如何在多个select2上设置选定值？

<select id="select1" class="select2">
  <option value="1">选项1</option>
  <option value="2">选项2</option>
  <option value="3">选项3</option>
</select>

<select id="select2" class="select2">
  <option value="1">选项1</option>
  <option value="2">选项2</option>
  <option value="3">选项3</option>
</select>

$(document).ready(function() {
  $('.select2').select2();
});

$(document).ready(function() {
  $('.select2').select2();
  
  // 设置选定值
  $('#select1').val('2').trigger('change');
  $('#select2').val(['1', '3']).trigger('change');
});