JavaScript - string regex backreferences

Question

You can backreference like this in JavaScript:

var str = \"123 $test 123\";
str = str.replace(/(\\$)([a-z]+)/gi, \"$2\");

This would (quite

Answer 1

Like this:

str.replace(regex, function(match, $1, $2, offset, original) { return someFunc($2); })