Jquery在common parent中选择div

Consider code:

<div class="wrapper">    
    <div class="target">        
        <div class="sub1">
            <span class="value">
                10
            </span>
        </div>            
        <div class="sub2">
            <button type="button">Trigger</button>
        </div>            
    </div>

    <div class="target">                
        <div class="sub1">
            <span class="value">
                20
            </span>
        </div>            
        <div class="sub2">
            <button type="button">Trigger</button>
        </div>            
    </div>    
</div>
<div class="wrapper">