the code is as follows:
<div class="box">
    <ul>
        <li>
            <div class="list">
                <div class="item">
                    <span></span>
                </div>
                <em></em>
            </div>
        </li>
        <!-- li -->
        <li>
            <div class="list">
                <div class="item">
                    <span>N</span>
                </div>
                <em></em>
            </div>
        </li>
    </ul>
</div>  in li and click   to get the content of     span in the current li. Please tell me how to get it, thank you very much! ~ 
						