Bootstrap 手风琴防止在 asp.net 中回发时崩溃

Question

我有一个引导手风琴，我尝试在回发中重新打开最后打开的窗格，就像有人单击我页面上的保存按钮一样。我找到了这个解决方案：Retain Twitter Bootstrap Collapse state on Page refresh/Navigation

但我无法对此发表评论，因为我作为用户没有足够的积分。

由于某种原因，我无法使该功能正常工作：

//when a group is shown, save it as the active accordion group
$("#applicant-accordion").bind('shown', function () {
    var active = $("#applicant-accordion .in").attr('id');
    $.cookie('activeAccordionGroup', active)
});

我正在尝试在 FireBug 中对其进行测试，但我从来没有达到 var active 的要求。它停在 $("#applicant-accordion).bind 行。我尝试将 .bind 更改为 .on，因为我的 jQuery 是 1.7.2 版

我很茫然，希望您能指导我找到解决方案。我在 ASP.NET 中构建它。

<script src="../Scripts/jquery-1.7.2.js" type="text/javascript"></script>
<script src="../Scripts/bootstrap/js/bootstrap.js" type="text/javascript" />
<link href="../Scripts/bootstrap/css/bootstrap.min.css" rel="stylesheet" type="text/css" />
<script src="https://raw.github.com/carhartl/jquery-cookie/master/jquery.cookie.js" />

<script type="text/javascript">
    $(document).ready(function () {
        var last = $.cookie('activeAccordionGroup');
        if (last != null) {
            //remove default collapse settings
            $("#applicant-accordion .panel-collapse").removeClass('in');
            //show the account_last visible group
            $("#" + last).addClass("in");
        }
    });

    //when a group is shown, save it as the active accordion group
    $("#applicant-accordion").on('shown', function () {
        var active = $("#applicant-accordion .in").attr('id');
        $.cookie('activeAccordionGroup', active)
    });

</script>

    <div class="accordion" id="applicant-accordion">
        <div class="accordion-group">
            <div class="accordion-heading">
                <a class="btn accordion-toggle" data-toggle="collapse" data-parent="#applicant-accordion" href="#uInfo">Applicant information</a>
            </div>
            <div id="uInfo" class="accordion-body collapse in">
                <div class="accordion-inner">
                </div>
            </div>
        </div>

        <asp:Panel Visible="false" runat="server" ID="assistancePanel">
            <div class="accordion-group">
                <div class="accordion-heading">
                    <a class="btn accordion-toggle" data-toggle="collapse" data-parent="#applicant-accordion" href="#meetgreet">Accommodation and Meet & Greet information</a>
                </div>
                <div id="meetgreet" class="accordion-body collapse">
                    <div class="accordion-inner">
                    </div>
                </div>
            </div>
        </asp:Panel>

        <div class="accordion-group">
            <div class="accordion-heading">
                <a class="btn accordion-toggle" data-toggle="collapse" data-parent="#applicant-accordion" href="#application">Application, documents & options</a>
            </div>
            <div id="application" class="accordion-body collapse">
                <div class="accordion-inner">
                </div>
            </div>
        </div>

        <div class="accordion-group">
            <div class="accordion-heading">
                <a class="btn accordion-toggle" data-toggle="collapse" data-parent="#applicant-accordion" href="#comments">Comments</a>
            </div>
            <div id="comments" class="accordion-body collapse">
                <div class="accordion-inner">
                </div>
            </div>
        </div>

        <div class="accordion-group">
            <div class="accordion-heading">
                <a class="btn accordion-toggle" data-toggle="collapse" data-parent="#applicant-accordion" href="#changelog">Changelog</a>
            </div>
            <div id="changelog" class="accordion-body collapse">
                <div class="accordion-inner" runat="server" id="changelogItems">
                </div>
            </div>
        </div>
    </div>

Answer 1

只是为了发布我的解决方案：

添加了一个隐藏字段：

<asp:HiddenField ID="hfAccordionIndex" runat="server" />

以及页面底部的 JavaScript 以确保 DOM 具有元素：

<script type="text/javascript">
    $(document).ready(function () {
        var last = $('#<%= hfAccordionIndex.ClientID %>').val();
        if (last != null && last != "") {
            //remove default collapse settings
            $("#applicant-accordion .collapse").removeClass('in');
            //show the account_last visible group
            $("#" + last).collapse("show");
        }
    });

    //when a group is shown, save it as the active accordion group
    $("#applicant-accordion").on('shown', function () {
        var active = $("#applicant-accordion .in").attr('id');
        $('#<%= hfAccordionIndex.ClientID %>').val(active);
    });
</script>

Answer 2

一般来说，只要您想在 ASP.NET 中回发后保留一个值，就有一种通用方法。

将值存储在 ASP.NET 隐藏字段中。在您的情况下，将以下 active 变量的值存储在隐藏字段中。

 var active = $("#applicant-accordion .in").attr('id');

由于 ASP.NET 维护的视图状态，在回发后，隐藏字段将保留该值。然后，您可以在页面加载时使用此值来设置手风琴。

$(document).ready(function () {
        var last = // Get value from the hidden field
        if (last != null) {
            // Set the accordin values.
        }
    });

Answer 3

**更新了使手风琴在当前选项卡处于活动状态时可以运行的代码。 **

<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 data-toggle="collapse" data-parent="#accordion" href="#collapseOne" aria-expanded="true" aria-controls="collapseOne">Header 1 </a></h4>
    </div>
    <div id="collapseOne" class="panel-collapse collapse in" role="tabpanel" aria-labelledby="headingOne">
      <div class="panel-body">Content 1</div>
    </div>
  </div>
  <div class="panel panel-default">
    <div class="panel-heading" role="tab" id="headingTwo">
      <h4 class="panel-title"><a class="collapsed" data-toggle="collapse" data-parent="#accordion" href="#collapseTwo" aria-expanded="false" aria-controls="collapseTwo">Header 2 </a></h4>
    </div>
    <div id="collapseTwo" class="panel-collapse collapse" role="tabpanel" aria-labelledby="headingTwo">
      <div class="panel-body">Content 2</div>
    </div>
  </div>

  <div class="panel panel-default">
    <div class="panel-heading" role="tab" id="headingThree">
      <h4 class="panel-title"><a class="collapsed" data-toggle="collapse" data-parent="#accordion" href="#collapseThree" aria-expanded="false" aria-controls="collapseThree">Header 3 </a></h4>
    </div>
    <div id="collapseThree" class="panel-collapse collapse" role="tabpanel" aria-labelledby="headingThree">
      <div class="panel-body">Content 3</div>
    </div>
  </div>

  <div class="form-group">
    <hr />
    <asp:Button ID="Button1" Text="Submit" runat="server" CssClass="btn btn-primary" />
    <asp:HiddenField ID="PaneName" runat="server" />
  </div>
</div>


<script type="text/javascript">
  $(function() {
    var paneName = $("[id*=PaneName]").val() != "" ? $("[id*=PaneName]").val() : "collapseOne";
    $("#accordion .collapse").removeClass("in");
    $("#" + paneName).addClass("in");
    $(".panel-heading a").click(function() {
      $("[id*=PaneName]").val($(this).attr("href").replace("#", ""));
    });
  });

</script>