Question

First off, I’m a javascript noob and know nearly nothing of regex. I’m trying to hack together something that would essentially change this:

<span class="fspoiler">spoils</span>

To this:

<spoiler>spoils</spoiler>

From some research, it would seem that using Regex and the replace() function are the way to go, but I don’t where to start.

Answer 1

var str = '<span class="fspoiler">spoils</span>';
str.replace(/<span class="f(.+)">(.+)<\/span>/, '<$1>$2</$1>');