node.js - nodejs 正则匹配，cpu达到100%的问题

Answer 1

Visually guess that the place where you are stuck is <p...> because every p needs to be matched and searched

Modify the expression to

<p\sclass="bbs-content[^"']*clearfix">(.*?)<p\sid="alt_action"[^>]*class="clearfix">

They generally don’t change the structure of p randomly, so the above expression can be matched

The speed can be more than 1 times faster

You can see that the $0 $1 below has been matched

Answer 2

The g descriptor of the regular expression is removed.