使用Jquery从多个选择选项中获取自定义属性值

<script src="https://code.jquery.com/jquery-3.6.0.min.js"></script>

<select id="mySelect">
  <option value="1" data-custom="custom1">Option 1</option>
  <option value="2" data-custom="custom2">Option 2</option>
  <option value="3" data-custom="custom3">Option 3</option>
</select>

var selectedOption = $('#mySelect option:selected');
var customValue = selectedOption.data('custom');