没有必需属性的欧芹验证复选框，但无法验证具有

如何解决没有必需属性的欧芹验证复选框，但无法验证具有

在下面的代码中，我有一个带有 2 个选择字段的表单，当复选框选中或未选中时，根据状态显示..

在 jQuery 中，我根据“活动”的选择字段设置了 required 属性。我的复选框没有设置必需的属性，实际上我已经积极尝试在脚本中将它排除在 Parsley 版本 >2.1 的文档中，并在两种切换模式下设置 $("#SystemMessageChk").attr('required',false)，但无论我做什么它仍然验证当我选中复选框并提交表单时，复选框而不是活动选择。

有人有修复的想法吗？

$(document).ready(function() {

  $(function() {
    $("#SystemMessageChk").click(function() {
      if ($(this).is(":checked")) {
        $("#MessageSystemDIV").show();
        $("#MessageSpecificUserDIV").hide();
        $("#MessageSystemType").attr('required',true);
        $("#MessageReceipients1").attr('required',false)
        $("#SystemMessageChk").attr('required',false)
      } else {
        $("#MessageSystemDIV").hide();
        $("#MessageSpecificUserDIV").show();
        $("#MessageSystemType").attr('required',false)
        $("#MessageReceipients1").attr('required',true);
        $("#SystemMessageChk").attr('required',false)
      }
    });
  });

  $('#MessageSystemType').selectpicker();
  $('.js-example-basic-multiple').select2({
    placeholder: 'Vælg modtager(e)...'
  });

});

<link href="https://cdn.jsdelivr.net/npm/bootstrap@4.6.0/dist/css/bootstrap.min.css" rel="stylesheet" />
<script src="https://cdnjs.cloudflare.com/ajax/libs/jquery/3.3.1/jquery.min.js"></script>
<script src="https://code.jquery.com/jquery-3.5.1.slim.min.js" integrity="sha384-DfXdz2htPH0lsSSs5nCTpuj/zy4C+OGpamoFVy38MVBnE+IbbVYUew+OrCXaRkfj" crossorigin="anonymous"></script>
<script src="https://cdn.jsdelivr.net/npm/bootstrap@4.6.0/dist/js/bootstrap.bundle.min.js" integrity="sha384-Piv4xVNRyMGpqkS2by6br4gNJ7DXjqk09RmUpJ8jgGtD7zP9yug3goQfGII0yAns" crossorigin="anonymous"></script>
<link rel="stylesheet" href="https://use.fontawesome.com/releases/v5.8.2/css/all.css" integrity="sha384-oS3vJWv+0UjzBfQzYUhtDYW+Pj2yciDJxpsK1OYPAYjqT085Qq/1cq5FLXAZQ7Ay" crossorigin="anonymous">

<script src="https://cdn.jsdelivr.net/npm/select2@4.1.0-rc.0/dist/js/select2.min.js"></script>
<link href="https://cdn.jsdelivr.net/npm/select2@4.1.0-rc.0/dist/css/select2.min.css" rel="stylesheet" />
<link href="https://cdn.jsdelivr.net/gh/gitbrent/bootstrap4-toggle@3.6.1/css/bootstrap4-toggle.min.css" rel="stylesheet">
<script src="https://cdn.jsdelivr.net/gh/gitbrent/bootstrap4-toggle@3.6.1/js/bootstrap4-toggle.min.js"></script>
<link rel="stylesheet" href="https://cdn.jsdelivr.net/npm/bootstrap-select@1.13.14/dist/css/bootstrap-select.min.css">
<script src="https://cdn.jsdelivr.net/npm/bootstrap-select@1.13.14/dist/js/bootstrap-select.min.js"></script>
<script src="https://cdnjs.cloudflare.com/ajax/libs/parsley.js/2.9.2/parsley.min.js"></script>

<form id="MessageCenterForm" name="MessageCenterForm" action="send_message_messagecenter.asp" data-parsley-validate="" data-parsley-excluded="input[type=button],input[type=submit],input[type=reset],input[type=hidden],input[type=checkBox],[disabled],:hidden"
  class="demo-form" type="post">
  <div class="form-group">
    <label for="MessageReceipients" class="col-form-label">Receiver(s):</label>

    <div class="form-check">
      <label class="form-check-label-sm" for="SystemMessageChk">
                System message
            </label>
      <input type="checkBox" id="SystemMessageChk" name="SystemMessageChk" value="yes" data-parsley-excluded="true">
    </div>


    <div id="MessageSpecificUserDIV">

      <select class="form-control js-example-basic-multiple" id="MessageReceipients1" name="MessageReceipients1" placeholder="Vælg modtagere" multiple style="width: 100%" data-parsley-errors-container="#MessageReceipients-errors" required>
        <option value=""></option>
        <optgroup label="1 - Some Group">
          <option value="1">Some Name</option>
        </optgroup>
      </select>

    </div>

    <div id="MessageReceipients-errors"></div>

    <div id="MessageSystemDIV" style="display: none;">
      <select id="MessageSystemType" id="MessageSystemType" class="form-control form-control-sm" data-show-content="true">
        <option value="">Choose type..</option>
        <option value="" data-content="&nbsp;<i class='fas fa-exclamation text-info'></i>&nbsp; information"></option>
        <option value="" data-content="<i class='fas fa-check text-success'></i> Solved"></option>
        <option value="" data-content="<i class='fas fa-exclamation-triangle text-warning'></i> Warning"></option>
      </select>
    </div>
    <div class="form-group">
      <label for="message-text" class="col-form-label">Message:</label>
      <textarea class="maxLength form-control" id="message-text" maxLength="250" required></textarea>
    </div>

    <button type="submit" form="MessageCenterForm" class="btn btn-primary">Send</button>

解决方法

解决方案是删除 $("#SystemMessageChk").attr('required',false) 并添加 $("#MessageReceipients-errors").html(""); 到第一个切换，换句话说就是清除错误文本。

工作代码是：

$( document ).ready(function() {

    $(function () {
            $("#SystemMessageChk").click(function () {
                if ($(this).is(":checked")) {
                    $("#MessageSystemDIV").show();
                    $("#MessageSpecificUserDIV").hide();
                    $("#MessageSystemType").attr('required',true);
                    $("#MessageReceipients1").attr('required',false);
                    $("#MessageReceipients-errors").html("");                    
                } else {
                    $("#MessageSystemDIV").hide();
                    $("#MessageSpecificUserDIV").show();
                    $("#MessageSystemType").attr('required',false);
                    $("#MessageReceipients1").attr('required',true);              
                }
            });
        });

    $('#MessageSystemType').selectpicker();
    $('.js-example-basic-multiple').select2({
        placeholder: 'Vælg modtager(e)...'
    });

});