lastItem.getAttribute("id");
  $(lastItemSelector).collapse();
}

知道是什么原因造成的嗎？ -謝謝

Answer 1

我對創建面板的JavaScript進行了重構，以包含容器和錨標簽，以使其具有正確的面板結構。 您可以根據需要進行修改。

您可能想嘗試的主要部分是通過使用以下類似內容來觸發新面板：

$parent.find('> div:last-of-type a').trigger('click');

這是一個工作示例：

 var count = 1; $('#myBtn').click(function() { var $parent = $('#accordion'); var $wrapper = $('<div>', { class: 'panel panel-default' }); var $panelHeading = $('<div>', { id: 'heading' + count, class: 'panel-heading', role: 'tab' }); var $titleLink = $('<h4>', { class: 'panel-title' }).append($('<a>', { role: 'button', class: 'collapsed', 'data-toggle': 'collapse', 'data-parent': '#accordion', 'href': '#collapsible-' + count, 'aria-expanded': 'true', 'aria-controls': 'collapsible-' + count }).text('New Panel ' + count)); var $panelBody = $('<div class="panel-body">') .text("Lorem ipsum dolor sit amet, habeo novum possim in duo, solet aperiam postulant at eam. Te dolore ullamcorper vim. Semper officiis ad vix. Maluisset aliquando consectetuer ne pro. Mollis docendi at mei, errem dolorem voluptaria sed ea."); var $panelContainer = $('<div>', { id: 'collapsible-'+count, class: 'panel-collapse collapse', role: 'tabpanel', 'aria-labelledby': 'heading'+count }); $wrapper.append($panelHeading.append($titleLink)); $wrapper.append($panelContainer.append($panelBody)); $parent.append($wrapper); $parent.find('> div:last-of-type a').trigger('click'); count++; }); 

 <link href="https://cdnjs.cloudflare.com/ajax/libs/twitter-bootstrap/3.3.7/css/bootstrap.min.css" rel="stylesheet"/> <script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script> <script src="https://cdnjs.cloudflare.com/ajax/libs/twitter-bootstrap/3.3.7/js/bootstrap.min.js"></script> <a id="myBtn" class="btn btn-primary">Add Item</a> <hr> <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="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"> 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="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"> 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>