Bootstrap Accordion Expand/Collapse 全部功能不正常

Question

這是打破這個的過程：

1. 單擊樂譜
2. 單擊全部展開/折疊
3. 單擊樂譜
4. 單擊全部展開/折疊
5. 再次單擊展開/折疊全部

請注意 Music Notation 不會重新打開，即使您應該能夠在函數中看到，邏輯表明所有面板都已關閉並且應該打開。 為什么？ 我究竟做錯了什么？

HTML：

<button class="btn btn-default btn-sm btn-exp" id="expandAllFormats">Expand/Collapse All</button>
<div class="panel-group checkbox-group" id="accordionFormat" role="tablist" aria-multiselectable="true">

<div class="panel panel-default">
<div class="panel-heading" role="tab">
<h4 class="panel-title">
<a id="accordionformatText" role="button" data-toggle="collapse" data-parent="#accordionFormat" href="#formatText">
<i class="fa fa-chevron-circle-right" aria-hidden="true"></i> Text
</a>
</h4>
</div>
<div id="formatText" class="panel-collapse collapse" role="tabpanel">
<div class="panel-body">ALPHA</div>
</div>
</div>

<div class="panel panel-default">
<div class="panel-heading" role="tab">
<h4 class="panel-title">
<a id="accordionformatArt" class="collapsed" role="button" data-toggle="collapse" data-parent="#accordionFormat" href="#formatArt">
<i class="fa fa-chevron-circle-right" aria-hidden="true"></i> Art
</a>
</h4>
</div>
<div id="formatArt" class="panel-collapse collapse" aria-expanded="false" role="tabpanel">
<div class="panel-body">BETA</div>
</div>
</div>

<div class="panel panel-default">
<div class="panel-heading" role="tab">
<h4 class="panel-title">
<a id="accordionformatAudio" class="collapsed" role="button" data-toggle="collapse" data-parent="#accordionFormat" href="#formatAudio">
<i class="fa fa-chevron-circle-right" aria-hidden="true"></i> Audio
</a>
</h4>
</div>
<div id="formatAudio" class="panel-collapse collapse" role="tabpanel">
<div class="panel-body">GAMMA</div>
</div>
</div>

<div class="panel panel-default">
<div class="panel-heading" role="tab">
<h4 class="panel-title">
<a id="accordionformatNotation" class="collapsed" role="button" data-toggle="collapse" data-parent="#accordionFormat" href="#formatNotation">
<i class="fa fa-chevron-circle-right" aria-hidden="true"></i> Music Notation
</a>
</h4>
</div>
<div id="formatNotation" class="panel-collapse collapse" role="tabpanel">
<div class="panel-body">DELTA</div>
</div>
</div>

<div class="panel panel-default">
<div class="panel-heading" role="tab">
<h4 class="panel-title">
<a id="accordionformatVideo" class="collapsed" role="button" data-toggle="collapse" data-parent="#accordionFormat" href="#formatVideo">
<i class="fa fa-chevron-circle-right" aria-hidden="true"></i> Video
</a>
</h4>
</div>
<div id="formatVideo" class="panel-collapse collapse" role="tabpanel">
<div class="panel-body">EPSILON</div>
</div>
</div>

<div class="panel panel-default">
<div class="panel-heading" role="tab">
<h4 class="panel-title">
<a id="accordionformatInteractive" class="collapsed" role="button" data-toggle="collapse" data-parent="#accordionFormat" href="#formatInteractive">
<i class="fa fa-chevron-circle-right" aria-hidden="true"></i> Digital Interactive
</a>
</h4>
</div>
<div id="formatInteractive" class="panel-collapse collapse" role="tabpanel">
<div class="panel-body">ZETA</div>
</div>
</div>
</div>

JS：

var toggleFormat = false;
$('#expandAllFormats').on('click', function(e) {
        e.preventDefault();
        console.log(toggleFormat);
        $("#accordionFormat .panel-collapse").each(function(index, value){
            if (toggleFormat){
                if($(this).hasClass('in')){
                    $(this).collapse('toggle');
                    console.log("This panel is open. it will be closed");
                } else {
                    console.log("This panel is closed. it will stay closed");
                }
            } else {
                if(!$(this).hasClass('in')){
                    $(this).collapse('toggle');
                    console.log("This panel is closed. it will be open");
                } else {
                    console.log("This panel is open. it will stay open");
                }
            }

        });
        toggleFormat = toggleFormat ? false : true;
    });

Answer 1

問題是所有面板的狀態都不同於任何單個面板的狀態，因為手風琴與data-parent 。 您的展開/折疊所有按鈕處理程序需要完全覆蓋正常的手風琴行為。

expand/collapse all點擊處理程序必須跟蹤最后一個狀態（expand all或 collapse all ），因為 Bootstrap Collapse 組件單獨處理每個面板的狀態（一次只打開一個）。 否則，將無法知道是打開還是關閉單獨切換的面板。

