PROSAGA码农传奇-jQuery-选中某个复选框时，将显示输入文本。并且在取消选中时将被隐藏

<div class =“post-text”itemprop =“text”>
  <P>
    我猜问题就在于
     <code>
      input
    </code>
     与id
     <code>
      #specify
    </code>
     选择“其他”时未显示。
  </p>
  <P>
    我添加了这段代码：
  </p>
   <pre>
    <code>
      $("#specify").attr("placeholder","Please specify").show();
$("#solutions").hide();

</code>
  </pre>
  <P>
    这是你想要的吗？
  </p>
  <P>
    的<strong>
      演示
    </强>
  </p>
  <P>
  </p>
  <div class =“snippet”data-lang =“js”data-hide =“true”data-console =“true”data-babel =“false”>
    <div class =“snippet-code snippet-Currently-hidden”>
       <pre class="snippet-code-js lang-js prettyprint-override">
        <code>
          $(document).ready(displayCheckbox);

CountSelectedCB = [];

function displayCheckbox() {???????
  $("input:checkbox").change(function() {?????????????????
    selectedCB = [];????????
    notSelectedCB = [];
    selectedValue = $(this).attr("value");????????????????
    CountSelectedCB.length = 0;

if (selectedValue === "Others" && $(this).is(":checked")) {
      uncheckAllCheckBox();
      $(this).prop('checked', true);
      CountSelectedCB.push(selectedValue);
      $("#specify").attr("placeholder","Please specify").show();
      $("#solutions").hide();
    } else {
      $("input:checkbox").each(function() {
        if ($(this).attr("value") === "Others")
          $(this).prop('checked', false);

if ($(this).is(":checked")) {
          CountSelectedCB.push($(this).attr("value"));
        }
      });
      $("#specify").hide();
      $("#solutions").show();
    }????????????????????????
    $('input[name=solutions]').val(CountSelectedCB).blur();????
  });
}

function uncheckAllCheckBox() {
  $("input:checkbox").each(function() {
    $(this).prop('checked', false);
    CountSelectedCB.length = 0;
  });
}

$(document).ready(displayRadiobox);

CountSelectedRB = [];

$('#solutions, #existing').bind('keyup blur', function() {????????????
  $('#summary').val('You are looking for solutions in ' + ??????????????????????????????$('#solutions').val() + ??????????????????????????????(' \n') + ?????????????????????????????'Are you using an existing customer? ' + ??????????????????????????????$('#existing').val());
});
        </code>
      </pre>
       <pre class="snippet-code-html lang-html prettyprint-override">
        <code>
          <script src="https://cdnjs.cloudflare.com/ajax/libs/jquery/3.3.1/jquery.min.js"></script>
<div> Looking for a solutions in:<br>
  <input type="checkbox" value="Heating">Heating<br>
  <input type="checkbox" value="Ac">AC<br>
  <input type="checkbox" value="Cold Chain">Cold Chain<br>
  <input type="checkbox" value="Others">Others<br>
</div>
<input name="specify" type="text" id="specify" style="display: none">
<input name="solutions" type="text" id="solutions">

<div><br>Are you an exisiting customer?<br>
  <input type="radio" value="Yes" name="radio">Yes<br>
  <input type="radio" value="No" name="radio">No
</div>

<input name="existing" type="text" id="existing">
<br><br> Summary:
<br>
<textarea type='text' id="summary"></textarea>
        </code>
      </pre>
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