Javascript search and replace

Question

I would like do do the following in Javascript (pseudo code):

myString.replace(/mypattern/g, f(currentMatch));

that is, replace string isn't fixed, but function of current match.

Answer 1

MDC claims that you can do just that:

function styleHyphenFormat(propertyName)
{
 function upperToHyphenLower(match)
 {
 return '-' + match.toLowerCase();
 }
 return propertyName.replace(/[A-Z]/, upperToHyphenLower);
}

Or more generically:

myString.replace(/mypattern/g, function(match){
 return "Some function of match";
});

• Slartibartfast: MDC was my first pick, but it was down when I tried to see it. Other sites I've found had only simple examples of replace.
• bobince: This was introduced in JavaScript 1.3. The old JS docs from Netscape 4 can be useful to check JavaScript constructs because almost all of it constitutes old-school JS with "DOM Level 0" that will be supported everywhere. see eg. Sun's mirror at docs.sun.com/source/816-6408-10/contents.htm

Answer 2

Just omit the argument, i.e. use this:

myString.replace(/mypattern/g, f);

Here's an example: http://ejohn.org/blog/search-and-dont-replace/