how to select following 2nd sibling in tritium?

Question

I have a parent div with four children div. How do I select the second sibling when there is no class given?

<div class="parent">
    <div>1</div>
    <div>2</div>
    <div>3</div>
    <div>4</div>
</div>

Answer 1

$('//div[@class="parent"]/div[2]')

这样可以直接选择第二个孩子