如何删除多个 <script> 标签中的选择性 <script> 标签？

Question

我在一个网页上有多个 <script> 标签。我想从其中删除一些 <script> 标签。我如何使用 Nokogiri？

例如，我有五个 <script> 标签：

<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>

我只想删除 "script file 2" 和 "script file B"。

Answer 1

你可以找到xpath and 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>

如何删除多个 <script> 标签中的选择性 <script> 标签？

How to remove selective <script> tag among multiple <script> tags?

ruby

nokogiri