$('#expandAllFormats').on('click', function () {

   if ($(this).data("lastState") === null || $(this).data("lastState") === 0) {

        // close all
        $('.collapse.in').collapse('hide');

        // next state will be open all
        $(this).data("lastState",1);
        $(this).text("Expand All");

    }
    else {

        // initial state...
        // override accordion behavior and open all
        $('.panel-collapse').removeData('bs.collapse')
        .collapse({parent:false, toggle:false})
        .collapse('show')
        .removeData('bs.collapse')
         // restore single panel behavior
        .collapse({parent:'#accordionFormat', toggle:false});

        // next state will be close all
        $(this).data("lastState",0);
        $(this).text("Collapse All");
    }

});

http://codeply.com/go/76Hl6s49rb

OFC，另一種方法是簡單地刪除data-parent=屬性並完全禁用手風琴行為。

Answer 2

如果您有能力從存在的所有元素中刪除 data-parent 屬性data-parent="#accordionFormat"它將解決您的問題。

為什么？ 我不確定，但似乎該屬性觸發了一些與折疊功能混亂的邏輯。

 var toggleFormat = false; $('#expandAllFormats').on('click', function (e) { e.preventDefault(); console.log(toggleFormat); $("#accordionFormat .panel-collapse").each(function (index, value) { if (toggleFormat) { if ($(this).hasClass('in')) { $(this).collapse('toggle'); console.log("This panel is open. it will be closed"); } else { console.log("This panel is closed. it will stay closed"); } } else { if (!$(this).hasClass('in')) { $(this).collapse('toggle'); console.log("This panel is closed. it will be open"); } else { console.log("This panel is open. it will stay open"); } } }); toggleFormat = toggleFormat ? false : true; });

 <html> <head> <link rel="stylesheet" href="//maxcdn.bootstrapcdn.com/bootstrap/3.3.7/css/bootstrap.min.css"> </head> <body> <button class="btn btn-default btn-sm btn-exp" id="expandAllFormats">Expand/Collapse All</button> <div class="panel-group checkbox-group" id="accordionFormat" role="tablist" aria-multiselectable="true"> <div class="panel panel-default"> <div class="panel-heading" role="tab"> <h4 class="panel-title"> <a id="accordionformatText" role="button" data-toggle="collapse" href="#formatText"> <i class="fa fa-chevron-circle-right" aria-hidden="true"></i> Text </a> </h4> </div> <div id="formatText" class="panel-collapse collapse" role="tabpanel"> <div class="panel-body">ALPHA</div> </div> </div> <div class="panel panel-default"> <div class="panel-heading" role="tab"> <h4 class="panel-title"> <a id="accordionformatArt" class="collapsed" role="button" data-toggle="collapse" href="#formatArt"> <i class="fa fa-chevron-circle-right" aria-hidden="true"></i> Art </a> </h4> </div> <div id="formatArt" class="panel-collapse collapse" aria-expanded="false" role="tabpanel"> <div class="panel-body">BETA</div> </div> </div> <div class="panel panel-default"> <div class="panel-heading" role="tab"> <h4 class="panel-title"> <a id="accordionformatAudio" class="collapsed" role="button" data-toggle="collapse" href="#formatAudio"> <i class="fa fa-chevron-circle-right" aria-hidden="true"></i> Audio </a> </h4> </div> <div id="formatAudio" class="panel-collapse collapse" role="tabpanel"> <div class="panel-body">GAMMA</div> </div> </div> <div class="panel panel-default"> <div class="panel-heading" role="tab"> <h4 class="panel-title"> <a id="accordionformatNotation" class="collapsed" role="button" data-toggle="collapse" href="#formatNotation"> <i class="fa fa-chevron-circle-right" aria-hidden="true"></i> Music Notation </a> </h4> </div> <div id="formatNotation" class="panel-collapse collapse" role="tabpanel"> <div class="panel-body">DELTA</div> </div> </div> <div class="panel panel-default"> <div class="panel-heading" role="tab"> <h4 class="panel-title"> <a id="accordionformatVideo" class="collapsed" role="button" data-toggle="collapse" href="#formatVideo"> <i class="fa fa-chevron-circle-right" aria-hidden="true"></i> Video </a> </h4> </div> <div id="formatVideo" class="panel-collapse collapse" role="tabpanel"> <div class="panel-body">EPSILON</div> </div> </div> <div class="panel panel-default"> <div class="panel-heading" role="tab"> <h4 class="panel-title"> <a id="accordionformatInteractive" class="collapsed" role="button" data-toggle="collapse" href="#formatInteractive"> <i class="fa fa-chevron-circle-right" aria-hidden="true"></i> Digital Interactive </a> </h4> </div> <div id="formatInteractive" class="panel-collapse collapse" role="tabpanel"> <div class="panel-body">ZETA</div> </div> </div> </div> <script src="//ajax.googleapis.com/ajax/libs/jquery/2.2.4/jquery.min.js"></script> <script src="//maxcdn.bootstrapcdn.com/bootstrap/3.3.7/js/bootstrap.min.js"></script> </body> </html>