Javascript Regex: How to bold specific words with regex?

Question

Given a needle and a haystack... I want to put bold tags around the needle. So what regex expression would I use with replace()? I want SPACE to be the delimeter and I want

Answer 1

For those who don't want SPACE as the delimiter, simply don't use \s.

function updateHaystack(input, needle) 
{
 return input.replace(new RegExp('(^|)(' + needle + ')(|$)','ig'), '$1$2$3');
}

Worked for me.