LoofahHTML代码清理库

Loofah 是一个 HTML 代码清理库，它可以修复被中断的HTML标签。

示例代码：

  doc = Loofah.fragment(unsafe_html)  # returns a Nokogiri document ...
  doc.scrub!(:prune)                  # ... with one extra method
  doc.to_s                            # => "ohai! <div>div is safe</div> "
  doc.text                            # => "ohai! div is safe "