正则表达式 - 删除链接包含特定域的“a”标记

Question

Say I have some text like so:

Lorem Ipsum <a href="http://www.youtube.com/watch?v=E6USO8krrmU">http://www.youtube.com/watch?v=E6USO8krrmU</a> blah blah blah <a href="http://www.google.com" target="_blank">Google</a> it's hot outside  <a href="http://www.youtube.com/watch?v=E6USO8krrmU" class="class1 class2">http://www.youtube.com/watch?v=E6USO8krrmU</a>

..and I want to remove the link from around it if the href attribute contains youtube - for the sake of this example.

The output should be:

Lorem Ipsum http://www.youtube.com/watch?v=E6USO8krrmU blah blah blah <a href="http://www.google.com" target="_blank">Google</a> it's hot outside  http://www.youtube.com/watch?v=E6USO8krrmU

How can I achieve this?

While I have your attention, if anyone has any links to a good place to start learning regex I'd love to hear it.

Answer 1

$('a').filter(function() {
    return $(this).attr('href').lastIndexOf('youtube') >= 0;
}).contents().unwrap();