添加监听器记住上次点击

Answer 1

因为您想使用当前单击的单选按钮，所以：

a) 删除顶部添加的循环

b) 相应地更改代码。

你可以像下面这样实现它：

$('.transfer-item').click(function(e) {
  var $main = $(this).closest('li');
  var $iframe = $main.find('iframe');
  if (!$iframe.attr('src')) {
    $iframe.attr('src', $iframe.data('src'));
    $(this).on('message', function(e) {
      if (e.data.message === 'pickerResult') {
        var point = e.data.point;
        $main.find('.iframe-wrap').hide();
        $main.find('.zip-code-select-text').text(point.address);
        $main.find('.zip-code-select input:hidden').val(point.zip);
        $main.find('.zip-code-select').show();
      }
    });
  }
});

<script src="https://cdnjs.cloudflare.com/ajax/libs/jquery/3.3.1/jquery.min.js"></script>
<ul>
  <li class="a">
    <input class="transfer-item" type="radio" name="transfer" value="1">
    <label>
      Transfer 1
      <div class="transfer-zip-code">
        <div class="iframe-wrap">
          <iframe data-src="https://b2c.cpost.cz/locations/?type=POST_OFFICE" allow="geolocation"></iframe>
        </div>
        <div class="zip-code-select">
          <input type="hidden" name="transfer_zip_code_1" value="">
          <span class="zip-code-select-text"></span>
          <a class="zip-code-select-change" href="#">Change</a>
        </div>
      </div>
    </label>
  </li>
  <li class="b">
    <input class="transfer-item" type="radio" name="transfer" value="2">
    <label>
      Transfer 2
      <div class="transfer-zip-code">
        <div class="iframe-wrap">
          <iframe data-src="https://b2c.cpost.cz/locations/?type=BALIKOVNY" allow="geolocation"></iframe>
        </div>
        <div class="zip-code-select">
          <input type="hidden" name="transfer_zip_code_2" value="">
          <span class="zip-code-select-text"></span>
          <a class="zip-code-select-change" href="#">Change</a>
        </div>
      </div>
    </label>
  </li>
</ul>