Question

just need a quick help for solving this problem.

I want to strip all html tags out of a string except the tags from a whitelist(variable).

My code so far:

whitelist = 'p|br|ul|li|strike|em|strong|a', 
reqExp = new RegExp('<\/?[^>|' + whitelist + ']+\/?>');

The problem is now it works more or less fine but also not removing for example b because it matches the b from the br out of the whitelist.

I tried different approaches but dont find the right solution.
How can i tell the regex to do something like /.WITHOUT(smth)/ (therefore: match all expect everything following).

Answer 1

Use this regex:-

<(?!/?(p|br|ul|li|strike|em|strong|a)(>|\s))[^<]+?>

LIVE DEMO

For more information, refer to my earlier answer, which fullfill your requirement.