有没有办法选择兄弟节点？(Is there a way to select sibling nodes?)

 出于某些性能原因，我试图找到一种方法来选择所选节点的兄弟节点。 例如， 
 
 <div id="outer">
      <div id="inner1"> </div>
      <div id="inner2"> </div>
      <div id="inner3"> </div>
      <div id="inner4"> </div>
 </div>
 
 如果我选择了inner1节点，有没有办法让我访问它的兄弟姐妹，inner2-4节点？ 

For some performance reasons, I am trying to find a way to select only sibling nodes of the selected node. For example,
 
 <div id="outer">
      <div id="inner1"> </div>
      <div id="inner2"> </div>
      <div id="inner3"> </div>
      <div id="inner4"> </div>
 </div>
 
If I selected inner1 node, is there a way for me to access its siblings, inner2-4 nodes?

原文：https://stackoverflow.com/questions/842336