如何在多个<script>标签中删除选择性<script>标签？

Question

我在网页上有多个＆lt; script＆gt; 标记。我想从中删除一些＆lt; script＆gt; 标记。我如何使用Nokogiri？

＆＃xA;＆＃xA;

例如，我有五个＆lt; script＆gt; 标签：

＆＃xA;＆ #xA;

 ＆lt; script type =“text / javascript”src =“script file 1”＆gt;＆lt; / script＆gt;＆＃xA;＆lt; script type =“text / javascript”src =“脚本文件2“＆gt;＆lt; / script＆gt;＆＃xA;＆lt; script type =”text / javascript“src =”脚本文件A“＆gt;＆lt; / script＆gt;＆＃xA;＆lt; script type =”text / javascript“src =”脚本文件B“＆gt;＆lt; / script＆gt;＆＃xA;＆lt; script type =”text / javascript“src =”脚本文件C“＆gt;＆lt; / script＆gt;＆＃xA; < / code> 

＆＃xA;＆＃xA;

我只想删除“脚本文件2”和“脚本文件B”。< / p>＆＃XA;

Answer 1

您可以找到xpath和remove对应的节点：

doc.xpath("//script[@src='script file 2' or @src='script file B']").remove

Answer 2

使用CSS我可能会使用类似的东西：

require 'nokogiri'

doc = Nokogiri::HTML::DocumentFragment.parse(<<EOT)
<script type="text/javascript" src="script file 1"></script>
<script type="text/javascript" src="script file 2"></script>
<script type="text/javascript" src="script file A"></script>
<script type="text/javascript" src="script file B"></script>
<script type="text/javascript" src="script file C"></script>
EOT

doc.search('script').select { |script| script['src'][/file [2B]$/] }.map(&:remove)
puts doc.to_html

# >> <script type="text/javascript" src="script%20file%201"></script>
# >> 
# >> <script type="text/javascript" src="script%20file%20A"></script>
# >> 
# >> <script type="text/javascript" src="script%20file%20C"></script>