我想从 html 数据中获取特定标签之间的数据。
<ul>    
    <li>
        More consistent tension control and approximation with each pass than with traditional sutures.
        <ul>                    
            <li>Unique anchor designs provide multiple points of fixation along the device, allowing tension on the device to be maintained during closure.<sup><a class="reference_link" href="#22">[22]</a></sup></li>
            <li>Compared to traditional sutures, STRATAFIX™ Devices enable surgeons to easily manage tension and control approximation with each pass.<sup><a class="reference_link" href="#3">[3]</a></sup></li>
        </ul>
    </li>
<ul>
在这里,我想从<a class="reference_link" href="#3">[3]</a>我想存储该值(例如 3)中获取数据。
提前致谢。