Javascriptを使用してブートストラップアコーディオンパネルを開く

Question

私は、動的にパネルを追加したいブートストラップを使ってアコーディオンを作っています。私はその部分が働いている。これはfiddle

私が正しく場でパネルやアコーディオン機能を追加することができます参照してください（あなたが1枚のパネルをクリックしたときに、それが崩壊してもは、以前に開かれたパネル閉じ）私は、追加の機能を追加したいと思い

を新しいパネルを追加すると、expandLast（）関数は最後に追加されたパネルを自動的に開きます（結果として、以前に開いたパネルを閉じる必要があります）。しかし、それはそうしないだけでなく、アコーディオンの機能性も壊します。すべてのパネルが再びクリックされない限り、開いたままになります。以下のコードを参照してください：

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(); 
} 

何が原因なのでしょうか？ -Thanks

Answer 1

コンテナとアンカータグを含むパネルを作成して適切なパネル構造にするために、JavaScriptをリファクタリングしました。必要に応じて変更することができます。

あなたは試してみたいことが主な部分は、以下のようなものを使用して、新しいパネルをトリガされます。

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

ここで働い例です：

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>