问jQuery:检测单选按钮的更改(哪些已选中，哪些未选定)，即使窗体字段是隐藏的

EN

<div class="radio-container">
  <input type="radio" name="choice" id="radio1" class="hidden-field">
  <label for="radio1">Label 1</label>
  <br>
  <input type="radio" name="choice" id="radio2" class="hidden-field">
  <label for="radio2">Label 2</label>
  <br>
  <input type="radio" name="choice" id="radio3" class="hidden-field">
  <label for="radio3">Label 3</label>
</div>

var field = $('.radio-container').find('.hidden-field');

$(field).on('focus', function() {
  console.log("Previous: " + $('.hidden-field:checked').next('label').text());
});

$(field).change(function() {
  console.log("Selected: " + $('.hidden-field:checked').next('label').text());
});

.hidden-field {
  display: none;
}