Hpricot 获取HTML文档中某个元素第一次出现的位置

require 'rubygems'
require 'hpricot'
require 'open-uri'

doc = Hpricot(open('http://www.rubyinside.com/test.html'))
puts doc.search("h1").first.inner_html


list = doc.at("ul")
list.search("li").each do |item|
  puts item.inner_html
end

编程技巧