[removed] Passing a function with matches to replace( regex, func(arg) ) doesn't work

Question

According to this site the following replace method should work, though I am sceptical. http://www.bennadel.com/blog/55-Using-Methods-in-Javascript-Replace-Method.htm

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Answer 1

I think you're looking for new RegExp(pattern, modifiers).

http://www.w3schools.com/jsref/jsref_obj_regexp.asp

Answer 2

$1 must be inside the string:

"string".replace(/st(ring)/, "gold $1") 
// output -> "gold ring"

with a function:

"string".replace(/st(ring)/, function (match, capture) { 
    return "gold " + capture + "|" + match;
}); 
// output -> "gold ring|string"