折叠和展开所有Bootstrap 3手风琴

Question

我有一段编程代码，它可以在以下情况下工作： 当我点击折叠或展开全部时，它可以改变按钮的文本，从“折叠全部”变为“展开全部”。唯一的问题是：当我通过点击标题打开或关闭所有面板时，按钮的文本也应该随之更改。

我希望我已经清楚地表达了我的问题。

在这个例子中，我没有包含Jquery和bootstrap外部文件。但你可以在以下链接中找到示例。 jsfiddle example here. Jquery

     $('.expand-all').click(function(){
     var $this = $(this);
     $this.toggleClass('collapse-all');
     if($this.hasClass('collapse-all')){
     $this.text(' Expand All');
     $('.panel-collapse.in')
     .collapse('hide');
     } 
     else {
     $this.text('Collapse All');
     $('.panel-collapse:not(".in")')
     .collapse('show');
     }
     });

HTML

 <div class="container">
                    <!-- <a href="#" class="btn btn-default openall">open all</a> <a href="#" class="btn btn-default closeall">close all</a>--><a href="#" class="btn btn-default expand-all">Collapse All</a>
                    <hr>
                    <div class="panel-group" id="accordion">
                        <div class="panel panel-default">
                            <div class="panel-heading" data-toggle="collapse" data-parent="#accordion1" href="#collapseOne">
                                <h4 class="panel-title">
                                    <a class="" >
                                        Collapsible Group Item #1
                                    </a>
                                </h4>
                            </div>
                            <div id="collapseOne" class="panel-collapse collapse in">
                                <div class="panel-body">
                                    ONe
                                </div>
                            </div>
                        </div>
                        <div class="panel panel-default">
                            <div class="panel-heading">
                                <h4 class="panel-title">
                                    <a class="" data-toggle="collapse" data-parent="#accordion1" href="#collapseTwo">
                                        Collapsible Group Item #2
                                    </a>
                                </h4>
                            </div>
                            <div id="collapseTwo" class="panel-collapse collapse in">
                                <div class="panel-body">
                                    Two 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">
                                <h4 class="panel-title">
                                    <a class="" data-toggle="collapse" data-parent="#accordion1" href="#collapseThree">
                                        Collapsible Group Item #3
                                    </a>
                                </h4>
                            </div>
                            <div id="collapseThree" class="panel-collapse collapse in">
                                <div class="panel-body">
                                    Three 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>

- user5295866

Answer 1

这将解决你的问题

$(".panel-heading a").click(function(){
    setTimeout(function(){
        if($(".collapsed").length == $(".panel-heading").length){
            $(".btn-default").text(' Expand All');
          if(!$('.expand-all').hasClass('collapse-all')){
               $('.expand-all').addClass('collapse-all')
           }
        }else{
            $(".btn-default").text('Collapse All');
        }
    },100)    
})

这里是jsfiddle http://jsfiddle.net/26hu7o5y/4/

- Shailendra Sharma

---

谢谢您的快速回答。但问题现在是，当它展开时，我需要点击两次才能使其展开。即使按钮显示全部展开。同样，当我手动打开所有面板（不点击按钮2次）时，我需要点击按钮两次。 - user5295866

这里是修复后的代码 http://jsfiddle.net/26hu7o5y/4/，请检查并告诉我是否正确。 - Shailendra Sharma

Answer 2

这个怎么样 this？

代码：

$('.expand-all').click(function(){
    var $this = $(this);
    if($this.hasClass('collapse-all')){
        $this.text(' Expand All');
        $('.panel-collapse.in').collapse('hide');
        $this.removeClass('collapse-all');
    } else {
        $this.text('Collapse All');
        $('.panel-collapse:not(".in")').collapse('show');
        $this.addClass('collapse-all');
    }
});

$('#accordion').on('show.bs.collapse hide.bs.collapse', function (obj) {
    var $this = $(this);
    var $expand = $('.expand-all');
    if(obj.type=="show"){
        $expand.text('Collapse All').addClass('collapse-all');
    }
    else{
        if($('.collapse.in').not(obj.target).length == 0){
            $expand.text('Expand All').removeClass('collapse-all');
        }
    }
});

同时将 collapse-all 类添加到按钮中

<a href="#" class="btn btn-default expand-all collapse-all">Collapse All</a>

- Cerlin