javascript - 在选择时显示/隐藏范围 ID

Question

我想在从选择选项值中选择ms时显示复选框，复选框在span的idboxcheck中指定。如果是其他则显示带有 span id radiocheck

的单选按钮

这是我正在尝试的方法，但不起作用:

$('#Typeselect').change(function() {
  var value = this.value;

  if (selectedValue === 'ms') {
    $('#radiocheck').show();
    $('#boxcheck').hide();
  } else {
    $('#radiocheck').hide();
    $('#boxcheck').show();
  }
});

<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>
<div class="col-md-4 operations">
  <span style="display:none" id="boxcheck">
    <input type="checkbox" name="correct['+val+questions+'][]"> Correct
  </span>
  <span id="radiocheck" style="display:none">
    <input type="radio" name="correct['+val+questions+'][]"> Correct
  </span>
</div>
<select class="form-control" id="Typeselect" name="question_type[]" Required>
  <option value="txt">Text</option>
  <option value="ms">Color text</option>
  <option value="mm">Rainbow</option>
</select>

Answer 1

Working Demo

正如上面评论中提到的，这意味着将变量名称从value更改为selectedValue。

尝试以下解决方案:

$('#Typeselect').change(function() {
  var selectedValue = this.value;

  if (selectedValue === 'ms') {
    $('#radiocheck').show();
    $('#boxcheck').hide();
  } else {
    $('#radiocheck').hide();
    $('#boxcheck').show();
  }
});

<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>
<div class="col-md-4 operations">
  <span style="display:none" id="boxcheck">
    <input type="checkbox" name="correct['+val+questions+'][]"> Correct
  </span>
  <span id="radiocheck" style="display:none">
    <input type="radio" name="correct['+val+questions+'][]"> Correct
  </span>
</div>
<select class="form-control" id="Typeselect" name="question_type[]" Required>
  <option value="txt">Text</option>
  <option value="ms">Color text</option>
  <option value="mm">Rainbow</option>
</select>